<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Storage;

class DownloadController extends Controller
{
    public function downloadImage(Request $request)
    {
        $request->validate([
            'image_path' => 'required|string',
        ]);

        $imagePath = $request->input('image_path');
        
        // Check if it's a relative path and make it absolute
        if (!filter_var($imagePath, FILTER_VALIDATE_URL)) {
            $imagePath = public_path(str_replace(url('/'), '', $imagePath));
        }

        // Validate file exists
        if (!file_exists($imagePath)) {
            Log::error("DownloadController: Image file not found at {$imagePath}");
            return response()->json(['error' => 'Image file not found.'], 404);
        }

        // Get file info
        $fileName = basename($imagePath);
        $fileExtension = pathinfo($fileName, PATHINFO_EXTENSION);
        $mimeType = $this->getMimeType($fileExtension);

        try {
            Log::info("DownloadController: Serving download for {$imagePath}");
            
            // Return the file with proper headers for download
            return response()->download($imagePath, $fileName, [
                'Content-Type' => $mimeType,
                'Content-Disposition' => 'attachment; filename="' . $fileName . '"',
            ]);
            
        } catch (\Exception $e) {
            Log::error("DownloadController: Error serving download: " . $e->getMessage());
            return response()->json(['error' => 'Failed to serve download.'], 500);
        }
    }

    private function getMimeType(string $extension): string
    {
        $mimeTypes = [
            'jpg' => 'image/jpeg',
            'jpeg' => 'image/jpeg',
            'png' => 'image/png',
            'gif' => 'image/gif',
            'webp' => 'image/webp',
            'bmp' => 'image/bmp',
            'svg' => 'image/svg+xml',
        ];

        return $mimeTypes[strtolower($extension)] ?? 'application/octet-stream';
    }
}