using System.Text.Json;
using RemoteAccessPlatform.Windows.Contracts;
using RemoteAccessPlatform.Windows.Models;

namespace RemoteAccessPlatform.Windows.Settings;

public sealed class JsonLocalSettingsStore : ILocalSettingsStore
{
    private static readonly JsonSerializerOptions SerializerOptions = new(JsonSerializerDefaults.Web)
    {
        WriteIndented = true
    };

    public async Task<LocalClientSettings> LoadAsync(CancellationToken cancellationToken)
    {
        if (!File.Exists(StoragePathResolver.SettingsFilePath))
        {
            return new LocalClientSettings();
        }

        await using FileStream stream = File.OpenRead(StoragePathResolver.SettingsFilePath);
        LocalClientSettings? settings = await JsonSerializer.DeserializeAsync<LocalClientSettings>(stream, SerializerOptions, cancellationToken);
        return settings ?? new LocalClientSettings();
    }

    public async Task SaveAsync(LocalClientSettings settings, CancellationToken cancellationToken)
    {
        StoragePathResolver.EnsureRoot();
        await using FileStream stream = File.Create(StoragePathResolver.SettingsFilePath);
        await JsonSerializer.SerializeAsync(stream, settings, SerializerOptions, cancellationToken);
    }
}