from flask import Flask
from flask_cors import CORS
import logging
from app.config.config import Config
from app.services.package_function import db

def create_app(config_class=Config):
    """Create and configure the Flask application"""
    app = Flask(__name__)
    app.config.from_object(config_class)
    
    # Initialize SQLAlchemy
    db.init_app(app)
    
    # Enable CORS
    CORS(
        app,
        resources={
            r"/api/*": {  # 使用更简洁的API路径
                "origins": "*",
                "methods": ["GET", "POST", "PUT", "DELETE"],
                "allow_headers": ["Content-Type"]
            }
        },
        supports_credentials=True
    )
    
    # Configure logging
    configure_logging(app)
    
    # 输出启动信息
    app.logger.info(f"Starting server on port {config_class.PORT}")
    
    # 导入并注册API蓝图
    from app.api.meta_data import bp as meta_data_bp
    from app.api.data_resource import bp as data_resource_bp
    from app.api.data_model import bp as data_model_bp
    from app.api.data_interface import bp as data_interface_bp
    from app.api.data_metric import bp as data_metric_bp
    from app.api.production_line import bp as production_line_bp
    from app.api.graph import bp as graph_bp
    from app.api.system import bp as system_bp
    
    # 使用更简洁的API前缀
    app.register_blueprint(meta_data_bp, url_prefix='/api/meta')
    app.register_blueprint(data_resource_bp, url_prefix='/api/resource')
    app.register_blueprint(data_model_bp, url_prefix='/api/model')
    app.register_blueprint(data_interface_bp, url_prefix='/api/interface')
    app.register_blueprint(data_metric_bp, url_prefix='/api/metric')
    app.register_blueprint(production_line_bp, url_prefix='/api/pipeline')
    app.register_blueprint(graph_bp, url_prefix='/api/graph')
    app.register_blueprint(system_bp, url_prefix='/api/system')
    
    return app

def configure_logging(app):
    """Configure logging for the application"""
    logger = logging.getLogger("app")
    handler = logging.FileHandler('flask.log', encoding='UTF-8')
    handler.setLevel(logging.INFO)
    logging_format = logging.Formatter(
        '%(asctime)s - %(levelname)s - %(filename)s - %(funcName)s - %(lineno)s - %(message)s')
    handler.setFormatter(logging_format)
    console = logging.StreamHandler()
    console.setLevel(logging.INFO)
    console.setFormatter(logging_format)
    logger.addHandler(handler)
    logger.addHandler(console)
    
    return logger