import { from, Observable } from 'rxjs'
import { mergeMap, switchMap } from 'rxjs/operators'
import { Injectable } from '@angular/core'
import { PluginService } from '@app/core/plugins/plugin.service'
import { ClientActionHookName, ClientFilterHookName } from '@shared/models/plugins/client-hook.model'
import { PluginClientScope } from '@shared/models/plugins/plugin-client-scope.type'
type RawFunction<U, T> = (params: U) => T
type ObservableFunction<U, T> = RawFunction<U, Observable<T>>
@Injectable()
export class HooksService {
constructor (private pluginService: PluginService) { }
wrapObsFun
<P, R, H1 extends ClientFilterHookName, H2 extends ClientFilterHookName>
(fun: ObservableFunction<P, R>, params: P, scope: PluginClientScope, hookParamName: H1, hookResultName: H2) {
return from(this.pluginService.ensurePluginsAreLoaded(scope))
.pipe(
mergeMap(() => this.wrapObjectWithoutScopeLoad(params, hookParamName)),
switchMap(params => fun(params)),
mergeMap(result => this.pluginService.runHook(hookResultName, result, params))
)
}
async wrapFun
<P, R, H1 extends ClientFilterHookName, H2 extends ClientFilterHookName>
(fun: RawFunction<P, R>, params: P, scope: PluginClientScope, hookParamName: H1, hookResultName: H2) {
await this.pluginService.ensurePluginsAreLoaded(scope)
const newParams = await this.wrapObjectWithoutScopeLoad(params, hookParamName)
const result = fun(newParams)
return this.pluginService.runHook(hookResultName, result, params)
}
runAction<T, U extends ClientActionHookName> (hookName: U, scope: PluginClientScope, params?: T) {
this.pluginService.ensurePluginsAreLoaded(scope)
.then(() => this.pluginService.runHook(hookName, undefined, params))
.catch((err: any) => console.error('Fatal hook error.', { err }))
}
async wrapObject<T, U extends ClientFilterHookName> (result: T, scope: PluginClientScope, hookName: U) {
await this.pluginService.ensurePluginsAreLoaded(scope)
return this.wrapObjectWithoutScopeLoad(result, hookName)
}
private wrapObjectWithoutScopeLoad<T, U extends ClientFilterHookName> (result: T, hookName: U) {
return this.pluginService.runHook(hookName, result)
}
}