import asyncio
import threading
from concurrent.futures import ThreadPoolExecutor

from flask import Blueprint, render_template, jsonify, request, current_app, session
from .auth import login_required
from loguru import logger
import json
import uuid
from datetime import datetime

# 创建消息推送管理蓝图
message_push_bp = Blueprint('message_push', __name__, url_prefix='/message_push')

# 创建线程池
message_thread_pool = ThreadPoolExecutor(max_workers=10, thread_name_prefix="message_sender_")

# 创建共享的事件循环
shared_loop = None
loop_lock = threading.Lock()


def get_or_create_loop():
    """获取或创建共享的事件循环"""
    global shared_loop
    with loop_lock:
        if shared_loop is None:
            shared_loop = asyncio.new_event_loop()

            # 在新线程中运行事件循环
            def run_loop():
                asyncio.set_event_loop(shared_loop)
                shared_loop.run_forever()

            loop_thread = threading.Thread(target=run_loop, daemon=True)
            loop_thread.start()
        return shared_loop


def send_message_in_thread(func, *args, **kwargs):
    """使用共享事件循环发送消息"""

    def run():
        try:
            loop = get_or_create_loop()

            # 创建异步任务
            async def send():
                try:
                    await func(*args, **kwargs)
                except Exception as e:
                    logger.error(f"发送消息失败: {e}")

            # 在共享事件循环中运行任务
            future = asyncio.run_coroutine_threadsafe(send(), loop)
            # 等待任务完成，设置超时时间
            future.result(timeout=10)
        except Exception as e:
            logger.error(f"消息发送任务执行失败: {e}")

    # 使用线程池提交任务
    message_thread_pool.submit(run)


# 消息推送管理页面
@message_push_bp.route('/')
@login_required
def message_push_management():
    """消息推送管理页面"""
    return render_template('message_push_management.html')


# API路由
@message_push_bp.route('/api/tasks', methods=['GET'])
@login_required
def api_tasks_list():
    """获取任务列表API"""
    try:
        # 获取查询参数
        status = request.args.get('status')
        start_time = request.args.get('start_time')
        end_time = request.args.get('end_time')
        page = int(request.args.get('page', 1))
        limit = int(request.args.get('limit', 20))

        # 获取任务列表
        db = current_app.dashboard_server.task_db
        tasks, total = db.get_tasks_list(status, start_time, end_time, page, limit)

        return jsonify({
            "success": True,
            "data": {
                "tasks": tasks,
                "total": total,
                "page": page,
                "limit": limit
            }
        })
    except Exception as e:
        logger.error(f"获取任务列表失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500


@message_push_bp.route('/api/tasks', methods=['POST'])
@login_required
def api_create_task():
    """创建任务API"""
    try:
        data = request.json
        if not data:
            return jsonify({"success": False, "error": "无效的请求数据"}), 400

        # 获取用户名
        username = session.get('username')
        if not username:
            return jsonify({"success": False, "error": "未登录或会话已过期"}), 401

        # 生成任务ID
        data['task_id'] = str(uuid.uuid4())
        data['creator_id'] = username

        # 创建任务
        db = current_app.dashboard_server.task_db
        task = db.create_task(data)
        if not task:
            return jsonify({"success": False, "error": "创建任务失败"}), 500

        return jsonify({
            "success": True,
            "data": {
                "task": task
            }
        })
    except Exception as e:
        logger.error(f"创建任务失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500


@message_push_bp.route('/api/tasks/<task_id>', methods=['PUT'])
@login_required
def api_update_task(task_id):
    """更新任务API"""
    try:
        data = request.json
        if not data:
            return jsonify({"success": False, "error": "无效的请求数据"}), 400

        # 获取任务
        db = current_app.dashboard_server.task_db
        task = db.get_task(task_id)
        if not task:
            return jsonify({"success": False, "error": "任务不存在"}), 404

        # 更新任务
        if not db.update_task(task_id, data):
            return jsonify({"success": False, "error": "更新任务失败"}), 500

        # 获取更新后的任务
        updated_task = db.get_task(task_id)
        return jsonify({
            "success": True,
            "data": {
                "task": updated_task
            }
        })
    except Exception as e:
        logger.error(f"更新任务失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500


