<?php

namespace DanielSiepmann\Videcutting;

/*
 * 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.
 */

class VideoInfo
{
    private $filename = '';
    private $start = '';
    private $end = '';
    private $ads = [];

    public function __construct(
        string $filename,
        string $start,
        string $end,
        array $ads
    ) {
        $this->filename = $filename;
        $this->start = $start;
        $this->end = $end;
        $this->ads = $this->getParsedAds($ads);
    }

    public function getStart(): string
    {
        return $this->start;
    }

    public function getEnd(): string
    {
        return $this->end;
    }

    public function getAds(): array
    {
        return $this->ads;
    }

    public function getTitle(): string
    {
        $parts = $this->getFilenameParts();
        // Remove also the quality indicator
        return $parts[count($parts) - 2];
    }

    public function getTitleForHumans(): string
    {
        return ''
            . ($this->hasSeason() ? 'S' . str_pad($this->getSeasonNumber(), 2, '0', STR_PAD_LEFT) : '')
            . ($this->hasEpisode() ? 'E' . str_pad($this->getEpisodeNumber(), 2, '0', STR_PAD_LEFT) : '')
            . ($this->hasSeason() || $this->hasEpisode() ? ' - ' : '')
            . ucwords(str_replace('-', ' ', $this->getTitle()));
        ;
    }

    public function getTargetFilePath(): string
    {
        $folderParts = [];
        $folderParts[] = $this->getSeries();

        if ($this->hasSeason()) {
            $folderParts[] = 'Staffel-' . str_pad($this->getSeasonNumber(), 2, '0', STR_PAD_LEFT);
        }

        return implode(DIRECTORY_SEPARATOR, $folderParts)
            . DIRECTORY_SEPARATOR
            . $this->getTitleForHumans()
            . '.' . $this->getExtension();
    }

    public function getOriginalFilename(): string
    {
        return $this->filename;
    }

    public function getOriginalFilenameWithSuffix(string $suffix): string
    {
        $file = new \SplFileInfo($this->filename);

        return sprintf(
            '%s-%s.%s',
            $file->getBasename('.' . $this->getExtension()),
            $suffix,
            $this->getExtension()
        );
    }

    private function getParsedAds(array $ads): array
    {
        return array_map(function (string $ad) {
            return explode('/', $ad, 2);
        }, $ads);
    }

    private function getSeries(): string
    {
        return $this->getFilenameParts()[0];
    }

    private function hasSeason(): bool
    {
        foreach ($this->getFilenameParts() as $part) {
            if (stripos($part, 'season-') === 0) {
                return true;
            }
        }

        return false;
    }

    private function getSeasonNumber(): int
    {
        foreach ($this->getFilenameParts() as $part) {
            if (stripos($part, 'season-') === 0) {
                return (int) str_replace('season-', '', $part);
            }
        }

        throw new \Exception('No season number detected.', 1601458223);
    }

    private function hasEpisode(): bool
    {
        foreach ($this->getFilenameParts() as $part) {
            if (stripos($part, 'episode-') === 0) {
                return true;
            }
        }

        return false;
    }

    private function getEpisodeNumber(): int
    {
        foreach ($this->getFilenameParts() as $part) {
            if (stripos($part, 'episode-') === 0) {
                return (int) str_replace('episode-', '', $part);
            }
        }

        throw new \Exception('No episode number detected.', 1601458223);
    }

    private function getExtension(): string
    {
        $file = new \SplFileInfo($this->filename);

        return $file->getExtension();
    }

    private function getFilenameParts(): array
    {
        return explode('_', $this->filename);
    }
}