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name: Daily Release
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on:
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  schedule:
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    # Run at 00:30 UTC every day
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    - cron: '30 0 * * *'
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  # Allow manual triggering for testing
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  workflow_dispatch:
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jobs:
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  update-compatibility-date:
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    runs-on: ubuntu-latest
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    permissions:
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      contents: write
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    steps:
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      - name: Checkout code
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        uses: actions/checkout@v6
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        with:
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          token: ${{ secrets.DEVPROD_PAT }}
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          ref: main
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      - name: Get current date
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        id: date
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        run: |
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          echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
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          echo "max_date=$(date -d '+7 days' +'%Y-%m-%d')" >> $GITHUB_OUTPUT
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      - name: Update compatibility dates
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        run: |
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          echo "${{ steps.date.outputs.date }}" > src/workerd/io/release-version.txt
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          echo "${{ steps.date.outputs.max_date }}" > src/workerd/io/maximum-compatibility-date.txt
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      - name: Check for changes
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        id: git-check
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        run: |
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          if [[ $(git status --porcelain src/workerd/io/release-version.txt src/workerd/io/maximum-compatibility-date.txt) ]]; then
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            echo "changed=true" >> $GITHUB_OUTPUT
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          else
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            echo "changed=false" >> $GITHUB_OUTPUT
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          fi
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          if [[ $(git show --format="%ae" -s) == "workers-devprod@cloudflare.com" ]] && \
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             [[ $(git diff-tree --no-commit-id --name-only -r HEAD -- src/workerd/io/release-version.txt) ]]; then
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            echo "last_commit_is_daily_release=true" >> $GITHUB_OUTPUT
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          else
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            echo "last_commit_is_daily_release=false" >> $GITHUB_OUTPUT
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          fi
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      # Publish new version if compatibility-date changed and the last commit wasn't already
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      # an automated daily release.
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      - name: Commit and push change
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        if: steps.git-check.outputs.changed == 'true' && steps.git-check.outputs.last_commit_is_daily_release != 'true'
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        run: |
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          git config user.email "workers-devprod@cloudflare.com"
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          git config user.name "Workers DevProd"
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          git add src/workerd/io/release-version.txt src/workerd/io/maximum-compatibility-date.txt
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          git commit -m "Release ${{ steps.date.outputs.date }}"
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          git push
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