#if UNITY_EDITOR
using TMPro;
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;

namespace MegaKoop.EditorTools
{
    internal sealed class LobbyPanelBuilder
    {
        private readonly Transform _parent;

        internal LobbyPanelBuilder(Transform parent)
        {
            _parent = parent;
        }

        internal GameObject Build()
        {
            var panelLobby = UGUIBuilderUtils.CreatePanel(_parent, "Panel_Lobby", new Vector2(1100, 820));
            panelLobby.SetActive(false);

            var lobbyContainer = UGUIBuilderUtils.CreateVerticalGroup(
                panelLobby.transform,
                "Lobby_VLayout",
                16f,
                TextAnchor.UpperCenter,
                new RectOffset(24, 24, 24, 24));

            var lobbyHeader = UGUIBuilderUtils.CreateHorizontalGroup(
                lobbyContainer.transform,
                "Lobby_Header",
                10f,
                TextAnchor.MiddleCenter,
                new RectOffset(0, 0, 0, 10));
            UGUIBuilderUtils.CreateText(lobbyHeader.transform, "Text_LobbyTitle", "MULTIPLAYER LOBBY", 36, TextAnchor.MiddleLeft, new Color(0.7f, 1f, 0.7f), FontStyles.Bold);
            UGUIBuilderUtils.CreateText(lobbyHeader.transform, "Text_Status", "OFFLINE", 18, TextAnchor.MiddleRight, new Color(0.8f, 0.8f, 0.8f), FontStyles.Bold);

            var codeGroup = UGUIBuilderUtils.CreateVerticalGroup(
                lobbyContainer.transform,
                "Lobby_CodeGroup",
                8f,
                TextAnchor.MiddleCenter,
                new RectOffset(10, 10, 10, 10));
            UGUIBuilderUtils.CreateText(codeGroup.transform, "Text_LobbyCodeLabel", "LOBBY CODE", 16, TextAnchor.MiddleCenter, new Color(0.8f, 0.8f, 0.8f), FontStyles.Bold);
            var codeRow = UGUIBuilderUtils.CreateHorizontalGroup(
                codeGroup.transform,
                "Lobby_CodeRow",
                10f,
                TextAnchor.MiddleCenter,
                new RectOffset(0, 0, 0, 0));
            UGUIBuilderUtils.CreateText(codeRow.transform, "Text_LobbyCodeValue", "------", 44, TextAnchor.MiddleCenter, new Color(0.7f, 1f, 0.7f), FontStyles.Bold);
            UGUIBuilderUtils.CreateMenuButton(codeRow.transform, "Button_CopyCode", "COPY");
            UGUIBuilderUtils.CreateText(codeGroup.transform, "Text_LobbyCodeHint", "Share this code with friends to invite them", 12, TextAnchor.MiddleCenter, new Color(0.8f, 0.8f, 0.8f), FontStyles.Normal);

            var tabs = UGUIBuilderUtils.CreateHorizontalGroup(
                lobbyContainer.transform,
                "Lobby_Tabs",
                0f,
                TextAnchor.MiddleCenter,
                new RectOffset(0, 0, 0, 0));
            UGUIBuilderUtils.CreateMenuButton(tabs.transform, "Button_HostTab", "HOST LOBBY");
            UGUIBuilderUtils.CreateMenuButton(tabs.transform, "Button_JoinTab", "JOIN LOBBY");

            var joinGroup = UGUIBuilderUtils.CreateVerticalGroup(
                lobbyContainer.transform,
                "Group_Join",
                10f,
                TextAnchor.UpperCenter,
                new RectOffset(10, 10, 10, 10));
            var joinRow = UGUIBuilderUtils.CreateHorizontalGroup(
                joinGroup.transform,
                "Join_Row",
                10f,
                TextAnchor.MiddleCenter,
                new RectOffset(0, 0, 0, 0));
            UGUIBuilderUtils.CreateInputField(joinRow.transform, "Input_LobbyCode", "Enter 6-digit code...");
            UGUIBuilderUtils.CreateMenuButton(joinGroup.transform, "Button_Connect", "CONNECT");

