refactor naming in db, add user delete, update todo

http.go

@@ -31,7 +31,7 @@ func getUser(ctx context.Context, token string) (*User, error) {
 	user, err := CacheGetUserById(userId)
 	if err != nil {
 		user = &User{Id: userId}
-		err = DbSetUserById(ctx, user)
+		err = DbUserSetById(ctx, user)
 		if err != nil {
 			return nil, err
 		}
@@ -45,7 +45,7 @@ func getGroup(ctx context.Context, groupId uint32) (*Group, error) {
 	group, err := CacheGetGroup(groupId)
 	if err != nil {
 		group = &Group{Id: groupId}
-		err = DbSetGroupById(ctx, group)
+		err = DbGroupSetById(ctx, group)
 		if err != nil {
 			return nil, err
 		}
@@ -125,7 +125,7 @@ func HttpHandleNewUser(response http.ResponseWriter, request *http.Request) {
 
 	ctx := request.Context()
 
-	err = DbSaveUserWithoutGroups(ctx, newUser)
+	err = DbUserSaveWithoutGroups(ctx, newUser)
 	if err != nil {
 		http.Error(response, "name taken", http.StatusUnauthorized)
 		return
@@ -134,6 +134,24 @@ func HttpHandleNewUser(response http.ResponseWriter, request *http.Request) {
 	response.WriteHeader(http.StatusCreated)
 }
 
+func HttpHandleDeleteUser(response http.ResponseWriter, request *http.Request) {
+	ctx := request.Context()
+
+	userId, err := TokenValidateGetId(request.FormValue("token"))
+	if err != nil {
+		http.Error(response, "invalid token", http.StatusUnauthorized)
+		return
+	}
+
+	err = DbUserDelete(ctx, userId)
+	if err != nil {
+		http.Error(response, "internal server error", http.StatusInternalServerError)
+	}
+
+	CacheDeleteUser(userId)
+	response.WriteHeader(http.StatusAccepted)
+}
+
 func HttpHandleNewToken(response http.ResponseWriter, request *http.Request) {
 	if !isMethodAllowed(&response, request) {
 		return
@@ -162,7 +180,7 @@ func HttpHandleNewToken(response http.ResponseWriter, request *http.Request) {
 	if err != nil {
 		user = &User{Name: username}
 
-		err := DbSetUserByName(ctx, user)
+		err := DbUserSetByName(ctx, user)
 		if err != nil {
 			http.Error(response, "bad login1", http.StatusUnauthorized)
 			return
@@ -221,7 +239,7 @@ func HttpHandeGroupCreate(response http.ResponseWriter, request *http.Request) {
 		group.EnableUserColors = true
 	}
 
-	err = DbSaveGroupWithoutUsers(ctx, &group)
+	err = DbGroupSaveWithoutUsers(ctx, &group)
 	if err != nil {
 		http.Error(response, err.Error(), http.StatusInternalServerError)
 		return
@@ -241,7 +259,7 @@ func HttpHandleGroupRemove(response http.ResponseWriter, request *http.Request)
 		return
 	}
 
-	err = DbDeleteGroup(ctx, group)
+	err = DbGroupDelete(ctx, group)
 	if err != nil {
 		http.Error(response, "internal server error", http.StatusInternalServerError)
 		return
@@ -293,7 +311,7 @@ func HttpHandleGroupAddUser(response http.ResponseWriter, request *http.Request)
 		return
 	}
 
-	err = DbAddUsersToGroup(ctx, group.Id, &ids)
+	err = DbGroupAddUsers(ctx, group.Id, &ids)
 	if err != nil {
 		http.Error(response, "internal server error", http.StatusInternalServerError)
 		return
@@ -340,7 +358,7 @@ func HttpHandleGroupRemoveUser(response http.ResponseWriter, request *http.Reque
 		return
 	}
 
-	count, err := DbRemoveUsersFromGroup(ctx, group.Id, &ids)
+	count, err := DbGroupRemoveUsers(ctx, group.Id, &ids)
 	if err != nil {
 		http.Error(response, "internal server error", http.StatusInternalServerError)
 		return
@@ -372,7 +390,7 @@ func HttpHandleGroupChangeColor(response http.ResponseWriter, request *http.Requ
 	}
 
 	group.Color = color
-	err = DbSetGroupColor(ctx, group)
+	err = DbGroupSetColor(ctx, group)
 	if err != nil {
 		http.Error(response, "internal server error", http.StatusInternalServerError)
 		return
@@ -398,7 +416,7 @@ func HttpHandleGroupChangeOwner(response http.ResponseWriter, request *http.Requ
 	newOwner, err := CacheGetUserByName(newOwnerName)
 	if err != nil {
 		newOwner = &User{Name: newOwnerName}
-		err = DbSetUserByName(ctx, newOwner)
+		err = DbUserSetByName(ctx, newOwner)
 		if err != nil {
 			http.Error(response, "user not in group", http.StatusBadRequest)
 			return
@@ -414,7 +432,7 @@ func HttpHandleGroupChangeOwner(response http.ResponseWriter, request *http.Requ
 	}
 
 	group.OwnerId = newOwner.Id
-	err = DbSetGroupOwnerId(ctx, group)
+	err = DbGroupSetOwnerId(ctx, group)
 	if err != nil {
 		http.Error(response, "internal server error", http.StatusInternalServerError)
 		return