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/**
* Utilities
* @module lib/util.js;
*/
import Tone from "tone";
import StartAudioContext from "./startAudioContext";
const isIphone =
navigator.userAgent.match(/iPhone/i) || navigator.userAgent.match(/iPod/i);
const isIpad = navigator.userAgent.match(/iPad/i);
const isAndroid = navigator.userAgent.match(/Android/i);
const isMobile = isIphone || isIpad || isAndroid;
const isDesktop = !isMobile;
document.body.classList.add(isMobile ? "mobile" : "desktop");
const browser = { isIphone, isIpad, isMobile, isDesktop };
function choice(a) {
return a[Math.floor(Math.random() * a.length)];
}
function mod(n, m) {
return n - m * Math.floor(n / m);
}
function roundFreq(freq) {
return Math.round(freq * 100);
}
const frequencyInRange = (freq) => 20 < freq && freq < 15000;
function requestAudioContext(fn) {
if (window.location.protocol !== "https:") {
const container = document.createElement("div");
const button = document.createElement("div");
button.innerHTML = "Tap to start - please unmute your phone";
Object.assign(container.style, {
display: "block",
position: "absolute",
width: "100%",
height: "100%",
zIndex: "10000",
top: "0px",
left: "0px",
backgroundColor: "rgba(0, 0, 0, 0.8)",
});
Object.assign(button.style, {
display: "block",
position: "absolute",
left: "50%",
top: "50%",
padding: "20px",
backgroundColor: "#7F33ED",
color: "white",
fontFamily: "monospace",
borderRadius: "3px",
transform: "translate3D(-50%,-50%,0)",
textAlign: "center",
lineHeight: "1.5",
width: "150px",
});
container.appendChild(button);
document.body.appendChild(container);
StartAudioContext.setContext(Tone.context);
StartAudioContext.on(button);
StartAudioContext.onStarted((_) => {
container.remove();
fn();
});
} else {
fn();
}
}
export {
choice,
mod,
browser,
roundFreq,
frequencyInRange,
requestAudioContext,
};
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