package config

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

func TestResolvedHomeDir_Default(t *testing.T) {
	cfg := &Config{}
	home, err := os.UserHomeDir()
	if err != nil {
		t.Skip("cannot determine home directory")
	}
	want := filepath.Join(home, ".kandev")
	if got := cfg.ResolvedHomeDir(); got != want {
		t.Errorf("ResolvedHomeDir() = %q, want %q", got, want)
	}
}

func TestResolvedHomeDir_WithHomeDir(t *testing.T) {
	cfg := &Config{HomeDir: "/custom/kandev"}
	if got := cfg.ResolvedHomeDir(); got != "/custom/kandev" {
		t.Errorf("ResolvedHomeDir() = %q, want %q", got, "/custom/kandev")
	}
}

func TestResolvedHomeDir_TildeExpansion(t *testing.T) {
	home, err := os.UserHomeDir()
	if err != nil {
		t.Skip("cannot determine home directory")
	}
	cfg := &Config{HomeDir: "~/.kandev-dev"}
	want := filepath.Join(home, ".kandev-dev")
	if got := cfg.ResolvedHomeDir(); got != want {
		t.Errorf("ResolvedHomeDir() = %q, want %q", got, want)
	}
}

func TestResolvedDataDir_Default(t *testing.T) {
	cfg := &Config{}
	home, err := os.UserHomeDir()
	if err != nil {
		t.Skip("cannot determine home directory")
	}
	want := filepath.Join(home, ".kandev", "data")
	if got := cfg.ResolvedDataDir(); got != want {
		t.Errorf("ResolvedDataDir() = %q, want %q", got, want)
	}
}

func TestResolvedDataDir_DerivedFromHomeDir(t *testing.T) {
	// Data always lives under <HomeDir>/data. No independent override.
	cfg := &Config{HomeDir: "/custom/kandev"}
	want := filepath.Join("/custom/kandev", "data")
	if got := cfg.ResolvedDataDir(); got != want {
		t.Errorf("ResolvedDataDir() = %q, want %q", got, want)
	}
}