package config

import (
	"os"
	"path/filepath"
	"testing"
)

type testProfile struct {
	BaseURL  string `json:"base_url"`
	StreamID string `json:"stream_id"`
}

func TestLoadMissingReturnsDefault(t *testing.T) {
	store := NewStore[testProfile]("mcp-framework-test")
	path := filepath.Join(t.TempDir(), "missing.json")

	cfg, err := store.Load(path)
	if err != nil {
		t.Fatalf("Load returned error: %v", err)
	}

	if cfg.Version != CurrentVersion {
		t.Fatalf("Version = %d, want %d", cfg.Version, CurrentVersion)
	}
	if len(cfg.Profiles) != 0 {
		t.Fatalf("Profiles = %v, want empty", cfg.Profiles)
	}
}

func TestSaveAndLoadRoundTrip(t *testing.T) {
	store := NewStore[testProfile]("mcp-framework-test")
	dir := t.TempDir()
	path := filepath.Join(dir, "mcp-framework", "config.json")

	input := FileConfig[testProfile]{
		Version:        CurrentVersion,
		CurrentProfile: "prod",
		Profiles: map[string]testProfile{
			"prod": {
				BaseURL:  "https://api.example.com",
				StreamID: "stream-1",
			},
		},
	}

	if err := store.Save(path, input); err != nil {
		t.Fatalf("Save returned error: %v", err)
	}

	info, err := os.Stat(path)
	if err != nil {
		t.Fatalf("Stat returned error: %v", err)
	}
	if info.Mode().Perm() != 0o600 {
		t.Fatalf("file mode = %o, want 600", info.Mode().Perm())
	}

	dirInfo, err := os.Stat(filepath.Dir(path))
	if err != nil {
		t.Fatalf("Stat dir returned error: %v", err)
	}
	if dirInfo.Mode().Perm() != 0o700 {
		t.Fatalf("dir mode = %o, want 700", dirInfo.Mode().Perm())
	}

	cfg, err := store.Load(path)
	if err != nil {
		t.Fatalf("Load returned error: %v", err)
	}

	if cfg.CurrentProfile != "prod" {
		t.Fatalf("CurrentProfile = %q, want prod", cfg.CurrentProfile)
	}
	if cfg.Profiles["prod"].BaseURL != "https://api.example.com" {
		t.Fatalf("BaseURL = %q", cfg.Profiles["prod"].BaseURL)
	}
}