Initial scaffold: certificate control plane v0.1.0

internal/api/handler/notifications.go

@@ -0,0 +1,125 @@
+package handler
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/shankar0123/certctl/internal/api/middleware"
+	"github.com/shankar0123/certctl/internal/domain"
+)
+
+// NotificationService defines the service interface for notification operations.
+type NotificationService interface {
+	ListNotifications(page, perPage int) ([]domain.NotificationEvent, int64, error)
+	GetNotification(id string) (*domain.NotificationEvent, error)
+	MarkAsRead(id string) error
+}
+
+// NotificationHandler handles HTTP requests for notification operations.
+type NotificationHandler struct {
+	svc NotificationService
+}
+
+// NewNotificationHandler creates a new NotificationHandler with a service dependency.
+func NewNotificationHandler(svc NotificationService) NotificationHandler {
+	return NotificationHandler{svc: svc}
+}
+
+// ListNotifications lists notifications.
+// GET /api/v1/notifications?page=1&per_page=50
+func (h NotificationHandler) ListNotifications(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		Error(w, http.StatusMethodNotAllowed, "Method not allowed")
+		return
+	}
+
+	requestID := middleware.GetRequestID(r.Context())
+
+	page := 1
+	perPage := 50
+	query := r.URL.Query()
+	if p := query.Get("page"); p != "" {
+		if parsed, err := strconv.Atoi(p); err == nil && parsed > 0 {
+			page = parsed
+		}
+	}
+	if pp := query.Get("per_page"); pp != "" {
+		if parsed, err := strconv.Atoi(pp); err == nil && parsed > 0 && parsed <= 500 {
+			perPage = parsed
+		}
+	}
+
+	notifications, total, err := h.svc.ListNotifications(page, perPage)
+	if err != nil {
+		ErrorWithRequestID(w, http.StatusInternalServerError, "Failed to list notifications", requestID)
+		return
+	}
+
+	response := PagedResponse{
+		Data:    notifications,
+		Total:   total,
+		Page:    page,
+		PerPage: perPage,
+	}
+
+	JSON(w, http.StatusOK, response)
+}
+
+// GetNotification retrieves a single notification by ID.
+// GET /api/v1/notifications/{id}
+func (h NotificationHandler) GetNotification(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		Error(w, http.StatusMethodNotAllowed, "Method not allowed")
+		return
+	}
+
+	requestID := middleware.GetRequestID(r.Context())
+
+	id := strings.TrimPrefix(r.URL.Path, "/api/v1/notifications/")
+	parts := strings.Split(id, "/")
+	if len(parts) == 0 || parts[0] == "" {
+		ErrorWithRequestID(w, http.StatusBadRequest, "Notification ID is required", requestID)
+		return
+	}
+	id = parts[0]
+
+	notification, err := h.svc.GetNotification(id)
+	if err != nil {
+		ErrorWithRequestID(w, http.StatusNotFound, "Notification not found", requestID)
+		return
+	}
+
+	JSON(w, http.StatusOK, notification)
+}
+
+// MarkAsRead marks a notification as read.
+// POST /api/v1/notifications/{id}/read
+func (h NotificationHandler) MarkAsRead(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		Error(w, http.StatusMethodNotAllowed, "Method not allowed")
+		return
+	}
+
+	requestID := middleware.GetRequestID(r.Context())
+
+	// Extract notification ID from path /api/v1/notifications/{id}/read
+	path := strings.TrimPrefix(r.URL.Path, "/api/v1/notifications/")
+	parts := strings.Split(path, "/")
+	if len(parts) < 2 || parts[0] == "" {
+		ErrorWithRequestID(w, http.StatusBadRequest, "Notification ID is required", requestID)
+		return
+	}
+	notificationID := parts[0]
+
+	if err := h.svc.MarkAsRead(notificationID); err != nil {
+		ErrorWithRequestID(w, http.StatusInternalServerError, "Failed to mark notification as read", requestID)
+		return
+	}
+
+	response := map[string]string{
+		"status": "marked_as_read",
+	}
+
+	JSON(w, http.StatusOK, response)
+}