name: Build for Raspberry Pi

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

env:
  CARGO_TERM_COLOR: always
  # Target for 32-bit Raspberry Pi (Raspberry Pi OS)
  RUST_TARGET: armv7-unknown-linux-gnueabihf

jobs:
  build:
    name: Build for armv7
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: ${{ env.RUST_TARGET }}

      - name: Install cross-compilation dependencies
        run: |
          sudo dpkg --add-architecture armhf
          sudo apt-get update -y
          sudo apt-get install -y gcc-arm-linux-gnueabihf libudev-dev:armhf

      - name: Build release binary
        run: cargo build --release --target ${{ env.RUST_TARGET }}
        env:
          # Set linker for the target
          CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_LINKER: arm-linux-gnueabihf-gcc
          # Configure pkg-config for cross-compilation
          PKG_CONFIG_ALLOW_CROSS: 1
          PKG_CONFIG_PATH: /usr/lib/arm-linux-gnueabihf/pkgconfig

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: timeturner-armv7
          path: target/${{ env.RUST_TARGET }}/release/timeturner