check-learning-path-links.yml

name: 'Check Learning Path Links'
on:
  schedule: # Run once a month
    - cron: '0 0 1 * *'
  workflow_dispatch:

permissions: {}
  
jobs:
  check-learning-path-links:
    if: github.repository == 'dotnet/dotnet-monitor'
    name: 'Check Learning Path Links'
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Checkout head
        uses: actions/checkout@v4
        with:
          persist-credentials: true # need this for opening a PR
          fetch-depth: 0
          ref: main

      - name: Get previous update SHA
        id: get_sha
        run: |
          prev_sha=$(cat .github/learning-path-sha.txt)
          echo "prev_sha=$prev_sha" >> $GITHUB_ENV

      - name: Checkout previous update
        uses: actions/checkout@v4
        with:
          persist-credentials: false
          ref:  ${{ env.prev_sha }}
          path: prev

      - name: Get changed files
        run: |
          changed_source_files=$(git diff-tree --no-commit-id --name-only -r "$prev_sha" "$GITHUB_SHA" | { grep "**.cs$" || test $? = 1; })
          echo "Files to validate: '${changed_source_files}'"
          echo "updated_files=$(echo ${changed_source_files})" >> $GITHUB_ENV

      - name: Check Learning Path Links
        id: check-links
        uses: ./.github/actions/learning-path-staleness-check
        with:
          repoURLToSearch: 'https://github.com/dotnet/dotnet-monitor'
          learningPathsDirectory: 'documentation/learningPath'
          changedFilePaths: ${{ env.updated_files }}
          sourceDirectoryName: 'src'
          oldHash: ${{ env.prev_sha }}
          newHash: ${{ github.sha }}
          learningPathHashFile: '.github/learning-path-sha.txt'

      - name: Open PR
        uses: ./.github/actions/open-pr
        with:
          files_to_commit: --all -- :!prev
          title: "[REQUIRES MANUAL REVIEW] Update Learning Paths"
          commit_message: Update Learning Paths
          body: This PR was auto generated and will not be automatically merged in - adjustments should be made manually as-needed.<br />${{ steps.check-links.outputs.outputText }}
          branch_name: learningPathUpdates/${{ github.sha }}
          fail_if_files_unchanged: true
          auth_token: ${{ secrets.GITHUB_TOKEN }}