import { Router } from 'express'
import passport from 'passport'
import { Strategy as GitlabStrategy } from 'passport-gitlab2'
import { config } from '../../../config'
import { response } from '../../../response'
import { AuthMiddleware } from '../interface'
import { passportGeneralCallback } from '../utils'

export const GitlabMiddleware: AuthMiddleware =
  {
    getMiddleware (): Router {
      const gitlabAuth = module.exports = Router()

      passport.use(new GitlabStrategy({
        baseURL: config.gitlab.baseURL,
        clientID: config.gitlab.clientID,
        clientSecret: config.gitlab.clientSecret,
        scope: config.gitlab.scope,
        callbackURL: config.serverURL + '/auth/gitlab/callback'
      }, passportGeneralCallback))

      gitlabAuth.get('/auth/gitlab', function (req, res, next) {
        passport.authenticate('gitlab')(req, res, next)
      })

      // gitlab auth callback
      gitlabAuth.get('/auth/gitlab/callback',
        passport.authenticate('gitlab', {
          successReturnToOrRedirect: config.serverURL + '/',
          failureRedirect: config.serverURL + '/'
        })
      )

      if (!config.gitlab.scope || config.gitlab.scope === 'api'
      ) {
        // gitlab callback actions
        gitlabAuth.get('/auth/gitlab/callback/:noteId/:action', response.gitlabActions)
      }
      return gitlabAuth
    }
  }