list all users method

api/api.go

@@ -48,6 +48,7 @@ func Start() {
 	})
 
 	r.Route("/users", func(r chi.Router) {
+		r.Get("/", ListUsers)
 		r.Route("/{userID}", func(r chi.Router) {
 			r.Use(UserCtx) // Load user
 			r.Get("/", GetUser)

api/db.go

@@ -27,6 +27,27 @@ func dbGetUser(id string) (*User, error) {
 	return nil, errors.New("User not found")
 }
 
+func dbGetAllUsers() ([]*User, error) {
+	data := db.ExecDB("users")
+	if data == nil {
+		return nil, errors.New("failed to load users database")
+	}
+
+	users := data["users"].([]interface{})
+	var result []*User
+	for _, u := range users {
+		user := u.(map[string]interface{})
+		result = append(result, &User{
+			ID:   user["ID"].(string),
+			Name: user["Name"].(string),
+		})
+	}
+	if len(result) == 0 {
+		return nil, errors.New("no users found")
+	}
+	return result, nil
+}
+
 func dbGetMessage(id string) (*Message, error) {
 	data := db.ExecDB("messages")
 	if data == nil {

api/response.go

@@ -30,6 +30,14 @@ func NewMessageListResponse(messages []*Message) []render.Renderer {
 	return list
 }
 
+func NewUserListResponse(users []*User) []render.Renderer {
+	list := []render.Renderer{}
+	for _, user := range users {
+		list = append(list, NewUserPayloadResponse(user))
+	}
+	return list
+}
+
 func NewUserPayloadResponse(user *User) *UserPayload {
 	return &UserPayload{User: user}
 }

api/user.go

@@ -43,6 +43,18 @@ func GetUser(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func ListUsers(w http.ResponseWriter, r *http.Request) {
+	dbUsers, err := dbGetAllUsers()
+	if err != nil {
+		render.Render(w, r, ErrRender(err))
+		return
+	}
+	if err := render.RenderList(w, r, NewUserListResponse(dbUsers)); err != nil {
+		render.Render(w, r, ErrRender(err))
+		return
+	}
+}
+
 func newUserID() string {
 	return "user_" + uuid.New().String()
 }