<?php

namespace app\Controllers;

use app\Exceptions\AccountNotFoundException;
use app\Exceptions\CommentNotFoundException;
use app\Exceptions\VideoNotFoundException;
use app\Hajeebtok;
use Pecee\SimpleRouter\SimpleRouter;
use Mimey\MimeTypes;
use app\Interfaces\IRouteController;
use app\Types\DatabaseObjects\Video;
use app\Types\DatabaseObjects\Account;
use app\Logger;
use FFMpeg;

class VideoController implements IRouteController
{
	public static function getVideo(string $id): string
	{
        $signed_in = signed_in(request());

        $video_information = new Video($id);
        $video_information->Load();
        $mime_types = new MimeTypes();

        if($signed_in) { // Signed in
            $video_path = APP_ROOT . "/usercontent/videos/$id/video.mp4";
        } else { // not signed in
            $rand = rand(1, 48);
            $video_path = APP_ROOT . "/usercontent/fake_videos/$rand/video.mp4";
        }

        CORSHelper();
        if (file_exists($video_path)) {
            $video_contents = file_get_contents($video_path);
            $video_size = filesize($video_path);

            $mime = $mime_types->getMimeType(pathinfo($video_path, PATHINFO_EXTENSION));

            $response = response();
            $response->header("Content-Type: $mime");
            $response->header("Content-Length: $video_size");
            $response->header("Cache-Control: max-age=86400, public");

            return $video_contents;
        } else {
            throw new VideoNotFoundException($id, 404);
        }
	}

	public static function getInfo(string $id): string
	{
		$video_information = new Video($id);
		$video_information->Load();
		$author_information = new Account($video_information->author_id);
		$author_information->Load();

		return api_json([
			"title" => $video_information->title,
			"description" => $video_information->description,
			"likes" => $video_information->likes,
			"dislikes" => $video_information->dislikes,
			"comments" => $video_information->comments,
			"shares" => $video_information->shares,
			"author" => [
				"id" => $author_information->id,
				"pictureHash" => $author_information->picture_hash,
				"username" => $author_information->username
			],
		]);
	}

    public static function search(): string {
        $query = input("query");
        $video = new Video(title: $query);
        $videos = $video->LoadMany();

        // idk if this is the greatest thing to do but jetbrains phpfart ai recommended it and it looks fine to me /shurg
        $accounts = Hajeebtok::$Database->Query("SELECT * FROM accounts WHERE id IN (SELECT author_id FROM videos WHERE title LIKE :title)", ["title" => "%$query%"]);
        if(empty($accounts)) throw new AccountNotFoundException(0, 404);

        $data = [];
        foreach($videos as $vid) {
            $data[] = [
                "id" => $vid["id"],
                "title" => $vid["title"],
                "description" => $vid["description"],
                "likes" => $vid["likes"],
                "dislikes" => $vid["dislikes"],
                "comments" => Hajeebtok::$Database->Single("SELECT COUNT(*) FROM comments WHERE video_id = :id", ["id" => $vid["id"]]),
                "shares" =>  Hajeebtok::$Database->Single("SELECT COUNT(*) FROM messages INNER JOIN videos ON messages.video_id = videos.id WHERE videos.id = :id", ["id" => $vid["id"]]),
                "author" => [
                    "id" => $vid["author_id"],
                    "pictureHash" => $accounts[$vid["author_id"] - 1]["picture_hash"], // kinda scuffed fix
                    "username" => $accounts[$vid["author_id"] - 1]["username"]
                ],
            ];
        }

        CORSHelper();
        return api_json($data);
    }

    public static function getThumbnail(string $id): string
    {
        $signed_in = signed_in(request());
        $video_information = new Video($id);
        $video_information->Load();

        if($signed_in) { // Signed in
            $seconds = 2;
            $video_path = APP_ROOT . "/usercontent/videos/$id/video.mp4";
            $frame_path = APP_ROOT . "/usercontent/videos/$id/thumbnail.png";
        } else { // not signed in
            $rand = rand(1, 47);
            $seconds = 6;
            $video_path = APP_ROOT . "/usercontent/fake_videos/$rand/video.mp4";
            $frame_path = APP_ROOT . "/usercontent/fake_videos/$rand/thumbnail.png";
        }

        $mime_types = new MimeTypes();
        if(!file_exists($video_path)) throw new VideoNotFoundException($id, 404);
        if(!file_exists($frame_path)) {
            Logger::Debug("Generating thumbnail for video $id");

            $ffmpeg = FFMpeg\FFMpeg::create();
            $video = $ffmpeg->open($video_path);
            $frame = $video->frame(FFMpeg\Coordinate\TimeCode::fromSeconds($seconds));
            $frame->save($frame_path);
        }

        CORSHelper();
        $mime = $mime_types->getMimeType(pathinfo($frame_path, PATHINFO_EXTENSION));
        $response = response();
        $response->header("Content-Type: $mime");
        $response->header("Cache-Control: max-age=86400, public");

        return file_get_contents($frame_path);
    }

	public static function RegisterRoutes(): void
	{
		SimpleRouter::group([
			"prefix" => "/video",
		], function () {
			SimpleRouter::get("/{id}", [VideoController::class, "getVideo"]);
            SimpleRouter::get("/{id}/info", [VideoController::class, "getInfo"]);
            SimpleRouter::get("/{id}/thumbnail", [VideoController::class, "getThumbnail"]);
			SimpleRouter::post("/upload", [VideoController::class, "uploadVideo"]);
            SimpleRouter::post("/search", [VideoController::class, "search"]);
            SimpleRouter::options("/{id}", "CORSHelper");
            SimpleRouter::options("/{id}/info", "CORSHelper");
            SimpleRouter::options("/{id}/thumbnail", "CORSHelper");
            SimpleRouter::options("/upload", "CORSHelper");
            SimpleRouter::options("/search", "CORSHelper");
		});
	}
}