nightly.yml

name: Nightly branch

on:  
  workflow_dispatch:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
      - edited
  push:
    branches:
      - main
  schedule:
    - cron: "0 5 * * *" # 0500 UTC every day

jobs:
  # Create snapshot of latest main or release branch for nightly build
  nightly-snapshot:
    name: Update nightly branch
    runs-on: ubuntu-latest

    steps:
    - name: Checkout repository
      uses: actions/checkout@v4
      with:
        fetch-depth: 0
        token: ${{ secrets.RELEASE_PLZ_TOKEN }}

    - name: Choose base commit for nightly snapshot
      id: choose-base
      env:
        GH_EVENT_NAME: ${{ github.event_name }}
      run: |
        echo "Event triggered by $GH_EVENT_NAME"
        echo

        echo "Listing branches on remote"
        echo

        git --no-pager branch --remote | sed 's|origin/||'

        echo

        git checkout -b nightly --track origin/nightly
        OLD_BASE_COMMIT=$(git log nightly --skip=1 -n 1 --format=%H)

        echo "Nightly commit ID is $OLD_BASE_COMMIT"

        LATEST_RELEASE_PLZ=$(git --no-pager branch --format="%(refname:short)" --remote |
          sed 's|origin/||' |
          grep -E '^release-plz-20' |
          sort -r |
          head -n 1)

        if [ -z "$LATEST_RELEASE_PLZ" ]; then

          echo "No release-plz branch; using main"
          git checkout -b main --track main
          BASE_BRANCH=main;

        else

          echo "Found RP branch $LATEST_RELEASE_PLZ; comparing against main"

          git checkout -b "$LATEST_RELEASE_PLZ" --track "origin/$LATEST_RELEASE_PLZ"

          if git show-ref --verify --quiet refs/heads/main; then
            echo "Branch 'main' already exists locally";
          else
            git checkout -b main --track origin/main;
          fi

          export RP_TS=$(git log -1 --format=%cd --date=iso-strict $LATEST_RELEASE_PLZ)
          export MAIN_TS=$(git log -1 --format=%cd --date=iso-strict main)

          echo "Branch $LATEST_RELEASE_PLZ updated at $RP_TS"
          echo "Branch main updated at $MAIN_TS"

          if [[ "$RP_TS" > "$MAIN_TS" ]]; then
            git checkout $LATEST_RELEASE_PLZ
            BASE_BRANCH=$LATEST_RELEASE_PLZ;
          else
            git checkout main
            BASE_BRANCH=main;
          fi

        fi

        NEW_BASE_COMMIT=$(git log $BASE_BRANCH -n 1 --format=%H)

        echo "Choosing base branch $BASE_BRANCH because it's newer"
        echo "$BASE_BRANCH commit ID is $NEW_BASE_COMMIT"

        if [[ "$OLD_BASE_COMMIT" == "$NEW_BASE_COMMIT" && "$GH_EVENT_NAME" == "pull_request" ]]; then
          echo "Nightly already points to same base; leave unchanged";
          echo "base-commit=skip" >> "$GITHUB_OUTPUT"
          exit 0
        elif [[ "$GH_EVENT_NAME" == "push" ]]; then
          LATEST_TAG=$(git describe --tags --abbrev=0)

          echo Looking for non-chore commits since last tag
          echo
          git --no-pager log --pretty=format:"%s" $LATEST_TAG..HEAD | grep -v "^chore"
          if [ $? -eq 0 ]; then
            echo
            echo "Found non-chore commits; expecting release-plz to create a new release branch."
            echo "base-commit=skip" >> "$GITHUB_OUTPUT"
            exit 0
          else
            echo "Push to main, but there are only chore commits since last tag."
            echo "Not expecting a new release branch"
            echo;
          fi
        fi

        echo "Updating nightly base";
        echo "base-commit=$NEW_BASE_COMMIT" >> "$GITHUB_OUTPUT"

    - name: Install Rust toolchain
      if: ${{ steps.choose-base.outputs.base-commit != 'skip' }}
      uses: dtolnay/rust-toolchain@stable
      with:
        components: cargo

    - name: Add -nightly+(date)-(commit ID) prefix to crate versions
      id: set-nightly-version
      if: ${{ steps.choose-base.outputs.base-commit != 'skip' }}
      run: |
        echo Force updating nightly branch to point to base branch
        git branch -f nightly

        export NIGHTLY_SUFFIX=$(echo -nightly+`date +%F`-`git rev-parse --short HEAD`)
        echo Will add nightly suffix $NIGHTLY_SUFFIX

        sed -i "s/^version = \"\\(.*\\)\"/version = \"\\1$NIGHTLY_SUFFIX\"/" sdk/Cargo.toml

        cargo update -w
        git add -f Cargo.lock

        echo
        echo Proposed changes:
        git status
        git diff
    
    - name: Commit Cargo.toml and Cargo.lock
      uses: stefanzweifel/git-auto-commit-action@v5
      id: commit
      if: ${{ steps.choose-base.outputs.base-commit != 'skip' }}
      with:
        branch: nightly
        push_options: '--force'
        commit_message: Prepare nightly release
        commit_user_name: Adobe CAI Team
        commit_user_email: noreply@adobe.com
        create_branch: true