package paths

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

func TestDataDirEnvWins(t *testing.T) {
	// The override is what lets one machine run two instances, and what makes
	// the installed layout testable from a checkout - on both sides.
	dir := t.TempDir()
	t.Setenv("BEHAVISION_DATA_DIR", dir)
	if got := StateRoot(); got != dir {
		t.Fatalf("StateRoot() = %q, want %q", got, dir)
	}
}

func TestEverythingLivesUnderTheStateRoot(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("BEHAVISION_DATA_DIR", dir)
	for name, got := range map[string]string{
		"agent config": AgentConfig(),
		"spool":        SpoolDir(),
		"engine log":   EngineLog(),
		"credentials":  APICredentials(),
	} {
		if !strings.HasPrefix(got, dir) {
			t.Errorf("%s resolved outside the state root: %s", name, got)
		}
	}
}

func TestEnsureStateIsIdempotent(t *testing.T) {
	dir := filepath.Join(t.TempDir(), "fresh")
	t.Setenv("BEHAVISION_DATA_DIR", dir)
	if err := EnsureState(); err != nil {
		t.Fatal(err)
	}
	if err := EnsureState(); err != nil {
		t.Fatalf("second call failed: %v", err)
	}
}