created tracker api endpoint and created UI interface for trackers

server/internal/dto/tracker.go

@@ -0,0 +1,44 @@
+package dto
+
+import "smoop-api/internal/models"
+
+type TrackerDto struct {
+	GUID  string    `json:"guid"`
+	Name  string    `json:"name"`
+	Users []UserDto `json:"users,omitempty"`
+}
+
+type TrackerListDto struct {
+	Trackers []TrackerDto `json:"trackers"`
+	Offset   int          `json:"offset"`
+	Limit    int          `json:"limit"`
+	Total    int64        `json:"total"`
+}
+
+type CreateTrackerDto struct {
+	GUID    string `json:"guid" binding:"required"`
+	Name    string `json:"name" binding:"required"`
+	UserIDs []uint `json:"userIds"`
+}
+
+type RenameTrackerDto struct {
+	Name string `json:"name" binding:"required"`
+}
+
+type SetTrackerUsersDto struct {
+	UserIDs []uint `json:"userIds"`
+}
+
+func MapTracker(t models.Tracker) TrackerDto {
+	out := TrackerDto{
+		GUID: t.GUID,
+		Name: t.Name,
+	}
+	if len(t.Users) > 0 {
+		out.Users = make([]UserDto, 0, len(t.Users))
+		for _, u := range t.Users {
+			out.Users = append(out.Users, MapUser(u))
+		}
+	}
+	return out
+}