---
name: 'dependency-updates'

# yamllint disable-line rule:truthy
on:
  schedule:
    - cron: '0 6 * * *'
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  prepare:
    name: prepare
    runs-on: ubuntu-24.04
    outputs:
      matrix: ${{ steps.matrix.outputs.matrix }}
    steps:
      - name: Clone
        uses: actions/checkout@v7

      - name: Build dependency matrix
        id: matrix
        run: |
          matrix=$(jq -c '
            [
              (.dependencies[]      | {section: "dependencies",      name, version, url: .urls.amd64}),
              (.predependencies[]   | {section: "predependencies",   name, version, url: .urls.amd64}),
              (.recommendations[]   | {section: "recommendations",   name, version, url: .urls.amd64})
            ]
            | map(. + {repo: (.url | capture("https://github.com/(?<r>[^/]+/[^/]+)/releases").r)})
            | map(del(.url))
            | {include: .}
          ' contrib/dependencies.json)
          echo "matrix=${matrix}" >> "$GITHUB_OUTPUT"

  update:
    name: 'update / ${{ matrix.name }}'
    runs-on: ubuntu-24.04
    needs: prepare
    strategy:
      fail-fast: false
      matrix: ${{ fromJson(needs.prepare.outputs.matrix) }}
    concurrency:
      group: dependency-updates-${{ matrix.name }}
      cancel-in-progress: false
    steps:
      - name: Clone
        uses: actions/checkout@v7

      - name: Resolve latest release
        id: latest
        env:
          GH_TOKEN: ${{ secrets.HOMEBREW_GITHUB_API_TOKEN }}
          REPO: ${{ matrix.repo }}
          CURRENT: ${{ matrix.version }}
        run: |
          tag=$(gh release view --repo "$REPO" --json tagName -q .tagName)
          latest="${tag#v}"
          echo "latest=${latest}" >> "$GITHUB_OUTPUT"
          if dpkg --compare-versions "$latest" gt "$CURRENT"; then
            echo "outdated=true" >> "$GITHUB_OUTPUT"
          else
            echo "outdated=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Bump dependency entry
        if: steps.latest.outputs.outdated == 'true'
        env:
          SECTION: ${{ matrix.section }}
          NAME: ${{ matrix.name }}
          OLD: ${{ matrix.version }}
          NEW: ${{ steps.latest.outputs.latest }}
        run: |
          tmp=$(mktemp)
          jq --arg section "$SECTION" \
             --arg name "$NAME" \
             --arg old "$OLD" \
             --arg new "$NEW" '
            ($old) as $oldv |
            ($new) as $newv |
            (.[$section]) |= map(
              if .name == $name then
                .version = $newv
                | .urls.amd64 |= (gsub("v" + $oldv; "v" + $newv) | gsub($oldv; $newv))
                | .urls.arm64 |= (gsub("v" + $oldv; "v" + $newv) | gsub($oldv; $newv))
              else . end
            )
          ' contrib/dependencies.json > "$tmp"
          mv "$tmp" contrib/dependencies.json

      - name: Open pull request
        if: steps.latest.outputs.outdated == 'true'
        uses: peter-evans/create-pull-request@v8
        with:
          token: ${{ secrets.HOMEBREW_GITHUB_API_TOKEN }}
          branch: chore/bump-${{ matrix.name }}-${{ steps.latest.outputs.latest }}
          base: ${{ github.ref_name }}
          delete-branch: true
          committer: 'Dokku Bot <no-reply@dokku.com>'
          author: 'Dokku Bot <no-reply@dokku.com>'
          commit-message: 'chore: bump ${{ matrix.name }} to ${{ steps.latest.outputs.latest }}'
          title: 'chore: bump ${{ matrix.name }} to ${{ steps.latest.outputs.latest }}'
          body: |
            Bumps `${{ matrix.name }}` from `${{ matrix.version }}` to `${{ steps.latest.outputs.latest }}`.

            Release notes: https://github.com/${{ matrix.repo }}/releases/tag/v${{ steps.latest.outputs.latest }}
          labels: 'type: dependencies'