"""
Flask应用初始化模块
负责创建和配置Flask应用实例
"""

from flask import Flask
from flask_cors import CORS


def create_app():
    """
    创建并配置Flask应用
    
    Returns:
        Flask: 配置好的Flask应用实例
    """
    app = Flask(__name__)
    
    # 配置跨域支持
    CORS(app, resources={
        r"/api/*": {
            "origins": ["http://localhost:3000", "http://127.0.0.1:3000"],
            "methods": ["GET", "POST", "PUT", "DELETE", "OPTIONS"],
            "allow_headers": ["Content-Type", "Authorization"]
        }
    })
    
    # 注册蓝图
    from app.routes import api_bp
    app.register_blueprint(api_bp, url_prefix='/api')
    
    return app