gui-video-clipper/src/App.svelte

<script lang="ts">
  import UrlInput from '$lib/components/UrlInput.svelte';
  import VideoPlayer from '$lib/components/VideoPlayer.svelte';
  import TransportControls from '$lib/components/TransportControls.svelte';
  import Timeline from '$lib/components/Timeline.svelte';
  import ClipList from '$lib/components/ClipList.svelte';
  import StatusBar from '$lib/components/StatusBar.svelte';
  import SetupWizard from '$lib/components/SetupWizard.svelte';
  import PreferencesPanel from '$lib/components/PreferencesPanel.svelte';
  import ExportDialog from '$lib/components/ExportDialog.svelte';
  import AboutDialog from '$lib/components/AboutDialog.svelte';
  import ProcessingModal from '$lib/components/ProcessingModal.svelte';
  import { loadPreferences } from '$lib/stores/preferences.svelte';
  import { getSelectedClipId, removeClip } from '$lib/stores/clips.svelte';
  import { adjustShuttle, resetShuttleRate } from '$lib/transport/playback';
  import { session } from '$lib/stores/videoSession.svelte';
  import { listen } from '@tauri-apps/api/event';
  import type { TransportKeyAction } from '$lib/transport/playback';

  let showSetupWizard = $state(true);
  let showPreferences = $state(false);
  let showExportDialog = $state(false);
  let showAboutDialog = $state(false);
  let shuttleRate = $state(1);

  let transportControls = $state<TransportControls | null>(null);

  // Resizable split: timeline height in px (clip list gets the rest)
  let timelineHeight = $state(180);
  let isResizing = $state(false);
  let resizeStartY = $state(0);
  let resizeStartHeight = $state(0);
  let splitAreaEl = $state<HTMLDivElement | null>(null);

  $effect(() => {
    loadPreferences();
  });

  // Listen for native macOS menu "About" action
  $effect(() => {
    const unlisten = listen('open-about', () => {
      showAboutDialog = true;
    });
    return () => { unlisten.then((fn) => fn()); };
  });

  $effect(() => {
    if (session.status === 'resolving') {
      shuttleRate = 1;
      resetShuttleRate();
    }
  });

  function dispatchTransport(action: TransportKeyAction) {
    transportControls?.handleKeyAction(action);
  }

  function handleResizeStart(e: MouseEvent) {
    e.preventDefault();
    isResizing = true;
    resizeStartY = e.clientY;
    resizeStartHeight = timelineHeight;
  }

  function handleResizeMove(e: MouseEvent) {
    if (!isResizing || !splitAreaEl) return;
    const delta = e.clientY - resizeStartY;
    const totalHeight = splitAreaEl.clientHeight;
    const newHeight = Math.max(40, Math.min(totalHeight - 20, resizeStartHeight + delta));
    timelineHeight = newHeight;
  }

  function handleResizeEnd() {
    isResizing = false;
  }

  function handleGlobalKeydown(e: KeyboardEvent) {
    const target = e.target as HTMLElement;
    if (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA') return;

