<?php

namespace App\Http\Controllers;

use App\Models\Programs;
use App\Models\ProgramVideos;
use App\Models\VideoComments;
use App\Models\VideoParts;
use App\Util\ProgramVideoUtil;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\QueryException;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Support\Facades\DB;

class ProgramConstructController extends BaseController
{
    // region Views
    public function index(Request $request) {
        $keyword = $request->get("keyword", "");
        $status = $request->get("status", "0");
        $query = Programs::query()->with(["appends", "video_pivots.video"])->where("status", $status, 0)->orderByDesc("created_at");
        if ($keyword) {
            $keyword_split = explode(" ", $keyword);
            foreach ($keyword_split as $_keyword) {
                $_keyword = trim($_keyword);
                if (mb_strlen($_keyword) > 0) {
                    $query->where(function (Builder $_query) use ($_keyword) {
                        $_query
                            ->where("name", "like", "%{$_keyword}%")
                            ->orWhere("difficulty", "like", "%{$_keyword}%")
                            ->orWhere("desc", "like", "%{$_keyword}%");
                    });
                }
            }
        }
        $programs = $query->paginate(10)->withQueryString();;
        return view("program.construct.index", [
            "keyword" => $keyword,
            "programs"=>$programs,
        ]);
    }

    public function add(Request $request) {
        return view("program.construct.create", [
            "program"=>new Programs()
        ]);
    }

    public function from_comment(Request $request, VideoComments $comment) {
        return redirect(route("program.construct.batch_add"))->withInput([
            "bvid"=>$comment->video->bvid,
            "content"=>$comment->content
        ]);
    }

    public function batch_add(Request $request) {
        return view("program.construct.batch_add");
    }

    public function edit(Request $request, Programs $program) {
        return view("program.construct.create", [
            "program"=>$program
        ]);
    }
    // endregion

    // region Form Submit
    public function create(Request $request) {
        $request->validate([
            "name" => ["required"]
        ]);
        $program = new Programs();
        $createPayload = $request->only(["name", "difficulty", "desc"]);
        $program->fill($createPayload);
        $program->status = $request->post("status", 0);
        $program->save();
        return redirect(route("program.construct.edit", ["program"=>$program->id]));
    }

    public function batch_create(Request $request) {
        $request->validate([
            'bvid' => ['required'],
            'content' => ['required'],
        ]);
        $bvid = $request->post("bvid");
        $content = $request->post("content");
        $count = ProgramVideos::query()->where("video_bvid", "=", $bvid)->count();
        if ($count > 0) {
            return back()->withInput()->withErrors([
                "bvid" => "该BVID下已有{$count}个节目关联，请手动添加"
            ]);
        }
        $regex = "/^(p(?P<part>\d{1,2})[-# _:,)]+)?(?P<time>(\d{1,2}[:：])?\d{1,3}[:：]\d{1,2})\s*(?P<content>.+)$/ui";
        $video_parts = VideoParts::query()->where("bvid", "=", $bvid)->get();
        DB::beginTransaction();
        try {
            foreach (explode("\n", $content) as $line) {
                $match = [];
                $match_count = preg_match($regex, $line, $match);
                if ($match_count === 0) {
                    continue;
                }
                $time = $match["time"];
                $time = str_replace("：", ":", $time);
                while (substr_count($time, ":") < 2) {
                    $time = "0:".$time;
                }
                $program = new Programs();
                $program->name = trim($match["content"]);
                $video_pivot = new ProgramVideos();
                $video_pivot->video_bvid = $bvid;
                $video_pivot->start_part = empty($match["part"]) ? 1 : $match["part"];
                $video_pivot->start_time = $time;
                $program->save();
                $program->video_pivots()->save($video_pivot);
            }
            DB::commit();
        } catch (QueryException $e) {
            DB::rollBack();
            return back()->withInput()->withErrors([
                "content" => $e->getMessage()
            ]);
        }
        ProgramVideoUtil::fix_created_at_by_part_info($bvid, true);
        return redirect(route("program.construct.list"));
    }

    public function submit(Request $request, Programs $program) {
        $request->validate([
            "name" => ["required"]
        ]);
        $updatePayload = $request->only(["name", "difficulty", "desc"]);
        $program->status = $request->post("status", 0);
        $program->update($updatePayload);
        return view("program.construct.create", [
            "program"=>$program
        ]);
    }
    // endregion
}