using System.Text.Json;

namespace LehrerApp.Core.Services;

internal class WorkloadSettingsConfig
{
    public double RequiredWeeklyHours { get; set; }
}

/// <summary>Pflichtstundenzahl pro Woche für den Ist-Soll-Abgleich in der Arbeitszeitauswertung (6.3.2).</summary>
public class WorkloadSettingsService
{
    private readonly string _configPath;
    private WorkloadSettingsConfig _config;

    public double RequiredWeeklyHours => _config.RequiredWeeklyHours;

    public WorkloadSettingsService(string appDataPath)
    {
        _configPath = Path.Combine(appDataPath, "workloadsettings.json");
        _config = Load();
    }

    public void SetRequiredWeeklyHours(double hours)
    {
        _config.RequiredWeeklyHours = hours;
        File.WriteAllText(_configPath, JsonSerializer.Serialize(_config));
    }

    private WorkloadSettingsConfig Load()
    {
        try
        {
            if (File.Exists(_configPath))
                return JsonSerializer.Deserialize<WorkloadSettingsConfig>(File.ReadAllText(_configPath))
                       ?? new WorkloadSettingsConfig();
        }
        catch { /* beschädigte Konfiguration -> Standardwert */ }
        return new WorkloadSettingsConfig();
    }
}