using System;
using System.IO;
using MelonLoader;
using MelonLoader.Utils;
using Newtonsoft.Json;

namespace ADOFAIRenderer.Core.Data;

internal class GlobalConfig
{
    public string? OutputDirectory { get; set; }
    public string? LastPresetName { get; set; }
    public bool DefaultPresetsInitialized { get; set; }
}

internal static class GlobalSettings
{
    private static string GetGameRootDir()
    {
        var root = MelonEnvironment.GameRootDirectory;
        return string.IsNullOrEmpty(root) ? AppDomain.CurrentDomain.BaseDirectory : root;
    }

    private static string SettingsFilePath =>
        Path.Combine(GetGameRootDir(), "UserData", "ADOFAIRenderer", "global_settings.json");

    public static GlobalConfig Current { get; private set; } = new();

    public static string DefaultOutputDirectory =>
        Path.Combine(GetGameRootDir(), "Render");

    public static string EffectiveOutputDirectory
    {
        get
        {
            if (!string.IsNullOrWhiteSpace(Current.OutputDirectory) && Directory.Exists(Current.OutputDirectory))
            {
                return Current.OutputDirectory;
            }

            return DefaultOutputDirectory;
        }
    }

    static GlobalSettings()
    {
        Load();
    }

    public static void Load()
    {
        try
        {
            if (File.Exists(SettingsFilePath))
            {
                var json = File.ReadAllText(SettingsFilePath);
                Current = JsonConvert.DeserializeObject<GlobalConfig>(json) ?? new GlobalConfig();
                return;
            }
        }
        catch (Exception ex)
        {
            MelonLogger.Warning($"[GlobalSettings] Failed to load global settings: {ex.Message}");
        }

        Current = new GlobalConfig();
    }

    public static void Save()
    {
        try
        {
            var dir = Path.GetDirectoryName(SettingsFilePath);
            if (!string.IsNullOrEmpty(dir) && !Directory.Exists(dir))
            {
                Directory.CreateDirectory(dir);
            }

            var json = JsonConvert.SerializeObject(Current, Formatting.Indented);
            File.WriteAllText(SettingsFilePath, json);
        }
        catch (Exception ex)
        {
            MelonLogger.Warning($"[GlobalSettings] Failed to save global settings: {ex.Message}");
        }
    }
}