package config

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

func TestLoadTOML(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, "config.toml")
	content := `
current_provider = "rainyun"
output = "table"

[providers.rainyun]
api_key = "sk-test123"

[providers.aliyun]
access_key_id = "ak-xxx"
access_key_secret = "sk-xxx"
`
	if err := os.WriteFile(path, []byte(content), 0600); err != nil {
		t.Fatal(err)
	}

	cfg, err := Load(path)
	if err != nil {
		t.Fatalf("Load() error: %v", err)
	}
	if cfg.CurrentProvider != "rainyun" {
		t.Errorf("CurrentProvider = %q, want %q", cfg.CurrentProvider, "rainyun")
	}
	if cfg.Output != "table" {
		t.Errorf("Output = %q, want %q", cfg.Output, "table")
	}
	if cfg.Providers["rainyun"].APIKey != "sk-test123" {
		t.Errorf("rainyun api_key = %q, want %q", cfg.Providers["rainyun"].APIKey, "sk-test123")
	}
	if cfg.Providers["aliyun"].AccessKeyID != "ak-xxx" {
		t.Errorf("aliyun access_key_id = %q, want %q", cfg.Providers["aliyun"].AccessKeyID, "ak-xxx")
	}
}

func TestLoadDefaults(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, "empty.toml")
	if err := os.WriteFile(path, []byte(""), 0600); err != nil {
		t.Fatal(err)
	}
	cfg, err := Load(path)
	if err != nil {
		t.Fatalf("Load() error: %v", err)
	}
	if cfg.Output != "table" {
		t.Errorf("default Output = %q, want %q", cfg.Output, "table")
	}
}

func TestSave(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, "out.toml")
	cfg := &Config{
		CurrentProvider: "test",
		Output:          "json",
		Providers: map[string]ProviderConfig{
			"test": {APIKey: "secret"},
		},
	}
	if err := Save(path, cfg); err != nil {
		t.Fatalf("Save() error: %v", err)
	}
	loaded, err := Load(path)
	if err != nil {
		t.Fatalf("re-Load() error: %v", err)
	}
	if loaded.CurrentProvider != "test" {
		t.Errorf("roundtrip CurrentProvider = %q", loaded.CurrentProvider)
	}
}

func TestDefaultPath(t *testing.T) {
	path := DefaultPath()
	if path == "" {
		t.Error("DefaultPath() returned empty")
	}
}

func TestEnsureDir(t *testing.T) {
	dir := filepath.Join(t.TempDir(), "sub", "dir")
	path := filepath.Join(dir, "config.toml")
	cfg := &Config{Output: "table"}
	if err := Save(path, cfg); err != nil {
		t.Fatalf("Save() to deep dir error: %v", err)
	}
}