using System.Collections.Immutable;
using System.Drawing;
using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Interface;
using Dalamud.Interface.Utility;
using Dalamud.Interface.Utility.Raii;
using KamiLib.Window;
using Mappy.Data;

namespace Mappy.Windows;

public class FlagHistoryWindow : Window
{
    private static float FlagElementHeight => 95.0f * ImGuiHelpers.GlobalScale;

    public FlagHistoryWindow() : base("HSMappy Flag History Window", new Vector2(400.0f, 400.0f))
    {
        AdditionalInfoTooltip = "Shows a list of all recently used flags";
    }

    protected override void DrawContents()
    {
        ImGuiClip.ClippedDraw(System.FlagConfig.FlagHistory.ToImmutableList(), DrawFlag, FlagElementHeight);
    }

    private void DrawFlag(Flag flag)
    {
        using var id = ImRaii.PushId(flag.GetIdString());

        using (ImRaii.Child("flag_container", new Vector2(ImGui.GetContentRegionAvail().X, FlagElementHeight - ImGui.GetStyle().FramePadding.Y * 2.0f))) {
            using (ImRaii.Child("flag_image_container", new Vector2(155.0f * ImGuiHelpers.GlobalScale, ImGui.GetContentRegionAvail().Y))) {
                DrawFlagImage(flag);
            }

            ImGui.SameLine();

            using (ImRaii.Child("flag_contents_container", ImGui.GetContentRegionAvail())) {
                DrawFlagData(flag);
                DrawButtons(flag);
            }
        }

        ImGui.Spacing();
    }

    private void DrawFlagImage(Flag flag)
    {
        var texture = flag.GetMapTexture();
        if (texture is not null) {
            ImGui.Image(texture.Handle, ImGui.GetContentRegionAvail(), new Vector2(0.15f, 0.15f), new Vector2(0.85f, 0.85f));
        }
        else {
            ImGuiHelpers.ScaledDummy(ImGui.GetContentRegionAvail());
        }
    }

    private void DrawFlagData(Flag flag)
    {
        ImGui.Text(flag.GetMap().PlaceName.Value.Name.ExtractText());

        ImGui.SameLine();
        var flagCoordinate = flag.GetMapCoordinate();
        var coordinateString = $"{flagCoordinate.X:F1}, {flagCoordinate.Y:F1}";
        var coordinateStringSize = ImGui.CalcTextSize(coordinateString);
        ImGui.SetCursorPosX(ImGui.GetContentRegionMax().X - coordinateStringSize.X);
        ImGui.Text(coordinateString);

        ImGui.TextColored(KnownColor.Gray.Vector().Lighten(0.20f), flag.GetTerritoryType().PlaceNameZone.Value.Name.ExtractText());

        if (flag.IsFlagSet()) {
            ImGui.Spacing();
            ImGui.TextColored(KnownColor.ForestGreen.Vector().Lighten(0.40f), "Flag is currently active");
        }
    }

    private void DrawButtons(Flag flag)
    {
        var buttonSize = ImGuiHelpers.ScaledVector2(100.0f, 24.0f);

        ImGui.SetCursorPos(new Vector2(0.0f, ImGui.GetContentRegionMax().Y - buttonSize.Y));
        if (ImGui.Button("Focus", buttonSize)) {
            flag.Focus();
        }

        ImGui.SetCursorPos(ImGui.GetContentRegionMax() - buttonSize);
        using (ImRaii.Disabled(flag.IsFlagSet())) {
            if (ImGui.Button("Place", buttonSize)) {
                flag.PlaceFlag();
            }
        }
    }

    public override void OnClose()
    {
        System.WindowManager.RemoveWindow(this);
    }
}