// client.js
// Copyright (C) 2024 DTP Technologies, LLC
// All Rights Reserved

'use strict';

import express from 'express';

import { SiteController, SiteError } from '../../lib/site-lib.js';

export default class ClientController extends SiteController {

  static get name ( ) { return 'ClientController'; }
  static get slug ( ) { return 'client'; }

  constructor (dtp) {
    super(dtp, ClientController.slug);
    this.dtp = dtp;
  }

  async start ( ) {
    const { dtp } = this;

    const router = express.Router();
    dtp.app.use('/client', router);

    const { limiter: limiterService } = dtp.services;
    const limiterConfig = limiterService.config.client;

    function checkClientOwnership (req, res, next) {
      if (!res.locals.client.user._id.equals(req.user._id)) {
        throw new SiteError(401, 'This is not your client');
      }
      return next();
    }

    function checkProjectOwnership (req, res, next) {
      if (!res.locals.project.user._id.equals(req.user._id)) {
        throw new SiteError(401, 'This is not your client');
      }
      return next();
    }

    router.param('clientId', this.populateClientId.bind(this));
    router.param('projectId', this.populateProjectId.bind(this));

    router.post(
      '/:clientId/project',
      limiterService.create(limiterConfig.postProjectCreate),
      checkClientOwnership,
      this.postProjectCreate.bind(this),
    );

    router.post(
      '/',
      limiterService.create(limiterConfig.postCreateClient),
      this.postCreateClient.bind(this),
    );

    router.get(
      '/:clientId/project/create',
      limiterService.create(limiterConfig.getProjectCreate),
      checkClientOwnership,
      this.getProjectCreate.bind(this),
    );

    router.get(
      '/:clientId/project/:projectId',
      limiterService.create(limiterConfig.getProjectView),
      checkProjectOwnership,
      this.getProjectView.bind(this),
    );

    router.get(
      '/create',
      limiterService.create(limiterConfig.getClientCreate),
      this.getClientCreate.bind(this),
    );

    router.get(
      '/:clientId',
      limiterService.create(limiterConfig.getClientView),
      checkClientOwnership,
      this.getClientView.bind(this),
    );

    router.get(
      '/',
      limiterService.create(limiterConfig.getHome),
      this.getHome.bind(this),
    );

    return router;
  }

  async populateClientId (req, res, next, clientId) {
    const { client: clientService } = this.dtp.services;
    try {
      res.locals.client = await clientService.getClientById(clientId);
      if (!res.locals.client) {
        throw new SiteError(404, 'Client not found');
      }
      if (!res.locals.client.user._id.equals(req.user._id)) {
        throw new SiteError(401, 'This is not your client');
      }
      return next();
    } catch (error) {
      this.log.error('failed to populate client', { error });
      return next(error);
    }
  }

  async populateProjectId (req, res, next, projectId) {
    const { client: clientService } = this.dtp.services;
    try {
      res.locals.project = await clientService.getProjectById(projectId);
      if (!res.locals.project) {
        throw new SiteError(404, 'Project not found');
      }
      if (!res.locals.project.user._id.equals(req.user._id)) {
        throw new SiteError(401, 'This is not your project');
      }
      return next();
    } catch (error) {
      this.log.error('failed to populate project', { error });
      return next(error);
    }
  }

  async postProjectCreate (req, res, next) {
    const { client: clientService } = this.dtp.services;
    try {
      res.locals.project = await clientService.createProject(res.locals.client, req.body);
      res.redirect(`/client/${res.locals.client._id}/project/${res.locals.project._id}`);
    } catch (error) {
      this.log.error('failed to create client project', { error });
      return next(error);
    }
  }

  async postCreateClient (req, res, next) {
    const { client: clientService } = this.dtp.services;
    try {
      res.locals.client = await clientService.createClient(req.user, req.body);
      res.redirect(`/client/${res.locals.client._id}`);
    } catch (error) {
      this.log.error('failed to create client', { error });
      return next(error);
    }
  }

  async getProjectCreate (req, res) {
    res.render('client/project/create');
  }

  async getProjectView (req, res, next) {
    const { task: taskService } = this.dtp.services;
    try {
      res.locals.taskGrid = await taskService.getTaskGridForProject(res.locals.project);
      res.render('client/project/view');
    } catch (error) {
      this.log.error('failed to present project view', { error });
      return next(error);
    }
  }

  async getClientCreate (req, res) {
    res.render('client/create');
  }

  async getClientView (req, res, next) {
    const { client: clientService } = this.dtp.services;
    try {
      res.locals.projects = await clientService.getProjectsForClient(res.locals.client);
      res.render('client/view');
    } catch (error) {
      this.log.error('failed to present client home view', { error });
      return next(error);
    }
  }

  async getHome (req, res, next) {
    const { client: clientService } = this.dtp.services;
    try {
      res.locals.clients = await clientService.getClientsForUser(req.user);
      res.render('client/dashboard');
    } catch (error) {
      this.log.error('failed to present client home view', { error });
      return next(error);
    }
  }
}