本来の期限に加えて自分の中での目標期限を設定できるよう仕様追加

internal/handler/api_handler.go

@@ -239,6 +239,7 @@ type CreateAssignmentInput struct {
 	Subject     string `json:"subject"`
 	Priority    string `json:"priority"`
 	DueDate     string `json:"due_date" binding:"required"`
+	SoftDueDate string `json:"soft_due_date"`
 
 	ReminderEnabled       bool   `json:"reminder_enabled"`
 	ReminderAt            string `json:"reminder_at"`
@@ -352,7 +353,17 @@ func (h *APIHandler) CreateAssignment(c *gin.Context) {
 		return
 	}
 
-	assignment, err := h.assignmentService.Create(userID, input.Title, input.Description, input.Subject, input.Priority, dueDate, input.ReminderEnabled, reminderAt, urgentReminder)
+	var softDueDate *time.Time
+	if input.SoftDueDate != "" {
+		parsedSoft, err := parseDateString(input.SoftDueDate)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid soft_due_date format"})
+			return
+		}
+		softDueDate = &parsedSoft
+	}
+
+	assignment, err := h.assignmentService.Create(userID, input.Title, input.Description, input.Subject, input.Priority, dueDate, softDueDate, input.ReminderEnabled, reminderAt, urgentReminder)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to create assignment"})
 		return
@@ -367,6 +378,7 @@ type UpdateAssignmentInput struct {
 	Subject               string `json:"subject"`
 	Priority              string `json:"priority"`
 	DueDate               string `json:"due_date"`
+	SoftDueDate           string `json:"soft_due_date"`
 	ReminderEnabled       *bool  `json:"reminder_enabled"`
 	ReminderAt            string `json:"reminder_at"`
 	UrgentReminderEnabled *bool  `json:"urgent_reminder_enabled"`
@@ -448,7 +460,17 @@ func (h *APIHandler) UpdateAssignment(c *gin.Context) {
 		urgentReminderEnabled = *input.UrgentReminderEnabled
 	}
 
-	assignment, err := h.assignmentService.Update(userID, uint(id), title, description, subject, priority, dueDate, reminderEnabled, reminderAt, urgentReminderEnabled)
+	softDueDate := existing.SoftDueDate
+	if input.SoftDueDate != "" {
+		parsedSoft, err := parseDateString(input.SoftDueDate)
+		if err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid soft_due_date format"})
+			return
+		}
+		softDueDate = &parsedSoft
+	}
+
+	assignment, err := h.assignmentService.Update(userID, uint(id), title, description, subject, priority, dueDate, softDueDate, reminderEnabled, reminderAt, urgentReminderEnabled)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update assignment"})
 		return