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.github/workflows/main.yml

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+on: [push]
+
+jobs:
+  extract_job:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          path: main
+      - name: Checkout data repo
+        uses: actions/checkout@v2
+        with:
+          repository: CSSEGISandData/COVID-19
+          path: data
+      - name: Hello world action step
+        uses: ./ # Uses an action in the root directory
+        id: hello
+      - name: Commit files
+        run: |
+          git config --local user.email "[email protected]"
+          git config --local user.name "GitHub Action"
+          git add .
+          git commit -m "Update json" -a
+      - name: Push changes
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}

action.js

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+const fs = require("fs");
+const path = require("path");
+const parse = require("csv-parse/lib/sync");
+
+const WORKSPACE = process.env.GITHUB_WORKSPACE;
+const DATA_REPO = "data"; // from main.yml checkout action path
+const MAIN_REPO = "main"; // from main.yml checkout action path
+const FILENAME_CONFIRMED = "time_series_19-covid-Confirmed.csv";
+const FILENAME_DEATHS = "time_series_19-covid-Deaths.csv";
+const FILENAME_RECOVERED = "time_series_19-covid-Recovered.csv";
+
+const dataPath = path.join(
+  WORKSPACE,
+  DATA_REPO,
+  "csse_covid_19_data",
+  "csse_covid_19_time_series"
+);
+const outputPath = path.join(WORKSPACE, MAIN_REPO, "docs", "timeseries.json");
+
+function extract(filename) {
+  const csv = fs.readFileSync(path.resolve(dataPath, filename));
+  const [headers, ...rows] = parse(csv);
+  const [province, country, lat, long, ...dates] = headers;
+  const countList = {};
+
+  rows.forEach(([province, country, lat, long, ...counts]) => {
+    countList[country] = countList[country] || {};
+    dates.forEach((date, i) => {
+      countList[country][date] = countList[country][date] || 0;
+      countList[country][date] += +counts[i];
+    });
+  });
+  return [countList, dates];
+}
+
+const [confirmed, dates] = extract(FILENAME_CONFIRMED);
+const [deaths] = extract(FILENAME_DEATHS);
+const [recovered] = extract(FILENAME_RECOVERED);
+const countries = Object.keys(confirmed);
+const results = {};
+countries.forEach(country => {
+  results[country] = dates.map(date => {
+    const [month, day] = date.split("/");
+    return {
+      date: `2020-${month}-${day}`,
+      confirmed: confirmed[country][date],
+      deaths: deaths[country][date],
+      recovered: recovered[country][date]
+    };
+  });
+});
+
+fs.writeFileSync(outputPath, JSON.stringify(results, null, 2));

action.yml

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+name: "Extract Time Series"
+runs:
+  using: "node12"
+  main: "action.js"