- Adding streams to a channel (per-row "Add to Channel" button and bulk "Add selected to Channel") now completes in a single PATCH request instead of three. Previously each operation called `API.updateChannel` (which internally triggered `requeryStreams`), then `requeryChannels()`. Both paths now use a dedicated `API.addStreamsToChannel()` method that issues only the PATCH, merges the existing channel streams with the newly added stream objects locally, and updates the store in-place, no `requeryStreams` or `requeryChannels` round-trips.
- Removed an unnecessary `requeryStreams()` call from `API.createChannelFromStream()`. Stream data does not change when a channel is created from it; the caller already calls `requeryChannels()` to display the new channel.
- Removed dead VOD URL routes: `VODPlaylistView` (playlist generation), `VODPositionView` (position tracking), and the class-based `VODStatsView` (replaced by the existing function-based `vod_stats` view).
- Removed dead `updateVODPosition()` API method from `frontend/src/api.js`, which called the now-removed position tracking endpoint.
- M3U account form: **Max Streams** field changed from a plain text input to a number input with increment/decrement controls, consistent with other integer fields.
- M3U account form: removed unused `useMantineTheme` import and `theme` variable.
Replace expanded inline cards with a ProgramDetailModal for viewing full program
details. Add real-time progress bars to currently-airing programs using direct DOM manipulation. Extract and display season/episode info from EPG data with a 3-tier fallback (custom_properties → onscreen_episode → description text).
Backend:
- Add ProgramDetailSerializer for rich EPG data (categories, credits, ratings, images, external IDs) served on the detail endpoint
- Add infer_is_live() for status badges (live, new, premiere, finale)
- Add shared S/E extraction utilities in apps/epg/utils.py
- Optimize querysets with select_related("epg")
Frontend:
- ProgramDetailModal with conditional field rendering and image fallback chain
- Progress bars via scaleX transform updated every second
- Parallel data fetching with Promise.all for channels + programs
- Browser tab visibility recovery for progress bars
- Now-line with triangle marker and sub-millisecond precision
- Card layout: title, season/episode + subtitle, time + badges
- Shared formatSeasonEpisode() and external URL helpers
- Add updateMe() API method for PATCH requests to /me/
- Add getNavOrder() to retrieve saved navigation order
- Add setNavOrder() to persist navigation order changes
- Add updateUserPreferences() with optimistic updates and rollback
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Backend:
- Add terminal status guard to stop() endpoint -prevents overwriting completed/interrupted/failed with "stopped" (returns 409 Conflict)
- Include currently-airing programs in series rule evaluation by filtering on end_time instead of start_time
- Clean up future recordings when deleting a series rule while preserving previously recorded episodes
- Add logo proxy negative cache to prevent repeated requests to unreachable hosts from blocking Daphne workers
- Add URL validation with HEAD-then-GET fallback and per-worker cache
- Add EPG time-slot matching (80% overlap threshold) to enrich manual recordings with program metadata
- Add multi-source poster resolution pipeline (EPG, VOD, TMDB, OMDb, TVMaze, iTunes) with URL validation at each stage
- Add editable recording metadata endpoint with user_edited flag to prevent EPG auto-overwrite
- Add refresh-artwork endpoint to re-run poster resolution on demand
- Batch-fetch PeriodicTask names in schedule_upcoming to avoid N+1
Frontend:
- Fix series modal showing only one episode — preserve _group_count from categorized prop when merging with store version so the episode list renders correctly
- Fix recording card button positioning — use flex column layout with marginTop auto so buttons align at the bottom regardless of content
- Add delete fallback in RecurringRuleModal for orphaned recordings from deleted rules
- Use end_time filter in upcoming episodes list to include currently-airing episodes
- Add inline metadata editing (title/description) in details modal
- Add refresh artwork button in details modal
- Replace hardcoded /logo.png fallbacks with imported default logo
- Add React.memo with custom comparator to RecordingCard
Tests:
- Add 21 EPG time-slot matching tests (overlap threshold, edge cases)
- Add 16 recording metadata tests (validation, artwork, logo cache)
- Add 17 URL validation tests (HEAD/GET fallback, caching, eviction)
File changes:
Backend
apps/channels/api_views.py — Added extend() action that uses queryset .update() to bypass signals, letting the running task pick up the new end_time via polling. Moved WS recording_stopped notification to synchronous (before HTTP response). Refactored destroy() to delete DB row first, send WS event immediately, defer cleanup to background thread.
