Alby96andClaude Opus 5
f3a0e3794a
Drops forecasts, lightning, the home-screen widget and advertising. What remains is radar on a map, the official ARPA alert bulletin, and rain notifications. The base map is now OpenFreeMap's Positron style: real OpenStreetMap vector tiles with no API key, no registration, no request limits and commercial use permitted. Every other free tier — MapTiler, Stadia, Jawg, Thunderforest — needs a key, which is a secret to manage, a quota to outgrow and a signup to complete before anyone can build the project, and the map is the one thing the app cannot work without. Positron rather than Liberty or Bright because the radar overlay has to be the loudest thing on screen, and a desaturated grey base is built to sit under data. Its style JSON carries no `attribution` field, so MapLibre displays no credits by itself. The app renders them from the region config instead: the two mandatory credits, OpenStreetMap and OpenMapTiles, go in the always-visible bar, and OpenFreeMap's own credit — optional by their terms — is listed on the Sources screen with the rest. The bundled offline style is still reachable with MAP_STYLE_URL=offline, and still claims no base map attribution, because crediting OpenStreetMap while showing it would be a false claim. Radar-DPC stays the source. ARPA Piemonte's own radar remains a disabled stub for two reasons that belong to the project owner, not to the code: the real-time access link is only issued by email, and the open-data page states the data is "gratuiti" and nothing else. Free of charge is not a licence, and rendering those volumes into frames served from a CDN is redistribution. Both questions go in the same email. An earlier draft of the docs recorded ARPA radar as CC BY 4.0; the source page does not support that, so the claim is removed rather than carried forward. The documentation is updated throughout rather than annotated: CLAUDE.md gains an explicit scope boundary, data-sources drops MET Norway and ISTAT and gains the base map, licenses records that free of charge is not a licence, privacy loses the whole advertising section, and the roadmap is renumbered so the backend worker is next — until it exists, DpcRadarSource has nothing to read. licenses.md keeps Open-Meteo and Blitzortung listed as excluded even though the features that would have used them are gone: both are non-commercial-only, ads are a plausible future, and neither should be adopted on the grounds that there are none today. Verified: analyze clean, 130 tests passing, and on the emulator the radar overlay sits correctly over Piedmont on real OSM tiles with Turin, Milan and Genoa labelled, the age reads "Aggiornato 4 minuti fa", and the Sources screen lists all five credits with their licences. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
176 lines
7.8 KiB
Markdown
176 lines
7.8 KiB
Markdown
# Roadmap
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Each milestone ends with `tool/verify.ps1` green and one commit. A milestone is not
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done until its acceptance criteria hold, **and until it has been seen running on the
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emulator** — twice now that step has caught defects the tests did not.
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Legend: ✅ done · 🔨 in progress · ⛔ blocked on something the project owner must supply
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> **Scope**: radar on a map, official alerts, rain notifications. Forecasts, lightning,
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> a home-screen widget and advertising are all out — see CLAUDE.md.
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---
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## M0 — Toolchain and repository hygiene ✅
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Flutter 3.47.3 stable, Android SDK (platform-tools, platform 36, build-tools 36.0.0),
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JDK 21, environment variables. Commit the removal of the old Xamarin skeleton.
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**Done.** `flutter doctor -v` reports "No issues found!". Installed: Flutter 3.47.3 at
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`C:\src\flutter` (telemetry disabled), Android SDK at `C:\Android\Sdk` with platform 36,
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build-tools 36.0.0, platform-tools and all licences accepted, and `JAVA_HOME` pointing at
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the JDK 21 a previous Visual Studio install had already left on the machine.
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## M1 — Scaffold, Italian l10n, region config, CI ✅
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`flutter create` with applicationId `it.nuvolari.app`; `flutter_localizations` + `intl`
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with `app_it.arb` as template and no hardcoded UI strings; `RegionConfig` loaded from
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`assets/regions/piemonte.json` with parsing tests; `.gitignore`, `env.example.json`,
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`tool/verify.ps1`, `.gitea/workflows/ci.yml`.
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**Done.** All four stages green; the AAB carries applicationId `it.nuvolari.app`,
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minSdk 24, targetSdk 36. Tests assert against the shipped Piemonte asset and a captured
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copy of the live ARPA CAP feed.
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> The Gitea instance may have no Actions runner. The workflow file is written to be
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> GitHub-Actions compatible, but `tool/verify.ps1` is the verification that must pass.
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## M2 — Map, attribution, Sources screen ✅
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MapLibre on OpenStreetMap tiles, permanent OSM/OpenMapTiles attribution, and a
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Sources / Licenses / Disclaimer screen with the explicit "not an official app"
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disclaimer.
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**Done and verified on the emulator.** The attribution bar lists only the sources
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actually rendered — crediting OpenStreetMap while showing the offline fallback would be
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a false attribution — and sits below the map, inside a SafeArea, so neither a map control
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nor the system gesture pill can cover a credit the licences require to be visible.
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Running it caught two defects the unit tests could not: the configured initial zoom put
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the viewport entirely inside the region so the map read as a blank expanse, and the
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attribution bar sat behind the gesture pill. The camera now fits the region bounds at
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runtime, which works at any screen size.
