import {models, DataLoader, FormField, MenuItem, NotificationType, Tooltip, HelpIcon} from 'argo-ui';
import {ActionButton} from 'argo-ui/v2';
import * as classNames from 'classnames';
import * as React from 'react';
import * as ReactForm from 'react-form';
import {FormApi, Text} from 'react-form';
import * as moment from 'moment';
import {BehaviorSubject, combineLatest, concat, from, fromEvent, Observable, Observer, Subscription} from 'rxjs';
import {debounceTime, map} from 'rxjs/operators';
import {AppContext, Context, ContextApis} from '../../shared/context';
import {isValidURL} from '../../shared/utils';
import {ResourceTreeNode} from './application-resource-tree/application-resource-tree';

import {CheckboxField, COLORS, ErrorNotification, Revision} from '../../shared/components';
import * as appModels from '../../shared/models';
import {services} from '../../shared/services';
import {ApplicationSource} from '../../shared/models';

require('./utils.scss');

export interface NodeId {
    kind: string;
    namespace: string;
    name: string;
    group: string;
    createdAt?: models.Time;
}

type ActionMenuItem = MenuItem & {disabled?: boolean; tooltip?: string};

export function nodeKey(node: NodeId) {
    return [node.group, node.kind, node.namespace, node.name].join('/');
}

// Convert ResourceStatus to ResourceNode for orphaned resources
export function resourceStatusToResourceNode(res: appModels.ResourceStatus): appModels.ResourceNode {
    return {
        kind: res.kind,
        name: res.name,
        namespace: res.namespace,
        group: res.group,
        version: res.version,
        uid: `${res.group}/${res.kind}/${res.namespace}/${res.name}`,
        resourceVersion: '',
        createdAt: res.createdAt,
        parentRefs: [],
        info: []
    };
}

export function createdOrNodeKey(node: NodeId) {
    return node?.createdAt || nodeKey(node);
}

export function isSameNode(first: NodeId, second: NodeId) {
    return nodeKey(first) === nodeKey(second);
}

export function helpTip(text: string) {
    return (
        <Tooltip content={text}>
            <span style={{fontSize: 'smaller'}}>
                {' '}
                <i className='fas fa-info-circle' />
            </span>
        </Tooltip>
    );
}

//CLassic Solid circle-notch icon
//<!--!Font Awesome Free 6.7.2 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free Copyright 2025 Fonticons, Inc.-->
//this will replace all <i> fa-spin </i> icons as they are currently misbehaving with no fix available.

export const SpinningIcon = ({color, qeId}: {color: string; qeId: string}) => {
    return (
        <svg className='icon spin' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512' style={{color}} qe-id={qeId}>
            <path
                fill={color}
                d='M222.7 32.1c5 16.9-4.6 34.8-21.5 39.8C121.8 95.6 64 169.1 64 256c0 106 86 192 192 192s192-86 192-192c0-86.9-57.8-160.4-137.1-184.1c-16.9-5-26.6-22.9-21.5-39.8s22.9-26.6 39.8-21.5C434.9 42.1 512 140 512 256c0 141.4-114.6 256-256 256S0 397.4 0 256C0 140 77.1 42.1 182.9 10.6c16.9-5 34.8 4.6 39.8 21.5z'
            />
        </svg>
    );
};

export async function deleteApplication(appName: string, appNamespace: string, apis: ContextApis, application?: appModels.Application): Promise<boolean> {
    let confirmed = false;

    // Use common child application detection logic if application object is provided
    const isChildApp = application ? isChildApplication(application) : false;
    const dialogTitle = isChildApp ? 'Delete child application' : 'Delete application';
    const appType = isChildApp ? 'child Application' : 'Application';
    const confirmLabel = isChildApp ? 'child application' : 'application';

    // Check if this is being called from resource tree context
    const isFromResourceTree = application !== undefined;

    const propagationPolicies: {name: string; message: string}[] = [
        {
            name: 'Foreground',
            message: `Cascade delete the application's resources using foreground propagation policy`
        },
        {
            name: 'Background',
            message: `Cascade delete the application's resources using background propagation policy`
        },
        {
            name: 'Non-cascading',
            message: `Only delete the application, but do not cascade delete its resources`
        }
    ];
    await apis.popup.prompt(
        dialogTitle,
        api => (
            <div>
                <p>
                    Are you sure you want to delete the <strong>{appType}</strong> <kbd>{appName}</kbd>?
                </p>
                {isFromResourceTree && (
                    <p>
                        <strong>
                            <i className='fa fa-warning delete-dialog-icon warning' /> Note:
                        </strong>{' '}
                        You are about to delete an Application from the resource tree. This uses the same deletion behavior as the Applications list page.
                    </p>
                )}
                <p>
                    Deleting the application in <kbd>foreground</kbd> or <kbd>background</kbd> mode will delete all the application's managed resources, which can be{' '}
                    <strong>dangerous</strong>. Be sure you understand the effects of deleting this resource before continuing. Consider asking someone to review the change first.
                </p>
                <div className='argo-form-row'>
                    <FormField
                        label={`Please type '${appName}' to confirm the deletion of the ${confirmLabel}`}
                        formApi={api}
                        field='applicationName'
                        qeId='name-field-delete-confirmation'
                        component={Text}
                    />
                </div>
                <p>Select propagation policy for application deletion</p>
                <div className='propagation-policy-list'>
                    {propagationPolicies.map(policy => {
                        return (
                            <FormField
                                formApi={api}
                                key={policy.name}
                                field='propagationPolicy'
                                component={PropagationPolicyOption}
                                componentProps={{
                                    policy: policy.name,
                                    message: policy.message
                                }}
                            />
                        );
                    })}
                </div>
            </div>
        ),
        {
            validate: vals => ({
                applicationName: vals.applicationName !== appName && 'Enter the application name to confirm the deletion'
            }),
            submit: async (vals, _, close) => {
                try {
                    await services.applications.delete(appName, appNamespace, vals.propagationPolicy);
                    confirmed = true;
                    close();
                } catch (e) {
                    apis.notifications.show({
                        content: <ErrorNotification title='Unable to delete application' e={e} />,
                        type: NotificationType.Error
                    });
                }
            }
        },
        {name: 'argo-icon-warning', color: 'failed'},
        'red',
        {propagationPolicy: 'foreground'}
    );
    return confirmed;
}

export async function confirmSyncingAppOfApps(apps: appModels.Application[], apis: ContextApis, form: FormApi): Promise<boolean> {
    let confirmed = false;
    const appNames: string[] = apps.map(app => app.metadata.name);
    const appNameList = appNames.join(', ');
    await apis.popup.prompt(
        'Warning: Synchronize App of Multiple Apps using replace?',
        api => (
            <div>
                <p>
                    Are you sure you want to sync the application '{appNameList}' which contain(s) multiple apps with 'replace' option? This action will delete and recreate all
                    apps linked to '{appNameList}'.
                </p>
                <div className='argo-form-row'>
                    <FormField
                        label={`Please type '${appNameList}' to confirm the Syncing of the resource`}
                        formApi={api}
                        field='applicationName'
                        qeId='name-field-delete-confirmation'
                        component={Text}
                    />
                </div>
            </div>
        ),
        {
            validate: vals => ({
                applicationName: vals.applicationName !== appNameList && 'Enter the application name(s) to confirm syncing'
            }),
            submit: async (_vals, _, close) => {
                try {
                    await form.submitForm(null);
                    confirmed = true;
                    close();
                } catch (e) {
                    apis.notifications.show({
                        content: <ErrorNotification title='Unable to sync application' e={e} />,
                        type: NotificationType.Error
                    });
                }
            }
        },
        {name: 'argo-icon-warning', color: 'warning'},
        'yellow'
    );
    return confirmed;
}

const PropagationPolicyOption = ReactForm.FormField((props: {fieldApi: ReactForm.FieldApi; policy: string; message: string}) => {
    const {
        fieldApi: {setValue}
    } = props;
    return (
        <div className='propagation-policy-option'>
            <input
                className='radio-button'
                key={props.policy}
                type='radio'
                name='propagation-policy'
                value={props.policy}
                id={props.policy}
                defaultChecked={props.policy === 'Foreground'}
                onChange={() => setValue(props.policy.toLowerCase())}
            />
            <label htmlFor={props.policy}>
                {props.policy} {helpTip(props.message)}
            </label>
        </div>
    );
});

