fixed some broken APIs

users/users.go

@@ -98,10 +98,26 @@ func (con Connection) SetUserPermissions(c *gin.Context) {
 	c.JSON(200, "OK")
 }
 
+func (con Connection) DeleteUser(c *gin.Context) {
+	username := c.Param("user_id")
+
+	_, err := con.connection.Database("Backend").Collection("Users").DeleteOne(
+		context.TODO(),
+		bson.D{{Key: "Username", Value: username}},
+	)
+	if err != nil {
+		c.AbortWithError(500, err)
+		return
+	}
+
+	c.JSON(200, "OK")
+}
+
 func LoadGroup(group *gin.RouterGroup, client *mongo.Client, config models.GlobalConfig) {
 	connection := Connection{connection: client}
 	group.GET("/", auth.AuthorizedTo(0), connection.GetUsers)
 	group.GET("/@me", auth.AuthorizedTo(0), connection.GetUser)
 	group.POST("/", auth.AuthorizedTo(models.Admin), connection.InviteUser)
+	group.DELETE("/:user_id", auth.AuthorizedTo(models.Admin), connection.DeleteUser)
 	group.PATCH("/:user_id/permissions", auth.AuthorizedTo(models.Admin), connection.SetUserPermissions)
 }