add endpoint for delete

internal/api/context.go

@@ -20,6 +20,17 @@ func getID(ctx *gin.Context) (uint, error) {
 	return id, nil
 }
 
+func getMessageID(ctx *gin.Context) (string, error) {
+	id, ok := ctx.MustGet("messageid").(string)
+	if !ok {
+		err := errors.New("an error occured while retrieving messageID from context")
+		ctx.AbortWithError(http.StatusInternalServerError, err)
+		return "", err
+	}
+
+	return id, nil
+}
+
 func getApplication(ctx *gin.Context, db Database) (*model.Application, error) {
 	id, err := getID(ctx)
 	if err != nil {

internal/api/middleware.go

@@ -8,6 +8,10 @@ type idInURI struct {
 	ID uint `uri:"id" binding:"required"`
 }
 
+type messageIdInURI struct {
+	MessageID string `uri:"messageid" binding:"required"`
+}
+
 // RequireIDInURI returns a Gin middleware which requires an ID to be supplied in the URI of the request.
 func RequireIDInURI() gin.HandlerFunc {
 	return func(ctx *gin.Context) {
@@ -20,3 +24,16 @@ func RequireIDInURI() gin.HandlerFunc {
 		ctx.Set("id", requestModel.ID)
 	}
 }
+
+// RequireMessageIDInURI returns a Gin middleware which requires an messageID to be supplied in the URI of the request.
+func RequireMessageIDInURI() gin.HandlerFunc {
+	return func(ctx *gin.Context) {
+		var requestModel messageIdInURI
+
+		if err := ctx.BindUri(&requestModel); err != nil {
+			return
+		}
+
+		ctx.Set("messageid", requestModel.MessageID)
+	}
+}

internal/api/notification.go

@@ -18,8 +18,8 @@ type NotificationDatabase interface {
 
 // The NotificationDispatcher interface for relaying notifications.
 type NotificationDispatcher interface {
-	SendNotification(a *model.Application, n *model.Notification) error
-	SendDeleteNotification(a *model.Application, n *model.DeleteNotification) error
+	SendNotification(a *model.Application, n *model.Notification) (id string, err error)
+	DeleteNotification(a *model.Application, n *model.DeleteNotification) error
 }
 
 // NotificationHandler holds information for processing requests about notifications.
@@ -39,24 +39,36 @@ func (h *NotificationHandler) CreateNotification(ctx *gin.Context) {
 	application := authentication.GetApplication(ctx)
 	log.Printf("Sending notification for application %s.", application.Name)
 
-	notification.ID = 0
 	notification.ApplicationID = application.ID
 	if strings.TrimSpace(notification.Title) == "" {
 		notification.Title = application.Name
 	}
 	notification.Date = time.Now()
 
-	if success := successOrAbort(ctx, http.StatusInternalServerError, h.DP.SendNotification(application, &notification)); !success {
+	messageID, err := h.DP.SendNotification(application, &notification)
+
+	if success := successOrAbort(ctx, http.StatusInternalServerError, err); !success {
 		return
 	}
 
+	notification.ID = messageID
+
 	ctx.JSON(http.StatusOK, &notification)
 }
 
+// DeleteNotification is used to delete (or mark as deleted) a notification for a user
 func (h *NotificationHandler) DeleteNotification(ctx *gin.Context) {
 	application := authentication.GetApplication(ctx)
+	id, err := getMessageID(ctx)
 
-	n := model.DeleteNotification{}
+	if success := successOrAbort(ctx, http.StatusUnprocessableEntity, err); !success {
+		return
+	}
 
-	h.DP.SendDeleteNotification(application, &n)
+	n := model.DeleteNotification{
+		ID:   id,
+		Date: time.Now(),
+	}
+
+	h.DP.DeleteNotification(application, &n)
 }

internal/dispatcher/notification.go

@@ -1,7 +1,6 @@
 package dispatcher
 
 import (
-	"encoding/json"
 	"fmt"
 	"html"
 	"log"
@@ -11,7 +10,7 @@ import (
 	"github.com/pushbits/server/internal/model"
 )
 
