feat: Adds handlers for DELETE for user accounts (#38)

internal/api/handlers.go

@@ -34,6 +34,7 @@ func NewGoCertRouter(env *Environment) http.Handler {
 	apiV1Router.HandleFunc("GET /accounts/{id}", GetUserAccount(env))
 	apiV1Router.HandleFunc("GET /accounts", GetUserAccounts(env))
 	apiV1Router.HandleFunc("POST /accounts", PostUserAccount(env))
+	apiV1Router.HandleFunc("DELETE /accounts/{id}", DeleteUserAccount(env))
 
 	m := metrics.NewMetricsSubsystem(env.DB)
 	frontendHandler := newFrontendFileServer()
@@ -360,6 +361,27 @@ func PostUserAccount(env *Environment) http.HandlerFunc {
 	}
 }
 
+// DeleteUserAccount handler receives an id as a path parameter,
+// deletes the corresponding User Account, and returns a http.StatusNoContent on success
+func DeleteUserAccount(env *Environment) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		id := r.PathValue("id")
+		insertId, err := env.DB.DeleteUser(id)
+		if err != nil {
+			if errors.Is(err, certdb.ErrIdNotFound) {
+				logErrorAndWriteResponse(err.Error(), http.StatusNotFound, w)
+				return
+			}
+			logErrorAndWriteResponse(err.Error(), http.StatusInternalServerError, w)
+			return
+		}
+		w.WriteHeader(http.StatusAccepted)
+		if _, err := w.Write([]byte(strconv.FormatInt(insertId, 10))); err != nil {
+			logErrorAndWriteResponse(err.Error(), http.StatusInternalServerError, w)
+		}
+	}
+}
+
 // logErrorAndWriteResponse is a helper function that logs any error and writes it back as an http response
 func logErrorAndWriteResponse(msg string, status int, w http.ResponseWriter) {
 	errMsg := fmt.Sprintf("error: %s", msg)

internal/api/handlers_test.go

@@ -441,6 +441,22 @@ func TestGoCertUsersHandlers(t *testing.T) {
 			response: "error: Username is required",
 			status:   http.StatusBadRequest,
 		},
+		{
+			desc:     "Delete user success",
+			method:   "DELETE",
+			path:     "/api/v1/accounts/2",
+			data:     invalidUser,
+			response: "1",
+			status:   http.StatusAccepted,
+		},
+		{
+			desc:     "Delete user failure",
+			method:   "DELETE",
+			path:     "/api/v1/accounts/2",
+			data:     invalidUser,
+			response: "error: id not found",
+			status:   http.StatusNotFound,
+		},
 	}
 	for _, tC := range testCases {
 		t.Run(tC.desc, func(t *testing.T) {