using UI;
using UI.Builder;
using UI.Map;
using UnityEngine;
using UnityEngine.UI;

namespace S3.Modules.Popout {

    // Adds a "Pop Out / Re-attach" button to the in-game map window title bar
    // using the game's own UIPanel / UIPanelBuilder system so it matches the
    // factory UI styling exactly.
    internal static class MapWindowButton {

        private static Button?  s_button;

        internal static void TryInstall() {
            if (s_button != null) return;

            var win = PanelFinder.GetMapWindowUI();
            // Don't install until the map has been opened at least once.
            if (win == null || !win.IsShown) return;

            // Already added — recover reference after a hot-reload
            var existing = win.transform.Find("RRPopout_Btn");
            if (existing != null) {
                s_button = existing.GetComponentInChildren<Button>();
                return;
            }

            var pwc = UnityEngine.Object.FindObjectOfType<ProgrammaticWindowCreator>();
            if (pwc == null) return;

            // Container rect in the title bar — same y-level as the close button.
            var container = new GameObject("RRPopout_Btn").AddComponent<RectTransform>();
            container.SetParent(win.transform, false);
            container.SetInsetAndSizeFromParentEdge(RectTransform.Edge.Top,   3f, 22f);
            container.SetInsetAndSizeFromParentEdge(RectTransform.Edge.Right, 40f, 70f);

            // Let the game's UIPanel system create a native-styled button.
            UIPanel.Create(container, pwc.builderAssets, builder => {
                var el = builder.AddButtonCompact("Pop Out", PopoutModule.Toggle);
                s_button = el?.RectTransform?.GetComponentInChildren<Button>();
            });
        }

        internal static void UpdateLabel(bool isPopped) {
            if (s_button == null) return;
            // UIPanelBuilder puts the label in a TMP_Text child of the button.
            var label = s_button.GetComponentInChildren<TMPro.TMP_Text>();
            if (label != null)
                label.text = isPopped ? "Re-attach" : "Pop Out";
        }
    }
}