wrolpi/app
lrnselfreliance ebdf9dcc4b
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Map previews that never drew, and a Docker map with no world under it (#658)
* ui: a preview map that waited for a container it could never see

Both map preview modals -- the per-region eye button and "View All Regions"
-- opened to an empty box.  Each renders a div into a Modal and hands it to
MapLibre from an effect gated on `open`, reading the node out of a `useRef`:

    if (!open || !mapContainer.current) return;

Mantine's Modal mounts its body one commit after `opened` flips true, so on
the render that opens the modal the ref is still null.  The effect returns,
nothing it depends on changes again, and it never runs a second time.  No
console error, no rejected promise, no canvas -- just an empty div.

Semantic UI's Portal mounted the body in the same commit that opened it, so
the ref was attached by the time effects ran.  The effect bodies are
byte-identical across that migration; the modal library is the only variable,
confirmed against a device still running the older build where both previews
render.

A callback ref instead, so the effect re-runs when the node arrives and this
stops depending on any modal's mounting schedule.  The async source lookup
also gets a cancelled flag: it could resolve after the cleanup ran, building
a map nothing would ever remove and leaking a WebGL context per open.

The tests drive the real page and assert a map was built against a node that
is in the document -- the outcome, rather than the mechanism that quietly
changed underneath it.  Seven of the eight fail on the code before this.

* build: docker had no world underneath its map regions

Caddy serves /blobs/map-overview.pmtiles out of /opt/wrolpi-blobs, and that
blob is the world at zoom 0-6 -- what a regional extract sits on top of.
Without it a user who subscribes to a few regions gets those regions floating
on an empty background everywhere their data does not reach.  Only a full
planet file, at 134GB, makes it unnecessary.

Raspberry Pi and Debian installs get the blob from pi-gen, the live-build
config, and upgrade.sh.  Docker got nothing: the compose file bind-mounted a
git-ignored host directory over /opt/wrolpi-blobs, and a bind mount replaces
the image's directory rather than merging with it, so the path existed and was
empty on every Docker WROLPi.  Verified against a running deployment, where
that URL returned 404 while the same URL on hardware returned 206.

So the web image fetches the blob at build time, as the other three builders
do, and the mount that would hide it is gone.  `curl -f` so an HTTP error
fails the layer -- an image that builds without the blob is this same bug,
except silent at build time too.

The tests read the deployment files rather than a built container: building
to check costs a CDN download and several minutes, and both things that broke
-- nothing fetches it, a mount hides it -- are visible in the source.

* ui: cancel the load handler too, and make the cancel test falsifiable

Review follow-ups on the preview modals.

The `cancelled` flag was checked before constructing the map but not inside
the `load` handler it installs, so cleanup landing between the two left that
body drawing into a map `remove()` had already torn down.  Guarded, mirroring
the `destroyed` pattern in MapViewer.js.  The source promise also gets a
`.catch`: the helper cannot reject today, but nothing says it never will, and
an unhandled rejection here would be as quiet as the bug this all started as.

Two test corrections, both cases of an assertion claiming more than it read:

The region-drawing test spied on `addSource` AFTER construction and then
re-fired `load` by hand, so its count came entirely from that manual call and
said nothing about the production path.  FakeMap now records the sources it is
given, and the assertion reads what the component's own `load` drew -- each
region once, in order, and none for the entry with no bbox.

The new cancel test passed with the guard deleted, which is worse than not
having it: Mantine had not mounted the modal body when it closed, so the
effect had never run and there was nothing to cancel.  It now waits for the
effect to reach the source lookup before closing, and ships beside a control
that releases the same held promise WITHOUT closing and requires a map.  The
control is what makes the zero meaningful; verified that removing the guard
fails the cancel test while the control still passes.
2026-08-11 20:37:23 -06:00
..
cypress test: the component suite's twelve failures, none of them about the component 2026-08-08 18:05:54 -06:00
public ui: media filtering is a per-theme setting, not a night-mode hardcode 2026-08-08 18:04:00 -06:00
scripts ui: the last of Semantic UI, in name and in dead CSS 2026-08-08 18:05:54 -06:00
src Map previews that never drew, and a Docker map with no world under it (#658) 2026-08-11 20:37:23 -06:00
.gitignore A new start 2021-11-01 16:43:09 -06:00
cypress.config.js Skipping Caddy tests on CICD. 2026-03-10 20:30:46 -06:00
package-lock.json build: put the @babel pins back, and make them fail loudly if dropped again (#653) 2026-08-08 18:54:34 -06:00
package.json build: put the @babel pins back, and make them fail loudly if dropped again (#653) 2026-08-08 18:54:34 -06:00
README.md Fixing bug where file search would issue twice on load. 2023-04-09 14:34:33 -06:00
serve.json Adding serve.json so epub.html is not rewritten by serve. Buildling app during pi-gen/debian image builds. 2025-03-13 19:34:28 -06:00
tsconfig.json Converting Theme.js to typescript so we can use shorthands like Card.Icon. 2025-12-07 12:41:10 -07:00

Getting Started with Create React App

This project was bootstrapped with Create React App.

Available Scripts

In the project directory, you can run:

npm start

Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.

The page will reload when you make changes.
You may also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

See the section about deployment for more information.

npm run eject

Note: this is a one-way operation. Once you eject, you can't go back!

If you aren't satisfied with the build tool and configuration choices, you can eject at any time. This command will remove the single build dependency from your project.

Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except eject will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.

You don't have to ever use eject. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.

Learn More

You can learn more in the Create React App documentation.

To learn React, check out the React documentation.

Code Splitting

This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting

Analyzing the Bundle Size

This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size

Making a Progressive Web App

This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app

Advanced Configuration

This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration

Deployment

This section has moved here: https://facebook.github.io/create-react-app/docs/deployment

npm run build fails to minify

This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify