using System.Drawing;
using System.Linq;
using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Interface;
using Dalamud.Interface.Utility;
using Dalamud.Interface.Utility.Raii;
using FFXIVClientStructs.FFXIV.Client.UI.Agent;
using KamiLib.Classes;
using KamiLib.Window;
using Lumina.Excel.Sheets;
using Mappy.Classes;
using Mappy.Extensions;
using Map = FFXIVClientStructs.FFXIV.Client.Game.UI.Map;

namespace Mappy.Windows;

public class QuestListWindow : Window
{
    private readonly TabBar tabBar = new("questListTabBar", [
        new AcceptedQuestsTabItem(),
        new UnacceptedQuestsTabItem(),
    ]);

    public QuestListWindow() : base("HSMappy Quest List Window", new Vector2(300.0f, 500.0f))
    {
        AdditionalInfoTooltip = "Shows Quests for the zone you are currently in";
    }

    protected override void DrawContents()
    {
        using var child = ImRaii.Child("quest_list_scrollable", ImGui.GetContentRegionAvail());
        if (!child) return;

        tabBar.Draw();
    }

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

public unsafe class UnacceptedQuestsTabItem : ITabItem
{
    private const float ElementHeight = 48.0f;

    public string Name => "Unaccepted Quests";

    public bool Disabled => false;

    public void Draw()
    {
        if (Map.Instance()->UnacceptedQuestMarkers.Count > 0) {
            foreach (var quest in Map.Instance()->UnacceptedQuestMarkers) {
                var questData = Service.DataManager.GetExcelSheet<Quest>().GetRow(quest.ObjectiveId + 65536u);

                foreach (var marker in quest.MarkerData) {
                    var cursorStart = ImGui.GetCursorScreenPos();
                    if (ImGui.Selectable($"##{quest.ObjectiveId}_Selectable_{marker.LevelId}", false, ImGuiSelectableFlags.None,
                        new Vector2(ImGui.GetContentRegionAvail().X, ElementHeight * ImGuiHelpers.GlobalScale))) {
                        System.IntegrationsController.OpenMap(marker.MapId);
                        System.SystemConfig.FollowPlayer = false;

                        var mapOffsetVector = DrawHelpers.GetMapOffsetVector();
                        System.MapRenderer.DrawOffset = -marker.Position.AsMapVector() * AgentMap.Instance()->SelectedMapSizeFactorFloat + mapOffsetVector;
                    }

                    ImGui.SetCursorScreenPos(cursorStart);
                    ImGui.Image(Service.TextureProvider.GetFromGameIcon(marker.IconId).GetWrapOrEmpty().Handle, ImGuiHelpers.ScaledVector2(ElementHeight, ElementHeight));

                    ImGui.SameLine();
                    var text = $"Lv. {questData.ClassJobLevel.First()} {quest.Label}";

                    ImGui.SetCursorPosY(ImGui.GetCursorPosY() + ElementHeight * ImGuiHelpers.GlobalScale / 2.0f - ImGui.CalcTextSize(text).Y / 2.0f);
                    ImGui.Text(text);
                }
            }
        }
        else {
            const string text = "No quests available";
            var textSize = ImGui.CalcTextSize(text);
            ImGui.SetCursorPosX(ImGui.GetContentRegionAvail().X / 2.0f - textSize.X / 2.0f);
            ImGui.SetCursorPosY(ImGui.GetContentRegionAvail().Y / 2.0f - textSize.Y / 2.0f);
            ImGui.TextColored(KnownColor.Orange.Vector(), text);
        }
    }
}

public unsafe class AcceptedQuestsTabItem : ITabItem
{
    private const float ElementHeight = 48.0f;

    public string Name => "Accepted Quests";

    public bool Disabled => false;

    public void Draw()
    {
        if (AnyActiveQuests()) {
            foreach (var quest in Map.Instance()->QuestMarkers) {
                if (quest.ObjectiveId is 0) continue;

                var questData = Service.DataManager.GetExcelSheet<Quest>().GetRow(quest.ObjectiveId + 65536u);

                var index = 0;
                foreach (var marker in quest.MarkerData) {
                    var cursorStart = ImGui.GetCursorScreenPos();
                    if (ImGui.Selectable($"##{quest.ObjectiveId}_Selectable_{marker.LevelId}_{index++}", false, ImGuiSelectableFlags.None,
                        new Vector2(ImGui.GetContentRegionAvail().X, ElementHeight * ImGuiHelpers.GlobalScale))) {
                        System.IntegrationsController.OpenMap(marker.MapId);
                        System.SystemConfig.FollowPlayer = false;
                        System.MapRenderer.DrawOffset = -marker.Position.AsMapVector();
                    }

                    var iconId = marker.IconId switch
                    {
                        >= 60483 and <= 60494 => DrawHelpers.QuestionMarkIcon,
                        _ => marker.IconId,
                    };

                    ImGui.SetCursorScreenPos(cursorStart);
                    ImGui.Image(Service.TextureProvider.GetFromGameIcon(iconId).GetWrapOrEmpty().Handle, ImGuiHelpers.ScaledVector2(ElementHeight, ElementHeight));

                    ImGui.SameLine();
                    var text = $"Lv. {questData.ClassJobLevel.First()} {quest.Label}";

                    ImGui.SetCursorPosY(ImGui.GetCursorPosY() + ElementHeight * ImGuiHelpers.GlobalScale / 2.0f - ImGui.CalcTextSize(text).Y / 2.0f);
                    ImGui.Text(text);
                }
            }
        }
        else {
            const string text = "No quests available";
            var textSize = ImGui.CalcTextSize(text);
            ImGui.SetCursorPosX(ImGui.GetContentRegionAvail().X / 2.0f - textSize.X / 2.0f);
            ImGui.SetCursorPosY(ImGui.GetContentRegionAvail().Y / 2.0f - textSize.Y / 2.0f);
            ImGui.TextColored(KnownColor.Orange.Vector(), text);
        }
    }

    private static bool AnyActiveQuests()
    {
        foreach (var questMarker in Map.Instance()->QuestMarkers) {
            if (questMarker.ObjectiveId is not 0) return true;
        }

        return false;
    }
}