import os
import sys
import json
import mimetypes
from datetime import datetime
from flask import Flask, send_from_directory, jsonify
from flask_cors import CORS
from flask_apscheduler import APScheduler

# ==============================================================================
# ✅ 1. 核心模块引用
# ==============================================================================
try:
    # [新增] 导入配置类
    from config import Config

    # 数据库实例
    from extensions import db

    # 数据模型
    from models import Device, DeviceHistory

    # 核心业务逻辑 (爬虫)
    from services.core import execute_monitor_task

    # [新增] 核心业务逻辑 (IoT) - 用于定时任务
    from services.iot_api import sync_iot_data_service

    # 路由蓝图
    try:
        from routes.api import api_bp as device_bp
        # [新增] 导入保存逻辑，供定时任务复用
        from routes.api import save_iot_cards_to_db, calculate_offset
    except ImportError:
        from routes.api import device_bp, save_iot_cards_to_db, calculate_offset

except ImportError as e:
    print(f"❌ 严重错误: 模块导入失败。请检查文件名和变量名。详细信息: {e}")
    sys.exit(1)


# ==============================================================================
# 2. 路径计算 (辅助静态文件服务)
# ==============================================================================
# 注意：Config 类中已经处理了数据库路径，这里主要处理 web_dist 静态资源路径
def get_base_path():
    if getattr(sys, 'frozen', False):
        if hasattr(sys, '_MEIPASS'):
            return sys._MEIPASS
        else:
            return os.path.dirname(os.path.abspath(sys.executable))
    else:
        return os.path.abspath(os.path.dirname(__file__))


BASE_DIR = get_base_path()
STATIC_FOLDER = os.path.join(BASE_DIR, 'web_dist')
INSTANCE_FOLDER = os.path.join(BASE_DIR, 'instance')

# 修复 Windows MIME 类型
mimetypes.add_type('application/javascript', '.js')
mimetypes.add_type('text/css', '.css')


# ==============================================================================
# 3. 定时任务逻辑 (同时运行 爬虫 + IoT同步)
# ==============================================================================
def auto_monitor_job(app):
    """定时任务具体执行逻辑"""
    with app.app_context():
        print(f"⏰ [定时任务] 启动时间: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")

        # --- 任务 A: 爬虫更新 ---
        if execute_monitor_task:
            try:
                task_result = execute_monitor_task()
                if task_result:
                    scraped_list = task_result.get('device_list', [])
                    current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
                    count = 0
                    for item in scraped_list:
                        d_name = item.get('name')
                        if not d_name: continue

                        device = Device.query.filter_by(name=d_name).first()
                        if not device:
                            device = Device(name=d_name, source=item.get('source'), install_site="")
                            db.session.add(device)
                            db.session.flush()

                        device.status = item.get('status')
                        device.current_value = item.get('value')
                        device.latest_time = item.get('target_time')
                        device.check_time = current_time
                        device.json_data = json.dumps(item.get('raw_json', {}), ensure_ascii=False)
                        device.offset = calculate_offset(item.get('target_time'))

                        db.session.add(DeviceHistory(
                            device_id=device.id,
                            status=device.status,
                            result_data=device.current_value,
                            data_time=item.get('target_time'),
                            json_data=device.json_data
                        ))
                        count += 1
                    print(f"✅ [定时任务-爬虫] 更新 {count} 台")
                else:
                    print("⚠️ [定时任务-爬虫] 未获取到数据")
            except Exception as e:
                print(f"❌ [定时任务-爬虫] 异常: {e}")

        # --- 任务 B: IoT 同步 (新增) ---
        if sync_iot_data_service:
            try:
                # 1. 获取数据
                iot_list = sync_iot_data_service()
                # 2. 保存入库 (复用 api.py 中的逻辑)
                count_iot, err = save_iot_cards_to_db(iot_list)
                if err:
                    print(f"❌ [定时任务-IoT] 错误: {err}")
                else:
                    print(f"✅ [定时任务-IoT] 更新 {count_iot} 张")
            except Exception as e:
                print(f"❌ [定时任务-IoT] 异常: {e}")

        # 统一提交事务
        try:
            db.session.commit()
            print("💾 [定时任务] 数据库事务提交完成")
        except Exception as e:
            db.session.rollback()
            print(f"❌ [定时任务] 提交失败: {e}")


# ==============================================================================
# 4. Flask 应用工厂
# ==============================================================================
def create_app():
    # 指定静态文件夹
    app = Flask(__name__, static_folder=STATIC_FOLDER)
    CORS(app)

    # 1. 确保 instance 目录存在
    if not os.path.exists(INSTANCE_FOLDER):
        os.makedirs(INSTANCE_FOLDER, exist_ok=True)

    # ==========================================================
    # ✅ 2. 核心修复：加载 config.py 中的配置
    # ==========================================================
    app.config.from_object(Config)

    # 打印一下关键配置，确保 IoT 配置已加载 (调试用)
    # print(f"DEBUG Config Loaded: IOT_APP_ID={app.config.get('IOT_APP_ID')}")

    # 3. 初始化扩展
    db.init_app(app)

    scheduler = APScheduler()
    scheduler.init_app(app)
    scheduler.start()

    # 4. 添加定时任务 (每天 12:00)
    scheduler.add_job(
        id='daily_monitor_task',
        func=auto_monitor_job,
        args=[app],
        trigger='cron',
        hour=12,
        minute=0
    )

    # 5. 注册路由蓝图
    app.register_blueprint(device_bp)

    # -------------------------------------------------
    # 前端路由支持
    # -------------------------------------------------
    @app.route('/')
    def serve_index():
        if not os.path.exists(os.path.join(app.static_folder, 'index.html')):
            return "❌ 错误: 前端文件丢失 (web_dist/index.html)", 404
        return send_from_directory(app.static_folder, 'index.html')

    @app.route('/<path:path>')
    def serve_static(path):
        file_path = os.path.join(app.static_folder, path)
        if os.path.exists(file_path):
            return send_from_directory(app.static_folder, path)

        if path.startswith('api') or path.startswith('static'):
            return jsonify({'code': 404, 'message': 'Not Found'}), 404

        return send_from_directory(app.static_folder, 'index.html')

    with app.app_context():
        db.create_all()

    return app


if __name__ == '__main__':
    app = create_app()
    debug_mode = not getattr(sys, 'frozen', False)
    print("🚀 服务启动中...")
    # 注意：use_reloader=False 防止定时任务执行两次
    app.run(host='0.0.0.0', port=5000, debug=debug_mode, use_reloader=False)