<?php

namespace App\Http\Controllers\Api\Course;

use App\Http\Controllers\Controller;
use App\Repositories\Criteria\Course\CourseCriteria;
use App\Repositories\Enums\CourseTypeEnum;
use App\Repositories\Enums\ModelStatusEnum;
use App\Repositories\Enums\ResponseCodeEnum;
use App\Repositories\Models\Course\Chapter;
use App\Repositories\Models\Course\Course;
use App\Repositories\Models\Course\UserRecord;
use App\Repositories\Models\UserVideoWatchRecord;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Jiannei\Response\Laravel\Support\Facades\Response;
use Overtrue\LaravelPinyin\Facades\Pinyin;
use Prettus\Validator\Contracts\ValidatorInterface;
use App\Contracts\Repositories\Course\CourseRepository;
use App\Repositories\Validators\Course\CourseValidator;

/**
 * Class CoursesController.
 *
 * @package namespace App\Http\Controllers;
 */
class CourseController extends Controller
{
    /**
     * @var CourseRepository
     */
    protected $repository;

    /**
     * @var CourseValidator
     */
    protected $validator;

    /**
     * CoursesController constructor.
     *
     * @param CourseRepository $repository
     * @param CourseValidator $validator
     */
    public function __construct(CourseRepository $repository, CourseValidator $validator)
    {
        $this->repository = $repository;
        $this->validator = $validator;
    }

    public function index(Request $request)
    {
        $this->repository->pushCriteria(CourseCriteria::class);
        $courses = $this->repository->where('status', ModelStatusEnum::OK)->where('published_at', '<', Carbon::now())->paginate($request->get('per_page', self::PAGE_NUM));

        $courses = $this->repository->parserResult($courses);
        return Response::success($courses);
    }

    /**
     * 详情
     * Author: Mead
     */
    public function show($id)
    {
//        $this->validate($request, [
//            'id' => 'required'
//        ]);
//        $id = $request->get('id');
        $course = $this->repository->where('id', $id)->first();

        $directory = [];

        $data = Chapter::query()->where('course_id', $course->id)->where('status', ModelStatusEnum::OK)->orderByDesc('sort')->get();
        foreach ($data as $d) {
            $directory[] = [
                'id' => $d['id'],
                'title' => $d['title'],
                'children' => $d->videos()->where('status', ModelStatusEnum::OK)->where('published_at', '<', Carbon::now())->orderByDesc('sort')->get(['id', 'title', 'duration', 'short_description'])->append(['duration_text', "progress"])
            ];
        }

        $comments = $course->comments()->with(['user'])->limit(self::PAGE_NUM)->orderByDesc('id')->get();

        $attaches = $course->attaches()->with(['path_resource'])->where('status', ModelStatusEnum::OK)->get(['name', 'id', 'path', 'download_times']);

        $subscribe = $course->subscribe()->where('user_id', login_user_id())->first();

        $course = $this->repository->parserResult($course);

//        $watch_record_video_id = UserVideoWatchRecord::query()->where('user_id', login_user_id())->where('course_id', $id)->orderByDesc('watched_at')->value('video_id');

        return Response::success(compact('course', 'directory', 'comments', 'attaches', 'subscribe'));
    }

    /**
     * 订阅课程
     * @param Request $request
     * Author: Mead
     */
    public function subscribe(Request $request)
    {
        $this->validate($request, ['course_id' => 'required|integer']);
        $course_id = $request->get('course_id');
        $user_id = login_user_id();
        if (UserRecord::query()->where('course_id', $course_id)->where('user_id', $user_id)->exists()) {
            return Response::success(null);
        }
        UserRecord::query()->create(['course_id' => $course_id, 'user_id' => $user_id]);
        Course::query()->where('id', $course_id)->increment('user_count');
        return Response::success(null);
    }

    public function lookCourses(Request $request)
    {
        $user_id = login_user_id();

        $course_ids = UserVideoWatchRecord::query()->where('user_id', $user_id)->distinct('course_id')->orderByDesc('id')->pluck('course_id')->toArray();
        if (count($course_ids) == 0) {
            return Response::success([]);
        }
        $courses = $this->repository->where('status', ModelStatusEnum::OK)->whereIn('id', $course_ids)->paginate($request->get('per_page', self::PAGE_NUM));
        $courses = $this->repository->parserResult($courses);
        return Response::success($courses);
    }

}