Added alert when bot can't access server

apps/static/js/home/subscriptions.js

@@ -256,6 +256,7 @@ async function loadChannelOptions(guildId) {
         }
 
         if (channels.code === 50001) {
+            showServerJoinAlert();
             throw new Error(
                 `Unable to retrieve channels from Guild '${guildId}'.
                 Ensure that @PYRSS is a member with permissions
@@ -317,4 +318,16 @@ async function loadFilterOptions(guildId) {
             $("#subFilters").prop("disabled", false);
         }
 
+}
+
+function showServerJoinAlert() {
+    const guildId = getCurrentlyActiveServer().guild_id;
+    const inviteUrl = `https://discord.com/oauth2/authorize
+        ?client_id=1129345991758336020
+        &permissions=2147534848&scope=bot+applications.commands
+        &guild_id=${guildId}
+        &disable_guild_select=true`
+
+    $("#serverJoinAlert a.alert-link").attr("href", inviteUrl);
+    $("#serverJoinAlert").show();
 }

apps/templates/home/index.html

@@ -37,6 +37,18 @@
                     </div>
                 </div>
 
+                <div class="col-12 m-0">
+                    <div id="serverJoinAlert" class="alert alert-warning alert-dismissable fade show mt-4 d-flex align-items-center" role="alert" style="display: hidden">
+                        <i class="bi bi-warning"></i>
+                        <span>
+                            <strong>Warning:</strong>
+                            The Bot isn't a member of this server, please <a href="" class="alert-link">invite the bot</a> to use it.
+                        </span>
+
+                        <button type="button" class="btn-close ms-auto" data-bs-dismiss="alert" aria-label="Close"></button>
+                    </div>
+                </div>
+
                 <div class="col-12">
                     <div class="d-flex px-3 pt-4 pb-2">
                         <ul id="serverTabs" class="nav nav-pills me-auto" role="tablist">