using System.IO;
using NeoModLoader.api;
using NeoModLoader.constants;
using NeoModLoader.services;

namespace IdleSpectator;

/// <summary>
/// NML ModConfig accessors for Idle Spectator.
/// </summary>
public static class ModSettings
{
    public const string GroupId = "Spectator";
    public const string EnabledId = "enabled";
    public const string ShowWatchReasonsId = "show_watch_reasons";
    public const string ShowDossierCaptionId = "show_dossier_caption";
    public const string ChronicleEnabledId = "chronicle_enabled";
    public const string DebugStateProbeId = "debug_state_probe";
    public const string GravestonesEnabledId = "gravestones_enabled";
    public const string GravestoneMaxStacksId = "gravestone_max_stacks";
    public const string GravestoneTtlSecondsId = "gravestone_ttl_seconds";

    public const int DefaultGravestoneMaxStacks = 1000;
    public const int DefaultGravestoneTtlSeconds = 300;

    private static ModConfig _config;

    public static bool Enabled => GetBool(EnabledId, defaultValue: true);

    public static bool ShowWatchReasons => GetBool(ShowWatchReasonsId, defaultValue: true);

    public static bool ShowDossierCaption => GetBool(ShowDossierCaptionId, defaultValue: true);

    public static bool ChronicleEnabled => GetBool(ChronicleEnabledId, defaultValue: true);

    public static bool DebugStateProbe => GetBool(DebugStateProbeId, defaultValue: true);

    public static bool GravestonesEnabled => GetBool(GravestonesEnabledId, defaultValue: true);

    public static int GravestoneMaxStacks =>
        GetInt(GravestoneMaxStacksId, DefaultGravestoneMaxStacks, min: 0, max: 2000);

    public static int GravestoneTtlSeconds =>
        GetInt(GravestoneTtlSecondsId, DefaultGravestoneTtlSeconds, min: 30, max: 1800);

    public static ModConfig Load(ModDeclare declare)
    {
        string persistentPath = Path.Combine(Paths.ModsConfigPath, declare.UID + ".config");
        ModConfig persistent = new ModConfig(persistentPath, pIsPersistent: true);
        string defaultsPath = Path.Combine(declare.FolderPath, Paths.ModDefaultConfigFileName);
        if (File.Exists(defaultsPath))
        {
            ModConfig defaults = new ModConfig(defaultsPath);
            persistent.MergeWith(defaults);
        }

        _config = persistent;
        return _config;
    }

    /// <summary>NML config callback: IdleSpectator.ModSettings:OnEnabledChanged</summary>
    public static void OnEnabledChanged(bool enabled)
    {
        if (!enabled && SpectatorMode.Active)
        {
            SpectatorMode.SetActive(false);
            LogService.LogInfo("[IdleSpectator] Disabled via settings");
        }

        if (!enabled)
        {
            GraveMarkers.Clear();
        }
    }

    public static bool TrySetBool(string id, bool value)
    {
        if (_config == null || string.IsNullOrEmpty(id))
        {
            return false;
        }

        try
        {
            ModConfigItem item = _config[GroupId][id];
            item.SetValue(value);
            // Ensure settings callbacks apply even if NML does not fire them from SetValue.
            if (id == EnabledId)
            {
                OnEnabledChanged(value);
            }

            return true;
        }
        catch (System.Exception ex)
        {
            LogService.LogInfo($"[IdleSpectator] TrySetBool failed for {id}: {ex.Message}");
            return false;
        }
    }

    public static bool TrySetInt(string id, int value)
    {
        if (_config == null || string.IsNullOrEmpty(id))
        {
            return false;
        }

        try
        {
            ModConfigItem item = _config[GroupId][id];
            item.SetValue(value);
            return true;
        }
        catch (System.Exception ex)
        {
            LogService.LogInfo($"[IdleSpectator] TrySetInt failed for {id}: {ex.Message}");
            return false;
        }
    }

    private static bool GetBool(string id, bool defaultValue)
    {
        if (_config == null)
        {
            return defaultValue;
        }

        try
        {
            ModConfigItem item = _config[GroupId][id];
            object value = item.GetValue();
            if (value is bool b)
            {
                return b;
            }
        }
        catch
        {
            // Fall through to default.
        }

        return defaultValue;
    }

    private static int GetInt(string id, int defaultValue, int min, int max)
    {
        if (_config == null)
        {
            return UnityEngine.Mathf.Clamp(defaultValue, min, max);
        }

        try
        {
            ModConfigItem item = _config[GroupId][id];
            object value = item.GetValue();
            if (value is int i)
            {
                return UnityEngine.Mathf.Clamp(i, min, max);
            }

            if (value is long l)
            {
                return UnityEngine.Mathf.Clamp((int)l, min, max);
            }

            if (value is float f)
            {
                return UnityEngine.Mathf.Clamp(UnityEngine.Mathf.RoundToInt(f), min, max);
            }
        }
        catch
        {
            // Fall through to default.
        }

        return UnityEngine.Mathf.Clamp(defaultValue, min, max);
    }
}