@message_push_bp.route('/api/tasks/<task_id>', methods=['DELETE'])
@login_required
def api_delete_task(task_id):
    """删除任务API"""
    try:
        # 获取任务
        db = current_app.dashboard_server.task_db
        task = db.get_task(task_id)
        if not task:
            return jsonify({"success": False, "error": "任务不存在"}), 404

        # 删除任务
        if not db.delete_task(task_id):
            return jsonify({"success": False, "error": "删除任务失败"}), 500

        return jsonify({
            "success": True,
            "message": "任务已删除"
        })
    except Exception as e:
        logger.error(f"删除任务失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500


@message_push_bp.route('/api/tasks/<task_id>/pause', methods=['POST'])
@login_required
def api_pause_task(task_id):
    """暂停任务API"""
    try:
        # 获取任务
        db = current_app.dashboard_server.task_db
        task = db.get_task(task_id)
        if not task:
            return jsonify({"success": False, "error": "任务不存在"}), 404

        # 暂停任务
        if not db.update_task(task_id, {'status': 'paused'}):
            return jsonify({"success": False, "error": "暂停任务失败"}), 500

        return jsonify({
            "success": True,
            "message": "任务已暂停"
        })
    except Exception as e:
        logger.error(f"暂停任务失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500


@message_push_bp.route('/api/tasks/<task_id>/resume', methods=['POST'])
@login_required
def api_resume_task(task_id):
    """恢复任务API"""
    try:
        # 获取任务
        db = current_app.dashboard_server.task_db
        task = db.get_task(task_id)
        if not task:
            return jsonify({"success": False, "error": "任务不存在"}), 404

        # 恢复任务
        if not db.update_task(task_id, {'status': 'scheduled'}):
            return jsonify({"success": False, "error": "恢复任务失败"}), 500

        return jsonify({
            "success": True,
            "message": "任务已恢复"
        })
    except Exception as e:
        logger.error(f"恢复任务失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500


@message_push_bp.route('/api/tasks/<task_id>/preview', methods=['POST'])
@login_required
def api_preview_task(task_id):
    """预览任务API"""
    try:
        # 获取任务
        db = current_app.dashboard_server.task_db
        task = db.get_task(task_id)
        if not task:
            return jsonify({"success": False, "error": "任务不存在"}), 404

        # 获取机器人实例
        server = current_app.dashboard_server
        if not server or not server.client:
            return jsonify({"success": False, "error": "机器人未初始化"}), 500
        # 获取用户名
        preview_user = session.get('username')
        if not preview_user:
            return jsonify({"success": False, "error": "未登录或会话已过期"}), 401
            
        # 获取预览接收者列表
        preview_recipients = task.get("preview_recipients", [])
        if not preview_recipients:
            return jsonify({"success": False, "error": "未设置预览接收者"}), 400
            
        # 为每个接收者发送预览消息
        for recipient in preview_recipients:
            # 发送文本消息
            if task.get('content_text'):
                send_message_in_thread(server.client.send_text_message, recipient, task['content_text'])
                
            # 发送图片消息
            if task.get('content_image'):
                send_message_in_thread(server.client.send_image_message, recipient, task['content_image'])
                
            # 发送链接消息
            if task.get('content_link'):
                send_message_in_thread(server.client.send_link_message, recipient, task['content_link'])
                
            # # 发送小程序消息
            # if task.get('content_miniprogram'):
            #     miniprogram = task['content_miniprogram']
            #     send_message_in_thread(
            #         server.client.send_miniprogram_message,
            #         recipient,
            #         miniprogram.get('title'),
            #         miniprogram.get('appid'),
            #         miniprogram.get('pagepath'),
            #         miniprogram.get('thumb_url')
            #     )

        return jsonify({
            "success": True,
            "message": "预览已发送"
        })
    except Exception as e:
        logger.error(f"发送预览失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500


@message_push_bp.route('/api/tasks/<task_id>/logs', methods=['GET'])
@login_required
def api_task_logs(task_id):
    """获取任务日志API"""
    try:
        # 获取查询参数
        page = int(request.args.get('page', 1))
        limit = int(request.args.get('limit', 20))

        # 查询日志
        db = current_app.dashboard_server.task_db
        logs_data = db.get_task_logs_with_pagination(task_id, page, limit)

        return jsonify({
            "success": True,
            "data": logs_data
        })
    except Exception as e:
        logger.error(f"获取任务日志失败: {e}")
        return jsonify({"success": False, "error": str(e)}), 500