name: Weekly beta compile test

on:
  schedule:
    # New versions of rust release on Thursdays. We test on Mondays to get at least 3 days of warning before all our CI breaks again.
    # https://forge.rust-lang.org/release/process.html#release-day-thursday
    - cron:  '0 12 * * 1'
  workflow_dispatch:

env:
  CARGO_TERM_COLOR: always
  NIGHTLY_TOOLCHAIN: nightly

jobs:
  test:
    strategy:
      matrix:
        os: [windows-latest, ubuntu-latest, macos-latest]
    runs-on: ${{ matrix.os }}
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@beta
      - name: Install Linux dependencies
        uses: ./.github/actions/install-linux-deps
      - name: Build & run tests
        # See tools/ci/src/main.rs for the commands this runs
        run: cargo run -p ci -- test
        env:
          CARGO_INCREMENTAL: 0
          RUSTFLAGS: "-C debuginfo=0 -D warnings"

  lint:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@beta
        with:
          components: rustfmt, clippy
      - name: Install Linux dependencies
        uses: ./.github/actions/install-linux-deps
        with:
          wayland: true
          xkb: true
      - name: Run lints
        # See tools/ci/src/main.rs for the commands this runs
        run: cargo run -p ci -- lints

  check-compiles:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    needs: test
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@beta
      - name: Install Linux dependencies
        uses: ./.github/actions/install-linux-deps
      - name: Check compile test
        # See tools/ci/src/main.rs for the commands this runs
        run: cargo run -p ci -- compile

  check-doc:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@beta
      - name: Install Linux dependencies
        uses: ./.github/actions/install-linux-deps
        with:
          wayland: true
          xkb: true
      - name: Build and check docs
        # See tools/ci/src/main.rs for the commands this runs
        run: cargo run -p ci -- doc
        env:
          CARGO_INCREMENTAL: 0
          RUSTFLAGS: "-C debuginfo=0"

  open-issue:
    name: Warn that weekly CI fails
    runs-on: ubuntu-latest
    needs: [test, lint, check-compiles, check-doc]
    permissions:
      issues: write
    # Use always() so the job doesn't get canceled if any other jobs fail 
    if: ${{ always() && contains(needs.*.result, 'failure') }}
    steps:
      - name: Create issue
        run: |
          previous_issue_number=$(gh issue list \
            --search "$TITLE in:title" \
            --json number \
            --jq '.[0].number')
          if [[ -n $previous_issue_number ]]; then
            gh issue comment $previous_issue_number \
              --body "Weekly pipeline still fails: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}" 
          else
            gh issue create \
              --title "$TITLE" \
              --label "$LABELS" \
              --body "$BODY"
          fi
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: ${{ github.repository }}
          TITLE: Main branch fails to compile on Rust beta.
          LABELS: C-Bug,S-Needs-Triage
          BODY: | 
            ## Weekly CI run has failed.
            [The offending run.](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }})