from flask import Blueprint, jsonify, request, current_app
import os
from werkzeug.utils import secure_filename
from app.utils import OCRModel
import torch

main = Blueprint('main', __name__)
ocr_model = OCRModel()

ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg'}

def allowed_file(filename):
    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

@main.route('/')
def index():
    return jsonify({"message": "Welcome to OCR API!"})

@main.route('/api/ocr', methods=['POST'])
def process_image():
    if 'file' not in request.files:
        return jsonify({"error": "No file part"}), 400
    
    file = request.files['file']
    if file.filename == '':
        return jsonify({"error": "No selected file"}), 400
    
    if file and allowed_file(file.filename):
        filename = secure_filename(file.filename)
        filepath = os.path.join(current_app.config['UPLOAD_FOLDER'], filename)
        file.save(filepath)
        
        try:
            result = ocr_model.process_image(filepath)
            # حذف الملف بعد المعالجة
            os.remove(filepath)
            return jsonify({"result": result})
        except Exception as e:
            return jsonify({"error": str(e)}), 500
    
    return jsonify({"error": "Invalid file type"}), 400