using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Interface.GameFonts;
using Dalamud.Plugin;
using FFXIVClientStructs.FFXIV.Client.UI.Agent;
using KamiLib.Classes;
using KamiLib.CommandManager;
using KamiLib.Window;
using Mappy.Controllers;
using Mappy.Data;
using Mappy.Windows;

namespace Mappy;

public sealed class MappyPlugin : IDalamudPlugin
{
    private static bool _minimapPushedPadding;

    public MappyPlugin(IDalamudPluginInterface pluginInterface)
    {
        pluginInterface.Create<Service>();

        System.LargeAxisFontHandle = Service.PluginInterface.UiBuilder.FontAtlas.NewGameFontHandle(new GameFontStyle
        {
            SizePt = 72.0f,
            FamilyAndSize = GameFontFamilyAndSize.Axis36,
            Italic = true,
            BaseSkewStrength = 16f,
        });

        System.SystemConfig = SystemConfig.Load();
        System.IconConfig = IconConfig.Load();
        System.FlagConfig = FlagConfig.Load();

        System.Teleporter = new Teleporter(Service.PluginInterface);

        System.CommandManager = new CommandManager(Service.PluginInterface, "hsmappy");

        System.MapRenderer = new MapRenderer.MapRenderer();

        System.ConfigWindow = new ConfigurationWindow();
        System.MapWindow = new MapWindow();
        System.MinimapWindow = new MinimapWindow();

        // Push zero padding before window system draw so the first window (minimap) gets it.
        Service.PluginInterface.UiBuilder.Draw += SetMinimapZeroPadding;
        System.WindowManager = new WindowManager(Service.PluginInterface);
        Service.PluginInterface.UiBuilder.Draw += PopMinimapPadding;

        // Minimap is added first so it's drawn first and receives the zero padding.
        System.WindowManager.AddWindow(System.MinimapWindow, WindowFlags.RequireLoggedIn);
        System.WindowManager.AddWindow(System.ConfigWindow, WindowFlags.IsConfigWindow | WindowFlags.RequireLoggedIn);
        System.WindowManager.AddWindow(System.MapWindow, WindowFlags.RequireLoggedIn);

        if (System.SystemConfig.ShowMinimap)
            System.MinimapWindow.UnCollapseOrShow();

        // PopMinimapPadding already registered above (after WindowManager)

        System.FlagController = new FlagController();
        System.AreaMapController = new AddonAreaMapController();
        System.IntegrationsController = new IntegrationsController();

        Service.PluginInterface.UiBuilder.OpenMainUi += OpenMapWindow;

        System.CommandManager.RegisterCommand(new ToggleCommandHandler
        {
            BaseActivationPath = "/fatelist",
            EnableDelegate = _ => System.WindowManager.OpenOrCreateUnique<FateListWindow>(WindowFlags.OpenImmediately | WindowFlags.RequireLoggedIn),
            DisableDelegate = _ => System.WindowManager.GetWindow<FateListWindow>()?.Close(),
            ToggleDelegate = _ => System.WindowManager.GetWindow<FateListWindow>()?.UnCollapseOrToggle(),
        });

        System.CommandManager.RegisterCommand(new ToggleCommandHandler
        {
            BaseActivationPath = "/questlist",
            EnableDelegate = _ => System.WindowManager.OpenOrCreateUnique<QuestListWindow>(WindowFlags.OpenImmediately | WindowFlags.RequireLoggedIn),
            DisableDelegate = _ => System.WindowManager.GetWindow<QuestListWindow>()?.Close(),
            ToggleDelegate = _ => System.WindowManager.GetWindow<QuestListWindow>()?.UnCollapseOrToggle(),
        });

        System.CommandManager.RegisterCommand(new ToggleCommandHandler
        {
            BaseActivationPath = "/flaglist",
            EnableDelegate = _ => System.WindowManager.OpenOrCreateUnique<FlagHistoryWindow>(WindowFlags.OpenImmediately | WindowFlags.RequireLoggedIn),
            DisableDelegate = _ => System.WindowManager.GetWindow<FlagHistoryWindow>()?.Close(),
            ToggleDelegate = _ => System.WindowManager.GetWindow<FlagHistoryWindow>()?.UnCollapseOrToggle(),
        });
    }

    private unsafe void OpenMapWindow() => AgentMap.Instance()->Show();

    /// <summary>
    /// Called first each frame so the first window (minimap) gets zero padding when visible.
    /// </summary>
    private static void SetMinimapZeroPadding()
    {
        if (System.SystemConfig.ShowMinimap && IntegrationsController.ShouldShowMinimap()) {
            ImGui.PushStyleVar(ImGuiStyleVar.WindowPadding, new Vector2(0f, 0f));
            _minimapPushedPadding = true;
        }
    }

    /// <summary>
    /// Called after window system draw to pop the padding we pushed (keeps style stack balanced).
    /// </summary>
    private static void PopMinimapPadding()
    {
        if (_minimapPushedPadding) {
            ImGui.PopStyleVar();
            _minimapPushedPadding = false;
        }
    }

    public void Dispose()
    {
        Service.PluginInterface.UiBuilder.Draw -= SetMinimapZeroPadding;
        Service.PluginInterface.UiBuilder.Draw -= PopMinimapPadding;
        System.MapWindow.OnClose();
        System.WindowManager.Dispose();
        System.IntegrationsController.Dispose();
        System.AreaMapController.Dispose();
        System.FlagController.Dispose();
        System.MapRenderer.Dispose();

        Service.PluginInterface.UiBuilder.OpenMainUi -= OpenMapWindow;
    }
}