vail/static/vail.mjs

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import * as Morse from "./morse.mjs"
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import * as Inputs from "./inputs.mjs"
import * as Repeaters from "./repeaters.mjs"
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const DefaultRepeater = "General Chaos"
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const Millisecond = 1
const Second = 1000 * Millisecond
const Minute = 60 * Second
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/**
* Pop up a message, using an MDL snackbar.
*
* @param {string} msg Message to display
*/
function toast(msg) {
let el = document.querySelector("#snackbar")
if (!el || !el.MaterialSnackbar) {
console.warn(msg)
return
}
el.MaterialSnackbar.showSnackbar({
message: msg,
timeout: 2000
})
}
class VailClient {
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constructor() {
this.sent = []
this.lagTimes = [0]
this.rxDurations = [0]
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this.clockOffset = null // How badly our clock is off of the server's
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this.rxDelay = 0 // Milliseconds to add to incoming timestamps
this.beginTxTime = null // Time when we began transmitting
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this.debug = localStorage.debug
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// Redirect old URLs
if (window.location.search) {
let me = new URL(location)
let repeater = me.searchParams.get("repeater")
me.search = ""
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me.hash = decodeURIComponent(repeater)
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window.location = me
}
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// Make helpers
this.buzzer = new Morse.Buzzer()
this.keyer = new Morse.Keyer(() => this.beginTx(), () => this.endTx())
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this.roboKeyer = new Morse.Keyer(() => this.buzzer.Buzz(), () => this.buzzer.Silence())
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// Set up various input methods
this.inputs = Inputs.SetupAll(this.keyer)
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// VBand: Keep track of how the user wants the single key to behave
for (let e of document.querySelectorAll("[data-singlekey]")) {
e.addEventListener("click", e => this.singlekeyChange(e))
}
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// Maximize button
for (let e of document.querySelectorAll("button.maximize")) {
e.addEventListener("click", e => this.maximize(e))
}
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for (let e of document.querySelectorAll("#ck")) {
e.addEventListener("click", e => this.test())
}
// Set up sliders
this.sliderInit("#iambic-duration", e => {
this.keyer.SetIntervalDuration(e.target.value)
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this.roboKeyer.SetIntervalDuration(e.target.value)
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})
this.sliderInit("#rx-delay", e => {
this.rxDelay = Number(e.target.value)
})
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// Fill in the name of our repeater
let repeaterElement = document.querySelector("#repeater").addEventListener("change", e => this.setRepeater(e.target.value.trim()))
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window.addEventListener("hashchange", () => this.hashchange())
this.hashchange()
}
/**
* Called when the hash part of the URL has changed.
*/
hashchange() {
let hashParts = window.location.hash.split("#")
this.setRepeater(decodeURIComponent(hashParts[1] || ""))
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}
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/**
* VBand: Called when something happens to change what a single key does
*
* @param {Event} event What caused this
*/
singlekeyChange(event) {
for (let e of event.path) {
if (e.dataset && e.dataset.singlekey) {
this.inputs.Keyboard.iambic = (e.dataset.singlekey == "iambic")
}
}
}
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/**
* Connect to a repeater by name.
*
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* This does some switching logic to provide multiple types of repeaters,
* like the Fortunes repeaters.
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*
* @param {string} name Repeater name
*/
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setRepeater(name) {
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if (!name || (name == "")) {
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name = DefaultRepeater
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}
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this.repeaterName = name
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// Set value of repeater element
let repeaterElement = document.querySelector("#repeater")
let paps = repeaterElement.parentElement
if (paps.MaterialTextfield) {
paps.MaterialTextfield.change(name)
} else {
repeaterElement.value = name
}
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// Set window URL
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let prevHash = window.location.hash
window.location.hash = (name == DefaultRepeater) ? "" : name
if (window.location.hash != prevHash) {
// We're going to get a hashchange event, which will re-run this method
return
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}
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if (this.repeater) {
this.repeater.Close()
}
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let rx = (w,d,s) => this.receive(w,d,s)
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// If there's a number in the name, store that for potential later use
let numberMatch = name.match(/[0-9]+/)
let number = 0
if (numberMatch) {
number = Number(numberMatch[0])
}
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if (name.startsWith("Fortunes")) {
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this.roboKeyer.SetPauseMultiplier(number || 1)
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this.repeater = new Repeaters.Fortune(rx, this.roboKeyer)
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} else if (name.startsWith("Echo")) {
let delayElement = document.querySelector("#rx-delay")
delayElement.value = (number || 2) * Second
delayElement.dispatchEvent(new Event("input"))
this.repeater = new Repeaters.Echo(rx)
} else if (name == "Null") {
this.repeater = new Repeaters.Null(rx)
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} else {
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this.repeater = new Repeaters.Vail(rx, name)
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}
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toast(`Now using repeater: ${name}`)
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}
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/**
* Set up a slider.