export const OperationPhaseIcon = ({app, isButton}: {app: appModels.Application; isButton?: boolean}) => {
    const operationState = getAppOperationState(app);
    if (operationState === undefined) {
        return null;
    }
    let className = '';
    let color = '';
    switch (operationState.phase) {
        case appModels.OperationPhases.Succeeded:
            className = `fa fa-check-circle${isButton ? ' status-button' : ''}`;
            color = COLORS.operation.success;
            break;
        case appModels.OperationPhases.Error:
            className = `fa fa-times-circle${isButton ? ' status-button' : ''}`;
            color = COLORS.operation.error;
            break;
        case appModels.OperationPhases.Failed:
            className = `fa fa-times-circle${isButton ? ' status-button' : ''}`;
            color = COLORS.operation.failed;
            break;
        default:
            className = 'fa fa-circle-notch fa-spin';
            color = COLORS.operation.running;
            break;
    }
    return className.includes('fa-spin') ? (
        <SpinningIcon color={color} qeId='utils-operations-status-title' />
    ) : (
        <i title={getOperationStateTitle(app)} qe-id='utils-operations-status-title' className={className} style={{color}} />
    );
};

export const HydrateOperationPhaseIcon = ({operationState, isButton}: {operationState?: appModels.HydrateOperation; isButton?: boolean}) => {
    if (operationState === undefined) {
        return null;
    }
    let className = '';
    let color = '';
    switch (operationState.phase) {
        case appModels.HydrateOperationPhases.Hydrated:
            className = `fa fa-check-circle${isButton ? ' status-button' : ''}`;
            color = COLORS.operation.success;
            break;
        case appModels.HydrateOperationPhases.Failed:
            className = `fa fa-times-circle${isButton ? ' status-button' : ''}`;
            color = COLORS.operation.failed;
            break;
        default:
            className = 'fa fa-circle-notch fa-spin';
            color = COLORS.operation.running;
            break;
    }
    return className.includes('fa-spin') ? (
        <SpinningIcon color={color} qeId='utils-operations-status-title' />
    ) : (
        <i title={operationState.phase} qe-id='utils-operations-status-title' className={className} style={{color}} />
    );
};

export const ComparisonStatusIcon = ({
    status,
    resource,
    label,
    noSpin,
    isButton
}: {
    status: appModels.SyncStatusCode;
    resource?: {requiresPruning?: boolean};
    label?: boolean;
    noSpin?: boolean;
    isButton?: boolean;
}) => {
    let className = 'fas fa-question-circle';
    let color = COLORS.sync.unknown;
    let title: string = 'Unknown';
    switch (status) {
        case appModels.SyncStatuses.Synced:
            className = `fa fa-check-circle${isButton ? ' status-button' : ''}`;
            color = COLORS.sync.synced;
            title = 'Synced';
            break;
        case appModels.SyncStatuses.OutOfSync:
            // eslint-disable-next-line no-case-declarations
            const requiresPruning = resource && resource.requiresPruning;
            className = requiresPruning ? `fa fa-trash${isButton ? ' status-button' : ''}` : `fa fa-arrow-alt-circle-up${isButton ? ' status-button' : ''}`;
            title = 'OutOfSync';
            if (requiresPruning) {
                title = `${title} (This resource is not present in the application's source. It will be deleted from Kubernetes if the prune option is enabled during sync.)`;
            }
            color = COLORS.sync.out_of_sync;
            break;
        case appModels.SyncStatuses.Unknown:
            className = `fa fa-circle-notch ${noSpin ? '' : 'fa-spin'}${isButton ? ' status-button' : ''}`;
            break;
    }
    return className.includes('fa-spin') ? (
        <SpinningIcon color={color} qeId='utils-sync-status-title' />
    ) : (
        <React.Fragment>
            <i qe-id='utils-sync-status-title' title={title} className={className} style={{color}} /> {label && title}
        </React.Fragment>
    );
};

export function showDeploy(resource: string, revision: string, apis: ContextApis) {
    apis.navigation.goto('.', {deploy: resource, revision}, {replace: true});
}

export function findChildPod(node: appModels.ResourceNode, tree: appModels.ApplicationTree): appModels.ResourceNode {
    const key = nodeKey(node);

    const allNodes = tree.nodes.concat(tree.orphanedNodes || []);
    const nodeByKey = new Map<string, appModels.ResourceNode>();
    allNodes.forEach(item => nodeByKey.set(nodeKey(item), item));

    const pods = tree.nodes.concat(tree.orphanedNodes || []).filter(item => item.kind === 'Pod');
    return pods.find(pod => {
        const items: Array<appModels.ResourceNode> = [pod];
        while (items.length > 0) {
            const next = items.pop();
            const parentKeys = (next.parentRefs || []).map(nodeKey);
            if (parentKeys.includes(key)) {
                return true;
            }
            parentKeys.forEach(item => {
                const parent = nodeByKey.get(item);
                if (parent) {
                    items.push(parent);
                }
            });
        }

        return false;
    });
}

export function findChildResources(node: appModels.ResourceNode, tree: appModels.ApplicationTree): appModels.ResourceNode[] {
    const key = nodeKey(node);

    const children: appModels.ResourceNode[] = [];
    tree.nodes.forEach(item => {
        (item.parentRefs || []).forEach(parent => {
            if (key === nodeKey(parent)) {
                children.push(item);
            }
        });
    });

    return children;
}

const deletePodAction = async (ctx: ContextApis, pod: appModels.ResourceNode, app: appModels.AbstractApplication) => {
    ctx.popup.prompt(
        'Delete pod',
        () => (
            <div>
                <p>
                    Are you sure you want to delete <strong>Pod</strong> <kbd>{pod.name}</kbd>?
                    <span style={{display: 'block', marginBottom: '10px'}} />
                    Deleting resources can be <strong>dangerous</strong>. Be sure you understand the effects of deleting this resource before continuing. Consider asking someone to
                    review the change first.
                </p>
                <div className='argo-form-row' style={{paddingLeft: '30px'}}>
                    <CheckboxField id='force-delete-checkbox' field='force' />
                    <label htmlFor='force-delete-checkbox'>Force delete</label>
                    <HelpIcon title='If checked, Argo will ignore any configured grace period and delete the resource immediately' />
                </div>
            </div>
        ),
        {
            submit: async (vals, _, close) => {
                try {
                    await services.applications.deleteResource(app.metadata.name, app.metadata.namespace, pod, !!vals.force, false);
                    close();
                } catch (e) {
                    ctx.notifications.show({
                        content: <ErrorNotification title='Unable to delete resource' e={e} />,
                        type: NotificationType.Error
                    });
                }
            }
        }
    );
};

export const deleteSourceAction = (app: appModels.Application, source: appModels.ApplicationSource, appContext: AppContext) => {
    appContext.apis.popup.prompt(
        'Delete source',
        () => (
            <div>
                <p>
                    Are you sure you want to delete the source with URL: <kbd>{source.repoURL}</kbd>
                    {source.path ? (
                        <>
                            {' '}
                            and path: <kbd>{source.path}</kbd>?
                        </>
                    ) : (
                        <>?</>
                    )}
                </p>
            </div>
        ),
        {
            submit: async (vals, _, close) => {
                try {
                    const i = app.spec.sources.indexOf(source);
                    app.spec.sources.splice(i, 1);
                    await services.applications.update(app);
                    close();
                } catch (e) {
                    appContext.apis.notifications.show({
                        content: <ErrorNotification title='Unable to delete source' e={e} />,
                        type: NotificationType.Error
                    });
                }
            }
        },
        {name: 'argo-icon-warning', color: 'warning'},
        'yellow'
    );
};

// Detect if a resource is an Application
const isApplicationResource = (resource: ResourceTreeNode): boolean => {
    return resource.kind === 'Application' && resource.group === 'argoproj.io';
};

// Detect if an application is a child application
const isChildApplication = (application: appModels.Application): boolean => {
    const partOfLabel = application.metadata.labels?.['app.kubernetes.io/part-of'];
    return partOfLabel && partOfLabel.trim() !== '';
};

export const deletePopup = async (
    ctx: ContextApis,
    resource: ResourceTreeNode,
    application: appModels.AbstractApplication,
    isManaged: boolean,
    childResources: appModels.ResourceNode[],
    appChanged?: BehaviorSubject<appModels.AbstractApplication>
) => {
    // Detect if this is an Application resource
    const isApplication = isApplicationResource(resource);

    const hasApplicationContext = isApp(application);
    // Check if we're in a parent-child context (used for both Application and non-Application resources)
    const isInParentContext = hasApplicationContext ? isChildApplication(application) : false;

    // For Application resources, use the deleteApplication function with resource tree context
    if (isApplication) {
        return deleteApplication(resource.name, resource.namespace || '', ctx, hasApplicationContext ? application : undefined);
    }

    const deleteOptions = {
        option: 'foreground'
    };
    function handleStateChange(option: string) {
        deleteOptions.option = option;
    }

    if (resource.kind === 'Pod' && !isManaged) {
        return deletePodAction(ctx, resource, application);
    }

