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   wrapObsFun
  20     <P, R, H1 extends ClientFilterHookName, H2 extends ClientFilterHookName>
  21     (fun: ObservableFunction<P, R>, params: P, scope: PluginClientScope, hookParamName: H1, hookResultName: H2)
  22   {
  23     return from(this.pluginService.ensurePluginsAreLoaded(scope))
  24       .pipe(
  25         mergeMap(() => this.wrapObject(params, hookParamName)),
  26         switchMap(params => fun(params)),
  27         mergeMap(result => this.pluginService.runHook(hookResultName, result, params))
  28       )
  29   }
  30
  31   async wrapFun
  32     <P, R, H1 extends ClientFilterHookName, H2 extends ClientFilterHookName>
  33     (fun: RawFunction<P, R>, params: P, scope: PluginClientScope, hookParamName: H1, hookResultName: H2)
  34   {
  35     await this.pluginService.ensurePluginsAreLoaded(scope)
  36
  37     const newParams = await this.wrapObject(params, hookParamName)
  38     const result = fun(newParams)
  39
  40     return this.pluginService.runHook(hookResultName, result, params)
  41   }
  42
  43   runAction<T, U extends ClientActionHookName> (hookName: U, scope: PluginClientScope, params?: T) {
  44     this.pluginService.ensurePluginsAreLoaded(scope)
  45         .then(() => this.pluginService.runHook(hookName, undefined, params))
  46         .catch((err: any) => console.error('Fatal hook error.', { err }))
  47   }
  48
  49   private wrapObject<T, U extends ClientFilterHookName> (result: T, hookName: U) {
  50     return this.pluginService.runHook(hookName, result)
  51   }
  52 }