name: Build and Release Relayer

permissions:
  contents: write

on:
  push:
    tags:
      - 'btc-relayer-v[0-9]+\.[0-9]+\.[0-9]+*'
  workflow_dispatch:

jobs:
  build:
    runs-on: ${{ matrix.runner }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-unknown-linux-gnu
            runner: ubuntu-latest
            variant: default
          - target: x86_64-unknown-linux-gnu
            runner: ubuntu-latest
            variant: zcash
          - target: x86_64-unknown-linux-gnu
            runner: ubuntu-latest
            variant: dogecoin
          - target: aarch64-apple-darwin
            runner: macos-latest
            variant: default
          - target: aarch64-apple-darwin
            runner: macos-latest
            variant: zcash
          - target: aarch64-apple-darwin
            runner: macos-latest
            variant: dogecoin

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Install Rust toolchain
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true

      - name: Add cross-compile target
        run: rustup target add ${{ matrix.target }}

      - name: Build relayer ( ${{ matrix.target }} / ${{ matrix.variant }} )
        working-directory: relayer
        run: |
          case "${{ matrix.variant }}" in
            default) FLAGS="" ;;
            zcash)   FLAGS="--no-default-features --features zcash" ;;
            dogecoin)FLAGS="--no-default-features --features dogecoin" ;;
          esac

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

      - name: Collect binary into artifacts/
        run: |
          mkdir -p artifacts
          cp "relayer/target/${{ matrix.target }}/release/btc-relayer" \
             "artifacts/relayer-${{ matrix.target }}-${{ matrix.variant }}"

      - name: Upload per-variant artifact
        uses: actions/upload-artifact@v4
        with:
          name: relayer-${{ matrix.target }}-${{ matrix.variant }}
          path: artifacts/relayer-${{ matrix.target }}-${{ matrix.variant }}

  release:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Download all relayer binaries
        uses: actions/download-artifact@v4
        with:
          path: artifacts

      - name: Create GitHub Release with all binaries
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ github.ref_name }}
          files: artifacts/**

      - name: Cleanup
        run: rm -rf artifacts