    // Determine dialog title and add custom messaging
    const dialogTitle = 'Delete resource';
    let customMessage: React.ReactNode = null;

    if (isInParentContext) {
        customMessage = (
            <div>
                <p>
                    <strong>
                        <i className='fa fa-exclamation-triangle delete-dialog-icon info' /> Note:
                    </strong>{' '}
                    You are about to delete a resource from a parent application's resource tree.
                </p>
            </div>
        );
    }

    return ctx.popup.prompt(
        dialogTitle,
        api => (
            <div>
                <p>
                    Are you sure you want to delete <strong>{resource.kind}</strong> <kbd>{resource.name}</kbd>?
                </p>
                {customMessage}
                <p>
                    Deleting resources can be <strong>dangerous</strong>. Be sure you understand the effects of deleting this resource before continuing. Consider asking someone to
                    review the change first.
                </p>

                {(childResources || []).length > 0 ? (
                    <React.Fragment>
                        <p>Dependent resources:</p>
                        <ul>
                            {childResources.slice(0, 4).map((child, i) => (
                                <li key={i}>
                                    <kbd>{[child.kind, child.name].join('/')}</kbd>
                                </li>
                            ))}
                            {childResources.length === 5 ? (
                                <li key='4'>
                                    <kbd>{[childResources[4].kind, childResources[4].name].join('/')}</kbd>
                                </li>
                            ) : (
                                ''
                            )}
                            {childResources.length > 5 ? <li key='N'>and {childResources.slice(4).length} more.</li> : ''}
                        </ul>
                    </React.Fragment>
                ) : (
                    ''
                )}

                {isManaged ? (
                    <div className='argo-form-row'>
                        <FormField label={`Please type '${resource.name}' to confirm the deletion of the resource`} formApi={api} field='resourceName' component={Text} />
                    </div>
                ) : (
                    ''
                )}
                <div className='argo-form-row'>
                    <input
                        type='radio'
                        name='deleteOptions'
                        value='foreground'
                        onChange={() => handleStateChange('foreground')}
                        defaultChecked={true}
                        style={{marginRight: '5px'}}
                        id='foreground-delete-radio'
                    />
                    <label htmlFor='foreground-delete-radio' style={{paddingRight: '30px'}}>
                        Foreground Delete {helpTip('Deletes the resource and dependent resources using the cascading policy in the foreground')}
                    </label>
                    <input type='radio' name='deleteOptions' value='force' onChange={() => handleStateChange('force')} style={{marginRight: '5px'}} id='force-delete-radio' />
                    <label htmlFor='force-delete-radio' style={{paddingRight: '30px'}}>
                        Background Delete {helpTip('Performs a forceful "background cascading deletion" of the resource and its dependent resources')}
                    </label>
                    <input type='radio' name='deleteOptions' value='orphan' onChange={() => handleStateChange('orphan')} style={{marginRight: '5px'}} id='cascade-delete-radio' />
                    <label htmlFor='cascade-delete-radio'>Non-cascading (Orphan) Delete {helpTip('Deletes the resource and orphans the dependent resources')}</label>
                </div>
            </div>
        ),
        {
            validate: vals =>
                isManaged && {
                    resourceName: vals.resourceName !== resource.name && 'Enter the resource name to confirm the deletion'
                },
            submit: async (vals, _, close) => {
                const force = deleteOptions.option === 'force';
                const orphan = deleteOptions.option === 'orphan';
                try {
                    await services.applications.deleteResource(application.metadata.name, application.metadata.namespace, resource, !!force, !!orphan);
                    if (appChanged) {
                        const objectListKind = isApp(application) ? 'application' : 'applicationset';
                        appChanged.next(await services.applications.get(application.metadata.name, application.metadata.namespace, objectListKind));
                    }
                    close();
                } catch (e) {
                    ctx.notifications.show({
                        content: <ErrorNotification title='Unable to delete resource' e={e} />,
                        type: NotificationType.Error
                    });
                }
            }
        },
        {name: 'argo-icon-warning', color: 'warning'},
        'yellow'
    );
};

export async function getResourceActionsMenuItems(resource: ResourceTreeNode, metadata: models.ObjectMeta, apis: ContextApis): Promise<ActionMenuItem[]> {
    // Don't call API for missing resources
    if (!resource.uid) {
        return [];
    }

    return services.applications
        .getResourceActions(metadata.name, metadata.namespace, resource)
        .then(actions => {
            return actions.map(action => ({
                title: action.displayName ?? action.name,
                disabled: !!action.disabled,
                iconClassName: action.iconClass,
                action: async () => {
                    const confirmed = false;
                    const title = action.params ? `Enter input parameters for action: ${action.name}` : `Perform ${action.name} action?`;
                    await apis.popup.prompt(
                        title,
                        api => (
                            <div>
                                {!action.params && (
                                    <div className='argo-form-row'>
                                        <div> Are you sure you want to perform {action.name} action?</div>
                                    </div>
                                )}
                                {action.params &&
                                    action.params.map((param, index) => (
                                        <div className='argo-form-row' key={index}>
                                            <FormField label={param.name} field={param.name} formApi={api} component={Text} />
                                        </div>
                                    ))}
                            </div>
                        ),
                        {
                            submit: async (vals, _, close) => {
                                try {
                                    const resourceActionParameters = action.params
                                        ? action.params.map(param => ({
                                              name: param.name,
                                              value: vals[param.name] || param.default,
                                              type: param.type,
                                              default: param.default
                                          }))
                                        : [];
                                    await services.applications.runResourceAction(metadata.name, metadata.namespace, resource, action.name, resourceActionParameters);
                                    close();
                                } catch (e) {
                                    apis.notifications.show({
                                        content: <ErrorNotification title='Unable to execute resource action' e={e} />,
                                        type: NotificationType.Error
                                    });
                                }
                            }
                        },
                        null,
                        null,
                        action.params
                            ? action.params.reduce((acc, res) => {
                                  acc[res.name] = res.default;
                                  return acc;
                              }, {} as any)
                            : {}
                    );
                    return confirmed;
                }
            }));
        })
        .catch(() => [] as ActionMenuItem[]);
}

function getActionItems(
    resource: ResourceTreeNode,
    application: appModels.AbstractApplication,
    tree: appModels.AbstractApplicationTree,
    apis: ContextApis,
    appChanged: BehaviorSubject<appModels.AbstractApplication>,
    isQuickStart: boolean
): Observable<ActionMenuItem[]> {
    function isTopLevelResource(res: ResourceTreeNode, app: appModels.AbstractApplication): boolean {
        const uniqRes = `/${res.namespace}/${res.group}/${res.kind}/${res.name}`;
        return (
            app.status?.resources?.some((resStatus: appModels.ResourceStatus) => `/${resStatus.namespace}/${resStatus.group}/${resStatus.kind}/${resStatus.name}` === uniqRes) ||
            false
        );
    }

    const isPod = resource.kind === 'Pod';
    const isManaged = isTopLevelResource(resource, application);
    const childResources = isApp(application) ? findChildResources(resource, tree as appModels.ApplicationTree) : [];

    const items: MenuItem[] = [
        ...((isManaged && [
            {
                title: 'Sync',
                iconClassName: 'fa fa-fw fa-sync',
                action: () => showDeploy(nodeKey(resource), null, apis)
            }
        ]) ||
            []),
        {
            title: 'Delete',
            iconClassName: 'fa fa-fw fa-times-circle',
            action: async () => {
                return deletePopup(apis, resource, application, isManaged, childResources, appChanged);
            }
        }
    ];

    if (!isQuickStart) {
        items.unshift({
            title: 'Details',
            iconClassName: 'fa fa-fw fa-info-circle',
            action: () => apis.navigation.goto('.', {node: nodeKey(resource)})
        });
    }

    const logsAction = isApp(application)
        ? services.accounts
              .canI('logs', 'get', application.spec.project + '/' + application.metadata.name)
              .then(async allowed => {
                  if (allowed && (isPod || findChildPod(resource, tree as appModels.ApplicationTree))) {
                      return [
                          {
                              title: 'Logs',
                              iconClassName: 'fa fa-fw fa-align-left',
                              action: () => apis.navigation.goto('.', {node: nodeKey(resource), tab: 'logs'}, {replace: true})
                          } as MenuItem
                      ];
                  }
                  return [] as MenuItem[];
              })
              .catch(() => [] as MenuItem[])
        : Promise.resolve([] as MenuItem[]);

    if (isQuickStart) {
        return combineLatest(
            from([items]), // this resolves immediately
            concat([[] as MenuItem[]], logsAction) // this resolves at first to [] and then whatever the API returns
        ).pipe(map(res => ([] as MenuItem[]).concat(...res)));
    }

