formula.yml

# TODO:
#   - test the formula (this might take a while to run w/o bottles)
#     - test that it installs correctly
#     - test that it works properly

name: Build formula for dbt package

on:
  workflow_dispatch:
    inputs:
      version:
        type: string
        description: "The package version to release"
        required: true
      dbt-package:
        type: string
        description: "Name of the dbt database adapter"
        required: true
      is-default-version:
        description: "Is this version the latest stable release?"
        type: boolean
        required: true
  workflow_call:
    inputs:
      version:
        type: string
        description: "The package version to release"
        required: true
      dbt-package:
        type: string
        description: "Name of the dbt database adapter"
        required: true
      is-default-version:
        description: "Is this version the latest stable release?"
        type: boolean
        required: true

env:
  BUILD_DIR: ${{ github.workspace }}/build

jobs:
  create-formula:
    runs-on: ubuntu-latest
    steps:
      - name: Log workflow inputs
        run: |
          echo "::group::Build formula inputs"
          echo "version=${{ github.event.inputs.version }}"
          echo "dbt-package=${{ github.event.inputs.dbt-package }}"
          echo "is-default-version=${{ github.event.inputs.is-default-version }}"
          echo "::endgroup::"

      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Setup homebrew
        if: ${{ !env.ACT }}
        uses: Homebrew/actions/setup-homebrew@master

      - name: Setup python
        uses: actions/setup-python@v4
        with:
          python-version: "3.10"

      - name: Create build dir
        run: mkdir -p $BUILD_DIR

      - name: Install dependencies
        run: |
          pip install --no-cache-dir --upgrade pip
          pip install --no-cache-dir j2cli wheel homebrew-pypi-poet

      - name: Parse semver string
        id: semver
        uses: dbt-labs/actions/parse-semver@v1
        with:
          version: ${{ github.event.inputs.version }}

      - name: Get python package info
        id: package-info
        uses: dbt-labs/actions/py-package-info@main
        with:
          package: ${{ github.event.inputs.dbt-package }}
          version: ${{ steps.semver.outputs.version }}

      - name: Generate formula resources
        id: gen-resources
        run: |
          pip install ${{ github.event.inputs.dbt-package }}==${{ steps.semver.outputs.version }} --no-cache-dir
          RESOURCES_FILE_PATH=$BUILD_DIR/resources.txt
          poet -r ${{ github.event.inputs.dbt-package }} | .github/process-python-resources.py ${{ github.event.inputs.dbt-package }} > "$RESOURCES_FILE_PATH"
          cat "$RESOURCES_FILE_PATH"
          echo "formula-resources-file=${RESOURCES_FILE_PATH}" >> $GITHUB_OUTPUT

      - name: Generate formula file name
        id: gen-filename
        run: |
          if [ ${{ steps.semver.outputs.is-pre-release }} == 1 ]
          then
            echo "This is a prelease"
            FILENAME_WITH_VERSION="Formula/${{ github.event.inputs.dbt-package }}@${{ steps.semver.outputs.base-version }}-${{ steps.semver.outputs.pre-release }}.rb"
          else
            echo "This is a final release"
            FILENAME_WITH_VERSION="Formula/${{ github.event.inputs.dbt-package }}@${{ steps.semver.outputs.version }}.rb"
          fi
          echo "filename-with-version=${FILENAME_WITH_VERSION}" >> $GITHUB_OUTPUT
          FILENAME="Formula/${{ github.event.inputs.dbt-package }}.rb"
          echo "filename=${FILENAME}" >> $GITHUB_OUTPUT

      - name: Generate formula class name
        id: gen-classname
        run: |
          PACKAGE_NAME=$(python -c "print(''.join(word.title() for word in '${{ github.event.inputs.dbt-package }}'.split('-')))")
          PACKAGE_VERSION=$(python -c "print(''.join(word.title() for word in '${{ steps.semver.outputs.version }}'.split('.')))")
          echo "classname-with-version=${PACKAGE_NAME}AT${PACKAGE_VERSION}" >> $GITHUB_OUTPUT
          echo "classname=${PACKAGE_NAME}" >> $GITHUB_OUTPUT

      - name: Generate versioned formula file
        env:
          package: ${{ github.event.inputs.dbt-package }}
          classname: ${{ steps.gen-classname.outputs.classname-with-version }}
          summary: ${{ steps.package-info.outputs.summary }}
          homepage: ${{ steps.package-info.outputs.homepage }}
          source_url: ${{ steps.package-info.outputs.source-url }}
          source_checksum: ${{ steps.package-info.outputs.source-checksum }}
        run: |
          export resources=$(cat "${{ steps.gen-resources.outputs.formula-resources-file }}")
          j2 .github/formula-template.j2 > "${{ steps.gen-filename.outputs.filename-with-version }}"
          cat "${{ steps.gen-filename.outputs.filename-with-version }}"

      - name: Create alias for default formula
        if: ${{ fromJson(github.event.inputs.is-default-version) }}
        run: |
          mkdir -p Aliases
          cd Aliases
          ln -sf ../${{ steps.gen-filename.outputs.filename-with-version }} ${{ github.event.inputs.dbt-package }}@${{ steps.semver.outputs.major }}.${{ steps.semver.outputs.minor }}

      - name: Format versioned formula file
        if: ${{ !env.ACT }}
        run: |
          brew style --formula --fix "${{ steps.gen-filename.outputs.filename-with-version }}"

      - name: Generate default formula file
        if: ${{ fromJson(github.event.inputs.is-default-version) }}
        env:
          package: ${{ github.event.inputs.dbt-package }}
          classname: ${{ steps.gen-classname.outputs.classname }}
          summary: ${{ steps.package-info.outputs.summary }}
          homepage: ${{ steps.package-info.outputs.homepage }}
          source_url: ${{ steps.package-info.outputs.source-url }}
          source_checksum: ${{ steps.package-info.outputs.source-checksum }}
        run: |
          export resources=$(cat "${{ steps.gen-resources.outputs.formula-resources-file }}")
          j2 .github/formula-template.j2 > "${{ steps.gen-filename.outputs.filename }}"
          cat "${{ steps.gen-filename.outputs.filename }}"

      - name: Format default formula file
        if: ${{ !env.ACT && fromJson(github.event.inputs.is-default-version) }}
        run: |
          brew style --formula --fix "${{ steps.gen-filename.outputs.filename }}"

      - name: Create pull request
        if: ${{ !env.ACT }}
        uses: peter-evans/create-pull-request@v5
        with:
          title: "${{ github.event.inputs.dbt-package }} formula for version ${{ github.event.inputs.version }}"
          branch: "${{ github.event.inputs.dbt-package }}-formula/${{ github.event.inputs.version }}"
          body: |
            Generated formula to install ${{ github.event.inputs.dbt-package }} for version ${{ github.event.inputs.version }}