package config

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

	"github.com/fsnotify/fsnotify"
	"github.com/spf13/viper"
	"github.com/stretchr/testify/assert"
)

func TestLoad_Cov3(t *testing.T) {
	tmpDir := t.TempDir()
	configContent := `
app:
  name: test
  env: test
database:
  host: localhost
  port: 5432
  name: test_db
  user: postgres
  password: postgres
redis:
  host: localhost
  port: 6379
`
	configPath := filepath.Join(tmpDir, "config.yaml")
	assert.NoError(t, os.WriteFile(configPath, []byte(configContent), 0644))
	oldDir, _ := os.Getwd()
	assert.NoError(t, os.Chdir(tmpDir))
	defer os.Chdir(oldDir)
	cfg, err := Load()
	if err != nil {
		t.Skip("Load requires full config")
	}
	_ = cfg
}

func TestLoadDotEnvEnvironment_Cov3(t *testing.T) {
	LoadDotEnvEnvironment()
}

func TestLoadDotEnvEnvironment_WithFile_Cov3(t *testing.T) {
	tmpDir := t.TempDir()
	envContent := "TEST_KEY=test_value\n# comment\nEMPTY_LINE="
	envPath := filepath.Join(tmpDir, ".env")
	assert.NoError(t, os.WriteFile(envPath, []byte(envContent), 0644))
	oldDir, _ := os.Getwd()
	assert.NoError(t, os.Chdir(tmpDir))
	defer os.Chdir(oldDir)
	LoadDotEnvEnvironment()
	assert.Equal(t, "test_value", os.Getenv("TEST_KEY"))
	os.Unsetenv("TEST_KEY")
}

func TestLoadDotEnv_Cov3(t *testing.T) {
	tmpDir := t.TempDir()
	envContent := "GOCHAT_TEST_KEY=test_value\n# comment\n"
	envPath := filepath.Join(tmpDir, ".env")
	assert.NoError(t, os.WriteFile(envPath, []byte(envContent), 0644))
	oldDir, _ := os.Getwd()
	assert.NoError(t, os.Chdir(tmpDir))
	defer os.Chdir(oldDir)
	v := viper.New()
	envBindings := map[string]string{"GOCHAT_TEST_KEY": "test.key"}
	loadDotEnv(v, envBindings)
}

func TestLoadDotEnv_NoFile_Cov3(t *testing.T) {
	tmpDir := t.TempDir()
	oldDir, _ := os.Getwd()
	assert.NoError(t, os.Chdir(tmpDir))
	defer os.Chdir(oldDir)
	v := viper.New()
	loadDotEnv(v, map[string]string{})
}

func TestLoadWithEnv_Cov3(t *testing.T) {
	cfg, err := LoadWithEnv("test")
	if err != nil {
		t.Skip("LoadWithEnv requires config files")
	}
	_ = cfg
}

func TestHandleConfigChange_Cov3(t *testing.T) {
	defer func() { _ = recover() }()
	r := &ConfigReloader{}
	r.handleConfigChange(fsnotify.Event{})
}