infoscreen/TECH-CHANGELOG.md

TECH-CHANGELOG

This changelog documents technical and developer-relevant changes included in public releases. For development workspace changes, see DEV-CHANGELOG.md. Not all changes here are reflected in the user-facing changelog (program-info.json), and not all UI/feature changes are repeated here. Some changes (e.g., backend refactoring, API adjustments, infrastructure, developer tooling, or internal logic) may only appear in TECH-CHANGELOG.md. For UI/feature changes, see dashboard/public/program-info.json.

---

2025.1.0-alpha.12 (2025-11-27)

Backend rework (post-release notes; no version bump):

• 🧩 Dev Container hygiene: Remote Containers runs on UI (remote.extensionKind), removed in-container install to prevent reappearance loops; switched postCreateCommand to npm ci for reproducible dashboard installs; postStartCommand aliases made idempotent.
• 🔄 Serialization: Consolidated snake_case→camelCase via server/serializers.py for all JSON outputs; ensured enums/UTC datetimes serialize consistently across routes.
• 🕒 Time handling: Normalized naive timestamps to UTC in all back-end comparisons (events, scheduler, groups) and kept ISO strings without Z in API responses; frontend appends Z.
• 📡 Streaming: Stabilized range-capable endpoint (/api/eventmedia/stream/<media_id>/<filename>), clarified client handling; scheduler emits basic HEAD-probe metadata (mime_type, size, accept_ranges).
• 📅 Recurrence/exceptions: Ensured EXDATE tokens (RFC 5545 UTC) align with occurrence start; detached-occurrence flow confirmed via POST /api/events/<id>/occurrences/<date>/detach.
• 🧰 Routes cleanup: Applied dict_to_camel_case() before jsonify() uniformly; verified Session lifecycle consistency (open/commit/close) across blueprints.
• 🔄 API Naming Convention Standardization:
  • Created server/serializers.py with dict_to_camel_case() and dict_to_snake_case() utilities for consistent JSON serialization
  • Events API refactored: GET /api/events and GET /api/events/<id> now return camelCase JSON (id, subject, startTime, endTime, type, groupId, etc.) instead of PascalCase
  • Internal event dictionaries use snake_case keys, then converted to camelCase via dict_to_camel_case() before jsonify()
  • Breaking: External API consumers must update field names from PascalCase to camelCase
• ⏰ UTC Time Handling:
  • Standardized datetime handling: Database stores timestamps in UTC (naive timestamps normalized by backend)
  • API returns ISO strings without 'Z' suffix: "2025-11-27T20:03:00"
  • Frontend appends 'Z' to parse as UTC and displays in user's local timezone via toLocaleTimeString('de-DE')
  • All time comparisons use UTC; date.toISOString() sends UTC back to API
• 🖥️ Dashboard Major Redesign:
  • Completely redesigned dashboard with card-based layout for Raumgruppen (room groups)
  • Global statistics summary card: total infoscreens, online/offline counts, warning groups
  • Filter buttons with dynamic counts: All, Online, Offline, Warnings
  • Active event display per group: shows currently playing content with type icon, title, date ("Heute"/"Morgen"/date), and time range
  • Health visualization: color-coded progress bars showing online/offline ratio per group
  • Expandable client details: shows last alive timestamps with human-readable format ("vor X Min.", "vor X Std.", "vor X Tagen")
  • Bulk restart functionality: restart all offline clients in a group
  • Manual refresh button with toast notifications
  • 15-second auto-refresh interval
  • "Nicht zugeordnet" group always appears last in sorted list
• 🎨 Frontend Technical:
  • Dashboard (dashboard/src/dashboard.tsx): Uses Syncfusion ButtonComponent, ToastComponent, and card CSS classes
  • Appointments page updated to map camelCase API responses to internal PascalCase for Syncfusion compatibility
  • Time formatting functions (formatEventTime, formatEventDate) handle UTC string parsing with 'Z' appending
  • TypeScript lint errors resolved: unused error variables removed, null safety checks added with optional chaining
• 📖 Documentation:
  • Updated .github/copilot-instructions.md with comprehensive sections on:
    • API patterns: JSON serialization, datetime handling conventions
    • Frontend patterns: API response format, UTC time parsing
    • Dashboard page overview with features
    • Conventions & gotchas: datetime and JSON naming guidelines
  • Updated README.md with recent changes, API response format section, and dashboard page details

Notes for integrators:

• Breaking change: All Events API endpoints now return camelCase field names. Update client code accordingly.
• Frontend must append 'Z' to API datetime strings before parsing: const utcStr = dateStr.endsWith('Z') ? dateStr : dateStr + 'Z'; new Date(utcStr);
• Use dict_to_camel_case() from server/serializers.py for any new API endpoints returning JSON
• Dev container: prefer npm ci and UI-only Remote Containers to avoid extension drift in-container.

