add: chat service

app/chat/rpc/internal/logic/addChatSessionsLogic.go

@@ -0,0 +1,64 @@
+package logic
+
+import (
+	"context"
+	"errors"
+
+	"juwan-backend/app/chat/rpc/internal/svc"
+	"juwan-backend/app/chat/rpc/pb"
+
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type AddChatSessionsLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewAddChatSessionsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *AddChatSessionsLogic {
+	return &AddChatSessionsLogic{
+		ctx:    ctx,
+		svcCtx: svcCtx,
+		Logger: logx.WithContext(ctx),
+	}
+}
+
+func (l *AddChatSessionsLogic) AddChatSessions(in *pb.AddChatSessionsReq) (*pb.AddChatSessionsResp, error) {
+	if in.GetType() == "" {
+		return nil, errors.New("type is required")
+	}
+	if in.GetCreatorId() <= 0 {
+		return nil, errors.New("creatorId is required")
+	}
+
+	store := l.svcCtx.Store
+	store.Mu.Lock()
+	defer store.Mu.Unlock()
+
+	now := nowUnix(0)
+	participants := append([]int64(nil), in.GetParticipants()...)
+	hasCreator := false
+	for _, p := range participants {
+		if p == in.GetCreatorId() {
+			hasCreator = true
+			break
+		}
+	}
+	if !hasCreator {
+		participants = append(participants, in.GetCreatorId())
+	}
+
+	session := &pb.ChatSessions{
+		Id:           store.NextSession(),
+		Type:         in.GetType(),
+		Name:         in.GetName(),
+		CreatorId:    in.GetCreatorId(),
+		Participants: participants,
+		CreatedAt:    now,
+		UpdatedAt:    now,
+	}
+	store.Sessions[session.Id] = session
+
+	return &pb.AddChatSessionsResp{Id: session.Id}, nil
+}