package service

import (
	"errors"
	"regexp"
	"strconv"
	"time"
	"videoplayer/dao"
	"videoplayer/proto"
	"videoplayer/worker"
)

func CreateUser(name, password, email, gender string, age int) uint {
	id := dao.CreateUser(name, password, email, gender, age)
	if id != 0 {
		//添加用户信息到同步列表
		err := setSyncUserDataSet("add", int(id))
		if err != nil {
			return id
		}
	}
	return id
}

func GetUser(name, email, password string) dao.User {
	emailRegex := `^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`
	re := regexp.MustCompile(emailRegex)
	var user dao.User
	if re.MatchString(name) {
		user = dao.FindUserByEmail(name)
	} else {
		user = dao.FindUserByName(name)
	}
	if user.ID != 0 && user.Password == password {
		return user
	}
	return dao.User{}
}

func ContainsUser(name, email string) bool {
	user := dao.FindUserByName(name)
	user2 := dao.FindUserByEmail(email)
	if user.ID != 0 || user2.ID != 0 {
		return true
	}
	return false
}

func GetUserByID(id int) []proto.User {
	return dao.FindUserByID(id)
}

func GetUserByNameLike(name string) []proto.User {
	return dao.FindUserByNameLike(name)
}

func UpdateUser(user_id int, req proto.UpdateUserInfoReq) (int, error) {
	cur_user := dao.FindUserByID2(user_id)
	//fmt.Println("cur_user:", cur_user, "req:", req)
	if user_id == req.ID && cur_user.Role != "admin" {
		err := dao.UpdateUserByID3(user_id, req) //用户修改自己的信息，不能修改权限信息
		//添加修改用户信息到同步列表
		if err == nil {
			err2 := setSyncUserDataSet("update", user_id)
			if err2 != nil {
				return user_id, nil
			}
		}
		return user_id, err
	} else if cur_user.Role == "admin" {
		dao.UpdateUserByID2(req.ID, req)
		return req.ID, nil
	} else {
		return 0, nil
	}
}

func DeleteUserService(id, user_id int) int {
	res := 0
	if user_id == id {
		res = dao.DeleteUserByID(id)
	} else {
		user := dao.FindUserByID2(user_id)
		if user.Role == "admin" {
			res = dao.DeleteUserByID(id)
		}
	}
	if res != 0 {
		//添加删除用户信息到同步列表
		err := setSyncUserDataSet("delete", id)
		if err != nil {
			return res
		}
	}
	return res
}
func UserSyncDataFromMaster() {
	//从接口获取数据
	url := "https://" + proto.Config.MASTER_SERVER_DOMAIN + "/user/sync"
	tokens := worker.GetRedisSetMembers("super_permission_tokens")
	var req proto.SyncUserReq
	req.Token = tokens[0]
	req.Device = proto.Config.SERVER_NAME
	all := worker.GetRedis("user_sync_all")
	if all == "" || all == "1" {
		req.Types = 1
	} else {
		worker.SetRedis("user_sync_all", "2")
		req.Types = 2
	}

	user_sync_data := worker.SyncDataFromMasterReq2(url, req)
	add_users := user_sync_data.Add
	update_users := user_sync_data.Update
	delete_users := user_sync_data.Delete
	//未成功操作的id
	var fail_ids []uint

	//添加用户
	var add_confirm []proto.UserConfirmID
	for _, v := range add_users {
		res := dao.AddUserSync(v)
		if res == 0 {
			fail_ids = append(fail_ids, v.ID)
		} else {
			add_confirm = append(add_confirm, proto.UserConfirmID{ID: v.ID})
		}
	}
	//更新用户
	var update_confirm []proto.UserConfirmID
	for _, v := range update_users {
		res := dao.UpdateUserSync(v)
		if res == 0 {
			fail_ids = append(fail_ids, v.ID)
		} else {
			update_confirm = append(update_confirm, proto.UserConfirmID{ID: v.ID})
		}
	}
	//删除用户
	var delete_confirm []proto.UserConfirmID
	for _, v := range delete_users {
		res := dao.DeleteUserSync(v)
		if res == 0 {
			fail_ids = append(fail_ids, v.ID)
		} else {
			delete_confirm = append(delete_confirm, proto.UserConfirmID{ID: v.ID})
		}
	}

	//确认同步数据
	var data proto.UserSyncConfirm
	data.Add = add_confirm
	data.Update = update_confirm
	data.Delete = delete_confirm
	//确认同步数据请求
	var confirm_req proto.SyncUserReq
	confirm_req.Token = tokens[0]
	confirm_req.Device = proto.Config.SERVER_NAME
	confirm_req.Types = 3
	confirm_req.Confirm = data
	worker.SyncDataFromMasterReq2(url, confirm_req)
}

