PeerTube/shared/core-utils/plugins/hooks.ts

import { HookType } from '../../models/plugins/hook-type.enum'
import { isCatchable, isPromise } from '../common/promises'

function getHookType (hookName: string) {
  if (hookName.startsWith('filter:')) return HookType.FILTER
  if (hookName.startsWith('action:')) return HookType.ACTION

  return HookType.STATIC
}

async function internalRunHook <T> (handler: Function, hookType: HookType, result: T, params: any, onError: (err: Error) => void) {
  try {
    if (hookType === HookType.FILTER) {
      const p = handler(result, params)

      if (isPromise(p)) result = await p
      else result = p

      return result
    }

    // Action/static hooks do not have result value
    const p = handler(params)

    if (hookType === HookType.STATIC) {
      if (isPromise(p)) await p

      return undefined
    }

    if (hookType === HookType.ACTION) {
      if (isCatchable(p)) p.catch((err: any) => onError(err))

      return undefined
    }
  } catch (err) {
    onError(err)
  }

  return result
}

export {
  getHookType,
  internalRunHook
}