---

Component build metadata template (for traceability)

Record component builds under the unified app version when releasing:

Component builds for this release
- API: image tag `ghcr.io/robbstarkaustria/api:<short-sha>` (commit `<sha>`)
- Dashboard: image tag `ghcr.io/robbstarkaustria/dashboard:<short-sha>` (commit `<sha>`)
- Scheduler: image tag `ghcr.io/robbstarkaustria/scheduler:<short-sha>` (commit `<sha>`)
- Listener: image tag `ghcr.io/robbstarkaustria/listener:<short-sha>` (commit `<sha>`)
- Worker: image tag `ghcr.io/robbstarkaustria/worker:<short-sha>` (commit `<sha>`)

This is informational (build metadata) and does not change the user-facing version number.

2025.1.0-alpha.11 (2025-11-05)

• 🗃️ Data model & API:
  • Added muted (Boolean) to Event with Alembic migration; create/update and GET endpoints now accept, persist, and return muted alongside autoplay, loop, and volume for video events.
  • Video event fields consolidated: event_media_id, autoplay, loop, volume, muted.
• 🔗 Streaming:
  • Added range-capable streaming endpoint: GET /api/eventmedia/stream/<media_id>/<filename> (supports byte-range requests 206 for seeking).
  • Scheduler: Performs a best-effort HEAD probe for video stream URLs and includes basic metadata in the emitted payload (mime_type, size, accept_ranges). Placeholders added for duration, resolution, bitrate, qualities, thumbnails, checksum.
• 🖥️ Frontend/Dashboard:
  • Settings page refactored to nested tabs with controlled tab selection (selectedItem) to prevent sub-tab jumps.
  • Settings → Events → Videos: Added system-wide defaults with load/save via system settings keys: video_autoplay, video_loop, video_volume, video_muted.
  • Event modal (CustomEventModal): Exposes per-event video options including “Ton aus” (muted) and initializes all video fields from system defaults when creating new events.
  • Academic Calendar (Settings): Merged “Schulferien Import” and “Liste” into a single sub-tab “📥 Import & Liste”.
• 📖 Documentation:
  • Updated README.md and .github/copilot-instructions.md for video payload (incl. muted), streaming endpoint (206), nested Settings tabs, and video defaults keys; clarified client handling of video payloads.
  • Updated dashboard/public/program-info.json (user-facing changelog) and bumped version to 2025.1.0-alpha.11 with corresponding UI/UX notes.

Notes for integrators:

• Clients should parse event_type and handle the nested video payload, honoring autoplay, loop, volume, and muted. Use the streaming endpoint with HTTP Range for seeking.
• System settings keys for video defaults: video_autoplay, video_loop, video_volume, video_muted.

2025.1.0-alpha.10 (2025-10-25)

• No new developer-facing changes in this release.
• UI/UX updates are documented in dashboard/public/program-info.json:
  • Event modal: Surfaced video options (Autoplay, Loop, Volume).
  • FileManager: Increased upload limits (Full-HD); client-side duration validation (max 10 minutes).

2025.1.0-alpha.9 (2025-10-19)

• 🗓️ Events/API:
  • Implemented new webuntis event type. Event creation now resolves the URL from the system setting supplement_table_url; returns 400 if unset.
  • Removed obsolete webuntis-url settings endpoints. Use GET/POST /api/system-settings/supplement-table for URL and enabled state (shared for WebUntis/Vertretungsplan).
  • Initialization defaults: dropped webuntis_url; updated supplement_table_url description to “Vertretungsplan / WebUntis”.
• 🚦 Scheduler payloads:
  • Unified Website/WebUntis payload: both emit a nested website object { "type": "browser", "url": "…" }; event_type remains either website or webuntis for dispatch.
  • Payloads now include a top-level event_type string for all events to aid client dispatch.
• 🖥️ Frontend/Dashboard:
  • Program info updated to 2025.1.0-alpha.13 with release notes.
  • Settings → Events: WebUntis now uses the existing Supplement-Table URL; no separate WebUntis URL field.
  • Event modal: WebUntis type behaves like Website (no per-event URL input).
• 📖 Documentation:
  • Added MQTT_EVENT_PAYLOAD_GUIDE.md (message structure, client best practices, versioning).
  • Added WEBUNTIS_EVENT_IMPLEMENTATION.md (design notes, admin setup, testing checklist).
  • Updated .github/copilot-instructions.md and README.md for the unified Website/WebUntis handling and settings usage.

