name: Build

on:
  push:
    branches: [master]
  pull_request:

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        include:
          - runner: ubuntu-latest
            name: linux-x86_64
            musl-target: x86_64-unknown-linux-musl
          - runner: ubuntu-24.04-arm
            name: linux-arm64
            musl-target: aarch64-unknown-linux-musl
          - runner: macos-latest
            name: macos-arm64
          - runner: macos-13
            name: macos-x86_64
    runs-on: ${{ matrix.runner }}
    steps:
      - uses: actions/checkout@v4

      - uses: actions/checkout@v4
        with:
          repository: ilyakooo0/knot
          path: knot

      - uses: dtolnay/rust-toolchain@stable

      - name: Install musl toolchain
        if: runner.os == 'Linux'
        run: |
          sudo apt-get update
          sudo apt-get install -y musl-tools
          rustup target add ${{ matrix.musl-target }}

      - uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            knot/target
          key: ${{ matrix.name }}-cargo-${{ hashFiles('knot/Cargo.lock') }}

      - name: Build knotc
        working-directory: knot
        run: cargo build --release -p knot-compiler

      - name: Build musl runtime
        if: runner.os == 'Linux'
        working-directory: knot
        run: cargo build --release -p knot-runtime --target ${{ matrix.musl-target }}

      - name: Compile server (Linux static)
        if: runner.os == 'Linux'
        run: |
          printf '#!/bin/sh\nexec musl-gcc -static "$@"\n' > /tmp/static-cc
          chmod +x /tmp/static-cc
          CC=/tmp/static-cc \
          KNOT_RUNTIME_LIB=${{ github.workspace }}/knot/target/${{ matrix.musl-target }}/release/libknot_runtime.a \
          ./knot/target/release/knotc build server.knot

      - name: Compile server (macOS)
        if: runner.os == 'macOS'
        run: ./knot/target/release/knotc build server.knot

      - name: Verify binary
        run: file server

      - uses: actions/upload-artifact@v4
        with:
          name: server-${{ matrix.name }}
          path: server

  release:
    needs: build
    if: github.ref == 'refs/heads/master' && github.event_name == 'push'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/download-artifact@v4

      - uses: actions/checkout@v4
        with:
          path: repo

      - name: Generate version
        id: version
        run: echo "tag=$(git -C repo log -1 --format='%cd' --date='format:%Y.%m.%d.%H%M')" >> "$GITHUB_OUTPUT"

      - name: Prepare release assets
        run: |
          for dir in server-*/; do
            name="${dir%/}"
            mv "${dir}server" "${name}.tmp"
            rm -rf "$dir"
            mv "${name}.tmp" "$name"
          done
          chmod +x server-*

      - uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ steps.version.outputs.tag }}
          name: ${{ steps.version.outputs.tag }}
          files: server-*