    switch (e.key) {
      case ' ':
        e.preventDefault();
        dispatchTransport('play-pause');
        break;
      case ',':
        e.preventDefault();
        dispatchTransport(e.shiftKey ? 'keyframe-back' : 'frame-back');
        break;
      case '.':
        e.preventDefault();
        dispatchTransport(e.shiftKey ? 'keyframe-forward' : 'frame-forward');
        break;
      case 'ArrowLeft':
        e.preventDefault();
        dispatchTransport(e.shiftKey ? 'seek-back-1' : 'seek-back-5');
        break;
      case 'ArrowRight':
        e.preventDefault();
        dispatchTransport(e.shiftKey ? 'seek-forward-1' : 'seek-forward-5');
        break;
      case 'i':
      case 'I':
        e.preventDefault();
        dispatchTransport('mark-in');
        break;
      case 'o':
      case 'O':
        e.preventDefault();
        dispatchTransport('mark-out');
        break;
      case 'j':
      case 'J':
        e.preventDefault();
        shuttleRate = adjustShuttle(-1, shuttleRate);
        break;
      case 'k':
      case 'K':
        e.preventDefault();
        dispatchTransport('play-pause');
        break;
      case 'l':
      case 'L':
        e.preventDefault();
        shuttleRate = adjustShuttle(1, shuttleRate);
        break;
      case 'Delete':
      case 'Backspace': {
        e.preventDefault();
        const selectedId = getSelectedClipId();
        if (selectedId) removeClip(selectedId);
        break;
      }
      case 'a':
        if (e.metaKey) {
          e.preventDefault();
        }
        break;
      case 'e':
        if (e.metaKey) {
          e.preventDefault();
          showExportDialog = true;
        }
        break;
      case '/':
        if (e.metaKey) {
          e.preventDefault();
          showAboutDialog = true;
        }
        break;
      default:
        break;
    }
  }
</script>

<svelte:window
  onkeydown={handleGlobalKeydown}
  onmousemove={handleResizeMove}
  onmouseup={handleResizeEnd}
/>

{#if showSetupWizard}
  <SetupWizard onComplete={() => (showSetupWizard = false)} />
{/if}

{#if showPreferences}
  <PreferencesPanel onClose={() => (showPreferences = false)} />
{/if}

{#if showExportDialog}
  <ExportDialog onClose={() => (showExportDialog = false)} />
{/if}

{#if showAboutDialog}
  <AboutDialog onClose={() => (showAboutDialog = false)} />
{/if}

{#if session.processingStep !== 'idle' && session.processingStep !== 'done'}
  <ProcessingModal />
{/if}

<div class="app-shell">
  <header class="toolbar">
    <UrlInput />
    <button class="about-btn" onclick={() => (showAboutDialog = true)} title="About">ℹ</button>
    <button class="prefs-btn" onclick={() => (showPreferences = true)} title="Preferences">⚙</button>
  </header>

  <main class="content">
    <VideoPlayer />
    <TransportControls bind:this={transportControls} />
    <div class="timeline-clip-area" bind:this={splitAreaEl}>
      <div class="timeline-pane" style="height: {timelineHeight}px">
        <Timeline />
      </div>
      <div
        class="resize-handle"
        class:active={isResizing}
        role="slider"
        aria-orientation="horizontal"
        aria-label="Resize timeline and clip list"
        aria-valuenow={timelineHeight}
        aria-valuemin={40}
        aria-valuemax={500}
        tabindex="0"
        onmousedown={handleResizeStart}
        onkeydown={(e) => {
          if (e.key === 'ArrowDown') {
            e.preventDefault();
            timelineHeight = Math.min(500, timelineHeight + 10);
          } else if (e.key === 'ArrowUp') {
            e.preventDefault();
            timelineHeight = Math.max(40, timelineHeight - 10);
          }
        }}
      ></div>
      <div class="cliplist-pane">
        <ClipList onExport={() => (showExportDialog = true)} />
      </div>
    </div>
  </main>

  <StatusBar onOpenAbout={() => (showAboutDialog = true)} />
</div>

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

  .toolbar {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    gap: 8px;
  }

  .content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  .timeline-clip-area {
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    min-height: 80px;
  }

  .timeline-pane {
    flex-shrink: 0;
    min-height: 40px;
    overflow: hidden;
  }

  .resize-handle {
    height: 5px;
    background: var(--border, #353550);
    cursor: ns-resize;
    flex-shrink: 0;
    transition: background 0.1s;
  }

  .resize-handle:hover,
  .resize-handle.active {
    background: var(--accent, #89b4fa);
  }

  .cliplist-pane {
    flex: 1;
    min-height: 20px;
    overflow: hidden;
  }

  .about-btn {
    font-size: 16px;
    padding: 4px 8px;
  }

  .prefs-btn {
    font-size: 18px;
    padding: 4px 8px;
  }
</style>