// PanelWorldMenu.cs
// A custom UI panel (CreatePanel) shown in WORLDSPACE: it stands in the world on a flat surface, so it works in VR as
// well as on desktop and mobile. Point it at an object to have it float above (Kiosk), or leave Kiosk empty and it
// stands at a spot you set. It has buttons, a per-player volume slider, a shared lights toggle, a category dropdown and
// an inventory grid of things to pick. Everything a player does comes back here as that player (PanelEvent.Username).
//
// It can also show a live picture: paint a script canvas (CreateCanvas) on an object, slot that object in SignObject,
// and the panel mirrors it live with AddLiveTexture.
using System.Collections;
using System.Collections.Generic;
using IHXR.Simulation;

public class PanelWorldMenu : ScriptBase
{
    [Header("Where it stands")]
    [Tooltip("Float the panel above this object. Leave empty to stand it at Position below.")]
    public SceneObject Kiosk;
    public Vector3 Position = new Vector3(0f, 1.6f, 0f);
    [Tooltip("Local offset above the Kiosk object (metres).")]
    public Vector3 AboveKiosk = new Vector3(0f, 1.4f, 0f);
    [Range(0.3f, 6f)]
    public float WidthMeters = 1.4f;
    [Tooltip("Turn to face each viewer (good for a free-standing sign).")]
    public bool FaceViewer = true;

    [Header("Look")]
    public string Title = "Kiosk";
    public Color TitleColor = new Color(0.8f, 0.95f, 1f);
    public PanelFont Font = PanelFont.Rounded;
    public Color AccentColor = new Color(0.3f, 0.85f, 1f);

    [Header("Items to pick")]
    public List<TextureItem> ItemIcons = new List<TextureItem>();
    public List<string> ItemNames = new List<string>();

    [Header("Live picture (optional)")]
    [Tooltip("An object a script canvas (CreateCanvas) is painted on: the panel mirrors it live.")]
    public SceneObject SignObject;

    private ScriptPanel panel;
    private PanelInventory grid;
    private PanelToggle lights;

    public override void Start()
    {
        panel = CreatePanel("kiosk", 420);
        panel.SetTitle(Title).SetTitleStyle(TitleColor, 24)
             .SetFont(Font, 16)
             .SetAccentColor(AccentColor)
             .SetLayout(1, 8, 16);

        // Stand it in the world.
        if (Kiosk != null && !Kiosk.IsNull)
            panel.PlaceOnObject(Kiosk, AboveKiosk, WidthMeters, FaceViewer);
        else
            panel.PlaceInWorld(Position, WidthMeters, FaceViewer);

        panel.AddButton("Say hello", e => SendScriptChat(e.Username + " waved from the kiosk."));

        panel.AddSlider("Volume", 0f, 100f, 70f, e => Log(e.Username + " set volume " + (int)e.Value), 1f);

        lights = panel.AddToggle("Lights on", true, e => SendScriptChat("Lights turned " + (e.IsOn ? "on" : "off") + " by " + e.Username));

        panel.AddDropdown("Category", new List<string> { "Weapons", "Tools", "Wearables" }, 0,
            e => Log(e.Username + " browsing " + e.Text));

        // A live picture of a painted object (optional).
        if (SignObject != null && !SignObject.IsNull)
            panel.AddLiveTexture(SignObject, 150);

        // An inventory grid: a cell per item. Clicking one comes back as that player with the cell index.
        panel.AddLabel("Pick one:");
        grid = panel.AddInventory(4, 74, OnPick);
        RefreshGrid();

        panel.ShowToEveryone();
    }

    private void RefreshGrid()
    {
        var cells = new List<PanelCell>();
        for (int i = 0; i < ItemNames.Count; i++)
        {
            TextureItem icon = i < ItemIcons.Count ? ItemIcons[i] : null;
            cells.Add(new PanelCell(ItemNames[i], icon));
        }
        if (cells.Count == 0)
            cells.Add(new PanelCell("Add items", null));
        grid.SetCells(cells);
    }

    private void OnPick(PanelEvent e)
    {
        // e.Index is the cell, e.Text its label, e.Username who picked.
        if (e.Index < 0 || e.Index >= ItemNames.Count) return;
        SendScriptChat(e.Username + " picked " + e.Text + " from the kiosk.");
    }
}