(function() {
    // poker_cards.js — attach to the card hand mesh entity
    // userData: { "pokerID": "main", "tableID": "{uuid}" }

    var constants = Script.require(Script.resolvePath("poker_constants.js"));
    var API_BASE  = constants.API_BASE;

    var _entityID     = null;
    var _pokerID      = null;
    var _username     = null;
    var _token        = null;
    var _ws           = null;
    var _rendererID   = null;  // local web entity that generates the texture
    var _materialID   = null;  // local material entity applied to this mesh
    var _wsRetryTimer = null;
    var _pendingCards = null;

    // ── helpers ──────────────────────────────────────────────────

    function getUserData(id) {
        try {
            return JSON.parse(Entities.getEntityProperties(id, ["userData"]).userData || "{}");
        } catch(e) { return {}; }
    }

    // ── session ──────────────────────────────────────────────────

    function ensureSession(cb) {
        if (_token) { cb(null, _token); return; }
        _username = AccountServices.username;
        if (!_username) { cb("not logged in"); return; }

        var xhr = new XMLHttpRequest();
        xhr.open("POST", API_BASE + "/session", true);
        xhr.setRequestHeader("Content-Type", "application/json");
        xhr.onreadystatechange = function() {
            if (xhr.readyState !== 4) return;
            if (xhr.status === 200) {
                try {
                    _token = JSON.parse(xhr.responseText).token;
                    cb(null, _token);
                } catch(e) { cb("session parse error"); }
            } else {
                cb("session error " + xhr.status);
            }
        };
        xhr.send(JSON.stringify({ username: _username }));
    }

    // ── WebSocket ────────────────────────────────────────────────

    function connectWS() {
        var wsURL = API_BASE.replace("https://", "wss://").replace("http://", "ws://")
                            .replace("/api", "/ws");
        _ws = new WebSocket(wsURL);

        _ws.onopen = function() {
            print("[pokerCards] WS connected");
            // Identify so server can route private messages
            print("[pokerCards] WS connected, identifying as: " + _username);
            _ws.send(JSON.stringify({ type: "identify", username: _username }));
        };

        _ws.onmessage = function(event) {
            print("[pokerCards] WS message received: " + event.data.substring(0, 100));
            try {
                var msg = JSON.parse(event.data);
                if (msg.type === "hand:dealt") {
                    onCardsDealt(msg.cards);
                } else if (msg.type === "hand:end") {
                    hideCards();
                } else if (msg.type === "player:disconnect:stand") {
                    if (msg.username === _username) {
                        print("[pokerCards] deferred stand complete, chips returned: " + msg.stack);
                        Messages.sendLocalMessage("poker:standComplete", JSON.stringify({
                            username: msg.username,
                            stack: msg.stack,
                        }));
                    }
                }
            } catch(e) {
                print("[pokerCards] WS parse error: " + e);
            }
        };

        _ws.onclose = function() {
            print("[pokerCards] WS closed, retrying in 5s");
            _wsRetryTimer = Script.setTimeout(connectWS, 5000);
        };

        _ws.onerror = function(e) {
            print("[pokerCards] WS error: " + e);
        };
    }

    // ── card rendering ───────────────────────────────────────────

    function onCardsDealt(cards) {
        if (!cards || cards.length < 2) return;
        var card1 = parseCard(cards[0]);
        var card2 = parseCard(cards[1]);
        print("[pokerCards] dealt " + cards[0] + " " + cards[1]);

        _pendingCards = { card1: card1, card2: card2 };

        _rendererID = Entities.addEntity({
            type: "Web",
            name: "card-renderer",
            sourceUrl: "https://wizards.cyou/tablet/card-face.html",
            position: MyAvatar.position,
            dimensions: { x: 0.01, y: 0.01, z: 0.01 },
            visible: false,
        }, "local");

        print("[pokerCards] spawned renderer entity: " + _rendererID);
    }

    function onTextureReady(dataURI) {
        // Clean up renderer
        if (_rendererID) {
            Entities.deleteEntity(_rendererID);
            _rendererID = null;
        }

