#!/usr/bin/env python3 from decimal import Decimal import os from dotenv import load_dotenv from flask import Flask, request, jsonify import subprocess import json from datetime import datetime, timedelta load_dotenv() # This will load environment variables from a .env file if it exists TIME_DIFF_LIMIT = int(os.getenv('TIME_DIFF_LIMIT', 2)) # Default to 2mins if not set app = Flask(__name__) def fetch_account_name(account_no): try: result = subprocess.run(['./fetchname.sh', account_no], capture_output=True, text=True, check=True) response = json.loads(result.stdout) if response.get('success'): return response.get('accountName') except (subprocess.CalledProcessError, json.JSONDecodeError) as e: app.logger.error(f"Error fetching account name: {str(e)}") return None def verify_transaction(benef_name, abs_amount, request_time, tx_data_list): for tx_data in tx_data_list: required_keys = ['trxDate', 'benefName', 'absAmount'] if not all(key in tx_data for key in required_keys): continue # Skip this transaction if it's missing required keys try: tx_time = datetime.strptime(tx_data['trxDate'], "%Y-%m-%d %H:%M:%S") time_diff = abs(tx_time - request_time) tx_benef_name = tx_data['benefName'].strip().lower() if (tx_benef_name == benef_name.strip().lower() and compare_amounts(tx_data['absAmount'], abs_amount) and time_diff <= timedelta(minutes=TIME_DIFF_LIMIT)): # Return both verification status and transaction data return True, tx_data except ValueError as e: app.logger.error(f"Error processing transaction: {str(e)}") return False, None def compare_amounts(amount1, amount2): """Compare two amount strings as Decimal objects.""" return Decimal(amount1) == Decimal(amount2) @app.route('/verify-payment', methods=['POST']) def verify_payment(): data = request.json benef_name = data.get('benefName', '').strip() account_no = data.get('accountNo') abs_amount = data.get('absAmount') time_str = data.get('time') if not all([abs_amount, time_str]): return jsonify({"success": False, "message": "Missing required parameters"}), 400 if not benef_name and not account_no: return jsonify({"success": False, "message": "Either benefName or accountNo must be provided"}), 400 try: request_time = datetime.strptime(time_str, "%Y-%m-%d %H:%M") except ValueError: return jsonify({"success": False, "message": "Invalid time format"}), 400 try: result = subprocess.run(['./tx.sh'], capture_output=True, text=True, check=True) tx_response = json.loads(result.stdout) app.logger.debug(f"tx_response: {json.dumps(tx_response, indent=2)}") if not tx_response.get('success'): return jsonify({"success": False, "message": f"Error from tx.sh: {tx_response.get('reasonText', 'Unknown error')}"}), 500 tx_data_list = tx_response.get('data', []) if not tx_data_list: return jsonify({"success": False, "message": "No transaction data found"}), 404 except subprocess.CalledProcessError as e: return jsonify({"success": False, "message": f"Error executing tx.sh: {str(e)}", "stderr": e.stderr}), 500 except json.JSONDecodeError as e: return jsonify({"success": False, "message": f"Error parsing tx.sh output: {str(e)}", "output": result.stdout}), 500 # First, try to verify with benefName if provided if benef_name: verified, tx_data = verify_transaction(benef_name, abs_amount, request_time, tx_data_list) if verified: return jsonify({ "success": True, "message": "Payment verified using beneficiary name", "transaction": { "accountNo": tx_data.get('accountNo'), "curCode": tx_data.get('curCode'), "curCodeDesc": tx_data.get('curCodeDesc'), "trxNumber": tx_data.get('trxNumber'), "trxNumber2": tx_data.get('trxNumber2'), "trxDate": tx_data.get('trxDate'), "trxValDate": tx_data.get('trxValDate'), "absAmount": tx_data.get('absAmount'), "baseAmount": tx_data.get('baseAmount'), "foreignAmount": tx_data.get('foreignAmount'), "descr1": tx_data.get('descr1'), "descr2": tx_data.get('descr2'), "descr3": tx_data.get('descr3'), "trxType": tx_data.get('trxType'), "AddDate": tx_data.get('AddDate'), "bankCode": tx_data.get('bankCode'), "bankName": tx_data.get('bankName'), "benefName": tx_data.get('benefName'), "otherAccountNo": tx_data.get('otherAccountNo'), "fromAcc": tx_data.get('fromAcc'), "imageHash": tx_data.get('imageHash'), "bankColor": tx_data.get('bankColor') } }) # If benefName verification failed or wasn't provided, try with accountNo if account_no: fetched_name = fetch_account_name(account_no) if fetched_name: verified, tx_data = verify_transaction(fetched_name, abs_amount, request_time, tx_data_list) if verified: return jsonify({ "success": True, "message": "Payment verified using account number", "transaction": { "accountNo": tx_data.get('accountNo'), "curCode": tx_data.get('curCode'), "curCodeDesc": tx_data.get('curCodeDesc'), "trxNumber": tx_data.get('trxNumber'), "trxNumber2": tx_data.get('trxNumber2'), "trxDate": tx_data.get('trxDate'), "trxValDate": tx_data.get('trxValDate'), "absAmount": tx_data.get('absAmount'), "baseAmount": tx_data.get('baseAmount'), "foreignAmount": tx_data.get('foreignAmount'), "descr1": tx_data.get('descr1'), "descr2": tx_data.get('descr2'), "descr3": tx_data.get('descr3'), "trxType": tx_data.get('trxType'), "AddDate": tx_data.get('AddDate'), "bankCode": tx_data.get('bankCode'), "bankName": tx_data.get('bankName'), "benefName": tx_data.get('benefName'), "otherAccountNo": tx_data.get('otherAccountNo'), "fromAcc": tx_data.get('fromAcc'), "imageHash": tx_data.get('imageHash'), "bankColor": tx_data.get('bankColor') } }) # If both verifications fail return jsonify({"success": False, "message": "Transaction not found, contact support"}) if __name__ == '__main__': debug_mode = os.getenv('APP_DEBUG', 'False').lower() in ('true', '1', 't') port = int(os.getenv('PORT', 5000)) app.run(host='0.0.0.0', port=port, debug=debug_mode)