    const execAction = isApp(application)
        ? services.authService
              .settings()
              .then(async settings => {
                  const execAllowed = settings.execEnabled && (await services.accounts.canI('exec', 'create', application.spec.project + '/' + application.metadata.name));
                  if (isPod && execAllowed) {
                      return [
                          {
                              title: 'Exec',
                              iconClassName: 'fa fa-fw fa-terminal',
                              action: async () => apis.navigation.goto('.', {node: nodeKey(resource), tab: 'exec'}, {replace: true})
                          } as MenuItem
                      ];
                  }
                  return [] as MenuItem[];
              })
              .catch(() => [] as MenuItem[])
        : Promise.resolve([] as MenuItem[]);

    const resourceActions = getResourceActionsMenuItems(resource, application.metadata, apis);

    const links = !resource.uid
        ? Promise.resolve([])
        : services.applications
              .getResourceLinks(application.metadata.name, application.metadata.namespace, resource)
              .then(data => {
                  return (data.items || []).map(
                      link =>
                          ({
                              title: link.title,
                              iconClassName: `fa fa-fw ${link.iconClass ? link.iconClass : 'fa-external-link'}`,
                              action: () => window.open(link.url, '_blank'),
                              tooltip: link.description
                          }) as MenuItem
                  );
              })
              .catch(() => [] as MenuItem[]);

    return combineLatest(
        from([items]), // this resolves immediately
        concat([[] as MenuItem[]], logsAction), // this resolves at first to [] and then whatever the API returns
        concat([[] as MenuItem[]], resourceActions), // this resolves at first to [] and then whatever the API returns
        concat([[] as MenuItem[]], execAction), // this resolves at first to [] and then whatever the API returns
        concat([[] as MenuItem[]], links) // this resolves at first to [] and then whatever the API returns
    ).pipe(map(res => ([] as MenuItem[]).concat(...res)));
}

export function renderResourceMenu(
    resource: ResourceTreeNode,
    application: appModels.AbstractApplication,
    tree: appModels.AbstractApplicationTree,
    apis: ContextApis,
    appChanged: BehaviorSubject<appModels.AbstractApplication>,
    getApplicationActionMenu: () => any
): React.ReactNode {
    let menuItems: Observable<ActionMenuItem[]>;

    if (isAppNode(resource) && resource.name === application.metadata.name) {
        menuItems = from([getApplicationActionMenu()]);
    } else {
        menuItems = getActionItems(resource, application, tree, apis, appChanged, false);
    }
    return (
        <DataLoader load={() => menuItems}>
            {items => (
                <ul>
                    {items.map((item, i) => (
                        <li
                            className={classNames('application-details__action-menu', {disabled: item.disabled})}
                            tabIndex={item.disabled ? undefined : 0}
                            key={i}
                            onClick={e => {
                                e.stopPropagation();
                                if (!item.disabled) {
                                    item.action();
                                    document.body.click();
                                }
                            }}
                            onKeyDown={e => {
                                if (e.keyCode === 13 || e.key === 'Enter') {
                                    e.stopPropagation();
                                    setTimeout(() => {
                                        item.action();
                                        document.body.click();
                                    });
                                }
                            }}>
                            {item.tooltip ? (
                                <Tooltip content={item.tooltip || ''}>
                                    <div>
                                        {item.iconClassName && <i className={item.iconClassName} />} {item.title}
                                    </div>
                                </Tooltip>
                            ) : (
                                <>
                                    {item.iconClassName && <i className={item.iconClassName} />} {item.title}
                                </>
                            )}
                        </li>
                    ))}
                </ul>
            )}
        </DataLoader>
    );
}

export function renderResourceActionMenu(menuItems: ActionMenuItem[]): React.ReactNode {
    return (
        <ul>
            {menuItems.map((item, i) => (
                <li
                    className={classNames('application-details__action-menu', {disabled: item.disabled})}
                    key={i}
                    onClick={e => {
                        e.stopPropagation();
                        if (!item.disabled) {
                            item.action();
                            document.body.click();
                        }
                    }}>
                    {item.iconClassName && <i className={item.iconClassName} />} {item.title}
                </li>
            ))}
        </ul>
    );
}

export function renderResourceButtons(
    resource: ResourceTreeNode,
    application: appModels.AbstractApplication,
    tree: appModels.AbstractApplicationTree,
    apis: ContextApis,
    appChanged: BehaviorSubject<appModels.AbstractApplication>
): React.ReactNode {
    const menuItems: Observable<ActionMenuItem[]> = getActionItems(resource, application, tree, apis, appChanged, true);
    return (
        <DataLoader load={() => menuItems}>
            {items => (
                <div className='pod-view__node__quick-start-actions'>
                    {items.map((item, i) => (
                        <ActionButton
                            disabled={item.disabled}
                            key={i}
                            action={(e: React.MouseEvent) => {
                                e.stopPropagation();
                                if (!item.disabled) {
                                    item.action();
                                    document.body.click();
                                }
                            }}
                            icon={item.iconClassName}
                            tooltip={item.title.toString().charAt(0).toUpperCase() + item.title.toString().slice(1)}
                        />
                    ))}
                </div>
            )}
        </DataLoader>
    );
}

export function syncStatusMessage(app: appModels.Application) {
    const source = getAppDefaultSource(app);
    const revision = getAppDefaultSyncRevision(app);
    const rev = app.status.sync.revision || (source ? source.targetRevision || 'HEAD' : 'Unknown');
    let message = source ? source?.targetRevision || 'HEAD' : 'Unknown';

    if (revision && source) {
        if (source.chart) {
            message += ' (' + revision + ')';
        } else if (revision.length >= 7 && !revision.startsWith(source.targetRevision)) {
            if (source.repoURL.startsWith('oci://')) {
                // Show "sha256: " plus the first 7 actual characters of the digest.
                if (revision.startsWith('sha256:')) {
                    message += ' (' + revision.substring(0, 14) + ')';
                } else {
                    message += ' (' + revision.substring(0, 7) + ')';
                }
            } else {
                message += ' (' + revision.substring(0, 7) + ')';
            }
        }
    }

    switch (app.status.sync.status) {
        case appModels.SyncStatuses.Synced:
            return (
                <span>
                    to{' '}
                    <Revision repoUrl={source.repoURL} revision={rev}>
                        {message}
                    </Revision>
                    {getAppDefaultSyncRevisionExtra(app)}{' '}
                </span>
            );
        case appModels.SyncStatuses.OutOfSync:
            return (
                <span>
                    from{' '}
                    <Revision repoUrl={source.repoURL} revision={rev}>
                        {message}
                    </Revision>
                    {getAppDefaultSyncRevisionExtra(app)}{' '}
                </span>
            );
        default:
            return <span>{message}</span>;
    }
}

export function hydrationStatusMessage(app: appModels.Application) {
    const drySource = app.status.sourceHydrator.currentOperation.sourceHydrator.drySource;
    const dryCommit = app.status.sourceHydrator.currentOperation.drySHA;
    const syncSource: ApplicationSource = {
        repoURL: drySource.repoURL,
        targetRevision:
            app.status.sourceHydrator.currentOperation.sourceHydrator.hydrateTo?.targetBranch || app.status.sourceHydrator.currentOperation.sourceHydrator.syncSource.targetBranch,
        path: app.status.sourceHydrator.currentOperation.sourceHydrator.syncSource.path
    };
    const hydratedCommit = app.status.sourceHydrator.currentOperation.hydratedSHA || '';

    switch (app.status.sourceHydrator.currentOperation.phase) {
        case appModels.HydrateOperationPhases.Hydrated:
            return (
                <span>
                    from{' '}
                    <Revision repoUrl={drySource.repoURL} revision={dryCommit}>
                        {drySource.targetRevision + ' (' + dryCommit.substr(0, 7) + ')'}
                    </Revision>
                    <br />
                    to{' '}
                    <Revision repoUrl={syncSource.repoURL} revision={hydratedCommit}>
                        {syncSource.targetRevision + ' (' + hydratedCommit.substr(0, 7) + ')'}
                    </Revision>
                </span>
            );
        case appModels.HydrateOperationPhases.Hydrating:
            return (
                <span>
                    from{' '}
                    <Revision repoUrl={drySource.repoURL} revision={drySource.targetRevision}>
                        {drySource.targetRevision}
                    </Revision>
                    <br />
                    to{' '}
                    <Revision repoUrl={syncSource.repoURL} revision={syncSource.targetRevision}>
                        {syncSource.targetRevision}
                    </Revision>
                </span>
            );
        case appModels.HydrateOperationPhases.Failed:
            return (
                <span>
                    from{' '}
                    <Revision repoUrl={drySource.repoURL} revision={dryCommit || drySource.targetRevision}>
                        {drySource.targetRevision}
                        {dryCommit && ' (' + dryCommit.substr(0, 7) + ')'}
                    </Revision>
                    <br />
                    to{' '}
                    <Revision repoUrl={syncSource.repoURL} revision={syncSource.targetRevision}>
                        {syncSource.targetRevision}
                    </Revision>
                </span>
            );
        default:
            return <span>{}</span>;
    }
}

