from flask import Flask, jsonify, request
from flask_sqlalchemy import SQLAlchemy
from datetime import datetime

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///tokens.db'  # Use SQLite for simplicity
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy(app)

class Token(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    access_token = db.Column(db.String(255), nullable=False)
    refresh_token = db.Column(db.String(255), nullable=False)
    expiration_seconds = db.Column(db.Integer, nullable=False)
    timestamp = db.Column(db.DateTime, default=datetime.utcnow)

    def __repr__(self):
        return f'<Token {self.id}>'

# Create an application context
with app.app_context():
    db.create_all()

# API to create a new token entry
@app.route('/token', methods=['POST'])
def create_token():
    data = request.get_json()
    access_token = data.get('access_token')
    refresh_token = data.get('refresh_token')
    expiration_seconds = data.get('expiration_seconds')

    if not access_token or not refresh_token or not expiration_seconds:
        return 'Missing required fields', 400

    new_token = Token(access_token=access_token, refresh_token=refresh_token, expiration_seconds=expiration_seconds)
    db.session.add(new_token)
    db.session.commit()

    return ('', 204)

# API to get the latest token entry
@app.route('/token/latest', methods=['GET'])
def get_latest_token():
    latest_token = Token.query.order_by(Token.timestamp.desc()).first()
    
    if latest_token:
        token_info = {
            'access_token': latest_token.access_token,
            'refresh_token': latest_token.refresh_token,
            'expiration_seconds': latest_token.expiration_seconds,
            'timestamp': latest_token.timestamp.isoformat()
        }
        return jsonify({'token': token_info}), 200
    else:
        return '', 204

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5000, debug=True)