# SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
# SPDX-License-Identifier: MIT
name: Update 3rdparty command

on:
  issue_comment:
    types: created

permissions:
  contents: read

jobs:
  rebase:
    runs-on: ubuntu-latest
    permissions:
      contents: none
      pull-requests: read

    # On pull requests and if the comment starts with `/update-3rdparty`
    if: github.event.issue.pull_request != '' && startsWith(github.event.comment.body, '/update-3rdparty')

    steps:
      - name: Add reaction on start
        uses: peter-evans/create-or-update-comment@e8674b075228eee787fea43ef493e45ece1004c9 # v3.0.1
        with:
          token: ${{ secrets.COMMAND_BOT_PAT }}
          repository: ${{ github.event.repository.full_name }}
          comment-id: ${{ github.event.comment.id }}
          reactions: '+1'

      # issue_comment events carry no pull_request context in their payload, so we
      # must fetch the PR via the API. This also gives us base.ref for free, avoiding
      # a second API call. The GITHUB_TOKEN needs pull-requests:read (granted above).
      - name: Get pull request metadata
        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
        id: get-pr
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const pull = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number,
            });
            core.setOutput('head_repo', pull.data.head.repo?.full_name ?? '');
            core.setOutput('base_ref',  pull.data.base.ref);

      - name: Disabled on forks
        if: steps.get-pr.outputs.head_repo != github.repository
        run: |
          echo 'Can not execute /update-3rdparty on forks'
          exit 1

      - name: Init branch
        uses: xt0rted/pull-request-comment-branch@e8b8daa837e8ea7331c0003c9c316a64c6d8b0b1 # v1
        id: comment-branch

      - name: Checkout ${{ steps.comment-branch.outputs.head_ref }}
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false
          fetch-depth: 0
          token: ${{ secrets.COMMAND_BOT_PAT }}
          ref: ${{ steps.comment-branch.outputs.head_ref }}

      - name: Register server reference to fallback to master branch
        run: |
          base_ref="${{ steps.get-pr.outputs.base_ref }}"
          if [[ "$base_ref" == "main" || "$base_ref" == "master" ]]; then
            echo "server_ref=master" >> "$GITHUB_ENV"
            echo "Setting server_ref to master"
          elif [[ "$base_ref" =~ ^stable[0-9]+$ ]]; then
            echo "server_ref=$base_ref" >> "$GITHUB_ENV"
            echo "Setting server_ref to $base_ref"
          else
            echo "Not based on master/main/stable*, so skipping pull 3rdparty command"
          fi

      - name: Setup git
        run: |
          git config --local user.email 'nextcloud-command@users.noreply.github.com'
          git config --local user.name 'nextcloud-command'

      - name: Add reaction on failure
        uses: peter-evans/create-or-update-comment@e8674b075228eee787fea43ef493e45ece1004c9 # v3.0.1
        if: ${{ env.server_ref == '' }}
        with:
          token: ${{ secrets.COMMAND_BOT_PAT }}
          repository: ${{ github.event.repository.full_name }}
          comment-id: ${{ github.event.comment.id }}
          reactions: '-1'

      - name: Pull 3rdparty
        if: ${{ env.server_ref != '' }}
        run: git submodule foreach 'if [ "$sm_path" == "3rdparty" ]; then git pull origin '"'"'${{ env.server_ref }}'"'"'; fi'

      - name: Commit and push changes
        if: ${{ env.server_ref != '' }}
        run: |
          git add 3rdparty
          git commit -s -m 'Update submodule 3rdparty to latest ${{ env.server_ref }}'
          git push

      - name: Add reaction on failure
        uses: peter-evans/create-or-update-comment@e8674b075228eee787fea43ef493e45ece1004c9 # v3.0.1
        if: failure()
        with:
          token: ${{ secrets.COMMAND_BOT_PAT }}
          repository: ${{ github.event.repository.full_name }}
          comment-id: ${{ github.event.comment.id }}
          reactions: '-1'