export const HealthStatusIcon = ({state, noSpin}: {state: appModels.HealthStatus; noSpin?: boolean}) => {
    let color = COLORS.health.unknown;
    let icon = 'fa-question-circle';

    switch (state.status) {
        case appModels.HealthStatuses.Healthy:
            color = COLORS.health.healthy;
            icon = 'fa-heart';
            break;
        case appModels.HealthStatuses.Suspended:
            color = COLORS.health.suspended;
            icon = 'fa-pause-circle';
            break;
        case appModels.HealthStatuses.Degraded:
            color = COLORS.health.degraded;
            icon = 'fa-heart-broken';
            break;
        case appModels.HealthStatuses.Progressing:
            color = COLORS.health.progressing;
            icon = `fa fa-circle-notch ${noSpin ? '' : 'fa-spin'}`;
            break;
        case appModels.HealthStatuses.Missing:
            color = COLORS.health.missing;
            icon = 'fa-ghost';
            break;
    }
    let title: string = state.status;
    if (state.message) {
        title = `${state.status}: ${state.message}`;
    }
    return icon.includes('fa-spin') ? (
        <SpinningIcon color={color} qeId='utils-health-status-title' />
    ) : (
        <i qe-id='utils-health-status-title' title={title} className={'fa ' + icon + ' utils-health-status-icon'} style={{color}} />
    );
};

export const PodHealthIcon = ({state}: {state: appModels.HealthStatus}) => {
    let icon = 'fa-question-circle';

    switch (state.status) {
        case appModels.HealthStatuses.Healthy:
            icon = 'fa-check';
            break;
        case appModels.HealthStatuses.Suspended:
            icon = 'fa-check';
            break;
        case appModels.HealthStatuses.Degraded:
            icon = 'fa-times';
            break;
        case appModels.HealthStatuses.Progressing:
            icon = 'fa fa-circle-notch fa-spin';
            break;
    }
    let title: string = state.status;
    if (state.message) {
        title = `${state.status}: ${state.message}`;
    }
    return icon.includes('fa-spin') ? (
        <SpinningIcon color={'white'} qeId='utils-health-status-title' />
    ) : (
        <i qe-id='utils-health-status-title' title={title} className={'fa ' + icon} />
    );
};

export const PodPhaseIcon = ({state}: {state: appModels.PodPhase}) => {
    let className = '';
    switch (state) {
        case appModels.PodPhase.PodSucceeded:
            className = 'fa fa-check';
            break;
        case appModels.PodPhase.PodRunning:
            className = 'fa fa-circle-notch fa-spin';
            break;
        case appModels.PodPhase.PodPending:
            className = 'fa fa-circle-notch fa-spin';
            break;
        case appModels.PodPhase.PodFailed:
            className = 'fa fa-times';
            break;
        default:
            className = 'fa fa-question-circle';
            break;
    }
    return className.includes('fa-spin') ? <SpinningIcon color={'white'} qeId='utils-pod-phase-icon' /> : <i qe-id='utils-pod-phase-icon' className={className} />;
};

export const ResourceResultIcon = ({resource}: {resource: appModels.ResourceResult}) => {
    let color = COLORS.sync_result.unknown;
    let icon = 'fas fa-question-circle';

    if (!resource.hookType && resource.status) {
        switch (resource.status) {
            case appModels.ResultCodes.Synced:
                color = COLORS.sync_result.synced;
                icon = 'fa-heart';
                break;
            case appModels.ResultCodes.Pruned:
                color = COLORS.sync_result.pruned;
                icon = 'fa-trash';
                break;
            case appModels.ResultCodes.SyncFailed:
                color = COLORS.sync_result.failed;
                icon = 'fa-heart-broken';
                break;
            case appModels.ResultCodes.PruneSkipped:
                icon = 'fa-heart';
                break;
        }
        let title: string = resource.message;
        if (resource.message) {
            title = `${resource.status}: ${resource.message}`;
        }
        return <i title={title} className={'fa ' + icon} style={{color}} />;
    }
    if (resource.hookType && resource.hookPhase) {
        let className = '';
        switch (resource.hookPhase) {
            case appModels.OperationPhases.Running:
                color = COLORS.operation.running;
                className = 'fa fa-circle-notch fa-spin';
                break;
            case appModels.OperationPhases.Failed:
                color = COLORS.operation.failed;
                className = 'fa fa-heart-broken';
                break;
            case appModels.OperationPhases.Error:
                color = COLORS.operation.error;
                className = 'fa fa-heart-broken';
                break;
            case appModels.OperationPhases.Succeeded:
                color = COLORS.operation.success;
                className = 'fa fa-heart';
                break;
            case appModels.OperationPhases.Terminating:
                color = COLORS.operation.terminating;
                className = 'fa fa-circle-notch fa-spin';
                break;
        }
        let title: string = resource.message;
        if (resource.message) {
            title = `${resource.hookPhase}: ${resource.message}`;
        }
        return className.includes('fa-spin') ? <SpinningIcon color={color} qeId='utils-resource-result-icon' /> : <i title={title} className={className} style={{color}} />;
    }
    return null;
};

export const getAppOperationState = (app: appModels.Application): appModels.OperationState => {
    if (app.operation) {
        return {
            phase: appModels.OperationPhases.Running,
            message: (app.status && app.status.operationState && app.status.operationState.message) || 'waiting to start',
            startedAt: new Date().toISOString(),
            operation: {
                sync: {}
            }
        } as appModels.OperationState;
    } else if (app.metadata.deletionTimestamp) {
        return {
            phase: appModels.OperationPhases.Running,
            startedAt: app.metadata.deletionTimestamp
        } as appModels.OperationState;
    } else {
        return app.status.operationState;
    }
};

export function getOperationType(application: appModels.Application) {
    const operation = application.operation || (application.status && application.status.operationState && application.status.operationState.operation);
    if (application.metadata.deletionTimestamp && !application.operation) {
        return 'Delete';
    }
    if (operation && operation.sync) {
        return 'Sync';
    }
    return 'Unknown';
}

export const getOperationStateTitle = (app: appModels.Application): appModels.OperationStateTitle => {
    const appOperationState = getAppOperationState(app);
    const operationType = getOperationType(app);
    switch (operationType) {
        case 'Delete':
            return 'Deleting';
        case 'Sync':
            switch (appOperationState.phase) {
                case 'Running':
                    return 'Syncing';
                case 'Error':
                    return 'Sync error';
                case 'Failed':
                    return 'Sync failed';
                case 'Succeeded':
                    return 'Sync OK';
                case 'Terminating':
                    return 'Terminated';
            }
    }
    return 'Unknown';
};

export const OperationState = ({app, quiet, isButton}: {app: appModels.Application; quiet?: boolean; isButton?: boolean}) => {
    const appOperationState = getAppOperationState(app);
    if (appOperationState === undefined) {
        return null;
    }
    if (quiet && [appModels.OperationPhases.Running, appModels.OperationPhases.Failed, appModels.OperationPhases.Error].indexOf(appOperationState.phase) === -1) {
        return null;
    }

    return (
        <React.Fragment>
            <OperationPhaseIcon app={app} isButton={isButton} /> {getOperationStateTitle(app)}
        </React.Fragment>
    );
};

function isPodInitializedConditionTrue(status: any): boolean {
    if (!status?.conditions) {
        return false;
    }

    for (const condition of status.conditions) {
        if (condition.type !== 'Initialized') {
            continue;
        }
        return condition.status === 'True';
    }

    return false;
}

// isPodPhaseTerminal returns true if the pod's phase is terminal.
function isPodPhaseTerminal(phase: appModels.PodPhase): boolean {
    return phase === appModels.PodPhase.PodFailed || phase === appModels.PodPhase.PodSucceeded;
}

export function getPodStateReason(pod: appModels.State): {message: string; reason: string; netContainerStatuses: any[]} {
    if (!pod.status) {
        return {reason: 'Unknown', message: '', netContainerStatuses: []};
    }

    const podPhase = pod.status.phase;
    let reason = podPhase;
    let message = '';
    if (pod.status.reason) {
        reason = pod.status.reason;
    }

