package cli

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

func TestLoadConfigDefaults(t *testing.T) {
	t.Setenv("HOME", t.TempDir())
	t.Setenv("KMSVC_SERVER", "")
	t.Setenv("KMSVC_TOKEN", "")
	t.Setenv("KMSVC_OUTPUT", "")

	cfg := LoadConfig()
	if cfg.Output != "table" {
		t.Errorf("Output = %q, want default %q", cfg.Output, "table")
	}
	if cfg.Server != "" || cfg.Token != "" {
		t.Errorf("expected empty Server/Token with no file or env, got %+v", cfg)
	}
}

func TestLoadConfigFileThenEnvOverride(t *testing.T) {
	home := t.TempDir()
	t.Setenv("HOME", home)

	dir := filepath.Join(home, ".kmsvc")
	if err := os.MkdirAll(dir, 0o755); err != nil {
		t.Fatal(err)
	}
	content := "server: file-server:443\noutput: json\n"
	if err := os.WriteFile(filepath.Join(dir, "config.yaml"), []byte(content), 0o644); err != nil {
		t.Fatal(err)
	}

	t.Setenv("KMSVC_SERVER", "")
	t.Setenv("KMSVC_OUTPUT", "")
	t.Setenv("KMSVC_TOKEN", "")

	cfg := LoadConfig()
	if cfg.Server != "file-server:443" || cfg.Output != "json" {
		t.Fatalf("expected file values, got %+v", cfg)
	}

	// Env var must win over the file.
	t.Setenv("KMSVC_SERVER", "env-server:443")
	cfg = LoadConfig()
	if cfg.Server != "env-server:443" {
		t.Errorf("Server = %q, want env override %q", cfg.Server, "env-server:443")
	}
	if cfg.Output != "json" {
		t.Errorf("Output = %q, want file value %q to survive (env unset)", cfg.Output, "json")
	}
}