name: Release

on:
  push:
    tags:
      - '[0-9]+.[0-9]+.[0-9]+'
  workflow_dispatch:

concurrency:
  group: release-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read
  packages: write

env:
  CARGO_TERM_COLOR: always
  BINARY_NAME: telemt

jobs:
  build:
    name: Build ${{ matrix.target }}
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        include:
          # ===== GNU / glibc =====
          - target: x86_64-unknown-linux-gnu
            asset_name: telemt-x86_64-linux-gnu
          - target: aarch64-unknown-linux-gnu
            asset_name: telemt-aarch64-linux-gnu

          # ===== MUSL =====
          - target: x86_64-unknown-linux-musl
            asset_name: telemt-x86_64-linux-musl

    steps:
      - uses: actions/checkout@v4

      # ---------- Toolchain ----------
      - uses: dtolnay/rust-toolchain@v1
        with:
          toolchain: stable
          targets: |
            x86_64-unknown-linux-gnu
            aarch64-unknown-linux-gnu
            x86_64-unknown-linux-musl

      # ---------- System deps (bookworm) ----------
      - name: Install build deps
        run: |
          sudo apt-get update
          sudo apt-get install -y --no-install-recommends \
            build-essential \
            clang \
            lld \
            pkg-config \
            musl-tools \
            gcc-aarch64-linux-gnu \
            g++-aarch64-linux-gnu \
            ca-certificates

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

      # ---------- Build ----------
      - name: Build
        env:
          CC_x86_64_unknown_linux_gnu: clang
          CXX_x86_64_unknown_linux_gnu: clang++

          CC_aarch64_unknown_linux_gnu: aarch64-linux-gnu-gcc
          CXX_aarch64_unknown_linux_gnu: aarch64-linux-gnu-g++

          CC_x86_64_unknown_linux_musl: musl-gcc

          RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=lld"
        run: |
          case "${{ matrix.target }}" in
            x86_64-unknown-linux-musl)
              export RUSTFLAGS="-C target-feature=+crt-static"
              ;;
          esac

          cargo build --release --target ${{ matrix.target }}

      # ---------- Package ----------
      - name: Package
        run: |
          mkdir -p dist

          BIN=target/${{ matrix.target }}/release/${{ env.BINARY_NAME }}

          cp "$BIN" dist/${{ env.BINARY_NAME }}-${{ matrix.target }}

          cd dist
          tar -czf ${{ matrix.asset_name }}.tar.gz ${{ env.BINARY_NAME }}-${{ matrix.target }}
          sha256sum ${{ matrix.asset_name }}.tar.gz > ${{ matrix.asset_name }}.sha256

      - uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.asset_name }}
          path: |
            dist/${{ matrix.asset_name }}.tar.gz
            dist/${{ matrix.asset_name }}.sha256

  docker:
    name: Docker
    runs-on: ubuntu-latest
    needs: build
    continue-on-error: true

    steps:
      - uses: actions/checkout@v4

      - uses: actions/download-artifact@v4
        with:
          path: artifacts

      - name: Extract binaries
        run: |
          mkdir dist
          find artifacts -name "*.tar.gz" -exec tar -xzf {} -C dist \;

          cp dist/telemt-x86_64-unknown-linux-musl dist/telemt || true

      - uses: docker/setup-qemu-action@v3
      - uses: docker/setup-buildx-action@v3

      - name: Login to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract version
        id: vars
        run: echo "VERSION=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT

      - name: Build & Push prod
        uses: docker/build-push-action@v6
        with:
          context: .
          target: prod
          push: true
          platforms: linux/amd64,linux/arm64
          tags: |
            ghcr.io/${{ github.repository }}:${{ steps.vars.outputs.VERSION }}
            ghcr.io/${{ github.repository }}:latest
          build-args: |
            BINARY=dist/telemt

  release:
    name: Release
    runs-on: ubuntu-latest
    needs: build

    permissions:
      contents: write

    steps:
      - uses: actions/download-artifact@v4
        with:
          path: artifacts

      - name: Flatten artifacts
        run: |
          mkdir dist
          find artifacts -type f -exec cp {} dist/ \;

      - name: Create Release
        uses: softprops/action-gh-release@v2
        with:
          files: dist/*
          generate_release_notes: true
          draft: false
          prerelease: ${{ contains(github.ref, '-rc') || contains(github.ref, '-beta') || contains(github.ref, '-alpha') }}