<?php

namespace DanielSiepmann\Videcutting\Tests\Unit;

/*
 * Copyright (C) 2020 Daniel Siepmann <coding@daniel-siepmann.de>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

use DanielSiepmann\Videcutting\Cutting;
use DanielSiepmann\Videcutting\VideoInfo;
use PHPUnit\Framework\TestCase;
use Prophecy\PhpUnit\ProphecyTrait;
use Symfony\Component\Process\Process;

/**
 * @covers DanielSiepmann\Videcutting\Cutting
 */
class CuttingTest extends TestCase
{
    use ProphecyTrait;

    /**
     * @test
     */
    public function instanceCanBeCreated(): void
    {
        $video = $this->prophesize(VideoInfo::class);
        $subject = new Cutting(
            $video->reveal()
        );

        static::assertInstanceOf(Cutting::class, $subject);
    }

    /**
     * @test
     */
    public function generatesCommandsForCutting(): void
    {
        $video = $this->prophesize(VideoInfo::class);
        $video->getStart()->willReturn('10.05.20');
        $video->getEnd()->willReturn('13.10.25');
        $video->getOriginalFilename()->willReturn('Some-Video.mp4');
        $video->getOriginalFilenameWithSuffix('cut-1')->willReturn('Some-Video-cut-1.mp4');

        $subject = new Cutting(
            $video->reveal()
        );

        $commands = [];
        foreach ($subject->getCommandsForCutting() as $command) {
            $commands[] = $command;
        }

        static::assertCount(1, $commands);
        static::assertSame(
            "ffmpeg -y -ss '10.05.20' -to '13.10.25' -i 'Some-Video.mp4' -c copy '/tmp/Some-Video-cut-1.mp4'",
            $commands[0]->getCommandLine()
        );
    }

    /**
     * @test
     */
    public function generatesCommandForGeneratingMetadata(): void
    {
        $video = $this->prophesize(VideoInfo::class);
        $video->getOriginalFilename()->willReturn('Some-Video.mp4');
        $video->getOriginalFilenameWithSuffix('metadata')->willReturn('Some-Video-metadata.mp4');

        $subject = new Cutting(
            $video->reveal()
        );

        $command = $subject->getCommandForGeneratingMetadata();

        static::assertSame(
            "ffmpeg -i 'Some-Video.mp4' -f ffmetadata '/tmp/Some-Video-metadata.txt'",
            $command->getCommandLine()
        );
    }

    /**
     * @test
     */
    public function throwsExceptionForGeneratingConcatInputFileIfNoConcatIsAvailable(): void
    {
        $video = $this->prophesize(VideoInfo::class);

        $subject = new Cutting(
            $video->reveal()
        );

        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage('No temp files for concat available. Did you call "getCommandsForCutting()" before?');
        $this->expectExceptionCode(1601455216);

        $subject->getCommandForGeneratingConcatInputFile();
    }

    /**
     * @test
     */
    public function generatesCommandsForGeneratingConcatInputFile(): void
    {
        $video = $this->prophesize(VideoInfo::class);
        $video->getStart()->willReturn('10.05.20');
        $video->getEnd()->willReturn('13.10.25');
        $video->getOriginalFilename()->willReturn('Some-Video.mp4');
        $video->getOriginalFilenameWithSuffix('cut-1')->willReturn('Some-Video-cut-1.mp4');
        $video->getOriginalFilenameWithSuffix('concat')->willReturn('Some-Video-concat.mp4');

        $subject = new Cutting(
            $video->reveal()
        );

        foreach ($subject->getCommandsForCutting() as $command) {
            // Just generate all commands to have proper internal state
        }

        $command = $subject->getCommandForGeneratingConcatInputFile();

        static::assertSame(
            'echo "file \'/tmp/Some-Video-cut-1.mp4\'" > \'/tmp/Some-Video-concat.txt\'',
            $command->getCommandLine()
        );
    }

    /**
     * @test
     */
    public function generatesCommandForGeneratingVideo(): void
    {
        $video = $this->prophesize(VideoInfo::class);
        $video->getTargetFilePath()->willReturn('Series-Name/Series-01/10-episode title.mp4');
        $video->getOriginalFilenameWithSuffix('concat')->willReturn('Series-Name_Series-01_episode-title-01-concat.mp4');
        $video->getOriginalFilenameWithSuffix('metadata')->willReturn('Series-Name_Series-01_episode-title-01-metadata.mp4');

        $subject = new Cutting(
            $video->reveal()
        );

        $command = $subject->getCommandForGeneratingVideo();

        static::assertSame(
            'ffmpeg -f concat -safe 0 -i \'/tmp/Series-Name_Series-01_episode-title-01-concat.txt\' -c copy'
            . ' -f ffmetadata -i \'/tmp/Series-Name_Series-01_episode-title-01-metadata.txt\' -c copy -map_metadata 1'
            // . ' -metadata Title="$episodeTitle"'
            . ' \'Series-Name/Series-01/10-episode title.mp4\'',
            $command->getCommandLine()
        );
    }

    /**
     * @test
     */
    public function generatesCommandForCleanup(): void
    {
        $video = $this->prophesize(VideoInfo::class);
        $video->getTargetFilePath()->willReturn('Series-Name/Series-01/10-episode title.mp4');
        $video->getOriginalFilenameWithSuffix('concat')->willReturn('Series-Name_Series-01_episode-title-01-concat.mp4');
        $video->getOriginalFilenameWithSuffix('metadata')->willReturn('Series-Name_Series-01_episode-title-01-metadata.mp4');

        $subject = new Cutting(
            $video->reveal()
        );

        $command = $subject->getCommandForCleanup();

        static::assertSame(
            'rm  \'/tmp/Series-Name_Series-01_episode-title-01-concat.txt\' \'/tmp/Series-Name_Series-01_episode-title-01-metadata.txt\'',
            $command->getCommandLine()
        );
    }

    /**
     * @test
     */
    public function generatesCommandForCleanupWithSingleTempFile(): void
    {
        $video = $this->prophesize(VideoInfo::class);
        $video->getStart()->willReturn('10.05.20');
        $video->getEnd()->willReturn('13.10.25');
        $video->getOriginalFilename()->willReturn('Some-Video.mp4');
        $video->getTargetFilePath()->willReturn('Series-Name/Series-01/10-episode title.mp4');
        $video->getOriginalFilenameWithSuffix('cut-1')->willReturn('Some-Video-cut-1.mp4');
        $video->getOriginalFilenameWithSuffix('concat')->willReturn('Series-Name_Series-01_episode-title-01-concat.mp4');
        $video->getOriginalFilenameWithSuffix('metadata')->willReturn('Series-Name_Series-01_episode-title-01-metadata.mp4');

        $subject = new Cutting(
            $video->reveal()
        );

        foreach ($subject->getCommandsForCutting() as $command) {
            // Just generate all commands to have proper internal state
        }

        $command = $subject->getCommandForCleanup();

        static::assertSame(
            'rm \'/tmp/Some-Video-cut-1.mp4\' \'/tmp/Series-Name_Series-01_episode-title-01-concat.txt\' \'/tmp/Series-Name_Series-01_episode-title-01-metadata.txt\'',
            $command->getCommandLine()
        );
    }
}