package main

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

	"github.com/stretchr/testify/assert"
)

func TestHomeDirectoryPatternExpansion(t *testing.T) {
	testDir := getTestSubDir(t)

	// Ensure we're working within the project directory
	ensureInProjectDir(t, testDir)

	// Change to test directory
	originalDir, _ := os.Getwd()
	defer os.Chdir(originalDir)
	os.Chdir(testDir)

	// Get the actual home directory
	homeDir, err := os.UserHomeDir()
	assert.NoError(t, err)

	// Create a test directory in the home folder
	testHomeDir := filepath.Join(homeDir, "synclib_test")
	err = os.MkdirAll(testHomeDir, 0755)
	assert.NoError(t, err)
	defer os.RemoveAll(testHomeDir) // Cleanup

	// Create a test file in the home directory
	testFile := filepath.Join(testHomeDir, "testhome.csv")
	err = os.WriteFile(testFile, []byte("test content"), 0644)
	assert.NoError(t, err)

	// Test the pattern with ~/ that should match the file
	pattern := "~/synclib_test/testhome.csv"
	links, err := ExpandPattern(pattern, testDir, "target.csv")

	// This should work but currently fails due to the bug
	assert.NoError(t, err)
	assert.Equal(t, 1, len(links), "Pattern should match exactly 1 file")

	if len(links) > 0 {
		assert.Contains(t, links[0].Source, "testhome.csv")
		assert.Equal(t, "target.csv", links[0].Target)
	}
}