package config

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

func TestLoadConfig_DefaultValues(t *testing.T) {
	cfg, err := Load("")
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if cfg.Server.Host != "127.0.0.1" {
		t.Errorf("expected host 127.0.0.1, got %s", cfg.Server.Host)
	}
	if cfg.Server.Port != 9090 {
		t.Errorf("expected port 9090, got %d", cfg.Server.Port)
	}
	if cfg.Database.Path != "data/clawtrade.db" {
		t.Errorf("expected db path data/clawtrade.db, got %s", cfg.Database.Path)
	}
}

func TestLoadConfig_FromFile(t *testing.T) {
	dir := t.TempDir()
	cfgPath := filepath.Join(dir, "config.yaml")
	content := []byte("server:\n  port: 8080\n")
	if err := os.WriteFile(cfgPath, content, 0644); err != nil {
		t.Fatal(err)
	}

	cfg, err := Load(cfgPath)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if cfg.Server.Port != 8080 {
		t.Errorf("expected port 8080, got %d", cfg.Server.Port)
	}
	if cfg.Server.Host != "127.0.0.1" {
		t.Errorf("expected default host, got %s", cfg.Server.Host)
	}
}