prop/assets/js/app.ts

// Leaflet map library (vendored)
import * as L from "../vendor/leaflet/leaflet.js"
window.L = L

// Include phoenix_html to handle method=PUT/DELETE in forms and buttons.
import "phoenix_html"
// Establish Phoenix Socket and LiveView configuration.
import {Socket} from "phoenix"
import {LiveSocket} from "phoenix_live_view"
import {hooks as colocatedHooks} from "phoenix-colocated/microwaveprop"
import topbar from "../vendor/topbar"

import initLiveStash from "../../deps/live_stash/assets/js/live-stash.js"
import {PropagationMap} from "./propagation_map_hook"
import {ContactMap} from "./contact_map_hook"
import {ContactsMap} from "./contacts_map_hook"
import {ElevationProfile} from "./elevation_profile_hook"
import {WeatherMap} from "./weather_map_hook"
import {LocateMe, CopyLink} from "./locate_me_hook"
import {RoverMap} from "./rover_map_hook"
import {BeaconMap} from "./beacon_map_hook"

interface UtcClockHook extends ViewHook {
  timer: ReturnType<typeof setInterval>
  tick(): void
}

const UtcClock = {
  mounted(this: UtcClockHook) {
    this.tick()
    this.timer = setInterval(() => this.tick(), 10_000)
  },
  tick(this: UtcClockHook) {
    const now = new Date()
    const h = now.getUTCHours().toString().padStart(2, "0")
    const m = now.getUTCMinutes().toString().padStart(2, "0")
    this.el.textContent = `${h}:${m} UTC`
  },
  destroyed(this: UtcClockHook) {
    clearInterval(this.timer)
  }
}

interface CommaNumberHook extends ViewHook {
  format(): void
}

const CommaNumber = {
  mounted(this: CommaNumberHook) {
    this.el.addEventListener("input", () => this.format())
    this.format()
  },
  updated(this: CommaNumberHook) { this.format() },
  format(this: CommaNumberHook) {
    const input = (this.el.querySelector("input") || this.el) as HTMLInputElement
    const raw = input.value.replace(/,/g, "")
    if (raw === "" || raw === "-") return
    const cursor = input.selectionStart ?? 0
    const commasBefore = (input.value.slice(0, cursor).match(/,/g) || []).length
    const parts = raw.split(".")
    parts[0] = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",")
    const formatted = parts.join(".")
    if (formatted !== input.value) {
      input.value = formatted
      const commasAfter = (formatted.slice(0, cursor).match(/,/g) || []).length
      const newCursor = cursor + (commasAfter - commasBefore)
      input.setSelectionRange(newCursor, newCursor)
    }
  }
}

const csrfToken = document.querySelector("meta[name='csrf-token']")!.getAttribute("content")
const liveSocket = new LiveSocket("/live", Socket, {
  longPollFallbackMs: 2500,
  params: initLiveStash({_csrf_token: csrfToken}),
  hooks: {...colocatedHooks, PropagationMap, UtcClock, ContactMap, ContactsMap, ElevationProfile, WeatherMap, LocateMe, CopyLink, RoverMap, BeaconMap, CommaNumber},
})

// Show progress bar on live navigation and form submits
topbar.config({barColors: {0: "#29d"}, shadowColor: "rgba(0, 0, 0, .3)"})
window.addEventListener("phx:page-loading-start", _info => topbar.show(300))
window.addEventListener("phx:page-loading-stop", _info => topbar.hide())

// Delay disconnect alerts by 3 seconds so brief hiccups don't flash errors
let disconnectTimer: ReturnType<typeof setTimeout> | null = null
const DISCONNECT_DELAY_MS = 3000

function showDisconnectAlert(id: string) {
  const el = document.getElementById(id)
  if (el) el.removeAttribute("hidden")
}

function hideDisconnectAlert(id: string) {
  const el = document.getElementById(id)
  if (el) el.setAttribute("hidden", "")
}

new MutationObserver(() => {
  const root = document.querySelector("[data-phx-main]")
  if (!root) return

  const hasError = root.classList.contains("phx-client-error") ||
                   root.classList.contains("phx-server-error")

  if (hasError && !disconnectTimer) {
    disconnectTimer = setTimeout(() => {
      const r = document.querySelector("[data-phx-main]")
      if (r?.classList.contains("phx-client-error")) showDisconnectAlert("client-error")
      if (r?.classList.contains("phx-server-error")) showDisconnectAlert("server-error")
    }, DISCONNECT_DELAY_MS)
  } else if (!hasError && disconnectTimer) {
    clearTimeout(disconnectTimer)
    disconnectTimer = null
    hideDisconnectAlert("client-error")
    hideDisconnectAlert("server-error")
  }
}).observe(document.body, {subtree: true, attributes: true, attributeFilter: ["class"]})

// connect if there are any LiveViews on the page
liveSocket.connect()

// expose liveSocket on window for web console debug logs and latency simulation:
// >> liveSocket.enableDebug()
// >> liveSocket.enableLatencySim(1000)  // enabled for duration of browser session
// >> liveSocket.disableLatencySim()
window.liveSocket = liveSocket

// The lines below enable quality of life phoenix_live_reload
// development features:
//
//     1. stream server logs to the browser console
//     2. click on elements to jump to their definitions in your code editor
//
if (process.env.NODE_ENV === "development") {
  window.addEventListener("phx:live_reload:attached", ({detail: reloader}: any) => {
    // Enable server log streaming to client.
    // Disable with reloader.disableServerLogs()
    reloader.enableServerLogs()

    // Open configured PLUG_EDITOR at file:line of the clicked element's HEEx component
    //
    //   * click with "c" key pressed to open at caller location
    //   * click with "d" key pressed to open at function component definition location
    let keyDown: string | null
    window.addEventListener("keydown", (e: KeyboardEvent) => keyDown = e.key)
    window.addEventListener("keyup", (_e: KeyboardEvent) => keyDown = null)
    window.addEventListener("click", (e: MouseEvent) => {
      if(keyDown === "c"){
        e.preventDefault()
        e.stopImmediatePropagation()
        reloader.openEditorAtCaller(e.target)
      } else if(keyDown === "d"){
        e.preventDefault()
        e.stopImmediatePropagation()
        reloader.openEditorAtDef(e.target)
      }
    }, true)

    window.liveReloader = reloader
  })
}