            var hostGroup = UGUIBuilderUtils.CreateVerticalGroup(
                lobbyContainer.transform,
                "Group_Host",
                10f,
                TextAnchor.UpperCenter,
                new RectOffset(10, 10, 10, 10));
            UGUIBuilderUtils.CreateDropdown(hostGroup.transform, "Dropdown_MaxPlayers", new[] { "2", "3", "4", "8" });
            UGUIBuilderUtils.CreateToggle(hostGroup.transform, "Toggle_PublicLobby", "Public", true);
            UGUIBuilderUtils.CreateMenuButton(hostGroup.transform, "Button_CreateLobby", "CREATE LOBBY");

            var playersHeader = UGUIBuilderUtils.CreateHorizontalGroup(
                lobbyContainer.transform,
                "Players_Header",
                10f,
                TextAnchor.MiddleLeft,
                new RectOffset(0, 0, 0, 0));
            UGUIBuilderUtils.CreateText(playersHeader.transform, "Text_PlayersTitle", "PLAYERS", 20, TextAnchor.MiddleLeft, Color.white, FontStyles.Bold);
            UGUIBuilderUtils.CreateText(playersHeader.transform, "Text_PlayerCount", "0/4", 18, TextAnchor.MiddleRight, new Color(0.7f, 1f, 0.7f), FontStyles.Bold);

            var scroll = UGUIBuilderUtils.CreateScrollList(
                lobbyContainer.transform,
                out var playersContent,
                "Scroll_Players",
                "Viewport",
                "Content_PlayersList");
            UGUIBuilderUtils.CreateText(lobbyContainer.transform, "Empty_Players", "Waiting for players...", 16, TextAnchor.MiddleCenter, new Color(0.8f, 0.8f, 0.8f), FontStyles.Italic);

            var template = new GameObject("PlayerItemTemplate", typeof(RectTransform), typeof(HorizontalLayoutGroup));
            template.transform.SetParent(playersContent, false);
            var hlg = template.GetComponent<HorizontalLayoutGroup>();
            hlg.childAlignment = TextAnchor.MiddleLeft;
            hlg.spacing = 12;
            hlg.childControlWidth = false;
            hlg.childForceExpandWidth = true;
            var avatar = UGUIBuilderUtils.CreateImage(template.transform, "Image_Avatar", new Color(0.3f, 0.6f, 0.3f));
            var name = UGUIBuilderUtils.CreateText(template.transform, "Text_PlayerName", "Player", 18, TextAnchor.MiddleLeft, Color.white, FontStyles.Bold);
            var status = UGUIBuilderUtils.CreateText(template.transform, "Text_PlayerStatus", "NOT READY", 14, TextAnchor.MiddleRight, new Color(0.8f, 0.8f, 0.8f), FontStyles.Bold);
            ((RectTransform)avatar.transform).sizeDelta = new Vector2(40, 40);
            template.SetActive(false);

            var hostControls = UGUIBuilderUtils.CreateHorizontalGroup(
                lobbyContainer.transform,
                "Host_Controls",
                10f,
                TextAnchor.MiddleCenter,
                new RectOffset(0, 0, 0, 0));
            UGUIBuilderUtils.CreateMenuButton(hostControls.transform, "Button_InviteFriends", "INVITE FRIENDS");
            UGUIBuilderUtils.CreateMenuButton(hostControls.transform, "Button_KickSelected", "KICK SELECTED");

            var friendsOverlay = new GameObject("Panel_Friends", typeof(RectTransform), typeof(Image));
            friendsOverlay.transform.SetParent(panelLobby.transform, false);
            var ovRT = (RectTransform)friendsOverlay.transform;
            ovRT.anchorMin = Vector2.zero;
            ovRT.anchorMax = Vector2.one;
            ovRT.offsetMin = Vector2.zero;
            ovRT.offsetMax = Vector2.zero;
            var ovImg = friendsOverlay.GetComponent<Image>();
            ovImg.color = new Color(0, 0, 0, 0.55f);
            friendsOverlay.SetActive(false);

