feat: add diagnostics and safe reset maintenance

internal/profile/diagnostic_test.go

@@ -0,0 +1,35 @@
+package profile_test
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"proxyctl/internal/profile"
+)
+
+func TestReadOnlyLoadValidatesWithoutRepairingOrCreatingStorage(t *testing.T) {
+	directory := filepath.Join(t.TempDir(), "proxyctl")
+	if err := os.MkdirAll(directory, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	path := filepath.Join(directory, "profiles.json")
+	if err := os.WriteFile(path, []byte(`{"profiles":[{"name":"office","mode":"single","singleUrl":"http://proxy.test:8080","httpUrl":"http://proxy.test:8080","httpsUrl":"http://proxy.test:8080","allUrl":"http://proxy.test:8080"}],"activeProfile":"office"}`), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	store := profile.NewFileStore(path)
+	state, err := store.ReadOnlyLoad()
+	if err != nil || state.ActiveProfile != "office" {
+		t.Fatalf("read-only load state=%#v err=%v", state, err)
+	}
+	info, err := os.Stat(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if info.Mode().Perm() != 0o644 {
+		t.Fatalf("read-only load changed mode to %o", info.Mode().Perm())
+	}
+	if _, err := os.Stat(path + ".lock"); !os.IsNotExist(err) {
+		t.Fatalf("read-only load created lock: %v", err)
+	}
+}