name: deploy

on:
  push:
    tags:
      - 'v*.*.*'

jobs:

  linux-binaries:
    permissions:
      # Grant the GITHUB_TOKEN additional permissions necessary for creating a release.
      # We only run this action for tags, so any code has already been reviewed by
      # someone with permissions to create a tag.
      contents: write

    runs-on: ubuntu-20.04

    steps:
    - uses: actions/checkout@v3

    - name: Install stable
      uses: dtolnay/rust-toolchain@stable

    - name: semver
      run: |
        cargo +stable install cargo-semver-checks --locked
        cargo +stable semver-checks check-release

    - name: Build cbindgen
      run: |
        cargo +stable build --release

    - name: Strip cbindgen
      run: |
        strip target/release/cbindgen

    - name: Handle release data and files
      id: tagName
      run: |
        VERSION=$(cargo pkgid | cut -d# -f2 | cut -d: -f2)
        echo "::set-output name=version::$VERSION"
        # Steps to extract the last release notes from CHANGES:
        #   1. Remove the first three lines
        #   2. Stop at the next heading level
        #   3. Remove the last line
        #   4. Deindent the bullet points to avoid a markdown code block
        tail -n +3 CHANGES | sed '/^##/q' |
        sed '$ d' | awk '{$1=$1};1' > CHANGES.txt

    - name: Create a release
      run: |
        TAG=${{ steps.tagName.outputs.version }}
        gh release create ${TAG} --title "${TAG}" --notes-file "CHANGES.txt" --draft 'target/release/cbindgen#cbindgen-ubuntu20.04'
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}