package config

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

// 验证用户配置 YAML 往返：Save 后 Load 得到一致的归一化字段，
// 特别是 *bool（persistentMode）与新增的 refreshIntervalSeconds。
func TestConfigRoundTrip(t *testing.T) {
	path := filepath.Join(t.TempDir(), "config.yaml")
	store := NewStore(path, "")

	input := DefaultConfig()
	input.HomeMetrics.IncludeCacheWriteInHitRate = true
	input.HomeMetrics.RefreshIntervalSeconds = 30
	input.HomeMetrics.PersistentMode = boolPtr(false)
	input.Routing.Mode = "local"
	input.ModelAdapters = []ModelAdapterConfig{} // Normalize 会补默认值

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

	loaded, err := store.Load(nil)
	if err != nil {
		t.Fatalf("load: %v", err)
	}

	if loaded.HomeMetrics.IncludeCacheWriteInHitRate != true {
		t.Error("includeCacheWriteInHitRate round-trip mismatch")
	}
	if loaded.HomeMetrics.RefreshIntervalSeconds != 30 {
		t.Errorf("refreshIntervalSeconds = %d, want 30", loaded.HomeMetrics.RefreshIntervalSeconds)
	}
	if loaded.HomeMetrics.PersistentMode == nil || *loaded.HomeMetrics.PersistentMode != false {
		t.Error("persistentMode round-trip mismatch: want false")
	}
	if loaded.Routing.Mode != "local" {
		t.Errorf("routing.mode = %q, want local", loaded.Routing.Mode)
	}

	// 幂等：二次保存后再读仍一致。
	if _, err := store.Save(nil, loaded); err != nil {
		t.Fatalf("resave: %v", err)
	}
	reloaded, err := store.Load(nil)
	if err != nil {
		t.Fatalf("reload: %v", err)
	}
	if reloaded.HomeMetrics.RefreshIntervalSeconds != 30 {
		t.Errorf("second load refreshIntervalSeconds = %d, want 30", reloaded.HomeMetrics.RefreshIntervalSeconds)
	}
	if _, err := os.Stat(path); err != nil {
		t.Fatalf("config file missing: %v", err)
	}
}