package config

import (
	"path/filepath"
	"testing"
)

func TestAcquireInstancePathsSeparatesConcurrentInstances(t *testing.T) {
	baseDir := t.TempDir()
	t.Setenv("DOUYU_DATA_DIR", baseDir)
	t.Setenv("DOUYU_CONFIG", "")
	t.Setenv("DOUYU_USERS", "")
	t.Setenv("DOUYU_LOG_DIR", "")
	t.Setenv("DOUYU_SUCCESS_DIR", "")
	t.Setenv("devserver", "")
	t.Setenv("frontenddevserverurl", "")

	first, err := AcquireInstancePaths()
	if err != nil {
		t.Fatal(err)
	}
	defer first.Release()
	if first.Name() != "默认实例" || first.Paths().DataDir != baseDir {
		t.Fatalf("first instance = %q, %q", first.Name(), first.Paths().DataDir)
	}

	second, err := AcquireInstancePaths()
	if err != nil {
		t.Fatal(err)
	}
	defer second.Release()
	wantSecondDir := filepath.Join(baseDir, "instances", "instance-2")
	if second.Name() != "实例 2" || second.Paths().DataDir != wantSecondDir {
		t.Fatalf("second instance = %q, %q", second.Name(), second.Paths().DataDir)
	}
	if second.Paths().LegacyConfigFile != "" || second.Paths().LegacyAccountFile != "" {
		t.Fatal("附加实例不应迁移默认实例或旧工作目录数据")
	}

	first.Release()
	reused, err := AcquireInstancePaths()
	if err != nil {
		t.Fatal(err)
	}
	defer reused.Release()
	if reused.Name() != "默认实例" || reused.Paths().DataDir != baseDir {
		t.Fatalf("reused instance = %q, %q", reused.Name(), reused.Paths().DataDir)
	}
}