using System.IO;

namespace Housing.Services;

public static class HousingSettingsPaths
{
    public static string GetIniPath(string fileName)
    {
        return GetIniPath(
            fileName,
            Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory),
            AppContext.BaseDirectory,
            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData));
    }

    internal static string GetIniPath(string fileName, string desktopDirectory,
        string applicationDirectory, string localApplicationData)
    {
        if (string.IsNullOrWhiteSpace(desktopDirectory))
        {
            throw new DirectoryNotFoundException("사용자 바탕화면 폴더를 찾을 수 없습니다.");
        }

        var settingsDirectory = Path.Combine(desktopDirectory, "Housing");
        Directory.CreateDirectory(settingsDirectory);
        var settingsPath = Path.Combine(settingsDirectory, fileName);
        if (File.Exists(settingsPath))
        {
            return settingsPath;
        }

        // Older versions saved edited judgement limits separately from the bundled INI.
        var legacyInspectionPath = Path.Combine(localApplicationData, "AMO Housing", fileName);
        var sourcePath = fileName == "InspectionSettings.ini" && File.Exists(legacyInspectionPath)
            ? legacyInspectionPath
            : Path.Combine(applicationDirectory, fileName);

        if (File.Exists(sourcePath))
        {
            try
            {
                File.Copy(sourcePath, settingsPath, overwrite: false);
            }
            catch (IOException ex) when ((ex.HResult & 0xFFFF) is 80 or 183 && File.Exists(settingsPath))
            {
                // Another instance may have initialized the same file first.
            }
        }

        return settingsPath;
    }
}