            var closeBg = new GameObject("Button_CloseFriendsOverlay", typeof(RectTransform), typeof(Image), typeof(Button));
            closeBg.transform.SetParent(friendsOverlay.transform, false);
            var closeBgRT = (RectTransform)closeBg.transform;
            closeBgRT.anchorMin = Vector2.zero;
            closeBgRT.anchorMax = Vector2.one;
            closeBgRT.offsetMin = Vector2.zero;
            closeBgRT.offsetMax = Vector2.zero;
            var closeBgImg = closeBg.GetComponent<Image>();
            closeBgImg.color = new Color(0, 0, 0, 0);

            var friendsWindow = UGUIBuilderUtils.CreatePanel(friendsOverlay.transform, "Friends_Window", new Vector2(900, 420));
            var friendsV = UGUIBuilderUtils.CreateVerticalGroup(
                friendsWindow.transform,
                "Friends_VLayout",
                8f,
                TextAnchor.UpperCenter,
                new RectOffset(16, 16, 16, 16));
            UGUIBuilderUtils.CreateText(friendsV.transform, "Text_FriendsTitle", "INVITE FRIENDS", 24, TextAnchor.MiddleCenter, Color.white, FontStyles.Bold);
            UGUIBuilderUtils.CreateText(friendsV.transform, "Text_FriendsHint", "Select a friend to send a Steam invite.", 12, TextAnchor.MiddleCenter, new Color(0.8f, 0.8f, 0.8f), FontStyles.Normal);
            UGUIBuilderUtils.CreateScrollList(friendsV.transform, out var friendsContent, "Scroll_Friends", "Viewport", "Content_FriendsList");
            var vlgFriends = friendsContent.GetComponent<VerticalLayoutGroup>();
            if (vlgFriends)
            {
                Object.DestroyImmediate(vlgFriends);
            }
            var gridFriends = friendsContent.gameObject.AddComponent<GridLayoutGroup>();
            gridFriends.cellSize = new Vector2(72, 72);
            gridFriends.spacing = new Vector2(10, 10);
            gridFriends.startAxis = GridLayoutGroup.Axis.Horizontal;
            var csfFriends = friendsContent.GetComponent<ContentSizeFitter>();
            if (csfFriends == null)
            {
                csfFriends = friendsContent.gameObject.AddComponent<ContentSizeFitter>();
            }
            csfFriends.verticalFit = ContentSizeFitter.FitMode.PreferredSize;
            UGUIBuilderUtils.CreateText(friendsV.transform, "Empty_Friends", "No friends found.", 14, TextAnchor.MiddleCenter, new Color(0.8f, 0.8f, 0.8f), FontStyles.Italic);
            var friendsFooter = UGUIBuilderUtils.CreateHorizontalGroup(
                friendsV.transform,
                "Friends_Footer",
                8f,
                TextAnchor.MiddleCenter,
                new RectOffset(0, 0, 0, 0));
            UGUIBuilderUtils.CreateMenuButton(friendsFooter.transform, "Button_BackFromFriends", "BACK");

            UGUIBuilderUtils.CreateMenuButton(lobbyContainer.transform, "Button_ToggleReady", "TOGGLE READY");

            var footer = UGUIBuilderUtils.CreateHorizontalGroup(
                lobbyContainer.transform,
                "Lobby_Footer",
                10f,
                TextAnchor.MiddleCenter,
                new RectOffset(0, 0, 0, 0));
            UGUIBuilderUtils.CreateMenuButton(footer.transform, "Button_StartGame", "START GAME");
            UGUIBuilderUtils.CreateMenuButton(footer.transform, "Button_LeaveLobby", "LEAVE LOBBY");
            UGUIBuilderUtils.CreateMenuButton(footer.transform, "Button_BackFromLobby", "BACK TO MENU");

            return panelLobby;
        }
    }
}
#endif