    let netContainerStatuses = pod.status.initContainerStatuses || [];
    netContainerStatuses = netContainerStatuses.concat(pod.status.containerStatuses || []);

    for (const condition of pod.status.conditions || []) {
        if (condition.type === 'PodScheduled' && condition.reason === 'SchedulingGated') {
            reason = 'SchedulingGated';
        }
    }

    const initContainers: Record<string, any> = {};

    for (const container of pod.spec.initContainers ?? []) {
        initContainers[container.name] = container;
    }

    let initializing = false;
    const initContainerStatuses = pod.status.initContainerStatuses || [];
    for (let i = 0; i < initContainerStatuses.length; i++) {
        const container = initContainerStatuses[i];
        if (container.state.terminated && container.state.terminated.exitCode === 0) {
            continue;
        }

        if (container.started && initContainers[container.name].restartPolicy === 'Always') {
            continue;
        }

        if (container.state.terminated) {
            if (container.state.terminated.reason) {
                reason = `Init:ExitCode:${container.state.terminated.exitCode}`;
            } else {
                reason = `Init:${container.state.terminated.reason}`;
                message = container.state.terminated.message;
            }
        } else if (container.state.waiting && container.state.waiting.reason && container.state.waiting.reason !== 'PodInitializing') {
            reason = `Init:${container.state.waiting.reason}`;
            message = `Init:${container.state.waiting.message}`;
        } else {
            reason = `Init:${i}/${(pod.spec.initContainers || []).length}`;
        }
        initializing = true;
        break;
    }

    if (!initializing || isPodInitializedConditionTrue(pod.status)) {
        let hasRunning = false;
        for (const container of pod.status.containerStatuses || []) {
            if (container.state.waiting && container.state.waiting.reason) {
                reason = container.state.waiting.reason;
                message = container.state.waiting.message;
            } else if (container.state.terminated && container.state.terminated.reason) {
                reason = container.state.terminated.reason;
                message = container.state.terminated.message;
            } else if (container.state.terminated && !container.state.terminated.reason) {
                if (container.state.terminated.signal !== 0) {
                    reason = `Signal:${container.state.terminated.signal}`;
                    message = '';
                } else {
                    reason = `ExitCode:${container.state.terminated.exitCode}`;
                    message = '';
                }
            } else if (container.ready && container.state.running) {
                hasRunning = true;
            }
        }

        // change pod status back to 'Running' if there is at least one container still reporting as 'Running' status
        if (reason === 'Completed' && hasRunning) {
            reason = 'Running';
            message = '';
        }
    }

    if ((pod as any).metadata.deletionTimestamp && pod.status.reason === 'NodeLost') {
        reason = 'Unknown';
        message = '';
    } else if ((pod as any).metadata.deletionTimestamp && !isPodPhaseTerminal(podPhase)) {
        reason = 'Terminating';
        message = '';
    }

    return {reason, message, netContainerStatuses};
}

export const getPodReadinessGatesState = (pod: appModels.State): {nonExistingConditions: string[]; notPassedConditions: string[]} => {
    // if pod does not have readiness gates then return empty status
    if (!pod.spec?.readinessGates?.length) {
        return {
            nonExistingConditions: [],
            notPassedConditions: []
        };
    }

    const existingConditions = new Map<string, boolean>();
    const podConditions = new Map<string, boolean>();

    const podStatusConditions = pod.status?.conditions || [];

    for (const condition of podStatusConditions) {
        existingConditions.set(condition.type, true);
        // priority order of conditions
        // e.g. if there are multiple conditions set with same name then the one which comes first is evaluated
        if (podConditions.has(condition.type)) {
            continue;
        }

        if (condition.status === 'False') {
            podConditions.set(condition.type, false);
        } else if (condition.status === 'True') {
            podConditions.set(condition.type, true);
        }
    }

    const nonExistingConditions: string[] = [];
    const failedConditions: string[] = [];

    const readinessGates: appModels.ReadinessGate[] = pod.spec?.readinessGates || [];

    for (const readinessGate of readinessGates) {
        if (!existingConditions.has(readinessGate.conditionType)) {
            nonExistingConditions.push(readinessGate.conditionType);
        } else if (podConditions.get(readinessGate.conditionType) === false) {
            failedConditions.push(readinessGate.conditionType);
        }
    }

    return {
        nonExistingConditions,
        notPassedConditions: failedConditions
    };
};

export function getConditionCategory(condition: appModels.ApplicationCondition): 'error' | 'warning' | 'info' {
    if (condition.type.endsWith('Error')) {
        return 'error';
    } else if (condition.type.endsWith('Warning')) {
        return 'warning';
    } else {
        return 'info';
    }
}

export function getAppSetConditionCategory(condition: appModels.ApplicationSetCondition): 'error' | 'warning' | 'info' {
    const status = condition.status?.toLowerCase();
    const type = condition.type;

    // ErrorOccurred with status True = error
    if (type === 'ErrorOccurred' && status === 'true') {
        return 'error';
    }
    // ParametersGenerated or ResourcesUpToDate with status False = error (indicates failure)
    if ((type === 'ParametersGenerated' || type === 'ResourcesUpToDate') && status === 'false') {
        return 'error';
    }
    // Otherwise it's informational
    return 'info';
}

export function isAppNode(node: appModels.ResourceNode) {
    return node.kind === 'Application' && node.group === 'argoproj.io';
}

export function getAppOverridesCount(app: appModels.AbstractApplication) {
    // ApplicationSets don't have overrides
    if (!isApp(app)) {
        return 0;
    }
    const source = getAppDefaultSource(app);
    if (source?.kustomize?.images) {
        return source.kustomize.images.length;
    }
    if (source?.helm?.parameters) {
        return source.helm.parameters.length;
    }
    return 0;
}

// getAppDefaultSource gets the first app source from `sources` or, if that list is missing or empty, the `source`
// field.
export function getAppDefaultSource(app?: appModels.Application) {
    if (!app) {
        return null;
    }
    return getAppSpecDefaultSource(app.spec);
}

// getAppDrySource gets the dry source from the source hydrator
export function getAppDrySource(app?: appModels.Application): appModels.ApplicationSource | null {
    if (!app) {
        return null;
    }
    const {path, targetRevision, repoURL} = app.spec.sourceHydrator?.drySource || app.spec.source;

    return {repoURL, targetRevision, path};
}

// getAppDefaultSyncRevision gets the first app revisions from `status.sync.revisions` or, if that list is missing or empty, the `revision`
// field.
export function getAppDefaultSyncRevision(app?: appModels.Application) {
    if (!app || !app.status || !app.status.sync) {
        return '';
    }
    return app.status.sync.revisions && app.status.sync.revisions.length > 0 ? app.status.sync.revisions[0] : app.status.sync.revision;
}

// getAppDefaultOperationSyncRevision gets the first app revisions from `status.operationState.syncResult.revisions` or, if that list is missing or empty, the `revision`
// field.
export function getAppDefaultOperationSyncRevision(app?: appModels.Application) {
    if (!app || !app.status || !app.status.operationState || !app.status.operationState.syncResult) {
        return '';
    }
    return app.status.operationState.syncResult.revisions && app.status.operationState.syncResult.revisions.length > 0
        ? app.status.operationState.syncResult.revisions[0]
        : app.status.operationState.syncResult.revision;
}

// getAppCurrentVersion gets the first app revisions from `status.sync.revisions` or, if that list is missing or empty, the `revision`
// field.
export function getAppCurrentVersion(app?: appModels.Application): number | null {
    if (!app || !app.status || !app.status.history || app.status.history.length === 0) {
        return null;
    }
    return app.status.history[app.status.history.length - 1].id;
}

