drk-blutspende-orte/docs/changelog.md

Changelog

Notable changes to the app. Newest first.

2026-09-07 — map tiles switched to OpenStreetMap

folium.Map(tiles="CartoDB positron") began showing an "API KEY REQUIRED" watermark (Carto moved its basemaps behind a key). Switched to tiles="OpenStreetMap" via a new MAP_TILES constant — no key required. OSM standard tiles are more colourful than positron was; MAP_TILES makes swapping the provider a one-line change.

2026-09-07 — UI/UX pass

A round of usability improvements aimed at the non-technical user (see improvements.md).

• Larger UI font (UI_FONT_SIZE = 11) applied to all default fonts, menus, dialogs and the Treeview (taller rows).
• DRK-red header bar with the app name; window title shows the total count ("… · 142 Einsätze"); simple red-cross window icon drawn at runtime (also written to data/icon.png for the launcher).
• Status bar is now colour-coded by severity (grey/green/orange/red), and transient messages auto-clear after 8 s back to a neutral state; queue-count messages stay put.
• Tab 1: more spacing in the form; PLZ field accepts digits only; "+ Hinzufügen" is a solid button; explicit "Auswahl entfernen" button and Delete key for queue rows; "Warteschlange leeren" now asks for confirmation; duplicate save shows a modal (list + "trotzdem speichern?") instead of a transient hint.
• Tab 2: the raw lat/lon columns are replaced by a single "Karte" column (✓ / red fehlt); active sort column shows a ▲/▼ arrow; the hint line always shows the saved-entry count.
• "Karte öffnen" with no coordinates now shows a dialog, not just a status line.
• Window size & position are remembered between sessions (data/window.json).

2026-09-07 — data safety, robustness, easier input

Addressed the top three findings from improvements.md.

Data safety (DataStore)

• All writes (append / update / delete) now rebuild the full DataFrame and go through _save_csv: rotating backup to data/backups/ (startup + before every change, keep 20, skip if unchanged) then atomic write (tmp + fsync + os.replace).
• orte.csv missing / empty (EmptyDataError) / unreadable now falls back to an empty table or the newest backup instead of crashing.

Geocoder robustness (GeocoderWorker, geocode_city)

• Each queue item runs inside try/except; a failing lookup or callback logs a traceback and the worker keeps going (previously an unexpected error killed the thread and silently froze all further geocoding).
• geocode_city raises GeocodingUnavailable when every query failed on a service/network error. After 3 in a row the app shows a one-time "Standortdienst nicht erreichbar" dialog; entries still save without coordinates.

Easier, safer input

• Date fields (entry form + edit dialog) are now ttkbootstrap.DateEntry calendar pickers, validated/normalized to ISO by parse_date() (also accepts TT.MM.JJJJ). Invalid dates are rejected with a dialog.
• Edit dialog has manual Breitengrad / Längengrad fields for fixing coordinates by hand.
• Tab 2: rows without coordinates shown in red, "Nur ohne Koordinaten" filter, count in the hint line, right-click Koordinaten suchen.

Housekeeping

• git init + .gitignore.
• Rotating log file at data/app.log (_setup_logging).
• Shared helpers filter_locations / split_city_plz / parse_coord replace duplicated combobox code.
• Config constants: GEOCODE_REGIONS, MAP_DEFAULT_CENTER, MAP_DEFAULT_ZOOM, MAX_BACKUPS.
• generate_map fits the view to the markers.

Verification

Non-GUI smoke tests (helpers, DataStore backup/atomic/recovery, geocoder resilience) pass. The GUI now can be built and driven on the dev Mac via a Homebrew Python with Tk 9 — see dev-notes.md.