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

   1 import { Injectable } from '@angular/core'
   2 import { PluginService } from '@app/core/plugins/plugin.service'
   3 import { ClientActionHookName, ClientFilterHookName } from '@shared/models/plugins/client-hook.model'
   4 import { from, Observable } from 'rxjs'
   5 import { mergeMap, switchMap } from 'rxjs/operators'
   6 import { ServerService } from '@app/core/server'
   7 import { PluginClientScope } from '@shared/models/plugins/plugin-client-scope.type'
   8
   9 type RawFunction<U, T> = (params: U) => T
  10 type ObservableFunction<U, T> = RawFunction<U, Observable<T>>
  11
  12 @Injectable()
  13 export class HooksService {
  14   constructor (
  15     private server: ServerService,
  16     private pluginService: PluginService
  17   ) { }
  18
  19   wrapObject<T, U extends ClientFilterHookName> (result: T, hookName: U) {
  20     return this.pluginService.runHook(hookName, result)
  21   }
  22
  23   wrapObsFun
  24     <P, R, H1 extends ClientFilterHookName, H2 extends ClientFilterHookName>
  25     (fun: ObservableFunction<P, R>, params: P, scope: PluginClientScope, hookParamName: H1, hookResultName: H2) {
  26     return from(this.pluginService.ensurePluginsAreLoaded(scope))
  27       .pipe(
  28         mergeMap(() => this.wrapObject(params, hookParamName)),
  29         switchMap(params => fun(params)),
  30         mergeMap(result => this.pluginService.runHook(hookResultName, result, params))
  31       )
  32   }
  33
  34   async wrapFun<U, T, V extends ClientFilterHookName> (fun: RawFunction<U, T>, params: U, hookName: V) {
  35     const result = fun(params)
  36
  37     return this.pluginService.runHook(hookName, result, params)
  38   }
  39
  40   runAction<T, U extends ClientActionHookName> (hookName: U, scope: PluginClientScope, params?: T) {
  41     this.pluginService.ensurePluginsAreLoaded(scope)
  42         .then(() => this.pluginService.runHook(hookName, params))
  43         .catch((err: any) => console.error('Fatal hook error.', { err }))
  44   }
  45 }