/// <reference path="./both.js" />

function getCookie(cname) {
    var name = cname + "=";
    var decodedCookie = decodeURIComponent(document.cookie);
    var ca = decodedCookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') {
            c = c.substring(1);
        }
        if (c.indexOf(name) == 0) {
            return c.substring(name.length, c.length);
        }
    }
    return "";
}

function deleteCookie(cname) {
    document.cookie = `${cname}=;expires=Thu, 01 Jan 1970 00:00:01 GMT`
}

function setPlaying(title, link) {
    if (title !== "") {
        $('#playing').text(title);
        document.title = pageTitle + " | " + title;
    } else {
        $('#playing').text("");
        document.title = pageTitle;
    }

    $('#playing').removeAttr('href');
    if (link !== "") {
        $('#playing').attr('href', link);
    }
}

function startGo() {
    if (!WebAssembly.instantiateStreaming) { // polyfill
        WebAssembly.instantiateStreaming = async (resp, importObject) => {
            const source = await (await resp).arrayBuffer();
            return await WebAssembly.instantiate(source, importObject);
        };
    }

    const go = new Go();
    WebAssembly.instantiateStreaming(fetch("/static/main.wasm"), go.importObject).then((result) => {
        go.run(result.instance);
    }).then(() => {
        $("#chatwindow").css("display", "grid");
        $("#loadingFiles").css("display", "none");
    }).catch((err) => {
        console.error(err);
    });
}

function getWsUri() {
    port = window.location.port;
    if (port != "") {
        port = ":" + port;
    }
    proto = "ws://"
    if (location.protocol == "https:") {
        proto = "wss://"
    }
    return proto + window.location.hostname + port + "/ws";
}

let maxMessageCount = 0
function appendMessages(msg) {
    let msgs = $("#messages").find('div');

    // let's just say that if the max count is less than 1, then the count is infinite
    // the server side should take care of chaking max count ranges
    if (msgs.length > maxMessageCount) {
        msgs.first().remove();
    }

    $("#messages").append(msg);
    $("#messages").children().last()[0].scrollIntoView({ block: "end" });
}

function purgeChat() {
    $('#messages').empty()
}

inChat = false
function openChat() {
    console.log("chat opening");
    $("#joinbox").css("display", "none");
    $("#chat").css("display", "grid");
    $("#hidden").css("display", "")
    $("#msg").val("");
    $("#msg").focus();
    inChat = true;
}

function closeChat() {
    console.log("chat closing");
    $("#joinbox").css("display", "");
    $("#chat").css("display", "none");
    $("#hidden").css("display", "none")
    setNotifyBox("That name was already used!");
    inChat = false;
}

function websocketSend(data) {
    if (ws.readyState == ws.OPEN) {
        ws.send(data);
    } else {
        console.log("did not send data because websocket is not open", data);
    }
}

function sendChat() {
    sendMessage($("#msg").val());
    $("#msg").val("");
}

function updateSuggestionCss(m) {
    if ($("#suggestions").children().length > 0) {
        $("#suggestions").css("bottom", $("#msg").outerHeight(true) - 1 + "px");
        $("#suggestions").css("display", "");
    } else {
        $("#suggestions").css("display", "none");
    }
}

function updateSuggestionScroll() {
    let item = $("#suggestions .selectedName");
    if (item.length !== 0) {
        item[0].scrollIntoView({ block: "center" });
    }
}

function setNotifyBox(msg = "") {
    $("#notifyBox").html(msg);
}

// Button Wrapper Functions
function auth() {
    let pass = prompt("Enter pass");
    if (pass != "" && pass !== null) {
        sendMessage("/auth " + pass);
    }
}

function nick() {
    let nick = prompt("Enter new name");
    if (nick != "" && nick !== null) {
        sendMessage("/nick " + nick);
    }
}

function help() {
    sendMessage("/help");
}

function showColors(show) {
    if (show === undefined) {
        show = $("#hiddencolor").css("display") === "none";
    }

    $("#hiddencolor").css("display", show ? "block" : "");
}

function colorAsHex() {
    let r = parseInt($("#colorRed").val()).toString(16).padStart(2, "0");
    let g = parseInt($("#colorGreen").val()).toString(16).padStart(2, "0");
    let b = parseInt($("#colorBlue").val()).toString(16).padStart(2, "0");
    return `#${r}${g}${b}`
}

function updateColor() {
    let r = $("#colorRed").val();
    let g = $("#colorGreen").val();
    let b = $("#colorBlue").val();

    $("#colorRedLabel").text(r.padStart(3, "0"));
    $("#colorGreenLabel").text(g.padStart(3, "0"));
    $("#colorBlueLabel").text(b.padStart(3, "0"));

    $("#colorName").css("color", `rgb(${r}, ${g}, ${b})`);

    if (isValidColor(colorAsHex())) {
        $("#colorWarning").text("");
    } else {
        $("#colorWarning").text("Unreadable Color");
    }
}

function changeColor() {
    if (isValidColor(colorAsHex())) {
        sendColor(colorAsHex());
    }
}

function colorSelectChange() {
    let val = $("#colorSelect").val()
    if (val !== "") {
        sendColor(val);
    }
}

function sendColor(color) {
    sendMessage("/color " + color);
    showColors(false);
}

function setTimestamp(v) {
    showTimestamp(v)
    document.cookie = "timestamp=" + v + "; expires=Fri, 31 Dec 9999 23:59:59 GMT";
}

// Get the websocket setup in a function so it can be recalled
function setupWebSocket() {
    ws = new WebSocket(getWsUri());
    ws.onmessage = (m) => recieveMessage(m.data);
    ws.onopen = () => console.log("Websocket Open");
    ws.onclose = () => {
        closeChat();
        setNotifyBox("The connection to the server has closed. Please refresh page to connect again.");
        $("#joinbox").css("display", "none");
    }
    ws.onerror = (e) => {
        console.log("Websocket Error:", e);
        e.target.close();
    }
}

function setupEvents() {
    $("#name").on({
        keypress: (e) => {
            if (e.originalEvent.keyCode == 13) {
                $("#join").trigger("click");
            }
        }
    });

    $("#msg").on({
        keypress: (e) => {
            if (e.originalEvent.keyCode == 13 && !e.originalEvent.shiftKey) {
                $("#send").trigger("click");
                e.preventDefault();
            }
        },
        keydown: (e) => {
            if (processMessageKey(e)) {
                e.preventDefault();
            }
        },
        input: () => processMessage(),
    });

    $("#send").on({
        click: () => $("#msg").focus(),
    });

    var suggestionObserver = new MutationObserver(
        (mutations) => mutations.forEach(updateSuggestionCss)
    ).observe($("#suggestions")[0], { childList: true });
}

function defaultValues() {
    setTimeout(() => {
        let timestamp = getCookie("timestamp")
        if (timestamp !== "") {
            showTimestamp(timestamp === "true")
        }
    }, 500);
}

window.addEventListener("onresize", updateSuggestionCss);

window.addEventListener("load", () => {
    setNotifyBox();
    setupWebSocket();
    startGo();
    setupEvents();
    defaultValues();

    // Make sure name is focused on start
    $("#name").focus();
});