apps/channels/signals.py — Added pre_save guard to skip task revocation when status is "recording". Added post_save reentrancy guard to skip artwork prefetch for internal field-only saves (custom_properties, task_id, end_time).
apps/channels/tasks.py — Added 2-second polling loop in streaming that checks for stop, deletion, and extended end_time. Added refresh_from_db() + merge before metadata save to prevent overwriting concurrent artwork prefetch. Replaced inline PeriodicTask cleanup with revoke_task()/_dvr_task_name(). Consolidated redundant DB queries in error path. Fixed TOCTOU os.path.exists + os.remove. Preserved "stopped" status in final-status logic instead of overwriting with "completed".
core/utils.py — Made send_websocket_update gevent-safe by detecting monkey-patching and offloading async_to_sync to gevent's native threadpool, fixing the event loop deadlock that caused cross-recording interference.
apps/proxy/ts_proxy/client_manager.py — Moved _trigger_stats_update to a background thread so remove_client() returns immediately.
apps/proxy/ts_proxy/stream_generator.py — Added Redis-based health check for non-owner workers in _should_send_keepalive(), so keepalives fire correctly even when stream_manager is None.
Frontend
frontend/src/WebSocket.jsx — Added 400ms debounced scheduleRecordingFetch() replacing all inline fetchRecordings() calls. Added recording_extended and recording_updated event handlers. recording_cancelled now does surgical removeRecording() by ID when available.
frontend/src/api.js — Added extendRecording(id, extraMinutes).
frontend/src/components/cards/RecordingCard.jsx — Added Extend menu (+15m/+30m/+1h) for in-progress recordings. Widened Comskip button to stopped/interrupted statuses.
frontend/src/components/forms/ProgramRecordingModal.jsx — Removed manual fetchRecordings() calls, relying on WS-driven debounced refresh.
frontend/src/components/forms/RecordingDetailsModal.jsx — Added stopped to playable statuses. Widened Comskip button. Removed manual fetchRecordings().
frontend/src/components/forms/RecurringRuleModal.jsx — Removed all manual fetchRecordings() calls, relying on WS events.
frontend/src/pages/Guide.jsx — Removed isLoading subscription that caused loading flash on debounced refresh. Removed manual fetchRecordings() after saving a series rule.
frontend/src/store/channels.jsx — Stripped isLoading/error state from fetchRecordings to prevent full-page loading indicators. Added no-op guards in removeRecording.
frontend/src/utils/cards/RecordingCardUtils.js — Added extendRecordingById wrapper.
Tests
apps/channels/tests/test_recording_extend.py (new) — 14 tests: extend endpoint validation, stacked extensions, signal bypass, pre_save guard behavior.
apps/channels/tests/test_recording_stop_cancel.py (new) — 18 tests: stop endpoint, DVR client teardown, cancel was_in_progress flag, run_recording race guards, signal reentrancy guards.
apps/channels/tests/test_ts_proxy_keepalive.py (new) — 21 tests: keepalive owner/non-owner logic, stats update error handling, client removal non-blocking, timing invariants.
apps/channels/tests/test_recording_scheduling.py — Updated mock assertion to match new _stop_dvr_clients call signature.
Summary:
Adds an Extend action for in-progress recordings that bypasses Django signals and lets the running task dynamically pick up the new end_time via its 2-second DB polling loop. Fixes cross-recording interference caused by send_websocket_update deadlocking the gevent event loop. Fixes an artwork race condition where run_recording overwrote concurrent prefetch data. Adds Redis-based keepalive health checks for non-owner workers to prevent DVR read timeouts during source transitions. Replaces manual fetchRecordings() calls throughout the frontend with a debounced WS-driven refresh. 53 new tests.