        // Remove old material if any
        if (_materialID) {
            Entities.deleteEntity(_materialID);
            _materialID = null;
        }

        // Apply local material entity to card mesh
        _materialID = Entities.addEntity({
            type: "Material",
            name: "card-face-material",
            parentID: _entityID,
            materialURL: "materialData",
            materialData: JSON.stringify({
                materials: {
                    model: "hifi_pbr",
                    albedoMap: dataURI,
                    roughness: 0.8,
                    metallic: 0.0,
                }
            }),
            priority: 1,
        }, "local");

        print("[pokerCards] card texture applied");
    }

    function hideCards() {
        if (_materialID) {
            Entities.deleteEntity(_materialID);
            _materialID = null;
        }
        print("[pokerCards] cards hidden");
    }

    function parseCard(str) {
        // "As" → { rank: "A", suit: "♠" }
        // "10h" → { rank: "10", suit: "♥" }
        var suitMap = { s: '♠', h: '♥', d: '♦', c: '♣' };
        var suit = suitMap[str.slice(-1)] || '♠';
        var rank = str.slice(0, -1);
        return { rank: rank, suit: suit };
    }

    function onCardsDealt(cards) {
        if (!cards || cards.length < 2) return;
        var card1 = parseCard(cards[0]);
        var card2 = parseCard(cards[1]);
        print("[pokerCards] dealt " + cards[0] + " " + cards[1]);

        _pendingCards = { card1: card1, card2: card2 };

        _rendererID = Entities.addEntity({
            type: "Web",
            name: "card-renderer",
            sourceUrl: "https://wizards.cyou/tablet/card-face.html",
            position: MyAvatar.position,
            dimensions: { x: 0.01, y: 0.01, z: 0.01 },
            visible: false,
        }, "local");
    }

    function onWebEventReceived(id, data) {
        print("[pokerCards] webEvent from " + id + " renderer is " + _rendererID);
        if (id !== _rendererID) return;
        try {
            var msg = JSON.parse(data);
            print("[pokerCards] renderer msg type: " + msg.type);
            if (msg.type === 'rendererReady') {
                print("[pokerCards] renderer ready, sending cards");
                Entities.emitScriptEvent(_rendererID, JSON.stringify({
                    type: 'dealCards',
                    card1: _pendingCards.card1,
                    card2: _pendingCards.card2,
                }));
            } else if (msg.type === 'cardTexture') {
                print("[pokerCards] texture received, length: " + msg.dataURI.length);
                onTextureReady(msg.dataURI);
            }
        } catch(e) {
            print("[pokerCards] webEvent parse error: " + e);
        }
    }

    // ── web entity event listener ────────────────────────────────

    function onWebEventReceived(id, data) {
        if (id !== _rendererID) return;
        try {
            var msg = JSON.parse(data);
            if (msg.type === "cardTexture") {
                onTextureReady(msg.dataURI);
            }
        } catch(e) {}
    }

    // ── lifecycle ────────────────────────────────────────────────

    this.preload = function(entityID) {
        _entityID = entityID;
        var ud = getUserData(entityID);
        _pokerID = ud.pokerID || "main";

        Entities.webEventReceived.connect(onWebEventReceived);

        ensureSession(function(err) {
            if (err) { print("[pokerCards] session error: " + err); return; }
            connectWS();
        });
    };

    this.unload = function() {
        if (_wsRetryTimer) Script.clearTimeout(_wsRetryTimer);
        if (_ws) _ws.close();
        if (_materialID) Entities.deleteEntity(_materialID);
        if (_rendererID) Entities.deleteEntity(_rendererID);
        Entities.webEventReceived.disconnect(onWebEventReceived);
        _token = null;
    };
});