<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Services\GoogleVisionOcrService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;

class GoogleVisionOcrController extends Controller
{
    /**
     * Upload passport image and extract fields using Google Cloud Vision API.
     */
    public function extractPassport(Request $request)
    {
        $validator = Validator::make($request->all(), [
            'passport_file' => 'required|file|image|max:10240', // Max 10MB
        ]);

        if ($validator->fails()) {
            return response()->json([
                'success' => false,
                'message' => 'Validation error.',
                'errors'  => $validator->errors(),
            ], 422);
        }

        $file = $request->file('passport_file');
        
        $result = GoogleVisionOcrService::extractPassportData($file);

        if (!$result['success']) {
            return response()->json([
                'success' => false,
                'message' => $result['message'] ?? 'Could not extract data from passport image.',
                'data'    => $result['data'] ?? null,
            ], 400);
        }

        return response()->json([
            'success' => true,
            'data'    => $result['data'],
        ], 200);
    }
}