// getAppDefaultSyncRevisionExtra gets the extra message with others revision count
export function getAppDefaultSyncRevisionExtra(app?: appModels.Application) {
    if (!app || !app.status || !app.status.sync) {
        return '';
    }

    if (app.status.sync.revisions && app.status.sync.revisions.length > 0) {
        return ` and (${app.status.sync.revisions.length - 1}) more`;
    }

    return '';
}

// getAppDefaultOperationSyncRevisionExtra gets the first app revisions from `status.operationState.syncResult.revisions` or, if that list is missing or empty, the `revision`
// field.
export function getAppDefaultOperationSyncRevisionExtra(app?: appModels.Application) {
    if (!app || !app.status || !app.status.operationState || !app.status.operationState.syncResult || !app.status.operationState.syncResult.revisions) {
        return '';
    }

    if (app.status.operationState.syncResult.revisions.length > 0) {
        return ` and (${app.status.operationState.syncResult.revisions.length - 1}) more`;
    }
    return '';
}

export function getAppSpecDefaultSource(spec: appModels.ApplicationSpec) {
    if (spec.sourceHydrator) {
        return {
            repoURL: spec.sourceHydrator.drySource.repoURL,
            targetRevision: spec.sourceHydrator.syncSource.targetBranch,
            path: spec.sourceHydrator.syncSource.path
        };
    }
    return spec.sources && spec.sources.length > 0 ? spec.sources[0] : spec.source;
}

export function isAppRefreshing(app: appModels.Application) {
    return !!(app.metadata.annotations && app.metadata.annotations[appModels.AnnotationRefreshKey]);
}

export function setAppRefreshing(app: appModels.Application) {
    if (!app.metadata.annotations) {
        app.metadata.annotations = {};
    }
    if (!app.metadata.annotations[appModels.AnnotationRefreshKey]) {
        app.metadata.annotations[appModels.AnnotationRefreshKey] = 'refreshing';
    }
}

export function refreshLinkAttrs(app: appModels.Application) {
    return {disabled: isAppRefreshing(app)};
}

export const SyncWindowStatusIcon = ({state, window}: {state: appModels.SyncWindowsState; window: appModels.SyncWindow}) => {
    let className = '';
    let color = '';
    let current = '';

    if (state.windows === undefined) {
        current = 'Inactive';
    } else {
        for (const w of state.windows) {
            if (w.kind === window.kind && w.schedule === window.schedule && w.duration === window.duration && w.timeZone === window.timeZone) {
                current = 'Active';
                break;
            } else {
                current = 'Inactive';
            }
        }
    }

    switch (current + ':' + window.kind) {
        case 'Active:deny':
        case 'Inactive:allow':
            className = 'fa fa-stop-circle';
            if (window.manualSync) {
                color = COLORS.sync_window.manual;
            } else {
                color = COLORS.sync_window.deny;
            }
            break;
        case 'Active:allow':
        case 'Inactive:deny':
            className = 'fa fa-check-circle';
            color = COLORS.sync_window.allow;
            break;
        default:
            className = 'fas fa-question-circle';
            color = COLORS.sync_window.unknown;
            current = 'Unknown';
            break;
    }

    return (
        <React.Fragment>
            <i title={current} className={className} style={{color}} /> {current}
        </React.Fragment>
    );
};

export const ApplicationSyncWindowStatusIcon = ({project, state}: {project: string; state?: appModels.ApplicationSyncWindowState}) => {
    let className = '';
    let color = '';
    let deny = false;
    let allow = false;
    let inactiveAllow = false;
    if (state?.assignedWindows !== undefined && state?.assignedWindows.length > 0) {
        if (state.activeWindows !== undefined && state.activeWindows.length > 0) {
            for (const w of state.activeWindows) {
                if (w.kind === 'deny') {
                    deny = true;
                } else if (w.kind === 'allow') {
                    allow = true;
                }
            }
        }
        for (const a of state.assignedWindows) {
            if (a.kind === 'allow') {
                inactiveAllow = true;
            }
        }
    } else {
        allow = true;
    }

    if (deny || (!deny && !allow && inactiveAllow)) {
        className = 'fa fa-stop-circle';
        if (state.canSync) {
            color = COLORS.sync_window.manual;
        } else {
            color = COLORS.sync_window.deny;
        }
    } else {
        className = 'fa fa-check-circle';
        color = COLORS.sync_window.allow;
    }

    const ctx = React.useContext(Context);

    return (
        <a href={`${ctx.baseHref}settings/projects/${project}?tab=windows`} style={{color}}>
            <i className={className} style={{color}} /> SyncWindow
        </a>
    );
};

/**
 * Automatically stops and restarts the given observable when page visibility changes.
 */
export function handlePageVisibility<T>(src: () => Observable<T>): Observable<T> {
    return new Observable<T>((observer: Observer<T>) => {
        let subscription: Subscription;
        const ensureUnsubscribed = () => {
            if (subscription) {
                subscription.unsubscribe();
                subscription = null;
            }
        };
        const start = () => {
            ensureUnsubscribed();
            subscription = src().subscribe(
                (item: T) => observer.next(item),
                err => observer.error(err),
                () => observer.complete()
            );
        };

        if (!document.hidden) {
            start();
        }

        const visibilityChangeSubscription = fromEvent(document, 'visibilitychange')
            // wait until user stop clicking back and forth to avoid restarting observable too often
            .pipe(debounceTime(500))
            .subscribe(() => {
                if (document.hidden && subscription) {
                    ensureUnsubscribed();
                } else if (!document.hidden && !subscription) {
                    start();
                }
            });

        return () => {
            visibilityChangeSubscription.unsubscribe();
            ensureUnsubscribed();
        };
    });
}

export function parseApiVersion(apiVersion: string): {group: string; version: string} {
    const parts = apiVersion.split('/');
    if (parts.length > 1) {
        return {group: parts[0], version: parts[1]};
    }
    return {version: parts[0], group: ''};
}

export function getContainerName(pod: any, containerIndex: number | null): string {
    if (containerIndex == null && pod.metadata?.annotations?.['kubectl.kubernetes.io/default-container']) {
        return pod.metadata?.annotations?.['kubectl.kubernetes.io/default-container'];
    }
    const containers = (pod.spec.containers || []).concat(pod.spec.initContainers || []);
    const container = containers[containerIndex || 0];
    return container.name;
}

export function isYoungerThanXMinutes(pod: any, x: number): boolean {
    const createdAt = moment(pod.createdAt, 'YYYY-MM-DDTHH:mm:ssZ');
    const xMinutesAgo = moment().subtract(x, 'minutes');
    return createdAt.isAfter(xMinutesAgo);
}

export const BASE_COLORS = [
    '#0DADEA', // blue
    '#DE7EAE', // pink
    '#FF9500', // orange
    '#4B0082', // purple
    '#F5d905', // yellow
    '#964B00' // brown
];

export const urlPattern = new RegExp(
    new RegExp(
        // tslint:disable-next-line:max-line-length
        /^(https?:\/\/(?:www\.|(?!www))[a-z0-9][a-z0-9-]+[a-z0-9]\.[^\s]{2,}|www\.[a-z0-9][a-z0-9-]+[a-z0-9]\.[^\s]{2,}|https?:\/\/(?:www\.|(?!www))[a-z0-9]+\.[^\s]{2,}|www\.[a-z0-9]+\.[^\s]{2,})$/,
        'gi'
    )
);

// This function determines whether an AbstractApp is an Application or an AppSet (by looking at it's kind).
// If an Application, it returns it casted to Application.
export function isApp(abstractApp: appModels.AbstractApplication): abstractApp is appModels.Application {
    return abstractApp.kind === 'Application';
}

export function getRootPathByApp(abstractApp: appModels.AbstractApplication) {
    return isApp(abstractApp) ? '/applications' : '/applicationsets';
}

// Get ApplicationSet health status from its conditions
// Priority: ErrorOccurred=True → Degraded, RolloutProgressing=True → Progressing, ResourcesUpToDate=True → Healthy, else Unknown
export function getAppSetHealthStatus(appSet: appModels.ApplicationSet): appModels.HealthStatusCode {
    const conditions = appSet.status?.conditions;
    if (!conditions || conditions.length === 0) {
        return 'Unknown';
    }

    // Check for errors first (indicates degraded state)
    const errorCondition = conditions.find(c => c.type === 'ErrorOccurred' && c.status === 'True');
    if (errorCondition) {
        return 'Degraded';
    }

    // Check if rollout is progressing
    const progressingCondition = conditions.find(c => c.type === 'RolloutProgressing' && c.status === 'True');
    if (progressingCondition) {
        return 'Progressing';
    }

    // Check if resources are up to date (healthy state)
    const upToDateCondition = conditions.find(c => c.type === 'ResourcesUpToDate' && c.status === 'True');
    if (upToDateCondition) {
        return 'Healthy';
    }

    return 'Unknown';
}

export function appQualifiedName(app: appModels.AbstractApplication, nsEnabled: boolean): string {
    return (nsEnabled ? app.metadata.namespace + '/' : '') + app.metadata.name;
}

export function appInstanceName(app: appModels.AbstractApplication): string {
    return app.metadata.namespace + '_' + app.metadata.name;
}

export function formatCreationTimestamp(creationTimestamp: string) {
    const createdAt = moment.utc(creationTimestamp).local().format('MM/DD/YYYY HH:mm:ss');
    const fromNow = moment.utc(creationTimestamp).local().fromNow();
    return (
        <span>
            {createdAt}
            <i style={{padding: '2px'}} /> ({fromNow})
        </span>
    );
}

