App.svelte

<!-- App.svelte -->
<script>
  import { onDestroy, onMount } from "svelte";
  import { initializeRoute, pathName, navigateTo, component, componentParams } from "./lib/scripts/route.js";
  import { initPlaybackAudio } from "./lib/scripts/playback.js";
  import { initializeMediaSession } from "./lib/scripts/mediasession.js";
  import PlayerBarComponent from "./lib/components/PlayerBarComponent.svelte";
  import Modals from "./lib/components/Modals.svelte";
  import { initPlaylist } from "./lib/scripts/playlist.js";
  
  // TODO remove this import when manual refresh logic is no longer needed
  import { clearStorage } from "./lib/scripts/storage.js";
  import { playlistsStore, initStores, updateStores } from "./lib/scripts/api.js";

  $: $pathName;
  $: $component;

  let intervalId;

  // @ts-ignore
  const version = __APP_VERSION__;

  onMount(() => {
    async function async() {
      await initStores();
      initPlaylist();
      initPlaybackAudio();
      initializeMediaSession();
      initializeRoute();
      backgroundFetch();
    }
    async();
  });

  async function backgroundFetch() {
    const fetchInterval = 1000 * 15; // 15 seconds
    let isRunning = false;

    intervalId = setInterval(async () => {
      if (isRunning) return; // Prevent concurrent executions
      
      isRunning = true; 

      try {
        await updateStores();
      } catch (error) {
        console.error("Error during background fetch:", error);
      } finally {
        isRunning = false;
      }
    }, fetchInterval);
  }

  // This is a temporary function to handle refresh logic.
  // It can be replaced with a more specific implementation later.
  async function refresh() {
    clearInterval(intervalId);
    clearStorage();
    playlistsStore.set([]);
    await initStores();
    backgroundFetch();
  }
</script>

<div class="app-layout bg-dark">
  <!-- Sticky Top Bar -->
  <header class="top-bar">
    <div class="container-fluid h-100">{$pathName} <span style="font-size: 0.8rem;">(v{version})</span></div>
  </header>

  <!-- Scrollable Content -->
  <main class="scrollable-content">
    <div class="container-fluid">
      <svelte:component this={$component} {...$componentParams} />
    </div>
  </main>

  <!-- Sticky Player Bar -->
  <PlayerBarComponent />

  <!-- Sticky Bottom Bar -->
  <footer class="bottom-bar">
    <div class="row w-100">
      <div class="col-6">
        <button aria-label="empty storage" class="btn btn-dark w-100" on:click={refresh}><i class="fa-solid fa-trash"></i></button>
      </div>
      <div class="col-6">
        <button aria-label="home" class="btn btn-dark w-100" on:click={() => navigateTo("/Home")}><i class="fa-solid fa-house"></i></button>
      </div>
    </div>
  </footer>
</div>

<Modals />

<audio id="audio-player" style="display: none;"></audio>

<style>
  .app-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
  }

  .bottom-bar button {
    font-size: 1.2rem;
    max-height: 3rem;
    border: none !important;
  }

  .top-bar {
    flex: 0 0 auto;
    padding: 1rem;
    position: sticky;
    height: 3.5rem;
    top: 0;
    z-index: 10;
    text-align: center;
    border-bottom: 0.2rem solid #5bbd99;
    border-bottom-left-radius: 1.5rem;
    border-bottom-right-radius: 1.5rem;
  }

  .scrollable-content {
    flex: 1 1 auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 1rem 1rem 3rem; /* 👈 Important: bottom padding to make space for bottom bar */
  }

  .bottom-bar {
    flex: 0 0 auto;
    padding: 0.5rem;
    position: sticky;
    bottom: 0;
    z-index: 10;
    display: flex;
    justify-content: center;
    border-top: 0.2rem solid #5bbd99;
    border-top-left-radius: 1.5rem;
    border-top-right-radius: 1.5rem;
    height: 3.8rem; /* Optional: define fixed height if needed for padding calc */
  }

  .bottom-bar button {
    font-weight: bolder;
    border: 0.1rem solid #5bbd99 !important;
    background-color: #343a40 !important;
  }
</style>