<?php

namespace App\Helpers;

use App\AlbumSources\IAlbumSource;
use App\Photo;

class ImageHelper
{
    public function generateThumbnail(
        $gdImageResource,
        Photo $photo,
        IAlbumSource $storage,
        $thumbnailInfo
    )
    {
        $thumbnailWidth = intval($thumbnailInfo['width']);
        $thumbnailHeight = intval($thumbnailInfo['height']);
        $thumbnailImageResource = imagecreatetruecolor($thumbnailWidth, $thumbnailHeight);

        imagecopyresized(
            $thumbnailImageResource,
            $gdImageResource,
            0,
            0,
            0,
            0,
            $thumbnailWidth,
            $thumbnailHeight,
            $photo->width,
            $photo->height
        );
        $tempName = tempnam('/tmp', 'blue_twilight_thumbnail_');
        rename($tempName, $tempName . '.jpg');

        // TODO make thumbnail quality configurable
        imagejpeg($thumbnailImageResource, $tempName . '.jpg', 90);
    }

    public function openImage($imagePath, &$imageInfo)
    {
        $imageInfo = getimagesize($imagePath);

        $im = false;
        $type = $imageInfo[2];
        $allowedTypes = [
            IMG_GIF,
            IMG_PNG,
            IMG_JPEG,
            IMG_WBMP
        ];

        if (!in_array($type, $allowedTypes))
        {
            return false;
        }

        switch ($type)
        {
            case IMG_GIF:
                $im = imagecreatefromgif($imagePath);
                break;

            case IMG_JPEG:
                $im = imagecreatefromjpeg($imagePath);
                break;

            case IMG_PNG:
                $im = imagecreatefrompng($imagePath);
                break;

            case IMG_WBMP:
                $im = imagecreatefromwbmp($imagePath);
                break;
        }

        return $im;
    }
}