name: pr-size

on:
  pull_request:
    branches: [ MK3, MK3_* ]

env:
    TARGETS: "MK3S-EINSy10a_ENGLISH MK3-EINSy10a_ENGLISH"

jobs:
  build:
    runs-on: ubuntu-latest

    steps:

    # setup base required dependencies
    - name: Setup dependencies
      run: |
          sudo apt-get install cmake ninja-build python3-pyelftools python3-regex python3-polib

    # build the PR branch
    - name: Checkout PR
      uses: actions/checkout@v3

    - name: Setup build dependencies
      run: |
          ./utils/bootstrap.py

    - name: Build PR
      run: |
          rm -rf build-pr
          mkdir build-pr
          cd build-pr
          cmake .. -DCMAKE_TOOLCHAIN_FILE="../cmake/AvrGcc.cmake" -DCMAKE_BUILD_TYPE=Release -G Ninja
          ninja $TARGETS

    # save pr-size for later use
    - name: Save pr-size from PR
      run: |
          cp -f ./.github/workflows/pr-size.sh build-pr

    # build the base branch
    - name: Checkout base
      uses: actions/checkout@v3
      with:
        clean: false
        ref: ${{ github.event.pull_request.base.ref }}

    - name: Build base
      run: |
          rm -rf build-base
          mkdir build-base
          cd build-base
          cmake .. -DCMAKE_TOOLCHAIN_FILE="../cmake/AvrGcc.cmake" -DCMAKE_BUILD_TYPE=Release -G Ninja
          ninja $TARGETS

    # extract/show build differences
    - name: Calculate binary changes
      run: |
          rm -rf build-changes
          ./build-pr/pr-size.sh build-changes build-base build-pr $TARGETS

    - name: Add PR Comment
      uses: mshick/add-pr-comment@v2
      with:
        message-path: build-changes