<?php

namespace App\Api;

use Carbon\Carbon;
use Illuminate\Support\Facades\Storage;
use Intervention\Image\Facades\Image as Imagee;

class ImageResize
{
    /**
     * @param string $type
     * @return string
     */
    private function mkdir(string $type)
    {
        $folder = Carbon::now()->format('Y/m/d');
        $path = "uploads/{$type}/thumbs/{$folder}";

        if (!file_exists(public_path($path))) {
            mkdir(public_path($path), 0775, true);
        }

        return $path;
    }

    /**
     * @param $path
     * @param $size
     * @param $type
     * @param bool $deleteOriginal
     * @return string
     * @throws \Exception
     */
    public function resize($path, $size, $type, $deleteOriginal = false)
    {
        // 1. Resolve source path
        $srcPath = file_exists(public_path($path))
            ? public_path($path)
            : storage_path('app/public/' . $path);

        if (!file_exists($srcPath)) {
            if (file_exists($path)) {
                $srcPath = $path;
            } else {
                // Last ditch effort: try to get from S3 if it's not local
                if (env('FILESYSTEM_DISK') == 's3' && Storage::disk('s3')->exists($path)) {
                    $fileContent = Storage::disk('s3')->get($path);
                    $tmpLocal = storage_path('app/public/temp_' . basename($path));
                    file_put_contents($tmpLocal, $fileContent);
                    $srcPath = $tmpLocal;
                    $deleteOriginal = true; // Clean up the temp download
                } else {
                    throw new \Exception("Source image not found: " . $path);
                }
            }
        }

        // 2. Prepare thumb destination
        $name = basename($path);
        $folder = $this->mkdir($type);
        $path_thumb = "{$folder}/{$name}";
        $absPathThumb = public_path($path_thumb);

        // 3. Resize and Save Thumb
        $img = Imagee::make($srcPath);
        $img->resize($size, null, function ($constraint) {
            $constraint->aspectRatio();
        });
        $img->save($absPathThumb, 100);

        // 4. Handle S3 Upload
        if (env('FILESYSTEM_DISK') == 's3') {
            Storage::disk('s3')->put($path_thumb, file_get_contents($absPathThumb));
            // Remove local thumb after S3 upload
            if (file_exists($absPathThumb)) {
                unlink($absPathThumb);
            }
        }

        // 5. Cleanup original if requested
        if ($deleteOriginal && file_exists($srcPath)) {
            unlink($srcPath);
        }

        return $path_thumb;
    }
}