Notes for integrators:

• If you previously integrated against /api/system-settings/webuntis-url, migrate to /api/system-settings/supplement-table.
• Clients should now parse event_type and use the corresponding nested payload (presentation, website, …). webuntis and website should be handled identically (nested website payload).

2025.1.0-alpha.8 (2025-10-18)

• 🛠️ Backend: Seeded presentation defaults (presentation_interval, presentation_page_progress, presentation_auto_progress) in system settings; applied on event creation.
• 🗃️ Data model: Added page_progress and auto_progress fields to Event (with Alembic migration).
• 🗓️ Scheduler: Now publishes only currently active events per group (at "now"); clears retained topics by publishing [] for groups with no active events; normalizes naive timestamps and compares times in UTC; presentation payloads include page_progress and auto_progress.
• 🖥️ Dashboard: Settings → Events tab now includes Presentations defaults (interval, page-progress, auto-progress) with load/save via API; event modal applies defaults on create and persists per-event values on edit.
• 📖 Docs: Updated README and Copilot instructions for new scheduler behavior, UTC handling, presentation defaults, and per-event flags.

---

2025.1.0-alpha.11 (2025-10-16)

• ✨ Settings page: New tab layout (Syncfusion) with role-based visibility – Tabs: 📅 Academic Calendar, 🖥️ Display & Clients, 🎬 Media & Files, 🗓️ Events, ⚙️ System.
• 🛠️ Settings (Technical): API calls now use relative /api paths via the Vite proxy (prevents CORS and double /api).
• 📖 Docs: README updated for settings page (tabs) and system settings API.

2025.1.0-alpha.10 (2025-10-15)

• 🔐 Auth: Login and user management implemented (role-based, persistent sessions).
• 🧩 Frontend: Syncfusion SplitButtons integrated (react-splitbuttons) and Vite config updated for pre-bundling.
• 🐛 Fix: Import error ‘@syncfusion/ej2-react-splitbuttons’ – instructions added to README (optimizeDeps + volume reset).

2025.1.0-alpha.9 (2025-10-14)

• ✨ UI: Unified deletion workflow for appointments – all types (single, single instance, entire series) handled with custom dialogs.
• 🔧 Frontend: Syncfusion RecurrenceAlert and DeleteAlert intercepted and replaced with custom dialogs (including final confirmation for series deletion).
• 📖 Docs: README and Copilot instructions expanded for deletion workflow and dialog handling.

2025.1.0-alpha.8 (2025-10-11)

• 🎨 Theme: Migrated to Syncfusion Material 3; centralized CSS imports in main.tsx
• 🧹 Cleanup: Tailwind CSS completely removed (packages, PostCSS, Stylelint, config files)
• 🧩 Group management: "infoscreen_groups" migrated to Syncfusion components (Buttons, Dialogs, DropDownList, TextBox); improved spacing
• 🔔 Notifications: Unified toast/dialog wording; last alert usage replaced
• 📖 Docs: README and Copilot instructions updated (Material 3, centralized styles, no Tailwind)

2025.1.0-alpha.7 (2025-09-21)

• 🧭 UI: Period selection (Syncfusion) next to group selection; compact layout
• ✅ Display: Badge for existing holiday plan + counter ‘Holidays in view’
• 🛠️ API: Endpoints for academic periods (list, active GET/POST, for_date)
• 📅 Scheduler: By default, no scheduling during holidays; block display like all-day event; black text color
• 📤 Holidays: Upload from TXT/CSV (headless TXT uses columns 2–4)
• 🔧 UX: Switches in a row; dropdown widths optimized

2025.1.0-alpha.6 (2025-09-20)

• 🗓️ NEW: Academic periods system – support for school years, semesters, trimesters
• 🏗️ DATABASE: New 'academic_periods' table for time-based organization
• 🔗 EXTENDED: Events and media can now optionally be linked to an academic period
• 📊 ARCHITECTURE: Fully backward-compatible implementation for gradual rollout
• ⚙️ TOOLS: Automatic creation of standard school years for Austrian schools

2025.1.0-alpha.5 (2025-09-14)

• Backend: Complete redesign of backend handling for group assignments of new clients and steps for changing group assignment.

2025.1.0-alpha.4 (2025-09-01)

• Deployment: Base structure for deployment tested and optimized.
• FIX: Program error when switching view on media page fixed.

2025.1.0-alpha.3 (2025-08-30)

• NEW: Program info page with dynamic data, build info, and changelog.
• NEW: Logout functionality implemented.
• FIX: Sidebar width corrected in collapsed state.

2025.1.0-alpha.2 (2025-08-29)

• INFO: Analysis and display of used open-source libraries.

2025.1.0-alpha.1 (2025-08-28)

• Initial project setup and base structure.