// components/backup/index.js — Backup Center as a self-contained feature module.
//
// FIRST page migrated to the feature-module contract (docs/architecture/webui-architecture.md).
// The kernel drives mount()/unmount() for the /backup route instead of
// spa.js's handleBackup(). The heavy controller (backup-page.js, ~129KB) is
// still lazy-loaded on first mount, so cold-load cost is unchanged.
//
// Snap-out demo: deleting this folder removes the backup route's module
// registration; the manifest entry then falls back to the legacy handler
// (and, once handleBackup is retired, to the kernel's not-found route). The
// full decomposition of backup-page.js into per-tab modules is Phase 5.
LP.features.register({
  id: 'backup',
  routes: ['/backup', '/backup*'],
  // Controllers the feature needs; lazy-loaded on first mount (idempotent).
  // Controllers, organised by sub-system (tabs). core/ first: schema + base
  // class + the shared data/cron, then each tab's prototype-augment clusters.
  scripts: [
    '/components/backup/core/js/backup-schema.js',
    '/components/backup/core/js/backup-page.js',          // base: class + constructor + init/switchTab/render
    '/components/backup/core/js/backup-fetch-client.js',
    '/components/backup/core/js/backup-cron-schedule.js',
    '/components/backup/dashboard/js/backup-dashboard.js',
    '/components/backup/snapshots/js/backup-snapshots.js',
    '/components/backup/snapshots/js/backup-snapshot-actions.js',
    '/components/backup/locations/js/backup-locations.js',
    '/components/backup/locations/js/backup-location-fields.js',
    '/components/backup/locations/js/backup-location-modal.js',
    '/components/backup/locations/js/backup-ssh-key.js',
    '/components/backup/configuration/js/backup-configuration.js',
    '/components/backup/configuration/js/backup-retention-presets.js',
    '/components/backup/configuration/js/backup-engine-details.js',
    '/core/backup-card/js/backup-app-card.js',
  ],

  async mount(ctx) {
    await ctx.loadScripts(this.scripts);
    const html = await ctx.loadFragment('/components/backup/core/html/backup-content.html');
    ctx.setContent(html, 'Backups');
    if (typeof BackupPage === 'undefined') {
      throw new Error('BackupPage controller failed to load');
    }
    window.backupPage = new BackupPage();
    await window.backupPage.init();
  },

  async unmount(ctx) {
    // Release the page's document listeners + task-refresh registration so a
    // navigation away doesn't leave stale BackupPage listeners firing on the
    // live DOM — the backup sidebar "content stacks on revisit" bug. dispose()
    // aborts the click/input/change listeners and drops the coordinator reg.
    try { window.backupPage && window.backupPage.dispose(); } catch (_) {}
    try { ctx.services.tasks.refresh && ctx.services.tasks.refresh.unregister('backups'); } catch (_) {}
    window.backupPage = null;
  },
});