using Content.Client.Stylesheets;
using Content.Client.UserInterface.Controls;
using Content.Shared.Access.Components;
using Content.Shared.CCVar;
using Content.Shared.StatusIcon;
using Robust.Client.AutoGenerated;
using Robust.Client.GameObjects;
using Robust.Client.UserInterface;
using Robust.Client.UserInterface.Controls;
using Robust.Client.UserInterface.XAML;
using Robust.Shared.Configuration;
using Robust.Shared.Prototypes;
using System.Numerics;

namespace Content.Client.Access.UI;

[GenerateTypedNameReferences]
public sealed partial class AgentIDCardWindow : FancyWindow
{
    [Dependency] private IConfigurationManager _cfgManager = default!;
    [Dependency] private IEntitySystemManager _entitySystem = default!;
    [Dependency] private IPrototypeManager _prototypeManager = default!;
    private readonly SpriteSystem _spriteSystem;

    public event Action<string>? OnNameChanged;
    public event Action<string>? OnJobChanged;

    public event Action<ProtoId<JobIconPrototype>>? OnJobIconChanged;

    public AgentIDCardWindow()
    {
        RobustXamlLoader.Load(this);
        IoCManager.InjectDependencies(this);
        _spriteSystem = _entitySystem.GetEntitySystem<SpriteSystem>();

        NameLineEdit.OnTextEntered += e => CommitName(e.Text);
        NameLineEdit.OnFocusExit += e => CommitName(e.Text);

        JobLineEdit.OnTextEntered += e => CommitJob(e.Text);
        JobLineEdit.OnFocusExit += e => CommitJob(e.Text);

        NameLineEdit.IsValid = s => s.Length <= _cfgManager.GetCVar(CCVars.MaxNameLength);
        JobLineEdit.IsValid = s => s.Length <= _cfgManager.GetCVar(CCVars.MaxIdJobLength);

        AgentTabs.SetTabTitle(0, Loc.GetString("agent-id-ui-tab-settings"));
        AgentTabs.SetTabTitle(1, Loc.GetString("agent-id-ui-tab-job-icons"));
    }

    /// <summary>
    /// Creates the job icons tab.
    /// </summary>
    public void SetAllowedIcons(IReadOnlyList<ProtoId<JobIconGroupPrototype>> jobGroups, ProtoId<JobIconPrototype> currentIcon)
    {
        JobGroupGrid.DisposeAllChildren();
        IconGrid.DisposeAllChildren();

        var jobGroupButtonGroup = new ButtonGroup();
        ContainerButton? firstGroupButton = null;
        IReadOnlyList<ProtoId<JobIconPrototype>>? firstGroupIcons = null;
        ContainerButton? matchingGroupButton = null;
        IReadOnlyList<ProtoId<JobIconPrototype>>? matchingGroupIcons = null;

        foreach (var group in jobGroups)
        {
            if (!_prototypeManager.TryIndex(group, out var groupProto))
                continue;

            var groupButton = CreateGroupButton(groupProto, jobGroupButtonGroup);
            groupButton.OnPressed += _ => SetJobIcons(groupProto.Icons);

            JobGroupGrid.AddChild(groupButton);

            firstGroupButton ??= groupButton;
            firstGroupIcons ??= groupProto.Icons;

            // Prefer the group that actually contains the card's current icon so
            // the opened window shows the relevant set rather than always the first.
            if (matchingGroupButton == null && groupProto.Icons.Contains(currentIcon))
            {
                matchingGroupButton = groupButton;
                matchingGroupIcons = groupProto.Icons;
            }
        }

        var selectedButton = matchingGroupButton ?? firstGroupButton;
        var selectedIcons = matchingGroupIcons ?? firstGroupIcons;

        if (selectedButton == null || selectedIcons == null)
            return;

        selectedButton.Pressed = true;
        SetJobIcons(selectedIcons);
    }

    /// <summary>
    /// Creates the job icon subgroup within the job icons tab.
    /// </summary>
    private void SetJobIcons(IReadOnlyList<ProtoId<JobIconPrototype>> jobIcons)
    {
        IconGrid.DisposeAllChildren();

        foreach (var icon in jobIcons)
        {
            if (!_prototypeManager.TryIndex(icon, out var iconProto))
                continue;

            var texture = _spriteSystem.Frame0(iconProto.Icon);

            // Create new button
            var jobIconButton = new TextureButton
            {
                Access = AccessLevel.Public,
                ToolTip = Loc.GetString(iconProto.JobName),
                TextureNormal = texture,
                SetSize = new Vector2(32, 32),
            };

            // Finish button and add to UI
            jobIconButton.OnPressed += _ => OnJobIconChanged?.Invoke(iconProto.ID);

            IconGrid.AddChild(jobIconButton);
        }
    }

    public void Update(IdCardComponent card)
    {
        var name = card.FullName ?? string.Empty;
        var job = card.LocalizedJobTitle ?? string.Empty;

        NameLineEdit.Text = name;
        CurrentName.Text = name;
        JobLineEdit.Text = job;
        CurrentJob.Text = job;

        var jobIconProto = _prototypeManager.Index(card.JobIcon);
        CurrentJobIcon.Texture = _spriteSystem.Frame0(jobIconProto.Icon);
    }

    private ContainerButton CreateGroupButton(JobIconGroupPrototype groupProto, ButtonGroup buttonGroup)
    {
        var button = new ContainerButton
        {
            Access = AccessLevel.Public,
            Group = buttonGroup,
            ToggleMode = true,
            StyleClasses = { StyleClass.ButtonOpenBoth },
            Margin = new Thickness(8, 2)
        };

        button.AddChild(new BoxContainer
        {
            SeparationOverride = 8,
            Children =
            {
                new TextureRect
                {
                    Texture = _spriteSystem.Frame0(groupProto.Sprite),
                    Stretch = TextureRect.StretchMode.KeepAspectCentered,
                    SetSize = new Vector2(32, 32),
                    VerticalAlignment = VAlignment.Center,
                },
                new Label
                {
                    Text = Loc.GetString(groupProto.GroupName),
                    HorizontalExpand = true,
                    VerticalAlignment = VAlignment.Center,
                },
            },
        });

        return button;
    }

    private void CommitJob(string job)
    {
        OnJobChanged?.Invoke(job);
    }

    private void CommitName(string name)
    {
        OnNameChanged?.Invoke(name);
    }
}