Implement deletion of applications

api/application.go

@@ -13,12 +13,15 @@ import (
 // The ApplicationDatabase interface for encapsulating database access.
 type ApplicationDatabase interface {
 	CreateApplication(application *model.Application) error
+	DeleteApplication(application *model.Application) error
+	GetApplicationByID(ID uint) (*model.Application, error)
 	GetApplicationByToken(token string) (*model.Application, error)
 }
 
 // The ApplicationDispatcher interface for relaying notifications.
 type ApplicationDispatcher interface {
 	RegisterApplication(name, user string) (string, error)
+	DeregisterApplication(matrixID string) error
 }
 
 // ApplicationHandler holds information for processing requests about applications.
@@ -32,16 +35,17 @@ func (h *ApplicationHandler) applicationExists(token string) bool {
 	return application != nil
 }
 
-// CreateApplication is used to create a new user.
+// CreateApplication creates a user.
 func (h *ApplicationHandler) CreateApplication(ctx *gin.Context) {
-	application := model.Application{}
+	var createApplication model.CreateApplication
 
-	if success := successOrAbort(ctx, http.StatusBadRequest, ctx.Bind(&application)); !success {
+	if success := successOrAbort(ctx, http.StatusBadRequest, ctx.Bind(&createApplication)); !success {
 		return
 	}
 
 	user := authentication.GetUser(ctx)
 
+	application := model.Application{}
 	application.Token = authentication.GenerateNotExistingToken(authentication.GenerateApplicationToken, h.applicationExists)
 	application.UserID = user.ID
 
@@ -61,3 +65,30 @@ func (h *ApplicationHandler) CreateApplication(ctx *gin.Context) {
 
 	ctx.JSON(http.StatusOK, &application)
 }
+
+// DeleteApplication deletes a user with a certain ID.
+func (h *ApplicationHandler) DeleteApplication(ctx *gin.Context) {
+	var deleteApplication model.DeleteApplication
+
+	if success := successOrAbort(ctx, http.StatusBadRequest, ctx.BindUri(&deleteApplication)); !success {
+		return
+	}
+
+	application, err := h.DB.GetApplicationByID(deleteApplication.ID)
+
+	log.Printf("Deleting application %s.\n", application.Name)
+
+	if success := successOrAbort(ctx, http.StatusBadRequest, err); !success {
+		return
+	}
+
+	if success := successOrAbort(ctx, http.StatusInternalServerError, h.Dispatcher.DeregisterApplication(application.MatrixID)); !success {
+		return
+	}
+
+	if success := successOrAbort(ctx, http.StatusInternalServerError, h.DB.DeleteApplication(application)); !success {
+		return
+	}
+
+	ctx.JSON(http.StatusOK, gin.H{})
+}

api/notification.go

@@ -29,7 +29,7 @@ type NotificationHandler struct {
 
 // CreateNotification is used to create a new notification for a user.
 func (h *NotificationHandler) CreateNotification(ctx *gin.Context) {
-	notification := model.Notification{}
+	var notification model.Notification
 
 	if success := successOrAbort(ctx, http.StatusBadRequest, ctx.Bind(&notification)); !success {
 		return

api/user.go

@@ -27,7 +27,7 @@ func (h *UserHandler) userExists(name string) bool {
 
 // CreateUser creates a new user.
 func (h *UserHandler) CreateUser(ctx *gin.Context) {
-	externalUser := model.ExternalUserWithCredentials{}
+	var externalUser model.ExternalUserWithCredentials
 
 	if success := successOrAbort(ctx, http.StatusBadRequest, ctx.Bind(&externalUser)); !success {
 		return