main.yml

name: CI

on: 
  # push: -- just run on PRs for now
  pull_request:
  workflow_dispatch:

jobs:
  check-base-branch:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Check base branch
        run: |
          git fetch origin --prune
          
          CURRENT_BRANCH=${{ github.event.pull_request.head.ref }}
          TARGET_BRANCH="${{ github.event.pull_request.base.ref }}"

          COMMON_ANCESTOR=$(git merge-base origin/$CURRENT_BRANCH origin/$TARGET_BRANCH)
          COMMITS_BEHIND=$(git rev-list --count origin/$TARGET_BRANCH ^$COMMON_ANCESTOR)

          if [ "$COMMITS_BEHIND" -eq 0 ]; then
            echo "Your branch is up-to-date with the target branch."
          elif [ "$COMMITS_BEHIND" -eq 1 ]; then
            echo "Your branch is 1 commit behind the target branch."
            exit 1
          else
            echo "Your branch is $COMMITS_BEHIND commits behind the target branch."
            exit 1
          fi

  # build:
  #   needs: [check-base-branch]

  #   runs-on: ubuntu-latest
  #   services:
  #     postgres:
  #       image: postgis/postgis:13-3.0
  #       env:
  #         POSTGRES_PASSWORD: postgis
  #         POSTGRES_DB: ${{ github.event.repository.name }}
  #       ports:
  #         - 5432:5432
  #       options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5

  #   strategy:
  #     fail-fast: false
  #     matrix:
  #       python-version: ["3.10", "3.11", "3.12"]

  #   steps:
  #     - uses: actions/checkout@v4

  #     - name: Set up Python ${{ matrix.python-version }}
  #       uses: actions/setup-python@v5
  #       with:
  #         python-version: ${{ matrix.python-version }}
  #         check-latest: true

  #     - name: Install Java, GDAL, and other system dependencies
  #       run: |
  #         sudo apt update
  #         sudo apt-get install libxml2-dev libpq-dev openjdk-8-jdk libgdal-dev libxslt-dev
  #         echo Postgres and ES dependencies installed

  #     - name: Install python packages
  #       run: |
  #         python -m pip install --upgrade pip
  #         pip install .
  #         pip install -r ${{ github.event.repository.name }}/install/requirements.txt
  #         pip install -r ${{ github.event.repository.name }}/install/requirements_dev.txt
  #         echo Python packages installed

  #     - uses: ankane/setup-elasticsearch@v1
  #       with:
  #         elasticsearch-version: 8

  #     - name: Check for missing migrations
  #       run: |
  #         python manage.py makemigrations --check

  #     - name: Run unit tests
  #       run: |
  #         python -W default::DeprecationWarning -m coverage run manage.py test tests --pattern="*.py" --settings="tests.test_settings"

  #     - name: Generate report coverage
  #       run: |
  #         coverage json

  #     - name: Upload coverage report as artifact
  #       uses: actions/upload-artifact@v4
  #       with:
  #         name: coverage-report
  #         path: coverage.json
  #         overwrite: true

  # check-coverage:
  #   needs: [check-base-branch, build]

  #   runs-on: ubuntu-latest

  #   steps:
  #     - uses: actions/checkout@v4

  #     - name: Set up Python
  #       uses: actions/setup-python@v5
  #       with:
  #         python-version: '3.x' # Use the latest available version
  #         check-latest: true

  #     - name: Download coverage report artifact
  #       uses: actions/download-artifact@v4
  #       with:
  #         name: coverage-report
  #         path: .

  #     - name: Report coverage
  #       run: |
  #         cat coverage.json

  #     - name: Retrieve baseline coverage
  #       run: |
  #         git fetch origin ${{ github.event.pull_request.base.ref }}:${{ github.event.pull_request.base.ref }}

  #         if ! git show ${{ github.event.pull_request.base.ref }}:coverage.json > /dev/null; then
  #           echo "Error: coverage.json does not exist in the branch."
  #           exit 1
  #         fi

  #         baseline_coverage=$(git show ${{ github.event.pull_request.base.ref }}:coverage.json | grep -o '"totals": {[^}]*' | grep -o '"percent_covered": [0-9.]*' | awk -F ': ' '{print $2}')
  #         echo "$baseline_coverage" > .coverage_baseline

  #     - name: Compare coverage with baseline
  #       if: github.event_name == 'pull_request'
  #       run: |
  #         current_coverage=$(cat coverage.json | grep -o '"totals": {[^}]*' | grep -o '"percent_covered": [0-9.]*' | awk -F ': ' '{print $2}')
  #         baseline_coverage=$(cat .coverage_baseline)

  #         # Compare current coverage with baseline coverage using floating-point comparison
  #         if awk -v current="$current_coverage" -v baseline="$baseline_coverage" 'BEGIN { exit (current < baseline) ? 0 : 1 }'; then
  #           echo "Coverage decreased from $baseline_coverage% to $current_coverage%"
  #           exit 1
  #         else
  #           echo "$baseline_coverage% == $current_coverage%, Coverage didn't decrease. Committing new coverage.json."

  #           git config user.name github-actions
  #           git config user.email github-actions@github.com

  #           git add -f coverage.json
  #           git commit -m "automatically update coverage.json"
  #           git push -f origin HEAD:${{ github.head_ref }}
  #         fi