name: Continuous integration - compiler

on:
  push:
    branches: [ main, testci ]
  pull_request:

env:
  CARGO_TERM_COLOR: always

jobs:
  conditions:
    runs-on: ubuntu-20.04
    outputs:
      proceed: ${{ steps.interface-changes.outputs.any_changed == 'true' || github.ref == 'refs/heads/main' }}
    steps:
      - name: Code checkout
        uses: actions/checkout@v3

      - name: Detect changes on API to compiler
        uses: tj-actions/changed-files@v19
        id: interface-changes
        with:
          files: |
            concrete-optimizer-cpp/src/cpp/*

      - run: echo ${{ steps.interface-changes.outputs.any_changed }}

  check-compiler-compatibility:
    runs-on: ubuntu-20.04
    needs: conditions
    if: ${{ needs.conditions.outputs.proceed == 'true' }}
    steps:
      # A SSH private key is required as some dependencies are from private repos
      - name: Set ssh keys
        uses: webfactory/ssh-agent@v0.5.2
        with:
          ssh-private-key: ${{ secrets.CONCRETE_COMPILER_CI_SSH_PRIVATE }}

      - name: Compiler checkout
        uses: actions/checkout@v3
        with:
          submodules: recursive
          repository: zama-ai/concrete-compiler-internal
          ssh-key: ${{ secrets.CONCRETE_COMPILER_CI_SSH_PRIVATE }}

      - name: Override optimizer for compiler
        uses: actions/checkout@v3
        with:
          path: compiler/concrete-optimizer

      - name: Install rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable

      - name: Download cargo cache
        uses: Swatinem/rust-cache@v1

      - name: Concrete-Optimizer
        run: |
          cd compiler
          make concrete-optimizer-lib

      - name: Build compiler
        uses: addnab/docker-run-action@v3
        with:
          registry: ghcr.io
          image: ghcr.io/zama-ai/concrete-compiler
          username: zama-bot
          password: ${{ secrets.ZAMA_BOT_TOKEN }}
          options: >-
            -v ${{ github.workspace }}/compiler:/compiler
          shell: bash
          run: |
            set -e
            cd /compiler
            export PYTHONPATH=""
            make CCACHE=ON BUILD_DIR=/build concretecompiler