conda.yml

name: Create conda subchannel

on:
  push:
    branches:
      - main
  pull_request:
  workflow_dispatch:
  schedule:
    - cron: "20 * * * *" # Every 1h

concurrency:
  # Concurrency group that uses the workflow name and PR number if available
  # or commit SHA as a fallback. If a new build is triggered under that
  # concurrency group while a previous build is running it will be canceled.
  # Repeated pushes to a PR will cancel all previous builds, while multiple
  # merges to main will not cancel.
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
  cancel-in-progress: true

jobs:
  prepare:
    runs-on: ubuntu-latest
    outputs:
      versions: ${{ steps.args.outputs.versions }}
    steps:
      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
      - name: Get arguments
        id: args
        run: echo "versions=$(ls versions | jq -Rsc 'split("\n")[:-1]')" >> $GITHUB_OUTPUT

  build:
    needs: [prepare]
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        napari-version: ${{ fromJson(needs.prepare.outputs.versions) }}
    outputs:
      subchannel-prefix: napari-
      subdirs: ${{ steps.args.outputs.subdirs-json }}
      versions: ${{ needs.prepare.outputs.versions }}
      lastmodtime: ${{ steps.current-time.outputs.formattedTime }}
    steps:
      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
      - name: Get arguments
        id: args
        run: |
          echo "keep-trees=$(jq -r '."keep-trees" | join(" ")' versions/${{ matrix.napari-version }}/conda.json)" >> $GITHUB_OUTPUT
          echo "subdirs-json=$(jq -c '.subdirs' versions/${{ matrix.napari-version }}/conda.json)" >> $GITHUB_OUTPUT
          echo "subdirs=$(jq -r '.subdirs | join(" ")' versions/${{ matrix.napari-version }}/conda.json)" >> $GITHUB_OUTPUT
          echo "subchannel-name=napari-${{ matrix.napari-version }}" >> $GITHUB_OUTPUT
      - uses: conda-incubator/conda-subchannel@main
        id: subchannel
        with:
          subchannel-name: ${{ steps.args.outputs.subchannel-name }}
          channel: conda-forge
          subdirs: ${{ steps.args.outputs.subdirs }}
          keep-trees: ${{ steps.args.outputs.keep-trees }}
          gh-pages-branch: "" # Disable so we do it manually below
          served-at: "https://github.com/napari/pins/releases/download/${{ steps.args.outputs.subchannel-name }}"
      - name: Get current time
        uses: josStorer/get-current-time@060cae3fbd32c181c6841788189a601ac8df8389 # v2.1.2
        id: current-time
        with:
          format: "YYYY-MM-DD HH:MM:SS"
          utcOffset: "+00:00"
      - uses: actions/upload-artifact@v4
        with:
          name: ${{ steps.args.outputs.subchannel-name }}
          path: ${{ steps.subchannel.outputs.output-directory }}

  publish-website:
    runs-on: ubuntu-latest
    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/main'
    needs: [build]
    permissions:
      contents: write # to deploy to GH Pages
    steps:
      - name: Retrieve release distributions
        uses: actions/download-artifact@65a9edc5881444af0b9093a5e628f2fe47ea3b2e # v4.1.7
        with:
          pattern: "${{ needs.build.outputs.subchannel-prefix }}*"
      - name: List website files
        run: ls -alh
      - uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4.0.0
        with:
          github_token: ${{ github.token }}
          publish_branch: gh-pages
          publish_dir: ./
          destination_dir: conda/${{ needs.build.outputs.subchannel-prefix }}${{ matrix.version }}
          user_name: "github-actions[bot]"
          user_email: "github-actions[bot]@users.noreply.github.com"
          enable_jekyll: false
          exclude_assets: ".github,**.json,**.bz2,**.zst"
          keep_files: false
          force_orphan: true

  publish-repodata:
    runs-on: ubuntu-latest
    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || github.ref == 'refs/heads/main'
    needs: [build]
    permissions:
      contents: write # to deploy to GH Releases
    strategy:
      matrix:
        subdir: ${{ fromJson(needs.build.outputs.subdirs) }}
        version: ${{ fromJson(needs.build.outputs.versions) }}
    steps:
      - name: Retrieve release distributions
        uses: actions/download-artifact@65a9edc5881444af0b9093a5e628f2fe47ea3b2e # v4.1.7
        with:
          name: "${{ needs.build.outputs.subchannel-prefix }}${{ matrix.version }}"
      - name: List repodata files
        run: ls -alh ${{ matrix.subdir }}/repodata.*
      - name: Upload conda repodata for ${{ matrix.subdir }}
        uses: softprops/action-gh-release@69320dbe05506a9a39fc8ae11030b214ec2d1f87 # v2.0.5
        with:
          draft: false
          name: ${{ needs.build.outputs.subchannel-prefix }}${{ matrix.version }}/${{ matrix.subdir }}
          tag_name: ${{ needs.build.outputs.subchannel-prefix }}${{ matrix.version }}/${{ matrix.subdir }}
          files: |
            ${{ matrix.subdir }}/*.json
            ${{ matrix.subdir }}/*.json.bz2
            ${{ matrix.subdir }}/*.json.zst
          fail_on_unmatched_files: true
          body: |
            Repodata for `${{ needs.build.outputs.subchannel-prefix }}${{ matrix.version }}/${{ matrix.subdir }}` subchannel.
            Last updated on ${{ needs.build.outputs.lastmodtime }} UTC. 
            See the README for more information.

  keepalive-job:
    name: Keep workflow alive
    runs-on: ubuntu-latest
    if: github.event_name != 'pull_request'
    permissions:
      actions: write
    steps:
      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6
      - uses: gautamkrishnar/keepalive-workflow@05456e7809058d586d96392e99217726ccc10076 # v2.0.5