from flask import Flask, request, jsonify
from utils import create_task, get_all_tasks, complete_task, get_task_by_id

app = Flask(__name__)

@app.route('/tasks', methods=['GET'])
def retrieve_tasks():
    tasks = get_all_tasks()
    return jsonify({"tasks": tasks}), 200

@app.route('/tasks', methods=['POST'])
def add_task():
    data = request.get_json()
    if not data or 'title' not in data:
        return jsonify({"error": "Missing 'title' in request body"}), 400
    
    title = data['title']
    description = data.get('description', '')
    
    task = create_task(title, description)
    return jsonify(task), 201

@app.route('/tasks/<task_id>/complete', methods=['PUT'])
def mark_task_complete(task_id):
    task = complete_task(task_id)
    if not task:
        return jsonify({"error": "Task not found"}), 404
    
    return jsonify(task), 200

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