chore: attempt to download old artifact

.github/actions/analyze/action.yml

@@ -58,6 +58,42 @@ inputs:
 runs:
   using: composite
   steps:
+
+  - name: Get latest commit hash from main
+    id: latest_commit
+    run: |
+      git fetch origin main
+      LATEST_COMMIT=$(git rev-parse origin/main)
+      echo "LATEST_COMMIT=$LATEST_COMMIT" >> $GITHUB_ENV
+
+  - name: Check if previous artifact exists
+    id: artifact_check
+    run: |
+      ARTIFACT_EXISTS=$(curl -s -H "Authorization: Bearer ${{ github.token }}" "https://api.github.com/repos/${{ github.repository }}/actions/artifacts?name=reports-${{ env.LATEST_COMMIT }}" | jq '.total_count' | awk '{print $1}')
+      if [[ $ARTIFACT_EXISTS -gt 0 ]]; then
+        echo "ARTIFACT_EXISTS=true" >> $GITHUB_ENV
+      else
+        echo "ARTIFACT_EXISTS=false" >> $GITHUB_ENV
+      fi
+
+  - name: Get artifact URL
+    id: get_artifact_url
+    run: |
+      ARTIFACT_URL=$(curl -s -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+        "https://api.github.com/repos/${{ github.repository }}/actions/artifacts?name=reports-${{ env.LATEST_COMMIT }}" | \
+        jq -r '.artifacts[0].archive_download_url')
+      echo "ARTIFACT_URL=$ARTIFACT_URL" >> $GITHUB_ENV
+
+  - name: Download artifact
+    if: env.ARTIFACT_URL != 'null'
+    run: |
+      curl -L -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+        "${{ env.ARTIFACT_URL }}" \
+        -o artifact.zip
+      unzip artifact.zip -d old
+      cd old
+      unzip reports.zip
+
   - name: Analyze all packages
     env:
       NODE_ENV: ${{ inputs.NODE_ENV }}

.github/actions/analyze/compareReports.js

@@ -0,0 +1,122 @@
+const fs = require('fs');
+const path = require('path');
+
+function roundUpToDecimals(num, decimals) {
+    const factor = Math.pow(10, decimals);
+    return Math.ceil(num * factor) / factor;
+}
+
+function readJsonFile(filePath) {
+    if (fs.existsSync(filePath)) {
+        const data = fs.readFileSync(filePath, 'utf-8');
+        return JSON.parse(data);
+    }
+    return null;
+}
+
+function calculateDiff(oldSize, newSize) {
+    return newSize - oldSize;
+}
+
+function calculatePercentage(oldSize, newSize) {
+    if (oldSize === 0) {
+        return newSize === 0 ? 0 : 100;
+    }
+    return ((newSize - oldSize) / oldSize) * 100;
+}
+
+function formatSize(size, roundUp) {
+    if (size === null) {
+        return '-';
+    }
+
+    const formattedSize = roundUp ? roundUpToDecimals(size / 1024, 2) + 'kb' : (size / 1024).toFixed(2) + 'kb';
+    return formattedSize;
+}
+
+const packagesDir = './packages';
+const oldPackagesDir = './old/packages';
+const packages = [...new Set([...fs.readdirSync(packagesDir), ...fs.readdirSync(oldPackagesDir)])];
+
+let tableRows = '';
+
+for (const pkg of packages) {
+    const oldReport = readJsonFile(path.join(oldPackagesDir, pkg, 'report.json'));
+    const newReport = readJsonFile(path.join(packagesDir, pkg, 'report.json'));
+
+    const oldSize = oldReport ? oldReport[0].gzipSize : null;
+    const newSize = newReport ? newReport[0].gzipSize : null;
+    let diff = oldSize && newSize ? calculateDiff(oldSize, newSize) : null;
+
+    if (oldSize === null) {
+        diff = newSize;
+    }
+
+    if (newSize === null) {
+        diff = oldSize;
+    }
+
+    let diffText = '-';
+
+    if (diff !== 0) {
+        diffText = diff < 0 ? '-' : '+' + formatSize(diff, true);
+    } else {
+        diffText = '+0kb';
+    }
+
+    let percentage = oldSize && newSize ? calculatePercentage(oldSize, newSize) : null;
+
+    if (oldSize === null) {
+        percentage = 100;
+    }
+
+    if (newSize === null) {
+        percentage = -100;
+    }
+
+    let percentageText = '-';
+    let percentageEmoji;
+
+    if (percentage === 0) {
+        percentageEmoji = '';
+    } else if (percentage < 0) {
+        percentageEmoji = '🟢'; // green for decrease
+    } else if (percentage >= 0 && percentage <= 5) {
+        percentageEmoji = '🟡'; // yellow for small increase
+    } else {
+        percentageEmoji = '🔴'; // red for larger increase
+    }
+
+    if (percentage !== 0) {
+        percentageText = percentage.toFixed(2) + '%';
+    } else {
+        percentageText = '0%';
+    }
+
+    tableRows += `
+    <tr>
+      <td>${pkg}</td>
+      <td>${formatSize(oldSize)}</td>
+      <td>${formatSize(newSize)}</td>
+      <td>${diffText}</td>
+      <td>${percentageText} ${percentageEmoji}</td>
+    </tr>
+  `.trim();
+}
+
+console.log(
+    `
+<table>
+  <thead>
+    <th>package</th>
+    <th>old</th>
+    <th>new</th>
+    <th>diff</th>
+    <th>percentage</th>
+  </thead>
+  <tbody>
+    ${tableRows}
+  </tbody>
+</table>
+`.trim()
+);