name: XTasks

on:
  pull_request:
    paths:
      - "xtask"
      - "Cargo.toml"
      - "Cargo.lock"
      - ".cargo"
      - "core/tabs"
      - "docs"
  push:
    paths:
      - "xtask"
      - "Cargo.toml"
      - "Cargo.lock"
      - ".cargo"
      - "core/tabs"
      - "docs"

env:
  CARGO_TERM_COLOR: always

jobs:
  docgen:
    name: DocGen
    runs-on: ubuntu-latest

    steps:
      - name: Checkout sources
        uses: actions/checkout@v4

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

      - name: Cache Cargo registry
        uses: actions/cache@v4
        with:
          path: ~/.cargo/registry
          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: ${{ runner.os }}-cargo-registry-

      - name: Cache Cargo index
        uses: actions/cache@v4
        with:
          path: ~/.cargo/git
          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: ${{ runner.os }}-cargo-index-

      - name: Run cargo xtask docgen
        run: cargo xtask docgen

      - name: Check uncommitted documentation changes
        run: |
          git diff
          git diff-files --quiet \
            || (echo "Run 'cargo xtask docgen' and push the changes" \
            && exit 1)