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## M3 — Animation and timeline ✅
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`RadarSource` with `MockRadarSource` (synthetic frames in assets), `DpcRadarSource`
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(reads our CDN) and `ArpaRadarSource` (disabled stub). Timeline scrubber, play/pause,
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adjacent-frame prefetch, `FrameCache` LRU, animation suspended in background, graceful
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degradation with a data-age banner.
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**Done and verified on the emulator.** The overlay is double buffered, the timeline
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lands on the newest frame, playback advances and wraps, scrubbing takes over from
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playback, and the legend is drawn from the manifest rather than a constant.
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Running it caught three more defects:
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- The notifier wrote to `state` from inside `build()`, which Riverpod rejects as an
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uninitialised provider. This broke startup, not just tests.
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- Eight-month-old demo frames rendered as "Aggiornato 342535 minuti fa". The age
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formatter now steps up to hours and days.
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- Demo mode sat permanently behind a stale-data warning, so it never showed the
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working state it exists to demonstrate. `MockRadarSource` now shifts the bundled
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timestamps onto the present, leaving images, order and spacing untouched.
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Frame caching is in memory only for now: mock frames are already in the asset bundle
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and a disk layer belongs with the network adapter, where it would save a real request.
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---
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## M4 — Backend worker ⛔
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The critical path. Until this exists, `DpcRadarSource` has nothing to read and the app
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can only show demo frames.
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`backend/nuvolari_worker/`: `dpc_client` (with the `origin` header), `crop` (bbox +
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reproject to EPSG:3857 — the source CRS is read from each file, never assumed),
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`palette` (dBZ colormap, legend exported into the manifest), `render` (RGBA PNG,
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transparent below threshold), `manifest`, and a `publisher/` with `LocalPublisher` and
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`S3Publisher`. Also fetches the ARPA CAP bulletin and publishes `alerts.json`, so the
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app never polls ARPA directly.
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WebSocket trigger on `wss://radar-wss.protezionecivile.it`, with a 5-minute cron as
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fallback.
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**Accepts when:** `python -m pytest` passes and one full run produces PNGs plus a
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`manifest.json` that the app consumes from a local server, showing real Piedmont
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precipitation on the emulator.
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**Blocked on (publishing only):** VPS / object storage endpoint and credentials.
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Development proceeds against `LocalPublisher` and a LAN `python -m http.server`.
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## M5 — Official alerts
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`ArpaCapAlertSource` reading `alerts.json` from our CDN. Zones `Piem-A`…`Piem-M` with
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levels shown **verbatim** and a link to the official bulletin next to every one.
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Six level values, not four: `VERDE`, `GIALLO`, `ARANCIONE`, `ROSSO`, plus `BIANCO`
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(avalanche scale, out of season) and `-` (not published). `BIANCO` and `-` are their own
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state and must never be collapsed into `VERDE` — that would report "no alert" where the
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bulletin reports "not assessed".
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**Accepts when:** the eleven zones render with the levels the live feed carries, the
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captured fixture parses, and every alert view links the official bulletin.
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## M6 — Rain notifications ⛔
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FCM topics per geographic cell, subscribed **from the device**, so no user location ever
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reaches a server. The worker publishes per-cell rain state.
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**Accepts when:** subscribing and unsubscribing works, and a published cell state
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produces a notification on the emulator.
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**Blocked on:** Firebase project and `google-services.json`.
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## M7 — Play Store release preparation ⛔
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Signing config reading `key.properties`, release AAB, target API 36, privacy policy,
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store listing copy, Data safety declaration, prominent disclosure for location.
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Data safety is unusually simple here: no advertising, no analytics, no accounts, and no
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location leaving the device.
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**Blocked on:** upload keystore and Play Console account.
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---
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## Pending inputs from the project owner
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| Needed for | Item |
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|---|---|
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| M4 | VPS / object storage endpoint and credentials |
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| M6 | Firebase project and `google-services.json` |
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| M7 | Play Console account and upload keystore |
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| ARPA radar adapter | The email to `info.meteo@arpa.piemonte.it` asking for the real-time access link **and the reuse licence**. Free of charge is not a licence, and without stated terms the frames cannot be republished. |
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Nothing is needed for the base map: OpenFreeMap requires no key and no account.
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---
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## Verifying on the emulator
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An AVD named `nuvolari` is set up on this machine: API 36.1, `google_apis`, x86_64,
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GPU passthrough to the host. It uses a 2 GB data partition and no SD card because disk
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is tight, and quickboot snapshots are disabled — they cost 2.6 GB to save a few seconds
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of boot, which is the wrong trade here. Expect a cold boot of a minute or so.
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In VS Code, just press **F5**: every emulator debug configuration boots it first. From a
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shell:
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```bash
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# Boot it (idempotent — returns at once if a device is attached)
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powershell -File tool/start_emulator.ps1
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# Build, install, launch
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cd app
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flutter build apk --debug
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adb install -r build/app/outputs/flutter-apk/app-debug.apk
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adb shell am start -n it.nuvolari.app/.MainActivity
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# Capture what it looks like
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adb exec-out screencap -p > screen.png
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```
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`flutter run -d emulator-5554` works too and gives hot reload; the steps above are what
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a non-interactive session uses.
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