client/src/app/core/plugins/hooks.service.ts

   1 import { from, Observable } from 'rxjs'
   2 import { mergeMap, switchMap } from 'rxjs/operators'
   3 import { Injectable } from '@angular/core'
   4 import { PluginService } from '@app/core/plugins/plugin.service'
   5 import { ClientActionHookName, ClientFilterHookName, PluginClientScope } from '@shared/models'
   6 import { AuthService, AuthStatus } from '../auth'
   7
   8 type RawFunction<U, T> = (params: U) => T
   9 type ObservableFunction<U, T> = RawFunction<U, Observable<T>>
  10
  11 @Injectable()
  12 export class HooksService {
  13   constructor (
  14     private authService: AuthService,
  15     private pluginService: PluginService
  16   ) {
  17     // Run auth hooks
  18     this.authService.userInformationLoaded
  19       .subscribe(() => this.runAction('action:auth-user.information-loaded', 'common', { user: this.authService.getUser() }))
  20
  21     this.authService.loginChangedSource.subscribe(obj => {
  22       if (obj === AuthStatus.LoggedIn) {
  23         this.runAction('action:auth-user.logged-in', 'common')
  24       } else if (obj === AuthStatus.LoggedOut) {
  25         this.runAction('action:auth-user.logged-out', 'common')
  26       }
  27     })
  28   }
  29
  30   wrapObsFun
  31     <P, R, H1 extends ClientFilterHookName, H2 extends ClientFilterHookName>
  32     (fun: ObservableFunction<P, R>, params: P, scope: PluginClientScope, hookParamName: H1, hookResultName: H2) {
  33     return from(this.pluginService.ensurePluginsAreLoaded(scope))
  34       .pipe(
  35         mergeMap(() => this.wrapObjectWithoutScopeLoad(params, hookParamName)),
  36         switchMap(params => fun(params)),
  37         mergeMap(result => this.pluginService.runHook(hookResultName, result, params))
  38       )
  39   }
  40
  41   async wrapFun
  42     <P, R, H1 extends ClientFilterHookName, H2 extends ClientFilterHookName>
  43     (fun: RawFunction<P, R>, params: P, scope: PluginClientScope, hookParamName: H1, hookResultName: H2) {
  44     await this.pluginService.ensurePluginsAreLoaded(scope)
  45
  46     const newParams = await this.wrapObjectWithoutScopeLoad(params, hookParamName)
  47     const result = fun(newParams)
  48
  49     return this.pluginService.runHook(hookResultName, result, params)
  50   }
  51
  52   runAction<T, U extends ClientActionHookName> (hookName: U, scope: PluginClientScope, params?: T) {
  53     this.pluginService.ensurePluginsAreLoaded(scope)
  54         .then(() => this.pluginService.runHook(hookName, undefined, params))
  55         .catch((err: any) => console.error('Fatal hook error.', { err }))
  56   }
  57
  58   async wrapObject<T, U extends ClientFilterHookName> (result: T, scope: PluginClientScope, hookName: U) {
  59     await this.pluginService.ensurePluginsAreLoaded(scope)
  60
  61     return this.wrapObjectWithoutScopeLoad(result, hookName)
  62   }
  63
  64   private wrapObjectWithoutScopeLoad<T, U extends ClientFilterHookName> (result: T, hookName: U) {
  65     return this.pluginService.runHook(hookName, result)
  66   }
  67 }