-type ExampleEvent struct {
+type ReplyEvent struct {
 	Body      string    `json:"body"`
 	Msgtype   string    `json:"msgtype"`
 	RelatesTo RelatesTo `json:"m.relates_to,omitempty"`
@@ -22,7 +21,7 @@ type RelatesTo struct {
 }
 
 // SendNotification sends a notification to the specified user.
-func (d *Dispatcher) SendNotification(a *model.Application, n *model.Notification) error {
+func (d *Dispatcher) SendNotification(a *model.Application, n *model.Notification) (id string, err error) {
 	log.Printf("Sending notification to room %s.", a.MatrixID)
 
 	plainMessage := strings.TrimSpace(n.Message)
@@ -33,41 +32,37 @@ func (d *Dispatcher) SendNotification(a *model.Application, n *model.Notificatio
 	text := fmt.Sprintf("%s\n\n%s", plainTitle, plainMessage)
 	formattedText := fmt.Sprintf("%s %s", title, message)
 
-	_, err := d.client.SendFormattedText(a.MatrixID, text, formattedText)
+	respSendEvent, err := d.client.SendFormattedText(a.MatrixID, text, formattedText)
 
-	return err
+	return respSendEvent.EventID, err
 }
 
-func (d *Dispatcher) SendDeleteNotification(a *model.Application, n *model.DeleteNotification) error {
+// DeleteNotification sends a notification to the specified user that another notificaion is deleted
+func (d *Dispatcher) DeleteNotification(a *model.Application, n *model.DeleteNotification) error {
 	log.Printf("Sending delete notification to room %s", a.MatrixID)
-	event := ExampleEvent{
-		Body:    "Testmessage",
+	event := ReplyEvent{
+		Body:    "<i>This message got deleted.</i>",
 		Msgtype: "m.text",
 	}
 
 	irt := make(map[string]string)
-
-	irt["event_id"] = "$uf5OLKPaefHTZhc2lxSIY7If7pLFcNHcMZLbMfS-7qw"
-
+	irt["event_id"] = n.ID
 	rt := RelatesTo{
 		InReplyTo: irt,
 	}
-
 	event.RelatesTo = rt
 
 	_, err := d.client.SendMessageEvent(a.MatrixID, "m.room.message", event)
 
-	if err != nil {
-		log.Println(err)
-	}
+	return err
 
+	/*
 		messages, _ := d.client.Messages(a.MatrixID, "", "", 'b', 10)
 
 		js, _ := json.Marshal(messages)
 
 		log.Println(string(js))
-
-	return nil
+	*/
 }
 
 // HTML-formats the title

internal/model/notification.go

@@ -6,7 +6,7 @@ import (
 
 // Notification holds information like the message, the title, and the priority of a notification.
 type Notification struct {
-	ID            uint                   `json:"id"`
+	ID            string                 `json:"id"`
 	ApplicationID uint                   `json:"appid"`
 	Message       string                 `json:"message" form:"message" query:"message" binding:"required"`
 	Title         string                 `json:"title" form:"title" query:"title"`
@@ -17,11 +17,6 @@ type Notification struct {
 
 // DeleteNotification holds information like the message, the reply to message id and the priority of a deletion notification.
 type DeleteNotification struct {
-	ID            uint                   `json:"id"`
-	DeleteID      uint                   `json:"deleteid"`
-	ApplicationID uint                   `json:"appid"`
-	Message       string                 `json:"message" form:"message" query:"message" binding:"required"`
-	Priority      int                    `json:"priority" form:"priority" query:"priority"`
-	Extras        map[string]interface{} `json:"extras,omitempty" form:"-" query:"-"`
+	ID   string    `json:"id" form:"id"`
 	Date time.Time `json:"date"`
 }

internal/router/router.go

@@ -46,6 +46,7 @@ func Create(debug bool, cm *credentials.Manager, db *database.Database, dp *disp
 	r.GET("/health", healthHandler.Health)
 
 	r.POST("/message", auth.RequireApplicationToken(), notificationHandler.CreateNotification)
+	r.DELETE("/message/:messageid", api.RequireIDInURI(), auth.RequireApplicationToken(), notificationHandler.DeleteNotification)
 
 	r.GET("/test", auth.RequireApplicationToken(), notificationHandler.DeleteNotification)