name: Packages

on:
  push:
    branches:
    - master
    paths:
    - 'packages/**'
  pull_request:
    paths:
    - 'packages/**'

jobs:
  build:
    runs-on: ubuntu-latest
    env:
      ANDROID_HOME: "/opt/termux/android-sdk"
      NDK: "/opt/termux/android-ndk"
    strategy:
      matrix:
        target_arch: [aarch64, arm, i686, x86_64]
    steps:
    - name: Clone repository
      uses: actions/checkout@v2
      with:
        fetch-depth: 1000
    - name: Setup build environment
      run: |
        sudo mkdir -p /opt/termux
        sudo chown $(id -u) /opt/termux
        mkdir -p ./debs
        ./scripts/setup-ubuntu.sh
        ./scripts/setup-android-sdk.sh >/dev/null
    - name: Build
      run: |
        BASE_COMMIT=$(jq --raw-output .pull_request.base.sha "$GITHUB_EVENT_PATH")
        OLD_COMMIT=$(jq --raw-output .commits[0].id "$GITHUB_EVENT_PATH")
        HEAD_COMMIT=$(jq --raw-output .commits[-1].id "$GITHUB_EVENT_PATH")
        if [ "$BASE_COMMIT" = "null" ]; then
          if [ "$OLD_COMMIT" = "$HEAD_COMMIT" ]; then
            echo "Processing commit: ${HEAD_COMMIT}"
            CHANGED_FILES=$(git diff-tree --no-commit-id --name-only -r "${HEAD_COMMIT}")
          else
            echo "Processing commit range: ${OLD_COMMIT}..${HEAD_COMMIT}"
            CHANGED_FILES=$(git diff-tree --no-commit-id --name-only -r "${OLD_COMMIT}" "${HEAD_COMMIT}")
          fi
        else
          echo "Processing pull request #$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH"): ${BASE_COMMIT}..HEAD"
          CHANGED_FILES=$(git diff-tree --no-commit-id --name-only -r "${BASE_COMMIT}" "HEAD")
        fi
        PACKAGE_NAMES=$(sed -nE 's@^packages/([^/]*)/([^/]*)(/.*)?$@\1@p' <<< "$CHANGED_FILES" | sort | uniq)
        for pkg in $PACKAGE_NAMES; do
          if [ ! -d "./packages/${pkg}" ]; then
            PACKAGE_NAMES=$(sed -E "s/(^|\s\s*)${pkg}(\$|\s\s*)/ /g" <<< "$PACKAGE_NAMES")
            echo "$pkg" >> ./debs/deleted_packages.txt
          fi
        done
        PACKAGE_NAMES=$(sed 's/[[:blank:]]*$//' <<< "$PACKAGE_NAMES")
        ./scripts/lint-packages.sh $(echo "$PACKAGE_NAMES" | awk '{ print "./packages/"$0"/build.sh" }')
        ./build-package.sh -a ${{ matrix.target_arch }} -I ${PACKAGE_NAMES}
        echo "${PACKAGE_NAMES}" > ./debs/built_packages.txt
        tar cf debs.tar debs
    - name: Store *.deb files
      uses: actions/upload-artifact@v1
      with:
        name: termux-packages
        path: ./debs.tar
  upload:
    if: github.event_name != 'pull_request'
    needs: build
    runs-on: ubuntu-latest
    steps:
    - name: Clone repository
      uses: actions/checkout@v2
    - name: Get *.deb files
      uses: actions/download-artifact@v1
      with:
        name: termux-packages
    - name: Upload to bintray.com
      env:
        BINTRAY_USERNAME: xeffyr
        BINTRAY_API_KEY: ${{ secrets.BINTRAY_API_KEY }}
        BINTRAY_GPG_SUBJECT: termux
        BINTRAY_GPG_PASSPHRASE: ${{ secrets.BINTRAY_GPG_PASSWORD }}
      run: |
        tar xf debs.tar
        TO_DELETE=$(test -f ./debs/deleted_packages.txt && cat ./debs/deleted_packages.txt || true)
        if [ -n "$TO_DELETE" ]; then
          ./scripts/package_uploader.sh -d $TO_DELETE
        fi
        TO_UPLOAD=$(test -f ./debs/built_packages.txt && cat ./debs/built_packages.txt || true)
        if [ -n "$TO_UPLOAD" ]; then
          ./scripts/package_uploader.sh -p ./debs $TO_UPLOAD
        fi