name: VC gen

on:
  push:
    branches:
      - master

jobs:
  build-vc:
    runs-on: ubuntu-18.04
    steps:
    - uses: actions/checkout@v2
    - name: Build V
      run: make
    - name: Regenerate v.c and v_win.c
      run: |
        git config --global user.email "vlang-bot@users.noreply.github.com"
        git config --global user.name "vlang-bot"

        COMMIT_HASH=$(git rev-parse --short HEAD)
        COMMIT_MSG=$(git log -1 --oneline --pretty='%s' HEAD)

        rm -rf vc
        git clone https://vlang-bot:${{ secrets.VLANG_BOT_SECRET }}@github.com/vlang/vc.git

        rm -rf vc/v.c vc/v_win.c

        ./v -o vc/v.c -os cross cmd/v
        ./v -o vc/v_win.c -os windows cmd/v

        sed -i "1s/^/#define V_COMMIT_HASH \"$COMMIT_HASH\"\n/" vc/v.c
        sed -i "1s/^/#define V_COMMIT_HASH \"$COMMIT_HASH\"\n/" vc/v_win.c

        # ensure the C files are over 5000 lines long, as a safety measure
        [ $(wc -l < vc/v.c) -gt 5000 ]
        [ $(wc -l < vc/v_win.c) -gt 5000 ]

        git -C vc add v.c v_win.c
        git -C vc commit -m "[v:master] $COMMIT_HASH - $COMMIT_MSG"

        git pull --rebase origin master # in case there are recent commits
        git -C vc push