// Copyright © 2023 OpenIM. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package api

import (
	"github.com/gin-gonic/gin"
	"github.com/go-playground/validator/v10"
	"github.com/mitchellh/mapstructure"
	"google.golang.org/protobuf/proto"

	"github.com/OpenIMSDK/Open-IM-Server/pkg/a2r"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/apiresp"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/apistruct"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/constant"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/log"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/tokenverify"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/errs"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/proto/msg"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/proto/sdkws"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/rpcclient"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/utils"
)

type MessageApi struct {
	*rpcclient.Message
	validate      *validator.Validate
	userRpcClient *rpcclient.UserRpcClient
}

func NewMessageApi(msgRpcClient *rpcclient.Message, userRpcClient *rpcclient.User) MessageApi {
	return MessageApi{Message: msgRpcClient, validate: validator.New(), userRpcClient: rpcclient.NewUserRpcClientByUser(userRpcClient)}
}

func (MessageApi) SetOptions(options map[string]bool, value bool) {
	utils.SetSwitchFromOptions(options, constant.IsHistory, value)
	utils.SetSwitchFromOptions(options, constant.IsPersistent, value)
	utils.SetSwitchFromOptions(options, constant.IsSenderSync, value)
	utils.SetSwitchFromOptions(options, constant.IsConversationUpdate, value)
}

func (m MessageApi) newUserSendMsgReq(c *gin.Context, params *apistruct.SendMsg) *msg.SendMsgReq {
	var newContent string
	var err error
	options := make(map[string]bool, 5)
	switch params.ContentType {
	case constant.Text:
		newContent = params.Content["text"].(string)
	case constant.Picture:
		fallthrough
	case constant.Custom:
		fallthrough
	case constant.Voice:
		fallthrough
	case constant.Video:
		fallthrough
	case constant.File:
		fallthrough
	case constant.CustomNotTriggerConversation:
		fallthrough
	case constant.CustomOnlineOnly:
		fallthrough
	default:
		newContent = utils.StructToJsonString(params.Content)
	}
	if params.IsOnlineOnly {
		m.SetOptions(options, false)
	}
	if params.NotOfflinePush {
		utils.SetSwitchFromOptions(options, constant.IsOfflinePush, false)
	}
	if params.ContentType == constant.CustomOnlineOnly {
		m.SetOptions(options, false)
	} else if params.ContentType == constant.CustomNotTriggerConversation {
		utils.SetSwitchFromOptions(options, constant.IsConversationUpdate, false)
	}
	pbData := msg.SendMsgReq{
		MsgData: &sdkws.MsgData{
			SendID:           params.SendID,
			GroupID:          params.GroupID,
			ClientMsgID:      utils.GetMsgID(params.SendID),
			SenderPlatformID: params.SenderPlatformID,
			SenderNickname:   params.SenderNickname,
			SenderFaceURL:    params.SenderFaceURL,
			SessionType:      params.SessionType,
			MsgFrom:          constant.SysMsgType,
			ContentType:      params.ContentType,
			Content:          []byte(newContent),
			CreateTime:       utils.GetCurrentTimestampByMill(),
			Options:          options,
			OfflinePushInfo:  params.OfflinePushInfo,
		},
	}
	if params.ContentType == constant.OANotification {
		var tips sdkws.TipsComm
		tips.JsonDetail = utils.StructToJsonString(params.Content)
		pbData.MsgData.Content, err = proto.Marshal(&tips)
		if err != nil {
			log.ZError(c, "Marshal failed ", err, "tips", tips.String())
		}
	}
	return &pbData
}

func (m *MessageApi) GetSeq(c *gin.Context) {
	a2r.Call(msg.MsgClient.GetMaxSeq, m.Client, c)
}

func (m *MessageApi) PullMsgBySeqs(c *gin.Context) {
	a2r.Call(msg.MsgClient.PullMessageBySeqs, m.Client, c)
}

func (m *MessageApi) RevokeMsg(c *gin.Context) {
	a2r.Call(msg.MsgClient.RevokeMsg, m.Client, c)
}

func (m *MessageApi) MarkMsgsAsRead(c *gin.Context) {
	a2r.Call(msg.MsgClient.MarkMsgsAsRead, m.Client, c)
}

func (m *MessageApi) MarkConversationAsRead(c *gin.Context) {
	a2r.Call(msg.MsgClient.MarkConversationAsRead, m.Client, c)
}

func (m *MessageApi) GetConversationsHasReadAndMaxSeq(c *gin.Context) {
	a2r.Call(msg.MsgClient.GetConversationsHasReadAndMaxSeq, m.Client, c)
}

func (m *MessageApi) SetConversationHasReadSeq(c *gin.Context) {
	a2r.Call(msg.MsgClient.SetConversationHasReadSeq, m.Client, c)
}

func (m *MessageApi) ClearConversationsMsg(c *gin.Context) {
	a2r.Call(msg.MsgClient.ClearConversationsMsg, m.Client, c)
}

func (m *MessageApi) UserClearAllMsg(c *gin.Context) {
	a2r.Call(msg.MsgClient.UserClearAllMsg, m.Client, c)
}

func (m *MessageApi) DeleteMsgs(c *gin.Context) {
	a2r.Call(msg.MsgClient.DeleteMsgs, m.Client, c)
}

func (m *MessageApi) DeleteMsgPhysicalBySeq(c *gin.Context) {
	a2r.Call(msg.MsgClient.DeleteMsgPhysicalBySeq, m.Client, c)
}

func (m *MessageApi) DeleteMsgPhysical(c *gin.Context) {
	a2r.Call(msg.MsgClient.DeleteMsgPhysical, m.Client, c)
}

