namespace Aeshnidae.LootTables;

/// <summary>Settings.json beside the dll. The overrides themselves are their own file.</summary>
public class Settings
{
    public const string FileName = "Settings.json";

    /// <summary>
    /// The overrides: { "Tables": { "WorkmanshipChance.T3_Chances": [ {"Value":"4","Chance":0.2}, ... ] } }.
    /// Written by the staff site; a table not in it is retail.
    /// </summary>
    public string OverridesFile { get; set; } = "overrides.json";

    /// <summary>Every table, retail and current, written after each apply for the staff site to read.</summary>
    public string CatalogFile { get; set; } = "catalog.json";

    private static readonly JsonSerializerOptions JsonOptions = new()
    {
        WriteIndented = true,
        ReadCommentHandling = JsonCommentHandling.Skip,
        AllowTrailingCommas = true,
        PropertyNameCaseInsensitive = true,
    };

    public static Settings Load(string modPath)
    {
        var path = Path.Combine(modPath, FileName);
        try
        {
            if (File.Exists(path))
                return JsonSerializer.Deserialize<Settings>(File.ReadAllText(path), JsonOptions) ?? new Settings();
            var defaults = new Settings();
            File.WriteAllText(path, JsonSerializer.Serialize(defaults, JsonOptions));
            return defaults;
        }
        catch (Exception ex)
        {
            ModManager.Log($"[{Mod.Name}] could not read {path}, using defaults: {ex.Message}", ModManager.LogLevel.Warn);
            return new Settings();
        }
    }

    /// <summary>The overrides as they stand; none (retail everywhere) when the file is missing or broken.</summary>
    public Tables.OverrideFile ReadOverrides(string modPath)
    {
        var path = Path.Combine(modPath, OverridesFile);
        if (!File.Exists(path))
            return new Tables.OverrideFile();
        try
        {
            return JsonSerializer.Deserialize<Tables.OverrideFile>(File.ReadAllText(path), JsonOptions) ?? new Tables.OverrideFile();
        }
        catch (Exception ex)
        {
            ModManager.Log($"[{Mod.Name}] {path} is not valid - no overrides applied: {ex.Message}", ModManager.LogLevel.Error);
            return new Tables.OverrideFile();
        }
    }
}