list all users method

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 {