func (m *MessageApi) getSendMsgReq(c *gin.Context, req apistruct.SendMsg) (sendMsgReq *msg.SendMsgReq, err error) {
	var data interface{}
	switch req.ContentType {
	case constant.Text:
		data = apistruct.TextElem{}
	case constant.Picture:
		data = apistruct.PictureElem{}
	case constant.Voice:
		data = apistruct.SoundElem{}
	case constant.Video:
		data = apistruct.VideoElem{}
	case constant.File:
		data = apistruct.FileElem{}
	case constant.Custom:
		data = apistruct.CustomElem{}
	case constant.Revoke:
		data = apistruct.RevokeElem{}
	case constant.OANotification:
		data = apistruct.OANotificationElem{}
		req.SessionType = constant.NotificationChatType
	case constant.CustomNotTriggerConversation:
		data = apistruct.CustomElem{}
	case constant.CustomOnlineOnly:
		data = apistruct.CustomElem{}
	default:
		return nil, errs.ErrArgs.WithDetail("not support err contentType")
	}
	if err := mapstructure.WeakDecode(req.Content, &data); err != nil {
		return nil, err
	}
	log.ZDebug(c, "getSendMsgReq", "data", data)
	if err := m.validate.Struct(data); err != nil {
		return nil, err
	}
	return m.newUserSendMsgReq(c, &req), nil
}

func (m *MessageApi) SendMessage(c *gin.Context) {
	req := apistruct.SendMsgReq{}
	if err := c.BindJSON(&req); err != nil {
		apiresp.GinError(c, errs.ErrArgs.WithDetail(err.Error()).Wrap())
		return
	}
	log.ZInfo(c, "SendMessage", "req", req)
	if !tokenverify.IsAppManagerUid(c) {
		apiresp.GinError(c, errs.ErrNoPermission.Wrap("only app manager can send message"))
		return
	}

	sendMsgReq, err := m.getSendMsgReq(c, req.SendMsg)
	if err != nil {
		log.ZError(c, "decodeData failed", err)
		apiresp.GinError(c, err)
		return
	}
	sendMsgReq.MsgData.RecvID = req.RecvID
	var status int
	respPb, err := m.Client.SendMsg(c, sendMsgReq)
	if err != nil {
		status = constant.MsgSendFailed
		apiresp.GinError(c, err)
		return
	}
	status = constant.MsgSendSuccessed
	_, err = m.Client.SetSendMsgStatus(c, &msg.SetSendMsgStatusReq{
		Status: int32(status),
	})
	if err != nil {
		log.ZError(c, "SetSendMsgStatus failed", err)
	}
	apiresp.GinSuccess(c, respPb)
}

func (m *MessageApi) BatchSendMsg(c *gin.Context) {
	var (
		req  apistruct.BatchSendMsgReq
		resp apistruct.BatchSendMsgResp
	)
	if err := c.BindJSON(&req); err != nil {
		log.ZError(c, "BatchSendMsg BindJSON failed", err)
		apiresp.GinError(c, errs.ErrArgs.WithDetail(err.Error()).Wrap())
		return
	}
	log.ZInfo(c, "BatchSendMsg", "req", req)
	if err := tokenverify.CheckAdmin(c); err != nil {
		apiresp.GinError(c, errs.ErrNoPermission.Wrap("only app manager can send message"))
		return
	}


	var recvIDs []string
	var err error
	if req.IsSendAll {
		pageNumber := 1
		showNumber := 500
		for {
			recvIDsPart, err := m.userRpcClient.GetAllUserIDs(c, int32(pageNumber), int32(showNumber))
			if err != nil {
				log.ZError(c, "GetAllUserIDs failed", err)
				apiresp.GinError(c, err)
				return
			}
			if len(recvIDsPart) < showNumber {
				recvIDs = append(recvIDs, recvIDsPart...)
				break
			}
			pageNumber++
		}
	} else {
		recvIDs = req.RecvIDs
	}
	log.ZDebug(c, "BatchSendMsg nums", "nums ", len(recvIDs))
	sendMsgReq, err := m.getSendMsgReq(c, req.SendMsg)
	if err != nil {
		log.ZError(c, "decodeData failed", err)
		apiresp.GinError(c, err)
		return
	}
	for _, recvID := range recvIDs {
		sendMsgReq.MsgData.RecvID = recvID
		rpcResp, err := m.Client.SendMsg(c, sendMsgReq)
		if err != nil {
			resp.FailedIDs = append(resp.FailedIDs, recvID)
			continue
		}
		resp.Results = append(resp.Results, &apistruct.SingleReturnResult{
			ServerMsgID: rpcResp.ServerMsgID,
			ClientMsgID: rpcResp.ClientMsgID,
			SendTime:    rpcResp.SendTime,
			RecvID:      recvID,
		})
	}
	apiresp.GinSuccess(c, resp)
}

func (m *MessageApi) CheckMsgIsSendSuccess(c *gin.Context) {
	a2r.Call(msg.MsgClient.GetSendMsgStatus, m.Client, c)
}

func (m *MessageApi) GetUsersOnlineStatus(c *gin.Context) {
	a2r.Call(msg.MsgClient.GetSendMsgStatus, m.Client, c)
}

func (m *MessageApi) GetActiveUser(c *gin.Context) {
	a2r.Call(msg.MsgClient.GetActiveUser, m.Client, c)
}

func (m *MessageApi) GetActiveGroup(c *gin.Context) {
	a2r.Call(msg.MsgClient.GetActiveGroup, m.Client, c)
}

func (m *MessageApi) SearchMsg(c *gin.Context) {
	a2r.Call(msg.MsgClient.SearchMessage, m.Client, c)
}