// 同步数据到主服务器-增删改数据
func GetUserSyncData(device string) dao.UserSyncResp {
	key := device + "_sync_user_ids"
	add_temp_key := device + "_sync_user_ids_add_confirm_temp"
	update_temp_key := device + "_sync_user_ids_update_confirm_temp"
	delete_temp_key := device + "_sync_user_ids_delete_confirm_temp"
	//需要获取暂存集合的并集，清空暂存集合，存入待确认集合
	add_user_ids := worker.GetRedisSetUnion(key+"_add", add_temp_key)
	update_user_ids := worker.GetRedisSetUnion(key+"_update", update_temp_key)
	delete_user_ids := worker.GetRedisSetUnion(key+"_delete", delete_temp_key)
	add_users := []dao.User{}
	update_users := []dao.User{}
	delete_users := []proto.UserDelID{}
	for _, v := range add_user_ids {
		id, _ := strconv.Atoi(v)
		user := dao.FindUserByUserID(id)
		add_users = append(add_users, user)
	}

	for _, v := range update_user_ids {
		id, _ := strconv.Atoi(v)
		user := dao.FindUserByUserID(id)
		update_users = append(update_users, user)
	}

	for _, v := range delete_user_ids {
		id, _ := strconv.Atoi(v)
		delete_users = append(delete_users, proto.UserDelID{ID: uint(id)})
	}
	//将id存入暂存集合，清空原集合，存入待确认集合主要保证在确认时，有新的数据加入不会在确认时漏掉
	worker.SetRedisSetUnionAndStore(add_temp_key, key+"_add")
	worker.ClearRedisSet(key + "_add")
	worker.SetRedisSetUnionAndStore(update_temp_key, key+"_update")
	worker.ClearRedisSet(key + "_update")
	worker.SetRedisSetUnionAndStore(delete_temp_key, key+"_delete")
	worker.ClearRedisSet(key + "_delete")
	return dao.UserSyncResp{Add: add_users, Update: update_users, Delete: delete_users}
}

func setSyncUserDataSet(t string, id int) error {
	devices := worker.GetRedisSetMembers("sync_devices_ids") //主服务器查看从服务器的设备列表
	var err error
	for _, device := range devices {
		key := device + "_sync_user_ids"
		if t == "add" {
			key_ := key + "_add"
			worker.SetRedisSetAdd(key_, strconv.Itoa(id))
		} else if t == "update" {
			key_ := key + "_update"
			worker.SetRedisSetAdd(key_, strconv.Itoa(id))
		} else if t == "delete" {
			key_ := key + "_delete"
			worker.SetRedisSetAdd(key_, strconv.Itoa(id))
		} else {
			err = errors.New("error")
		}
	}
	return err
}

// 确认同步数据
func ConfirmSyncUserData(device string, data proto.UserSyncConfirm) error {

	var ids_add []string
	var err error
	for _, v := range data.Add {
		ids_add = append(ids_add, strconv.Itoa(int(v.ID)))
	}
	add_key := device + "_sync_user_ids_add_confirm"
	isSuccess := worker.SetRedisSetAddBatchWithExpire(add_key, ids_add, time.Second*30)
	if !isSuccess {
		err = errors.New("set confirm error")
	}
	var ids_update []string
	for _, v := range data.Update {
		ids_update = append(ids_update, strconv.Itoa(int(v.ID)))
	}
	update_key := device + "_sync_user_ids_update_confirm"
	isSuccess = worker.SetRedisSetAddBatchWithExpire(update_key, ids_update, time.Second*30)
	if !isSuccess {
		err = errors.New("set confirm error")
	}

	var ids_delete []string
	for _, v := range data.Delete {
		ids_delete = append(ids_delete, strconv.Itoa(int(v.ID)))
	}
	del_key := device + "_sync_user_ids_delete_confirm"
	isSuccess = worker.SetRedisSetAddBatchWithExpire(del_key, ids_delete, time.Second*30)
	if !isSuccess {
		err = errors.New("set confirm error")
	}

	//待确认集合暂存
	ids_add_confirm_temp := device + "_sync_user_ids_add_confirm_temp"
	ids_update_confirm_temp := device + "_sync_user_ids_update_confirm_temp"
	ids_delete_confirm_temp := device + "_sync_user_ids_delete_confirm_temp"

	//取差集
	add_diff := worker.SetRedisSetDiffAndStore(ids_add_confirm_temp, add_key)
	update_diff := worker.SetRedisSetDiffAndStore(ids_update_confirm_temp, update_key)
	delete_diff := worker.SetRedisSetDiffAndStore(ids_delete_confirm_temp, del_key)
	if add_diff != true || update_diff != true || delete_diff != true {
		err = errors.New("confirm error")
	}
	return err
}