Keep source=gps in URL when GPS is used, single copy link, fix unicode

- GPS button sets source_is_gps flag, URL stays source=gps
- Form shows resolved coordinates but URL preserves gps intent
- Single "Copy Link" button copies current URL (includes gps if used)
- Fix unicode escapes in HEEx: use Elixir interpolation for subscripts

assets/js/locate_me_hook.js

@@ -1,8 +1,7 @@
 export const CopyLink = {
   mounted() {
     this.el.addEventListener("click", () => {
-      const url = window.location.origin + this.el.dataset.url
-      navigator.clipboard.writeText(url).then(() => {
+      navigator.clipboard.writeText(window.location.href).then(() => {
         const orig = this.el.innerHTML
         this.el.innerHTML = '<span class="text-success">Copied!</span>'
         setTimeout(() => { this.el.innerHTML = orig }, 1500)

lib/microwaveprop_web/live/path_live.ex

@@ -50,7 +50,8 @@ defmodule MicrowavepropWeb.PathLive do
        dst_height_ft: "30",
        tx_power_dbm: "20",
        src_gain_dbi: "30",
-       dst_gain_dbi: "30"
+       dst_gain_dbi: "30",
+       source_is_gps: false
      )}
   end
 
@@ -58,16 +59,19 @@ defmodule MicrowavepropWeb.PathLive do
   def handle_params(params, _uri, socket) do
     p = Map.merge(@defaults, Map.take(params, @url_params))
 
+    is_gps = p["source"] == "gps"
+
     socket =
       assign(socket,
-        source: p["source"],
+        source: if(is_gps, do: socket.assigns.source, else: p["source"]),
         destination: p["destination"],
         band: p["band"],
         src_height_ft: p["src_height_ft"],
         dst_height_ft: p["dst_height_ft"],
         tx_power_dbm: p["tx_power_dbm"],
         src_gain_dbi: p["src_gain_dbi"],
-        dst_gain_dbi: p["dst_gain_dbi"]
+        dst_gain_dbi: p["dst_gain_dbi"],
+        source_is_gps: is_gps
       )
 
     # If source=gps, request device location via JS
@@ -156,19 +160,25 @@ defmodule MicrowavepropWeb.PathLive do
       {:compute_path, params["source"], params["destination"], String.to_integer(params["band"]), station_params}
     )
 
-    url_params = params |> Map.take(@url_params) |> Enum.reject(fn {_k, v} -> v == "" end) |> Map.new()
+    url_params =
+      params
+      |> Map.take(@url_params)
+      |> then(fn p -> if socket.assigns.source_is_gps, do: Map.put(p, "source", "gps"), else: p end)
+      |> Enum.reject(fn {_k, v} -> v == "" end)
+      |> Map.new()
+
     {:noreply, push_patch(socket, to: ~p"/path?#{url_params}", replace: true)}
   end
 
   def handle_event("gps_location", %{"lat" => lat, "lon" => lon}, socket) do
-    source = "#{Float.round(lat / 1, 6)},#{Float.round(lon / 1, 6)}"
+    coords = "#{Float.round(lat / 1, 6)},#{Float.round(lon / 1, 6)}"
 
-    # Replace gps with actual coords in URL and trigger calculation
-    socket = assign(socket, source: source, result: nil)
+    # Show coords in the input but keep source=gps in the URL
+    socket = assign(socket, source: coords, source_is_gps: true, result: nil)
 
     url_params =
       %{
-        "source" => source,
+        "source" => "gps",
         "destination" => socket.assigns.destination,
         "band" => socket.assigns.band,
         "src_height_ft" => socket.assigns.src_height_ft,
@@ -470,27 +480,6 @@ defmodule MicrowavepropWeb.PathLive do
   defp format_utc_hour(%DateTime{} = dt), do: Calendar.strftime(dt, "%H:%M")
   defp format_utc_hour(_), do: "?"
 
-  defp share_url(result, mode) do
-    source =
-      case mode do
-        :gps -> "gps"
-        :fixed -> "#{Float.round(result.source.lat, 4)},#{Float.round(result.source.lon, 4)}"
-      end
-
-    params = %{
-      "source" => source,
-      "destination" => result.destination.label,
-      "band" => to_string(result.band_mhz),
-      "src_height_ft" => to_string(result.station_params.src_height_ft),
-      "dst_height_ft" => to_string(result.station_params.dst_height_ft),
-      "tx_power_dbm" => to_string(result.station_params.tx_power_dbm),
-      "src_gain_dbi" => to_string(result.station_params.src_gain_dbi),
-      "dst_gain_dbi" => to_string(result.station_params.dst_gain_dbi)
-    }
-
-    "/path?" <> URI.encode_query(params)
-  end
-
   defp format_mw(mw) when mw >= 1000, do: "#{format_number(mw / 1000)} W"
   defp format_mw(mw) when mw >= 1, do: "#{format_number(mw)} mW"
   defp format_mw(mw), do: "#{format_number(mw * 1000)} uW"
@@ -917,26 +906,16 @@ defmodule MicrowavepropWeb.PathLive do
       </div>
     <% end %>
 
-    <%!-- Share links --%>
-    <div class="flex flex-wrap gap-2 mb-6">
+    <%!-- Share link --%>
+    <div class="mb-6">
       <button
         type="button"
         phx-hook="CopyLink"
         id="copy-link"
-        data-url={share_url(@result, :fixed)}
         class="btn btn-sm btn-outline gap-1"
       >
         <.icon name="hero-link" class="size-3.5" /> Copy Link
       </button>
-      <button
-        type="button"
-        phx-hook="CopyLink"
-        id="copy-gps-link"
-        data-url={share_url(@result, :gps)}
-        class="btn btn-sm btn-outline gap-1"
-      >
-        <.icon name="hero-map-pin" class="size-3.5" /> Copy Link (use viewer's GPS)
-      </button>
     </div>
     """
   end