*
* This reads any previously saved value and sets the slider to that.
* When the slider is updated, it saves the value it's updated to,
* and calls the provided callback with the new value.
*
* @param {string} selector CSS path to the element
* @param {function} callback Callback to call with any new value that is set
*/
sliderInit(selector, callback) {
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let element = document.querySelector(selector)
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if (!element) {
return
}
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let storedValue = localStorage[element.id]
if (storedValue) {
element.value = storedValue
}
let outputElement = document.querySelector(selector + "-value")
element.addEventListener("input", e => {
localStorage[element.id] = element.value
if (outputElement) {
outputElement.value = element.value
}
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if (callback) {
callback(e)
}
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})
element.dispatchEvent(new Event("input"))
}
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/**
* Make an error sound and pop up a message
*
* @param {string} msg The message to pop up
*/
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error(msg) {
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toast(msg)
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this.buzzer.ErrorTone()
}
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/**
* Start the side tone buzzer.
*/
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beginTx() {
this.beginTxTime = Date.now()
this.buzzer.Buzz(true)
}
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/**
* Stop the side tone buzzer, and send out how long it was active.
*/
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endTx() {
let endTxTime = Date.now()
let duration = endTxTime - this.beginTxTime
this.buzzer.Silence(true)
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this.repeater.Transmit(this.beginTxTime, duration)
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this.beginTxTime = null
}
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/**
* Called by a repeater class when there's something received.
*
* @param {number} when When to play the tone
* @param {number} duration How long to play the tone
* @param {dict} stats Stuff the repeater class would like us to know about
*/
receive(when, duration, stats) {
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this.clockOffset = stats.clockOffset || "?"
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let now = Date.now()
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when += this.rxDelay
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if (duration > 0) {
if (when < now) {
this.error("Packet requested playback " + (now - when) + "ms in the past. Increase receive delay!")
return
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}
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this.buzzer.BuzzDuration(false, when, duration)
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this.rxDurations.unshift(duration)
this.rxDurations.splice(20, 2)
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}
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let averageLag = (stats.averageLag || 0).toFixed(2)
let longestRxDuration = this.rxDurations.reduce((a,b) => Math.max(a,b))
let suggestedDelay = ((averageLag + longestRxDuration) * 1.2).toFixed(0)
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this.updateReading("#note", stats.note || "")
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this.updateReading("#lag-value", averageLag)
this.updateReading("#longest-rx-value", longestRxDuration)
this.updateReading("#suggested-delay-value", suggestedDelay)
this.updateReading("#clock-off-value", this.clockOffset)
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}
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/**
* Update an element with a value, if that element exists
*
* @param {string} selector CSS path to the element
* @param value Value to set
*/
updateReading(selector, value) {
let e = document.querySelector(selector)
if (e) {
e.value = value
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}
}
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/**
* Maximize/minimize a card
*
* @param e Event
*/
maximize(e) {
let element = e.target
while (!element.classList.contains("mdl-card")) {
element = element.parentElement
if (!element) {
console.log("Maximize button: couldn't find parent card")
return
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}
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}
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element.classList.toggle("maximized")
console.log(element)
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}
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/**
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* Send "CK" to server, and don't squelch the echo
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*/
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test() {
let when = Date.now()
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let dit = Number(document.querySelector("#iambic-duration-value").value)
let dah = dit * 3
let s = dit
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let message = [
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dah, s, dit, s, dah, s, dit,
s * 3,
dah, s, dit, s, dah
]
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this.repeater.Transmit(when, 0) // Get round-trip time
for (let i in message) {
let duration = message[i]
if (i % 2 == 0) {
this.repeater.Transmit(when, duration, false)
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}
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when += duration
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}
}
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}
function vailInit() {
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if (navigator.serviceWorker) {
navigator.serviceWorker.register("sw.js")
}
try {
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window.app = new VailClient()
} catch (err) {
console.log(err)
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toast(err)
}
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}
if (document.readyState === "loading") {
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document.addEventListener("DOMContentLoaded", vailInit)
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} else {
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vailInit()
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}
// vim: noet sw=2 ts=2