from flask import Flask, request, jsonify

app = Flask(__name__)

# File path
FILE_PATH = 'data.txt'

@app.route('/file', methods=['GET', 'POST'])
def handle_file():
    if request.method == 'GET':
        # Read operation
        try:
            with open(FILE_PATH, 'r') as file:
                content = file.read()
            return jsonify({
                'status': 'success',
                'data': content
            }), 200
        except FileNotFoundError:
            return jsonify({
                'status': 'error',
                'message': 'File not found'
            }), 404
        except Exception as e:
            return jsonify({
                'status': 'error',
                'message': str(e)
            }), 500

    elif request.method == 'POST':
        # Write operation
        try:
            # Get the content from request
            content = request.json.get('content')
            
            if not content:
                return jsonify({
                    'status': 'error',
                    'message': 'No content provided'
                }), 400

            # Write mode can be specified in the request
            mode = request.json.get('mode', 'w')  # Default to 'w' (overwrite)
            if mode not in ['w', 'a']:  # Only allow write or append modes
                mode = 'w'

            with open(FILE_PATH, mode) as file:
                file.write(content)

            return jsonify({
                'status': 'success',
                'message': f'Content {"appended" if mode == "a" else "written"} successfully'
            }), 200

        except Exception as e:
            return jsonify({
                'status': 'error',
                'message': str(e)
            }), 500

if __name__ == '__main__':
    app.run(debug=True)