"use strict";
console.log("Loading browser sdk");
var BASE_URL = "https://matrix.org";
var TOKEN = "accesstokengoeshere";
var USER_ID = "@username:localhost";
var ROOM_ID = "!room:id";


var client = matrixcs.createClient({
    baseUrl: BASE_URL,
    accessToken: TOKEN,
    userId: USER_ID
});
var call;

function disableButtons(place, answer, hangup) {
    document.getElementById("hangup").disabled = hangup;
    document.getElementById("answer").disabled = answer;
    document.getElementById("call").disabled = place;
}

function addListeners(call) {
    var lastError = "";
    call.on("hangup", function() {
        disableButtons(false, true, true);
        document.getElementById("result").innerHTML = (
            "<p>Call ended. Last error: "+lastError+"</p>"
        );
    });
    call.on("error", function(err) {
        lastError = err.message;
        call.hangup();
        disableButtons(false, true, true);
    });
}

window.onload = function() {
    document.getElementById("result").innerHTML = "<p>Please wait. Syncing...</p>";
    document.getElementById("config").innerHTML = "<p>" +
        "Homeserver: <code>"+BASE_URL+"</code><br/>"+
        "Room: <code>"+ROOM_ID+"</code><br/>"+
        "User: <code>"+USER_ID+"</code><br/>"+
        "</p>";
    disableButtons(true, true, true);
};

matrixClient.on("sync", function(state, prevState, data) {
    switch (state) {
        case "PREPARED":
          syncComplete();
        break;
   }
});

function syncComplete() {
    document.getElementById("result").innerHTML = "<p>Ready for calls.</p>";
    disableButtons(false, true, true);

    document.getElementById("call").onclick = function() {
        console.log("Placing call...");
        call = matrixcs.createNewMatrixCall(
            client, ROOM_ID
        );
        console.log("Call => %s", call);
        addListeners(call);
        call.placeVideoCall(
            document.getElementById("remote"),
            document.getElementById("local")
        );
        document.getElementById("result").innerHTML = "<p>Placed call.</p>";
        disableButtons(true, true, false);
    };

    document.getElementById("hangup").onclick = function() {
        console.log("Hanging up call...");
        console.log("Call => %s", call);
        call.hangup();
        document.getElementById("result").innerHTML = "<p>Hungup call.</p>";
    };

    document.getElementById("answer").onclick = function() {
        console.log("Answering call...");
        console.log("Call => %s", call);
        call.answer();
        disableButtons(true, true, false);
        document.getElementById("result").innerHTML = "<p>Answered call.</p>";
    };

    client.on("Call.incoming", function(c) {
        console.log("Call ringing");
        disableButtons(true, false, false);
        document.getElementById("result").innerHTML = "<p>Incoming call...</p>";
        call = c;
        addListeners(call);
    });
}
client.startClient();
