feat: 添加通知微服务，支持站内通知已读状态

app/notification/rpc/internal/logic/searchNotificationsLogic.go

@@ -0,0 +1,72 @@
+package logic
+
+import (
+	"context"
+	"errors"
+
+	"juwan-backend/app/notification/rpc/internal/models/notifications"
+	"juwan-backend/app/notification/rpc/internal/svc"
+	"juwan-backend/app/notification/rpc/pb"
+
+	"entgo.io/ent/dialect/sql"
+	"github.com/zeromicro/go-zero/core/logx"
+)
+
+type SearchNotificationsLogic struct {
+	ctx    context.Context
+	svcCtx *svc.ServiceContext
+	logx.Logger
+}
+
+func NewSearchNotificationsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *SearchNotificationsLogic {
+	return &SearchNotificationsLogic{
+		ctx:    ctx,
+		svcCtx: svcCtx,
+		Logger: logx.WithContext(ctx),
+	}
+}
+
+func (l *SearchNotificationsLogic) SearchNotifications(in *pb.SearchNotificationsReq) (*pb.SearchNotificationsResp, error) {
+	limit := in.GetLimit()
+	if limit <= 0 {
+		limit = 20
+	}
+	if limit > 100 {
+		return nil, errors.New("limit too large")
+	}
+	offset := in.GetOffset()
+	if offset < 0 {
+		offset = 0
+	}
+
+	query := l.svcCtx.NotificationModelRO.Notifications.Query()
+	if in.Id != nil {
+		query = query.Where(notifications.IDEQ(in.GetId()))
+	}
+	if in.UserId != nil {
+		query = query.Where(notifications.UserIDEQ(in.GetUserId()))
+	}
+	if in.Type != nil {
+		query = query.Where(notifications.TypeEQ(in.GetType()))
+	}
+	if in.Read != nil {
+		query = query.Where(notifications.ReadEQ(in.GetRead()))
+	}
+
+	list, err := query.
+		Order(notifications.ByCreatedAt(sql.OrderDesc()), notifications.ByID(sql.OrderDesc())).
+		Offset(int(offset)).
+		Limit(int(limit)).
+		All(l.ctx)
+	if err != nil {
+		logx.Errorf("searchNotifications err: %v", err)
+		return nil, errors.New("search notifications failed")
+	}
+
+	out := make([]*pb.Notifications, len(list))
+	for i, n := range list {
+		out[i] = entNotificationToPb(n)
+	}
+
+	return &pb.SearchNotificationsResp{Notifications: out}, nil
+}