Add put task endpoint (#33)

Closes #23

Reviewed-on: #33

backend/main.go

@@ -257,6 +257,38 @@ func getTask(c *gin.Context) {
 	c.JSON(http.StatusOK, &response)
 }
 
+func putTask(c *gin.Context) {
+	taskIdStr := c.Param("taskId")
+	taskId, err := strconv.Atoi(taskIdStr)
+	if err != nil {
+		log.Printf("Invalid task ID: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid task ID"})
+		return
+	}
+
+	var taskRequest CreateTaskRequest
+	if err := c.ShouldBindJSON(&taskRequest); err != nil {
+		log.Printf("Error parsing request body: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request body"})
+		return
+	}
+
+	_, err = db.GetTask(taskId)
+	if errors.Is(err, mysqlite.ErrNoRows) {
+		c.JSON(http.StatusNotFound, gin.H{"error": "Task not found"})
+		return
+	}
+
+	err = db.UpdateTask(taskId, &taskRequest)
+	if err != nil {
+		log.Printf("Error updating task: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": ErrInternalServerError})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Task updated successfully"})
+}
+
 /*
 *
 Initialises the database, and then starts the server.
@@ -275,6 +307,7 @@ func start(ctx context.Context, config *ServerConfig) {
 	router.POST("/api/tasks", createTask)
 	router.GET("/api/tasks", getTasks)
 	router.GET("/api/task/:taskId", getTask)
+	router.PUT("/api/task/:taskId", putTask)
 
 	srv := &http.Server{
 		Addr:    config.Addr,