Initial scaffold: certificate control plane v0.1.0

internal/api/handler/targets.go

@@ -0,0 +1,177 @@
+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/shankar0123/certctl/internal/api/middleware"
+	"github.com/shankar0123/certctl/internal/domain"
+)
+
+// TargetService defines the service interface for deployment target operations.
+type TargetService interface {
+	ListTargets(page, perPage int) ([]domain.DeploymentTarget, int64, error)
+	GetTarget(id string) (*domain.DeploymentTarget, error)
+	CreateTarget(target domain.DeploymentTarget) (*domain.DeploymentTarget, error)
+	UpdateTarget(id string, target domain.DeploymentTarget) (*domain.DeploymentTarget, error)
+	DeleteTarget(id string) error
+}
+
+// TargetHandler handles HTTP requests for deployment target operations.
+type TargetHandler struct {
+	svc TargetService
+}
+
+// NewTargetHandler creates a new TargetHandler with a service dependency.
+func NewTargetHandler(svc TargetService) TargetHandler {
+	return TargetHandler{svc: svc}
+}
+
+// ListTargets lists all deployment targets.
+// GET /api/v1/targets?page=1&per_page=50
+func (h TargetHandler) ListTargets(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
+		}
+	}
+
+	targets, total, err := h.svc.ListTargets(page, perPage)
+	if err != nil {
+		ErrorWithRequestID(w, http.StatusInternalServerError, "Failed to list targets", requestID)
+		return
+	}
+
+	response := PagedResponse{
+		Data:    targets,
+		Total:   total,
+		Page:    page,
+		PerPage: perPage,
+	}
+
+	JSON(w, http.StatusOK, response)
+}
+
+// GetTarget retrieves a single deployment target by ID.
+// GET /api/v1/targets/{id}
+func (h TargetHandler) GetTarget(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/targets/")
+	if id == "" || strings.Contains(id, "/") {
+		ErrorWithRequestID(w, http.StatusBadRequest, "Target ID is required", requestID)
+		return
+	}
+
+	target, err := h.svc.GetTarget(id)
+	if err != nil {
+		ErrorWithRequestID(w, http.StatusNotFound, "Target not found", requestID)
+		return
+	}
+
+	JSON(w, http.StatusOK, target)
+}
+
+// CreateTarget creates a new deployment target.
+// POST /api/v1/targets
+func (h TargetHandler) CreateTarget(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		Error(w, http.StatusMethodNotAllowed, "Method not allowed")
+		return
+	}
+
+	requestID := middleware.GetRequestID(r.Context())
+
+	var target domain.DeploymentTarget
+	if err := json.NewDecoder(r.Body).Decode(&target); err != nil {
+		ErrorWithRequestID(w, http.StatusBadRequest, "Invalid request body", requestID)
+		return
+	}
+
+	created, err := h.svc.CreateTarget(target)
+	if err != nil {
+		ErrorWithRequestID(w, http.StatusInternalServerError, "Failed to create target", requestID)
+		return
+	}
+
+	JSON(w, http.StatusCreated, created)
+}
+
+// UpdateTarget updates an existing deployment target.
+// PUT /api/v1/targets/{id}
+func (h TargetHandler) UpdateTarget(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPut {
+		Error(w, http.StatusMethodNotAllowed, "Method not allowed")
+		return
+	}
+
+	requestID := middleware.GetRequestID(r.Context())
+
+	id := strings.TrimPrefix(r.URL.Path, "/api/v1/targets/")
+	parts := strings.Split(id, "/")
+	if len(parts) == 0 || parts[0] == "" {
+		ErrorWithRequestID(w, http.StatusBadRequest, "Target ID is required", requestID)
+		return
+	}
+	id = parts[0]
+
+	var target domain.DeploymentTarget
+	if err := json.NewDecoder(r.Body).Decode(&target); err != nil {
+		ErrorWithRequestID(w, http.StatusBadRequest, "Invalid request body", requestID)
+		return
+	}
+
+	updated, err := h.svc.UpdateTarget(id, target)
+	if err != nil {
+		ErrorWithRequestID(w, http.StatusInternalServerError, "Failed to update target", requestID)
+		return
+	}
+
+	JSON(w, http.StatusOK, updated)
+}
+
+// DeleteTarget deletes a deployment target.
+// DELETE /api/v1/targets/{id}
+func (h TargetHandler) DeleteTarget(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodDelete {
+		Error(w, http.StatusMethodNotAllowed, "Method not allowed")
+		return
+	}
+
+	requestID := middleware.GetRequestID(r.Context())
+
+	id := strings.TrimPrefix(r.URL.Path, "/api/v1/targets/")
+	if id == "" || strings.Contains(id, "/") {
+		ErrorWithRequestID(w, http.StatusBadRequest, "Target ID is required", requestID)
+		return
+	}
+
+	if err := h.svc.DeleteTarget(id); err != nil {
+		ErrorWithRequestID(w, http.StatusInternalServerError, "Failed to delete target", requestID)
+		return
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+}