package rpcclient

import (
	"context"
	"fmt"

	"google.golang.org/grpc"

	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/config"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/discoveryregistry"
	"github.com/OpenIMSDK/Open-IM-Server/pkg/errs"
	pbConversation "github.com/OpenIMSDK/Open-IM-Server/pkg/proto/conversation"
)

type Conversation struct {
	Client pbConversation.ConversationClient
	conn   grpc.ClientConnInterface
	discov discoveryregistry.SvcDiscoveryRegistry
}

func NewConversation(discov discoveryregistry.SvcDiscoveryRegistry) *Conversation {
	conn, err := discov.GetConn(context.Background(), config.Config.RpcRegisterName.OpenImConversationName)
	if err != nil {
		panic(err)
	}
	client := pbConversation.NewConversationClient(conn)
	return &Conversation{discov: discov, conn: conn, Client: client}
}

type ConversationRpcClient Conversation

func NewConversationRpcClient(discov discoveryregistry.SvcDiscoveryRegistry) ConversationRpcClient {
	return ConversationRpcClient(*NewConversation(discov))
}

func (c *ConversationRpcClient) GetSingleConversationRecvMsgOpt(
	ctx context.Context,
	userID, conversationID string,
) (int32, error) {
	var req pbConversation.GetConversationReq
	req.OwnerUserID = userID
	req.ConversationID = conversationID
	conversation, err := c.Client.GetConversation(ctx, &req)
	if err != nil {
		return 0, err
	}
	return conversation.GetConversation().RecvMsgOpt, err
}

func (c *ConversationRpcClient) SingleChatFirstCreateConversation(ctx context.Context, recvID, sendID string) error {
	_, err := c.Client.CreateSingleChatConversations(
		ctx,
		&pbConversation.CreateSingleChatConversationsReq{RecvID: recvID, SendID: sendID},
	)
	return err
}

func (c *ConversationRpcClient) GroupChatFirstCreateConversation(
	ctx context.Context,
	groupID string,
	userIDs []string,
) error {
	_, err := c.Client.CreateGroupChatConversations(
		ctx,
		&pbConversation.CreateGroupChatConversationsReq{UserIDs: userIDs, GroupID: groupID},
	)
	return err
}

func (c *ConversationRpcClient) SetConversationMaxSeq(
	ctx context.Context,
	ownerUserIDs []string,
	conversationID string,
	maxSeq int64,
) error {
	_, err := c.Client.SetConversationMaxSeq(
		ctx,
		&pbConversation.SetConversationMaxSeqReq{
			OwnerUserID:    ownerUserIDs,
			ConversationID: conversationID,
			MaxSeq:         maxSeq,
		},
	)
	return err
}

func (c *ConversationRpcClient) SetConversations(
	ctx context.Context,
	userIDs []string,
	conversation *pbConversation.ConversationReq,
) error {
	_, err := c.Client.SetConversations(
		ctx,
		&pbConversation.SetConversationsReq{UserIDs: userIDs, Conversation: conversation},
	)
	return err
}

func (c *ConversationRpcClient) GetConversationIDs(ctx context.Context, ownerUserID string) ([]string, error) {
	resp, err := c.Client.GetConversationIDs(ctx, &pbConversation.GetConversationIDsReq{UserID: ownerUserID})
	if err != nil {
		return nil, err
	}
	return resp.ConversationIDs, nil
}

func (c *ConversationRpcClient) GetConversation(
	ctx context.Context,
	ownerUserID, conversationID string,
) (*pbConversation.Conversation, error) {
	resp, err := c.Client.GetConversation(
		ctx,
		&pbConversation.GetConversationReq{OwnerUserID: ownerUserID, ConversationID: conversationID},
	)
	if err != nil {
		return nil, err
	}
	return resp.Conversation, nil
}

func (c *ConversationRpcClient) GetConversationsByConversationID(
	ctx context.Context,
	conversationIDs []string,
) ([]*pbConversation.Conversation, error) {
	resp, err := c.Client.GetConversationsByConversationID(
		ctx,
		&pbConversation.GetConversationsByConversationIDReq{ConversationIDs: conversationIDs},
	)
	if err != nil {
		return nil, err
	}
	if len(resp.Conversations) == 0 {
		return nil, errs.ErrRecordNotFound.Wrap(fmt.Sprintf("conversationIDs: %v not found", conversationIDs))
	}
	return resp.Conversations, nil
}

func (c *ConversationRpcClient) GetConversations(
	ctx context.Context,
	ownerUserID string,
	conversationIDs []string,
) ([]*pbConversation.Conversation, error) {
	resp, err := c.Client.GetConversations(
		ctx,
		&pbConversation.GetConversationsReq{OwnerUserID: ownerUserID, ConversationIDs: conversationIDs},
	)
	if err != nil {
		return nil, err
	}
	return resp.Conversations, nil
}