bump.yml

# Based on nomeata's dep bumper, should go back to using that when it supports executing build-tzdata.sh after checkout
name: Create dependency bump PR
on:
  # allows manual triggering from https://github.com/../../actions/workflows/bump.yml
  workflow_dispatch:
  # runs weekly on Thursday at 8:00
  schedule:
    - cron: '0 8 * * 4'

permissions:
  contents: write
  pull-requests: write

jobs:
  bump:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: ./servant-swagger-ui-core
    steps:
      - uses: actions/checkout@v3

      - name: Cache cabal store
        id: cache
        uses: actions/cache/restore@v3
        with:
          key: bump-action-cabal-store-${{ runner.os }}-${{ github.sha }}
          path: ~/.cabal/store
          restore-keys: bump-action-cabal-store-${{ runner.os }}-

      - uses: haskell/actions/setup@v2
        with:
          ghc-version: latest

      - name: Run cabal outdated
        shell: bash
        run: |
          cabal outdated

          # also remember the values and the number of changes
          echo 'Output of `cabal outdated`:' >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY
          cabal outdated  >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY

          DELIMITER=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
          echo "CABAL_OUTDATED<<$DELIMITER" >> $GITHUB_ENV
          cabal outdated | tail -n +2 | sort | uniq >> $GITHUB_ENV
          echo "$DELIMITER" >> $GITHUB_ENV

          echo "CABAL_COUNT<<$DELIMITER" >> $GITHUB_ENV
          cabal outdated | tail -n +2 | sort | uniq | wc -l >> $GITHUB_ENV
          echo "$DELIMITER" >> $GITHUB_ENV

          echo "CABAL_FLAGS<<$DELIMITER" >> $GITHUB_ENV
          cabal outdated | tail -n +2 | sort | uniq |
            perl -ne 'print "--allow-newer=*:$1 --constraint=$1==$2 " if /([a-zA-Z0-9-]*).*\(latest: (.*)\)/' >> $GITHUB_ENV
          echo "" >> $GITHUB_ENV
          echo "$DELIMITER" >> $GITHUB_ENV

      - name: Gather PR description
        if: env.CABAL_COUNT > 0
        shell: bash
        run: |
          DELIMITER=$(dd if=/dev/urandom bs=15 count=1 status=none | base64)
          echo "GIT_PR_TITLE<<$DELIMITER" >> $GITHUB_ENV
          if [ "$CABAL_COUNT" = 1 ]
          then
            echo "Bumping $CABAL_COUNT dependency" >> $GITHUB_ENV
          else
            echo "Bumping $CABAL_COUNT dependencies" >> $GITHUB_ENV
          fi
          echo "$DELIMITER" >> $GITHUB_ENV

          echo "GIT_PR_BODY<<$DELIMITER" >> $GITHUB_ENV
          echo '```' >> $GITHUB_ENV
          echo "$CABAL_OUTDATED" >> $GITHUB_ENV
          echo '```' >> $GITHUB_ENV
          echo >> $GITHUB_ENV
          echo "(Close and reopen this PR to trigger CI checks.)" >> $GITHUB_ENV
          echo "$DELIMITER" >> $GITHUB_ENV

          echo "GIT_COMMIT_MESSAGE<<$DELIMITER" >> $GITHUB_ENV
          if [ "$CABAL_COUNT" = 1 ]
          then
            echo "Bumping $CABAL_COUNT dependency" >> $GITHUB_ENV
          else
            echo "Bumping $CABAL_COUNT dependencies" >> $GITHUB_ENV
          fi
          echo "" >> $GITHUB_ENV
          cabal outdated >> $GITHUB_ENV
          echo "$DELIMITER" >> $GITHUB_ENV

      - name: Build dependencies
        id: dependency-build
        if: env.CABAL_COUNT > 0
        shell: bash
        continue-on-error: true
        run: |
          cabal build --only-dependencies --enable-tests --write-ghc-environment-files=always ${{ env.CABAL_FLAGS }}

      - name: Save cache
        uses: actions/cache/save@v3
        if: always()
        with:
          key: ${{ steps.cache.outputs.cache-primary-key }}
          path: ~/.cabal/store

      - name: Build local package
        if: env.CABAL_COUNT > 0 && steps.dependency-build.outcome == 'success'
        shell: bash
        run: |
          cabal build --enable-tests --write-ghc-environment-files=always ${{ env.CABAL_FLAGS }}
          cabal test ${{ env.CABAL_FLAGS }}

      - name: Fetch cabal-plan-bounds
        if: env.CABAL_COUNT > 0 && steps.dependency-build.outcome == 'success'
        shell: bash
        run: |
          curl -L https://github.com/nomeata/cabal-plan-bounds/releases/latest/download/cabal-plan-bounds.linux.gz | gunzip  > /usr/local/bin/cabal-plan-bounds
          chmod +x /usr/local/bin/cabal-plan-bounds

      - name: Update .cabal file
        if: env.CABAL_COUNT > 0 && steps.dependency-build.outcome == 'success'
        shell: bash
        run: |
          # This line was added just for servant-swagger-ui, and counter-acts the default
          cd ..

          cabal-plan-bounds --extend dist-newstyle/cache/plan.json -c *.cabal
          git diff *.cabal

      - name: Create Pull Request
        id: cpr
        if: env.CABAL_COUNT > 0 && steps.dependency-build.outcome == 'success'
        uses: peter-evans/create-pull-request@v5
        with:
          branch: "cabal-updates"
          title: ${{ env.GIT_PR_TITLE }}
          body: ${{ env.GIT_PR_BODY }}
          commit-message: ${{ env.GIT_COMMIT_MESSAGE }}
          delete-branch: true
          add-paths: |
            servant-swagger-ui-core/*.cabal

      - name: Link to Pull Requst from summary
        if: env.CABAL_COUNT > 0 && steps.cpr.outputs.pull-request-number
        shell: bash
        run: |
          # This line was added just for servant-swagger-ui, and counter-acts the default
          cd ..

          echo "See [pull request ${{ steps.cpr.outputs.pull-request-number }}](${{ steps.cpr.outputs.pull-request-url }})" >> $GITHUB_STEP_SUMMARY