Fixes#940: Duplicate DVR task executions were caused by ClockedSchedule objects being shared across PeriodicTasks, triggering run_recording multiple
times for the same recording. Added an idempotency guard in run_recording that exits early if status is already 'recording', 'completed', or 'stopped'.
revoke_task() now deletes the PeriodicTask and orphaned ClockedSchedule on execution rather than relying on Celery revocation alone.
Fixes#454: Added POST /api/channels/recordings/{id}/stop/ action that marks the recording as stopped and terminates only the specific DVR proxy client (identified via User-Agent: Dispatcharr-DVR/recording-{id}) without disrupting
simultaneous recordings on the same or other channels. The API returns
immediately; DVR client teardown and task revocation happen in a background thread to avoid 504 timeouts on the recordings list endpoint.
Additional changes:
- destroy() now only calls _stop_dvr_clients() for in-progress recordings, preventing accidental stream termination when deleting completed recordings
- WebSocket events differentiated: recording_stopped, recording_cancelled (in-progress cancel), and recording_cancelled (delete) with was_in_progress flag so the frontend shows distinct "Recording deleted" vs "Recording cancelled" notifications
- Frontend: Stop and Cancel split into separate buttons with confirmation
modals; stopped recordings move immediately to Previously Recorded via
optimistic status bucketing; removed dead 'Stopped' badge state
- 27 new unit tests covering scheduling, idempotency, revocation, and DVR client isolation
Real-time notifications for system events and alerts
Per-user notification management and dismissal
Update check on startup and every 24 hours to notify users of available versions
Notification center UI component
Automatic cleanup of expired notifications
- Added a robust inline editing mode for the channels table, allowing users to quickly edit channel fields (name, number, group, EPG, logo) directly in the table without opening a modal.
- EPG and logo columns now support searchable dropdowns with instant filtering and keyboard navigation for fast assignment.
- Drag-and-drop reordering of channels enabled when unlocked, with persistent order updates.
- Group column now uses a searchable dropdown for quick group assignment, matching the UX of EPG and logo selectors.
- All editable cells provide clear focus, hover, and disabled states for improved accessibility and usability.
- Table unlock/edit mode toggle with clear visual cues and safe-guarded save logic to prevent accidental edits.
- All changes are saved via API with optimistic UI updates and error handling.
- Currently playing program title displayed with live broadcast indicator (green Radio icon)
- Expandable program descriptions via chevron button
- Efficient POST-based API endpoint (`/api/epg/current-programs/`) supporting batch channel queries or fetching all channels
- Smart scheduling that fetches new program data 5 seconds after current program ends
- Only polls when active channel list changes, not on stats refresh
- Channel preview button: Added preview functionality to active stream cards on stats page
System Event Logging:
- Add SystemEvent model with 15 event types tracking channel operations, client connections, M3U/EPG activities, and buffering events
- Log detailed metrics for M3U/EPG refresh operations (streams/programs created/updated/deleted)
- Track M3U/EPG downloads with client information (IP address, user agent, profile, channel count)
- Record channel lifecycle events (start, stop, reconnect) with stream and client details
- Monitor client connections/disconnections and buffering events with stream metadata
Event Viewer UI:
- Add SystemEvents component with real-time updates via WebSocket
- Implement pagination, filtering by event type, and configurable auto-refresh
- Display events with color-coded badges and type-specific icons
- Integrate event viewer into Stats page with modal display
- Add event management settings (retention period, refresh rate)
M3U/EPG Endpoint Optimizations:
- Implement content caching with 5-minute TTL to reduce duplicate processing
- Add client-based event deduplication (2-second window) using IP and user agent hashing
- Support HEAD requests for efficient preflight checks
- Cache streamed EPG responses while maintaining streaming behavior for first request
