generate-python.yml

name: Generate Python

on:
  push:
    branches:
      - "**"
      - "!main"
    paths:
      - "src/**/*.json"
      - ".github/workflows/generate-python.yml"

# Allow only one generate workflow to run at a time. This avoids race conditions when
# pushing to the same branch.
concurrency: "generate"

jobs:
  generate-python:
    runs-on: ubuntu-latest
    steps:
      - name: Generate token
        id: generate_token
        uses: actions/create-github-app-token@v1
        with:
          app-id: ${{ secrets.DAPLA_BOT_APP_ID }}
          private-key: ${{ secrets.DAPLA_BOT_PRIVATE_KEY }}

      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          token: ${{ steps.generate_token.outputs.token }}

      - name: Configure Git
        run: |
          git config user.name "dapla-bot[bot]"
          git config user.email "143391972+dapla-bot[bot]@users.noreply.github.com"

      - uses: actions/setup-python@v2
        with:
          python-version: 3.11.5

      - name: Install pipx
        run: |
          python -m pip install --upgrade pipx
          python -m pipx ensurepath

      - name: Install datamodel-codegen
        run: |
          python -m pipx install datamodel-code-generator==0.25.2

      - name: Generate Python
        run: >
          datamodel-codegen
          --input-file-type jsonschema
          --input src/metadata-container-json-schema.json
          --output-model-type pydantic_v2.BaseModel
          --base-class "datadoc_model.datadoc_base_model.DatadocBaseModel"
          --use-default
          --use-title-as-name
          --use-one-literal-as-default
          --force-optional
          --use-subclass-enum
          --use-standard-collections
          --use-double-quotes
          --target-python-version 3.10
          --output generated/python/datadoc_model/datadoc_model/model.py

      - name: Check for modified files
        id: git-check
        run: echo modified=$(if [ -n "$(git status --porcelain)" ]; then echo "true"; else echo "false"; fi)  >> $GITHUB_OUTPUT

      - name: Commit
        if: steps.git-check.outputs.modified == 'true'
        run: |
          git add -A
          git commit -m '[GENERATE] Pydantic models from JSON Schema'

      - name: Push
        if: steps.git-check.outputs.modified == 'true'
        run: |
          git pull --rebase origin "${GITHUB_REF}"
          git push origin "${GITHUB_REF}"