# continuous integration workflow based on old travis-ci configuration

name: Integration Tests
on:
  push:
    branches:
      - master
  pull_request:
jobs:
  build-tmux:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        tmux_version:
          - '3.6a'
          - '3.6'
          - '3.5a'
          - '3.5'
          - '3.4'
          - '3.3a'
          - '3.3'
          - '3.2a'
          - '3.2'
          - '3.1c'
          - '3.1b'
          - '3.1a'
          - '3.1'
          - '3.0a'
          - '3.0'
          - '2.9a'
          - '2.9'
          - '2.8'
          - '2.7'
          - '2.6'
          - '2.5'
          - '2.4'
          - '2.3'
          - '2.2'
          - '2.1'
          - '2.0'
          - '1.9'
          - '1.8'
          - '1.7'
          - '1.6'
          - '1.5'

    steps:
    - name: "Cache tmux ${{ matrix.tmux_version }} binary"
      id: cache-tmux
      uses: actions/cache@v4
      with:
        # Only the binary is cached; libevent/libncurses are dynamically linked
        # from system packages (apt-installed on every job) so they are not
        # part of the build prefix and do not need to be cached.
        path: ~/.local/bin/tmux
        key: tmux-bin-${{ runner.os }}-${{ matrix.tmux_version }}

    - name: "Build and install tmux ${{ matrix.tmux_version }}"
      if: steps.cache-tmux.outputs.cache-hit != 'true'
      run: |
        # build dependencies
        sudo apt-get update -qq
        # note: pkg-config must be installed before dep libs or the build fails
        sudo apt-get install -y -qq pkg-config build-essential autoconf automake bison git
        sudo apt-get install -y libevent-dev libncurses-dev

        # build and install tmux to ~/.local so the binary can be cached
        git clone https://github.com/tmux/tmux.git tmux
        cd tmux
        git checkout ${{ matrix.tmux_version }}
        bash autogen.sh
        bash ./configure --prefix="$HOME/.local" && make && make install
        cd ..
        ~/.local/bin/tmux -V

  test:
    needs: build-tmux
    runs-on: ubuntu-latest
    permissions:
      contents: read
      checks: write
    strategy:
      fail-fast: false
      matrix:
        ruby_version:
          - '4.0.1'
          - '3.4.8'
          - '3.3.10'
          - '3.2.10'
        tmux_version:
          - '3.6a'
          - '3.6'
          - '3.5a'
          - '3.5'
          - '3.4'
          - '3.3a'
          - '3.3'
          - '3.2a'
          - '3.2'
          - '3.1c'
          - '3.1b'
          - '3.1a'
          - '3.1'
          - '3.0a'
          - '3.0'
          - '2.9a'
          - '2.9'
          - '2.8'
          - '2.7'
          - '2.6'
          - '2.5'
          - '2.4'
          - '2.3'
          - '2.2'
          - '2.1'
          - '2.0'
          - '1.9'
          - '1.8'
          - '1.7'
          - '1.6'
          - '1.5'

    steps:
    - uses: actions/checkout@v6

    - uses: ruby/setup-ruby@v1
      with:
        ruby-version: ${{ matrix.ruby_version }}
        bundler-cache: true

    - name: "Install tmux ${{ matrix.tmux_version }} runtime dependencies"
      run: |
        sudo apt-get update -qq
        sudo apt-get install -y libevent-dev libncurses-dev

    - name: "Restore tmux ${{ matrix.tmux_version }} binary from cache"
      uses: actions/cache@v4
      with:
        path: ~/.local/bin/tmux
        key: tmux-bin-${{ runner.os }}-${{ matrix.tmux_version }}
        fail-on-cache-miss: true

    - name: Add tmux to PATH
      run: echo "$HOME/.local/bin" >> $GITHUB_PATH

    - name: "Test ruby ${{ matrix.ruby_version }} tmux ${{ matrix.tmux_version }}"
      run: |
        tmux -V
        bundle exec rake test

    - name: Coveralls
      uses: coverallsapp/github-action@v2
      with:
        flag-name: run-${{ join(matrix.*, '-') }}
        parallel: true

  finish:
    needs: test
    runs-on: ubuntu-latest
    steps:
    - name: Coveralls Finished
      uses: coverallsapp/github-action@v2
      with:
        parallel-finished: true
        carryforward: "run-3.3.5-1.5,run-3.3.5-2.6,run-3.3.5-3.5a"