/*
 * formatStatefulSetChange reformats a single line describing changes to immutable fields in a StatefulSet.
 * It extracts the field name and its "from" and "to" values for better readability.
 */
function formatStatefulSetChange(line: string): string {
    if (line.startsWith('-')) {
        // Remove leading "- " from the line and split into field and changes
        const [field, changes] = line.substring(2).split(':');
        if (changes) {
            // Split "from: X to: Y" into separate lines with aligned values
            const [from, to] = changes.split('to:').map(s => s.trim());
            return `   - ${field}:\n      from: ${from.replace('from:', '').trim()}\n      to:   ${to}`;
        }
    }
    return line;
}

export function formatOperationMessage(message: string): string {
    if (!message) {
        return message;
    }

    // Format immutable fields error message
    if (message.includes('attempting to change immutable fields:')) {
        const [header, ...details] = message.split('\n');
        const formattedDetails = details
            // Remove empty lines
            .filter(line => line.trim())
            // Use helper function
            .map(formatStatefulSetChange)
            .join('\n');

        return `${header}\n${formattedDetails}`;
    }

    return message;
}

export const selectPostfix = (arr: string[], singular: string, plural: string) => (arr.length > 1 ? plural : singular);

export function getUsrMsgKeyToDisplay(appName: string, msgKey: string, usrMessages: appModels.UserMessages[]) {
    const usrMsg = usrMessages?.find((msg: appModels.UserMessages) => msg.appName === appName && msg.msgKey === msgKey);
    if (usrMsg !== undefined) {
        return {...usrMsg, display: true};
    } else {
        return {appName, msgKey, display: false, duration: 1} as appModels.UserMessages;
    }
}

export const userMsgsList: {[key: string]: string} = {
    groupNodes: `Since the number of pods has surpassed the threshold pod count of 15, you will now be switched to the group node view.
                 If you prefer the tree view, you can simply click on the Group Nodes toolbar button to deselect the current view.`
};

export function getAppUrl(app: appModels.AbstractApplication): string {
    const basePath = isApp(app) ? 'applications' : 'applicationsets';
    if (typeof app.metadata.namespace === 'undefined') {
        return `${basePath}/${app.metadata.name}`;
    }
    return `${basePath}/${app.metadata.namespace}/${app.metadata.name}`;
}

/** RollingSync step for display; backend uses -1 when no step matches the app's labels. */
export function formatApplicationSetProgressiveSyncStep(step: string | undefined): string {
    if (step === '-1') {
        return 'Step: unmatched label';
    }
    return `Step: ${step ?? ''}`;
}

export const getProgressiveSyncStatusIcon = ({status, isButton}: {status: string; isButton?: boolean}) => {
    const getIconProps = () => {
        switch (status) {
            case 'Healthy':
                return {icon: 'fa-check-circle', color: COLORS.health.healthy};
            case 'Progressing':
                return {icon: 'fa-circle-notch fa-spin', color: COLORS.health.progressing};
            case 'Pending':
                return {icon: 'fa-clock', color: COLORS.health.degraded};
            case 'Waiting':
                return {icon: 'fa-clock', color: COLORS.sync.out_of_sync};
            case 'Error':
                return {icon: 'fa-times-circle', color: COLORS.health.degraded};
            case 'Synced':
                return {icon: 'fa-check-circle', color: COLORS.sync.synced};
            case 'OutOfSync':
                return {icon: 'fa-exclamation-triangle', color: COLORS.sync.out_of_sync};
            default:
                return {icon: 'fa-question-circle', color: COLORS.sync.unknown};
        }
    };

    const {icon, color} = getIconProps();
    const className = `fa ${icon}${isButton ? ' application-status-panel__item-value__status-button' : ''}`;
    return <i className={className} style={{color}} />;
};

export const getProgressiveSyncStatusColor = (status: string): string => {
    switch (status) {
        case 'Waiting':
            return COLORS.sync.out_of_sync;
        case 'Pending':
            return COLORS.health.degraded;
        case 'Progressing':
            return COLORS.health.progressing;
        case 'Healthy':
            return COLORS.health.healthy;
        case 'Error':
            return COLORS.health.degraded;
        case 'Synced':
            return COLORS.sync.synced;
        case 'OutOfSync':
            return COLORS.sync.out_of_sync;
        default:
            return COLORS.sync.unknown;
    }
};

// constant for podrequests
export const podRequests = {
    CPU: 'Requests (CPU)',
    MEMORY: 'Requests (MEM)'
} as const;

/**
 * Gets the managed-by-url annotation from an application if it exists
 * @param app The application object
 * @returns The managed-by-url value or null if not present
 */
export function getManagedByURL(app: any): string | null {
    return app?.metadata?.annotations?.['argocd.argoproj.io/managed-by-url'] || null;
}

/**
 * Gets the managed-by-url from a resource node's info field
 * @param node The resource node object
 * @returns The managed-by-url value or null if not present
 */
export function getManagedByURLFromNode(node: any): string | null {
    if (!node?.info) {
        return null;
    }

    const managedByURLInfo = node.info.find((info: any) => info.name === 'managed-by-url');
    return managedByURLInfo?.value || null;
}

/**
 * Gets the correct URL for an application link, considering managed-by-url annotation
 * @param app The application object
 * @param baseHref The current instance's base href
 * @param node Optional resource node to get managed-by-url from info field
 * @returns The URL to use for the application link
 */
export function getApplicationLinkURL(app: any, baseHref: string, node?: any): {url: string; isExternal: boolean} {
    // First try to get managed-by-url from the node's info field (for nested applications)
    let managedByURL = node ? getManagedByURLFromNode(node) : null;

    // If not found in node, try the application's metadata
    if (!managedByURL) {
        managedByURL = getManagedByURL(app);
    }

    let url, isExternal;
    if (managedByURL) {
        // Validate the managed-by URL using the same validation as external links
        if (!isValidURL(managedByURL)) {
            // If URL is invalid, fall back to local URL for security
            console.warn(`Invalid managed-by URL for application ${app.metadata.name}: ${managedByURL}`);
            url = baseHref + 'applications/' + app.metadata.namespace + '/' + app.metadata.name;
            isExternal = false;
        } else {
            url = managedByURL + '/applications/' + app.metadata.namespace + '/' + app.metadata.name;
            isExternal = true;
        }
    } else {
        url = baseHref + 'applications/' + app.metadata.namespace + '/' + app.metadata.name;
        isExternal = false;
    }
    return {url, isExternal};
}

/**
 * Gets the correct URL for an application link from a resource node, considering managed-by-url annotation
 * @param node The resource node representing an application
 * @param baseHref The current instance's base href
 * @returns The URL to use for the application link
 */
export function getApplicationLinkURLFromNode(node: any, baseHref: string): {url: string; isExternal: boolean} {
    const managedByURL = getManagedByURLFromNode(node);

    let url, isExternal;
    if (managedByURL) {
        // Validate the managed-by URL using the same validation as external links
        if (!isValidURL(managedByURL)) {
            // If URL is invalid, fall back to local URL for security
            console.warn(`Invalid managed-by URL for application ${node.name}: ${managedByURL}`);
            url = baseHref + 'applications/' + node.namespace + '/' + node.name;
            isExternal = false;
        } else {
            url = managedByURL + '/applications/' + node.namespace + '/' + node.name;
            isExternal = true;
        }
    } else {
        url = baseHref + 'applications/' + node.namespace + '/' + node.name;
        isExternal = false;
    }
    return {url, isExternal};
}

export function formatResourceInfo(name: string, value: string): {displayValue: string; tooltipValue: string} {
    const numValue = parseInt(value, 10);

    const formatCPUValue = (milliCpu: number): string => {
        return milliCpu >= 1000 ? `${(milliCpu / 1000).toFixed(1)}` : `${milliCpu}m`;
    };

    const formatMemoryValue = (milliBytes: number): string => {
        const mib = Math.round(milliBytes / (1024 * 1024 * 1000));
        return `${mib}Mi`;
    };

    const formatCPUTooltip = (milliCpu: number): string => {
        const displayValue = milliCpu >= 1000 ? `${(milliCpu / 1000).toFixed(1)} cores` : `${milliCpu}m`;
        return `CPU Request: ${displayValue}`;
    };

    const formatMemoryTooltip = (milliBytes: number): string => {
        const mib = Math.round(milliBytes / (1024 * 1024 * 1000));
        return `Memory Request: ${mib}Mi`;
    };

    if (name === 'cpu') {
        return {
            displayValue: formatCPUValue(numValue),
            tooltipValue: formatCPUTooltip(numValue)
        };
    } else if (name === 'memory') {
        return {
            displayValue: formatMemoryValue(numValue),
            tooltipValue: formatMemoryTooltip(numValue)
        };
    }

    return {
        displayValue: value,
        tooltipValue: `${name}: ${value}`
    };
}
