name: Release

on:
  push:
    tags:
      - "v*"
  workflow_dispatch:
    inputs:
      tag:
        description: "Tag to build and upload assets for (e.g. v0.6.5)"
        required: true

permissions:
  contents: write

jobs:
  notes:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          # При ручном запуске чекаутим нужный тег
          ref: ${{ github.event.inputs.tag || github.ref }}

      - name: Prepare Release Notes
        shell: bash
        run: |
          set -euo pipefail
          # При ручном запуске берём версию из инпута, иначе из тега
          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
            tag="${{ github.event.inputs.tag }}"
            tag="${tag#v}"
          else
            tag="${GITHUB_REF_NAME#v}"
          fi
          notes_file=".github/release-notes.md"
          if grep -q "^## \\[${tag}\\]" CHANGELOG.md; then
            awk -v ver="$tag" '
              $0 ~ "^## \\[" ver "\\]" {found=1; next}
              found && $0 ~ "^## \\[" {exit}
              found {print}
            ' CHANGELOG.md | sed -e '${/^$/d;}' > "$notes_file"
          else
            echo "No CHANGELOG section for $tag." > "$notes_file"
            git log -1 --pretty=format:"%s%n%n%b" >> "$notes_file"
          fi

      - name: Upload Notes Artifact
        uses: actions/upload-artifact@v4
        with:
          name: release-notes
          path: .github/release-notes.md

  build:
    strategy:
      fail-fast: false
      matrix:
        include:
          # ── Linux GNU ──────────────────────────────────────────────────────
          - os: ubuntu-latest
            target: x86_64-unknown-linux-gnu

          - os: ubuntu-latest
            target: aarch64-unknown-linux-gnu
            apt: gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
            env_cc: CC_aarch64_unknown_linux_gnu=aarch64-linux-gnu-gcc
            env_linker: CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc

          # ── Linux Musl ─────────────────────────────────────────────────────
          - os: ubuntu-latest
            target: x86_64-unknown-linux-musl
            apt: musl-tools
            env_cc: CC_x86_64_unknown_linux_musl=musl-gcc
            env_linker: CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER=musl-gcc

          - os: ubuntu-latest
            target: aarch64-unknown-linux-musl
            musl_cross: aarch64-linux-musl-cross
            env_cc: CC_aarch64_unknown_linux_musl=aarch64-linux-musl-gcc
            env_linker: CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=aarch64-linux-musl-gcc

          # ── macOS ──────────────────────────────────────────────────────────
          - os: macos-15-intel
            target: x86_64-apple-darwin

          - os: macos-latest
            target: aarch64-apple-darwin

          # ── Windows MSVC ───────────────────────────────────────────────────
          - os: windows-latest
            target: x86_64-pc-windows-msvc

          - os: windows-latest
            target: aarch64-pc-windows-msvc

          # ── Windows GNU ────────────────────────────────────────────────────
          - os: windows-latest
            target: x86_64-pc-windows-gnu

          # gnullvm исключён: LLVM MinGW не предустановлен на GitHub Actions

    runs-on: ${{ matrix.os }}
    needs: notes
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.inputs.tag || github.ref }}

      - name: Download Release Notes
        uses: actions/download-artifact@v4
        with:
          name: release-notes
          path: .github

      - name: Install apt packages
        if: runner.os == 'Linux' && matrix.apt != ''
        run: |
          sudo apt-get update
          sudo apt-get install -y gcc-aarch64-linux-gnu g++-aarch64-linux-gnu musl-tools
          case "${{ matrix.target }}" in
            aarch64-unknown-linux-gnu)
              echo "CC_aarch64-unknown-linux-gnu=aarch64-linux-gnu-gcc" >> $GITHUB_ENV
              echo "AR_aarch64-unknown-linux-gnu=aarch64-linux-gnu-ar" >> $GITHUB_ENV
              ;;
            x86_64-unknown-linux-musl)
              echo "CC_x86_64-unknown-linux-musl=x86_64-linux-musl-gcc" >> $GITHUB_ENV
              ;;
            aarch64-unknown-linux-musl)
              curl -L https://musl.cc/aarch64-linux-musl-cross.tgz -o /tmp/musl-aarch64.tgz
              sudo tar xzf /tmp/musl-aarch64.tgz -C /opt
              echo "/opt/aarch64-linux-musl-cross/bin" >> $GITHUB_PATH
              echo "CC_aarch64-unknown-linux-musl=aarch64-linux-musl-gcc" >> $GITHUB_ENV
              echo "AR_aarch64-unknown-linux-musl=aarch64-linux-musl-ar" >> $GITHUB_ENV
              ;;
          esac

      - name: Setup LLVM + MinGW (gnullvm)
        if: contains(matrix.target, 'gnullvm')
        shell: pwsh
        run: |
          choco install llvm mingw -y --no-progress
          echo "C:\Program Files\LLVM\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: ${{ matrix.target }}

      - name: Build
        shell: bash
        env:
          MATRIX_ENV_CC: ${{ matrix.env_cc }}
          MATRIX_ENV_LINKER: ${{ matrix.env_linker }}
        run: |
          if [[ -n "${MATRIX_ENV_CC:-}" ]]; then
            export "${MATRIX_ENV_CC?}"
          fi
          if [[ -n "${MATRIX_ENV_LINKER:-}" ]]; then
            export "${MATRIX_ENV_LINKER?}"
          fi
          cargo build --release --target ${{ matrix.target }}

      - name: Derive version string
        shell: bash
        run: |
          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
            RAW_TAG="${{ github.event.inputs.tag }}"
          else
            RAW_TAG="${GITHUB_REF_NAME}"
          fi
          echo "RELEASE_TAG=${RAW_TAG}" >> "$GITHUB_ENV"
          echo "RELEASE_VERSION=${RAW_TAG#v}" >> "$GITHUB_ENV"

      - name: Derive asset name (Unix)
        if: runner.os != 'Windows'
        shell: bash
        run: |
          echo "ASSET_NAME=dcr-${{ matrix.target }}-${RELEASE_VERSION}" >> "$GITHUB_ENV"

      - name: Derive asset name (Windows)
        if: runner.os == 'Windows'
        shell: pwsh
        run: |
          "ASSET_NAME=dcr-${{ matrix.target }}-$($env:RELEASE_VERSION).exe" >> $env:GITHUB_ENV

      - name: Prepare Artifact (Unix)
        if: runner.os != 'Windows'
        shell: bash
        run: cp target/${{ matrix.target }}/release/dcr "$ASSET_NAME"

      - name: Prepare Artifact (Windows)
        if: runner.os == 'Windows'
        shell: pwsh
        run: Copy-Item "target/${{ matrix.target }}/release/dcr.exe" "$env:ASSET_NAME"

      - name: Upload Release Asset
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ env.RELEASE_TAG }}
          files: ${{ env.ASSET_NAME }}
          body_path: .github/release-notes.md
          prerelease: ${{ contains(env.RELEASE_TAG, '-') }}