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refactor: nearest-first earthquake list, drop the map and its libraries #3

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ad1ef58
Add Seismic Monitor edge app
Sir-Monke Aug 9, 2026
1dc3813
Rename variables for readability
Sir-Monke Aug 10, 2026
51d6945
Refactor: followed the naming guidelines, removed unused code and spl…
Sir-Monke Aug 10, 2026
b4716ae
refactor: simplify the app into a single readable file
Sir-Monke Aug 12, 2026
9684567
refactor: nearest-first earthquake list, drop the map and its libraries
Sir-Monke Aug 13, 2026
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4 changes: 4 additions & 0 deletions .ignore
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.git/
.github/
screenshots/
README.md
10 changes: 0 additions & 10 deletions .pre-commit-config.yaml
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27 changes: 11 additions & 16 deletions README.md
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# GitHub Blueprint
# Nearest Earthquake — Screenly Edge App

Blueprint for GitHub repos.
Shows the single nearest earthquake to this screen and how far away it is.

## Usage
Two files: `screenly.yml` and `index.html`. No stylesheet, no libraries, no
settings. Distances in kilometres. Data from the public USGS feed (all magnitudes,
past 24 hours), refreshed every 5 minutes.

```bash
$ rsync -aP .github /path/to/repo/
```

## Repo Configuration
Needs a player: it reads the screen's coordinates and the CORS proxy from the
injected `screenly.js` bridge, so it will not run in a plain browser.

* Default branch should be `master`
* If relevant, `production` is used as the production branc h
* Branch protection should be enabled on master and production with:
* `Require a pull request before merging`, `Require approvals` and `Require review from Code Owners`
* `Require status checks to pass before merging`
## Deploy

## Code Owner

Adjust `.github/CODEOWNERS` to the squad that owns the repo.
```bash
screenly edge-app deploy
```
32 changes: 32 additions & 0 deletions index.html
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<!DOCTYPE html>
<h1 id=out></h1>
<script src="screenly.js?version=1"></script>
<script>
var here = screenly.metadata.coordinates;
var url = screenly.cors_proxy_url + "/https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_day.geojson";

function kmAway(quake) {
var rad = Math.PI / 180;
var lat1 = here[0] * rad;
var lat2 = quake.geometry.coordinates[1] * rad;
var dLat = lat2 - lat1;
var dLng = (quake.geometry.coordinates[0] - here[1]) * rad;
var h = Math.sin(dLat / 2) * Math.sin(dLat / 2) +
Math.cos(lat1) * Math.cos(lat2) * Math.sin(dLng / 2) * Math.sin(dLng / 2);
return 12742 * Math.asin(Math.sqrt(h));
}

function show() {
fetch(url).then(response => response.json()).then(feed => {
var nearest = feed.features[0];
feed.features.forEach(quake => {
if (kmAway(quake) < kmAway(nearest)) nearest = quake;
});
out.textContent = "M" + nearest.properties.mag + " " + nearest.properties.place +
" - " + Math.round(kmAway(nearest)) + " km away";
});
setTimeout(show, 300000);
}

show();
</script>
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57 changes: 0 additions & 57 deletions ruff.toml
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11 changes: 11 additions & 0 deletions screenly.yml
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---
syntax: manifest_v1
id: 01KZ77RN8V1GWCGTYG53HP1V0T
description: Shows the nearest earthquake to this screen and how far away it is.
author: Will Cornforth
homepage_url: https://earthquake.usgs.gov
categories:
- Dashboards
entrypoint:
type: file
ready_signal: false
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