localspot/assets/js/app.js

// If you want to use Phoenix channels, run `mix help phx.gen.channel`
// to get started and then uncomment the line below.
// import "./user_socket.js"

// You can include dependencies in two ways.
//
// The simplest option is to put them in assets/vendor and
// import them using relative paths:
//
//     import "../vendor/some-package.js"
//
// Alternatively, you can `npm install some-package --prefix assets` and import
// them using a path starting with the package name:
//
//     import "some-package"
//
// If you have dependencies that try to import CSS, esbuild will generate a separate `app.css` file.
// To load it, simply add a second `<link>` to your `root.html.heex` file.

// 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/localspot"
import topbar from "../vendor/topbar"

// Custom hooks
const Geolocation = {
  mounted() {
    this.el.addEventListener("click", () => {
      if ("geolocation" in navigator) {
        this.el.disabled = true
        this.el.textContent = "Getting location..."
        navigator.geolocation.getCurrentPosition(
          (position) => {
            this.pushEvent("set_location", {
              latitude: position.coords.latitude.toString(),
              longitude: position.coords.longitude.toString()
            })
          },
          (error) => {
            console.error("Geolocation error:", error)
            this.el.disabled = false
            this.el.textContent = "Use My Location"
            alert("Could not get your location. Please check your browser permissions.")
          }
        )
      } else {
        alert("Geolocation is not supported by your browser.")
      }
    })
  }
}

const LeafletMap = {
  mounted() {
    // Load Leaflet CSS dynamically
    if (!document.querySelector('link[href*="leaflet"]')) {
      const link = document.createElement('link')
      link.rel = 'stylesheet'
      link.href = 'https://unpkg.com/leaflet@1.9.4/dist/leaflet.css'
      document.head.appendChild(link)
    }

    // Load Leaflet JS dynamically
    if (!window.L) {
      const script = document.createElement('script')
      script.src = 'https://unpkg.com/leaflet@1.9.4/dist/leaflet.js'
      script.onload = () => this.initMap()
      document.head.appendChild(script)
    } else {
      this.initMap()
    }
  },

  initMap() {
    const businesses = JSON.parse(this.el.dataset.businesses)
    const center = JSON.parse(this.el.dataset.center)
    const zoom = parseInt(this.el.dataset.zoom)

    // Clear the loading indicator
    this.el.innerHTML = ''

    // Initialize map
    this.map = L.map(this.el).setView([center.lat, center.lng], zoom)

    // Add OpenStreetMap tiles
    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
      attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
    }).addTo(this.map)

    // Add markers for each business
    this.markers = businesses.map(business => {
      const marker = L.marker([business.lat, business.lng])
        .addTo(this.map)
        .bindPopup(`
          <div class="text-sm">
            <strong>${business.name}</strong>
            ${business.locally_owned ? '<span style="color: green; margin-left: 4px;">&#10003; Local</span>' : ''}
            <br>
            <span style="color: #666;">${business.category}</span>
          </div>
        `)

      marker.on('click', () => {
        this.pushEvent('select_business', { slug: business.slug })
      })

      return marker
    })

    // Fit bounds to show all markers if there are any
    if (this.markers.length > 0) {
      const group = L.featureGroup(this.markers)
      this.map.fitBounds(group.getBounds().pad(0.1))
    }
  },

  destroyed() {
    if (this.map) {
      this.map.remove()
    }
  }
}

const csrfToken = document.querySelector("meta[name='csrf-token']").getAttribute("content")
const liveSocket = new LiveSocket("/live", Socket, {
  longPollFallbackMs: 2500,
  params: {_csrf_token: csrfToken},
  hooks: {...colocatedHooks, Geolocation, LeafletMap},
})

// 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())

// 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}) => {
    // 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
    window.addEventListener("keydown", e => keyDown = e.key)
    window.addEventListener("keyup", _e => keyDown = null)
    window.addEventListener("click", e => {
      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
  })
}