name: Rust CI

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

permissions:
  contents: write

jobs:
  build-and-test:
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2

    - name: Set up Rust
      uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: stable
        components: rustfmt, clippy
        override: true

    - name: Cache cargo registry
      uses: actions/cache@v2
      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@v2
      with:
        path: ~/.cargo/git
        key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
        restore-keys: |
          ${{ runner.os }}-cargo-index-
    - name: Cache cargo build
      id: cargo-build-cache
      uses: actions/cache@v2
      with:
        path: target
        key: ${{ runner.os }}-cargo-build-${{ hashFiles('./Cargo.lock') }}
        restore-keys: |
          ${{ runner.os }}-cargo-build-
    - name: Cache Nextest installation
      uses: actions/cache@v2
      with:
        path: ~/.cargo/bin/cargo-nextest
        key: ${{ runner.os }}-cargo-nextest

    - name: Install Nextest if not cached
      run: |
        if [ ! -f ~/.cargo/bin/cargo-nextest ]; then
          cargo install cargo-nextest
        fi

    - name: Check no default features
      run: cargo check --no-default-features

    - name: Check formatting
      run: cargo fmt -- --check

    - name: Lint with Clippy
      run: cargo clippy --workspace --all-features --bins --tests

    - name: Build
      if: steps.cargo-build-cache.outputs.cache-hit != 'true'
      run: cargo build --release --workspace --all-features --verbose

    - name: Run tests with Nextest
      run: cargo nextest run --all-features --workspace --verbose

    - name: Run docs
      run: cargo doc --workspace --all-features --no-deps --document-private-items --verbose


    - name: Cache mdbook installation
      uses: actions/cache@v2
      with:
        path: ~/.cargo/bin/mdbook
        key: ${{ runner.os }}-mdbook

    - name: Cache mdbook-mermaid installation
      uses: actions/cache@v2
      with:
        path: ~/.cargo/bin/mdbook
        key: ${{ runner.os }}-mdbook-mermaid

    - name: Install mdBook if not installed already
      run: |
        if [ ! -f ~/.cargo/bin/mdbook ]; then
          cargo install mdbook
        fi

    - name: Install mdBook-mermaid if not installed already
      run: |
        if [ ! -f ~/.cargo/bin/mdbook-mermaid ]; then
          cargo install mdbook-mermaid
        fi

    - name: Cache mdBook build
      id: mdbook-build-cache
      uses: actions/cache@v3
      with:
        path: ./docs/book/
        key: ${{ runner.os }}-mdbook-${{ hashFiles('./docs/**') }}
        restore-keys: |
          ${{ runner.os }}-mdbook-

    - name: Build the book
      if: steps.mdbook-build-cache.outputs.cache-hit != 'true'
      run: mdbook build ./docs/

    - name: Deploy book to GitHub Pages
      if: github.ref == 'refs/heads/main' # Deploy only when PR is merged to main
      uses: peaceiris/actions-gh-pages@v3
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        publish_dir: ./docs/book/