<?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 Symfony\Component\Process\Process;

/**
 * @covers DanielSiepmann\Videcutting\Cutting
 */
class CuttingTest extends TestCase
{
    /**
     * @test
     */
    public function instanceCanBeCreated(): void
    {
        $video = $this->createStub(VideoInfo::class);
        $subject = new Cutting(
            $video
        );

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

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

        $subject = new Cutting(
            $video
        );

        $commands = [];
        foreach ($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 '" . sys_get_temp_dir() . "/Some-Video-cut-1.mp4'",
            $commands[0]->getCommandLine()
        );
    }

    /**
     * @test
     */
    public function generatesCommandsForCuttingWithAds(): void
    {
        $video = $this->createStub(VideoInfo::class);
        $video->method('getStart')->willReturn('1:05.20');
        $video->method('getEnd')->willReturn('13:10.25');
        $video->method('getAds')->willReturn([
            ['2:10', '3:05'],
            ['10:07', '11:10'],
        ]);
        $video->method('getOriginalFilename')->willReturn('Some-Video.mp4');
        $video->method('getOriginalFilenameWithSuffix')->willReturnOnConsecutiveCalls(
            'Some-Video-cut-1.mp4',
            'Some-Video-cut-2.mp4',
            'Some-Video-cut-3.mp4',
        );

        $subject = new Cutting(
            $video
        );

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

        static::assertCount(3, $commands, 'Did not get expected number of cutting commands');
        static::assertSame(
            "ffmpeg -y -ss '1:05.20' -to '2:10' -i 'Some-Video.mp4' -c copy '" . sys_get_temp_dir() . "/Some-Video-cut-1.mp4'",
            $commands[0]->getCommandLine()
        );
        static::assertSame(
            "ffmpeg -y -ss '3:05' -to '10:07' -i 'Some-Video.mp4' -c copy '" . sys_get_temp_dir() . "/Some-Video-cut-2.mp4'",
            $commands[1]->getCommandLine()
        );
        static::assertSame(
            "ffmpeg -y -ss '11:10' -to '13:10.25' -i 'Some-Video.mp4' -c copy '" . sys_get_temp_dir() . "/Some-Video-cut-3.mp4'",
            $commands[2]->getCommandLine()
        );
    }

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

        $subject = new Cutting(
            $video
        );

        $command = $subject->getCommandForGeneratingMetadata();

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

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

        $subject = new Cutting(
            $video
        );

        $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 generatesCommandsForGeneratingConcatInputFileWithNoAds(): void
    {
        $video = $this->createStub(VideoInfo::class);
        $video->method('getStart')->willReturn('10.05.20');
        $video->method('getEnd')->willReturn('13.10.25');
        $video->method('getAds')->willReturn([]);
        $video->method('getOriginalFilename')->willReturn('Some-Video.mp4');
        $video->method('getOriginalFilenameWithSuffix')->willReturnOnConsecutiveCalls(
            'Some-Video-cut-1.mp4',
            'Some-Video-concat.mp4'
        );

        $subject = new Cutting(
            $video
        );

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

        $command = $subject->getCommandForGeneratingConcatInputFile();

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

    /**
     * @test
     */
    public function generatesCommandsForGeneratingConcatInputFileWithAds(): void
    {
        $video = $this->createStub(VideoInfo::class);
        $video->method('getStart')->willReturn('10.05.20');
        $video->method('getEnd')->willReturn('13.10.25');
        $video->method('getAds')->willReturn([
            ['2:10', '3:05'],
            ['10:07', '11:10'],
        ]);
        $video->method('getOriginalFilename')->willReturn('Some-Video.mp4');
        $video->method('getOriginalFilenameWithSuffix')->willReturnOnConsecutiveCalls(
            'Some-Video-cut-1.mp4',
            'Some-Video-cut-2.mp4',
            'Some-Video-cut-3.mp4',
            'Some-Video-concat.mp4'
        );

        $subject = new Cutting(
            $video
        );

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

        $command = $subject->getCommandForGeneratingConcatInputFile();

        static::assertSame(
            'printf \'file ' . sys_get_temp_dir() . '/Some-Video-cut-1.mp4\nfile ' . sys_get_temp_dir() . '/Some-Video-cut-2.mp4\nfile ' . sys_get_temp_dir() . '/Some-Video-cut-3.mp4\''
            . ' > ' . sys_get_temp_dir() . '/Some-Video-concat.txt',
            $command->getCommandLine()
        );
    }

    /**
     * @test
     */
    public function generatesCommandForGeneratingVideoWithCustomTitle(): void
    {
        $video = $this->createStub(VideoInfo::class);
        $video->method('getTargetFilePath')->willReturn('Series-Name/Series-01/10-episode title.mp4');
        $video->method('getOriginalFilenameWithSuffix')->willReturnOnConsecutiveCalls(
            'Series-Name_Series-01_episode-title-01-concat.mp4',
            'Series-Name_Series-01_episode-title-01-metadata.mp4'
        );
        $video->method('getTitleForHumans')->willReturn('01 - Episode Title');

        $subject = new Cutting(
            $video
        );

        $command = $subject->getCommandForGeneratingVideo();

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

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

        $subject = new Cutting(
            $video
        );

        $command = $subject->getCommandForCleanup();

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

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

        $subject = new Cutting(
            $video
        );

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

        $command = $subject->getCommandForCleanup();

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