package ws

import (
	"sync"

	"github.com/go-admin-team/go-admin-core/logger"
)

// Manager 所有 websocket 信息
type Manager struct {
	Group                   map[string]map[string]*Client
	groupCount, clientCount uint
	Lock                    sync.Mutex
	Register, UnRegister    chan *Client
	Message                 chan *MessageData
	MessageString           chan *MessageDataString
	GroupMessage            chan *GroupMessageData
	BroadCastMessage        chan *BroadCastMessageData
}

// Start 启动 websocket 管理器
func (manager *Manager) Start() {
	for {
		select {
		// 注册
		case client := <-manager.Register:
			logger.Debugf("client [%s] connect", client.ID)
			logger.Debugf("register client [%s] to group [%s]", client.ID, client.Group)

			manager.Lock.Lock()
			if manager.Group[client.Group] == nil {
				manager.Group[client.Group] = make(map[string]*Client)
				manager.groupCount += 1
			}
			manager.Group[client.Group][client.ID] = client
			manager.clientCount += 1
			manager.Lock.Unlock()

		// 注销
		case client := <-manager.UnRegister:
			logger.Infof("unregister client [%s] from group [%s]", client.ID, client.Group)
			manager.Lock.Lock()
			if _, ok := manager.Group[client.Group]; ok {
				if _, ok := manager.Group[client.Group][client.ID]; ok {
					close(client.Message)
					delete(manager.Group[client.Group], client.ID)
					manager.clientCount -= 1
					if len(manager.Group[client.Group]) == 0 {
						//log.Printf("delete empty group [%s]", client.Group)
						delete(manager.Group, client.Group)
						manager.groupCount -= 1
					}
				}
			}
			manager.Lock.Unlock()

			// 发送广播数据到某个组的 channel 变量 Send 中
			//case data := <-manager.boardCast:
			//	if groupMap, ok := manager.wsGroup[data.GroupId]; ok {
			//		for _, conn := range groupMap {
			//			conn.Send <- data.Data
			//		}
			//	}
		}
	}
}

// SendService 处理单个 client 发送数据
func (manager *Manager) SendService() {
	for {
		select {
		case data := <-manager.Message:
			if groupMap, ok := manager.Group[data.Group]; ok {
				if conn, ok := groupMap[data.ID]; ok {
					conn.Message <- data.Message
				}
			}
		}
	}
}

// SendGroupService 处理 group 广播数据
func (manager *Manager) SendGroupService() {
	for {
		select {
		// 发送广播数据到某个组的 channel 变量 Send 中
		case data := <-manager.GroupMessage:
			if groupMap, ok := manager.Group[data.Group]; ok {
				for _, conn := range groupMap {
					conn.Message <- data.Message
				}
			}
		}
	}
}

// SendAllService 处理广播数据
func (manager *Manager) SendAllService() {
	for {
		select {
		case data := <-manager.BroadCastMessage:
			for _, v := range manager.Group {
				for _, conn := range v {
					conn.Message <- data.Message
				}
			}
		}
	}
}

// Send 向指定的 client 发送数据
func (manager *Manager) Send(id string, group string, message []byte) {
	data := &MessageData{
		ID:      id,
		Group:   group,
		Message: message,
	}
	manager.Message <- data
}

// SendString 向指定的 client 发送数据
func (manager *Manager) SendString(id string, group string, message string) {
	data := &MessageDataString{
		ID:      id,
		Group:   group,
		Message: message,
	}
	manager.MessageString <- data
}

// SendGroup 向指定的 Group 广播
func (manager *Manager) SendGroup(group string, message []byte) {
	data := &GroupMessageData{
		Group:   group,
		Message: message,
	}
	manager.GroupMessage <- data
}

// SendAll 广播
func (manager *Manager) SendAll(message []byte) {
	data := &BroadCastMessageData{
		Message: message,
	}
	manager.BroadCastMessage <- data
}

// RegisterClient 注册
func (manager *Manager) RegisterClient(client *Client) {
	manager.Register <- client
}

// UnRegisterClient 注销
func (manager *Manager) UnRegisterClient(client *Client) {
	manager.UnRegister <- client
}

// LenGroup 当前组个数
func (manager *Manager) LenGroup() uint {
	return manager.groupCount
}

// LenClient 当前连接个数
func (manager *Manager) LenClient() uint {
	return manager.clientCount
}

// Info 获取 wsManager 管理器信息
func (manager *Manager) Info() map[string]interface{} {
	managerInfo := make(map[string]interface{})
	managerInfo["groupLen"] = manager.LenGroup()
	managerInfo["clientLen"] = manager.LenClient()
	managerInfo["chanRegisterLen"] = len(manager.Register)
	managerInfo["chanUnregisterLen"] = len(manager.UnRegister)
	managerInfo["chanMessageLen"] = len(manager.Message)
	managerInfo["chanGroupMessageLen"] = len(manager.GroupMessage)
	managerInfo["chanBroadCastMessageLen"] = len(manager.BroadCastMessage)
	return managerInfo
}