using System;
using System.IO;
using System.Text.Json;
using Lagerprogramm.Models;

namespace Lagerprogramm.Services;

public class JsonDataService
{
    private readonly string _filePath;
    private readonly JsonSerializerOptions _options = new() { WriteIndented = true };

    public JsonDataService(string filePath) => _filePath = filePath;

    public AppData Load()
    {
        if (!File.Exists(_filePath))
        {
            var defaultData = new AppData();
            Save(defaultData);
            return defaultData;
        }
        var json = File.ReadAllText(_filePath);
        return JsonSerializer.Deserialize<AppData>(json, _options) ?? new AppData();
    }

    public void Save(AppData data)
    {
        var dir = Path.GetDirectoryName(_filePath);
        if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
            Directory.CreateDirectory(dir);
        File.WriteAllText(_filePath, JsonSerializer.Serialize(data, _options));
    }
}