import os
import sys
from flask import Flask, jsonify
from flask_cors import CORS
from models import db, Device, DeviceHistory, MaintenanceLog
from routes.api import api_bp  # 从 api.py 导入蓝图

# 解决 Windows 下控制台输出乱码问题
sys.stdout.reconfigure(encoding='utf-8')


def create_app():
    app = Flask(__name__)

    # 1. 配置数据库路径
    basedir = os.path.abspath(os.path.dirname(__file__))

    # 👇👇👇 核心修复：自动创建 instance 文件夹 👇👇👇
    instance_path = os.path.join(basedir, 'instance')
    if not os.path.exists(instance_path):
        os.makedirs(instance_path)
        print(f"📁 检测到目录不存在，已自动创建: {instance_path}")
    # 👆👆👆 修复结束 👆👆👆

    db_path = os.path.join(instance_path, 'devices.db')

    # 配置 SQLite URI
    app.config['SQLALCHEMY_DATABASE_URI'] = f'sqlite:///{db_path}'
    app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
    app.config['JSON_AS_ASCII'] = False  # 支持中文返回

    # 2. 初始化插件
    CORS(app)  # 允许跨域
    db.init_app(app)

    # 3. 注册蓝图 (Blueprints)
    app.register_blueprint(api_bp)

    # 4. 初始化数据库表
    with app.app_context():
        # 尝试创建所有表
        db.create_all()
        # print(f"✅ 数据库连接成功: {db_path}")

    return app


# 5. 提供 Flask Shell 上下文（方便命令行调试）
app = create_app()


@app.shell_context_processor
def make_shell_context():
    return {
        'db': db,
        'Device': Device,
        'DeviceHistory': DeviceHistory,
        'MaintenanceLog': MaintenanceLog
    }


if __name__ == '__main__':
    # 启动应用
    print("🚀 服务正在启动: http://127.0.0.1:5000")
    app.run(debug=True, host='0.0.0.0', port=5000)