# Developing Nominatim-UI
+[![Continuous Integration](https://github.com/osm-search/nominatim-ui/actions/workflows/ci.yml/badge.svg)](https://github.com/osm-search/nominatim-ui/actions/workflows/ci.yml)
+
## Background
+Uses [Svelte](https://svelte.dev/) framework,
+[Leaflet](https://leafletjs.com/) for map interaction,
+[Bootstrap](https://getbootstrap.com/) for layout styling.
+
The user interface used to be included in the geocoder. Thus the
-first version avoid being a redesign and still uses some of the
-same configuration values. For simplicity it's not a single
-page application (SPA) written in a framework though it could
-be in the future if complexity grows.
+first version avoided being a redesign and still uses some of the
+same configuration values. Version 2 was a full refactor using
+Svelte. Version 3 added theme and easier configuration.
-Uses [jQuery](https://jquery.com/) for browser DOM interaction,
-[handlebar](http://handlebarsjs.com/) templates to build pages,
-[leaflet](https://leafletjs.com/) for map interaction,
-[bootstrap](https://getbootstrap.com/) for layout styling.
## Building the frontend
* After you change files in `src` directory run
```
- yarn build
+ yarn dev
+ ```
+ which will start a webserver on port 9080 and auto-reloads
+ whenever you edit files. Configuration in `rollup.config.js`.
+
+## Testing
+
+The `test/` setup uses [Mocha](https://mochajs.org/) to run tests. Tests use [Puppeteer](https://pptr.dev/) to control a Google Chrome headless browser and evaluate with [Assert](https://nodejs.org/api/assert.html).
+
+
+* Run integration test suite (configuration in `.mocharc.json`)
+
+ ```
+ yarn test
+ API_ON_SAME_PORT=1 yarn test
```
-* Start a webserver on port 8000 to preview changes
+ Setting API_ON_SAME_PORT simulates having both the API and UI on the same server
+ port. That's a rare setup but something https://nominatim.openstreetmap.org/ does
+ so worth testing.
+
+ To run a single test file only
```
- yarn start
+ yarn run rollup -c && yarn run mocha test/details.js
```
-* Run code style check
+* Run syntax linter (configuration in `.eslint.json`)
```
yarn lint
```
+
## Prepare a release
-1. Update version number in `package.json` file
+1. Create build (dist/bundle/ files): `yarn build`
+
+2. Update version number in `package.json` file
-2. Update `CHANGES.md` file
+3. Update `CHANGES.md` file
-3. Commit your changes: `git add... `, `git commit ...`, `git push ...` etc
+4. Commit your changes: `git add ... `, `git commit ...`, `git push ...` etc
-4. Tag release: `git tag THE_VERSION_NUMBER`, `git push --tags`
+5. Tag release: `git tag THE_VERSION_NUMBER`, `git push --tags`
-5. Upload release
\ No newline at end of file
+6. Create release on https://github.com/osm-search/nominatim-ui/releases
+ This (a triggered Github Action) will run `yarn build` and add the `dist/build/bundle.*` files.