name: Lint

on:
  push:
    branches:
      - main
    paths-ignore:
      - "**.md"
      - "!.github/workflows/*.yml"

  pull_request:
    paths-ignore:
      - "**.md"
      - "!.github/workflows/*.yml"

env:
  RISC0_DEV_MODE: "1"
  CARGO_TERM_COLOR: always

permissions:
  contents: read
  pull-requests: read

jobs:
  # ── rustfmt ──────────────────────────────────────────────────────────────────
  fmt-rs:
    name: Rust formatting
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha || github.head_ref }}

      - name: Install nightly toolchain for rustfmt
        run: rustup install nightly --profile minimal --component rustfmt

      - name: Check Rust files are formatted
        run: cargo +nightly fmt --check

  # ── clippy ───────────────────────────────────────────────────────────────────
  lint:
    name: Clippy
    runs-on: ubuntu-latest
    timeout-minutes: 60
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.head.sha || github.head_ref }}

      - name: Checkout logos-execution-zone alongside lez-fuzzing
        uses: actions/checkout@v4
        with:
          repository: logos-blockchain/logos-execution-zone
          path: logos-execution-zone

      - name: Symlink logos-execution-zone to sibling directory
        run: ln -s "$GITHUB_WORKSPACE/logos-execution-zone" "$GITHUB_WORKSPACE/../logos-execution-zone"

      - name: Install logos-blockchain-circuits
        uses: ./logos-execution-zone/.github/actions/install-logos-blockchain-circuits
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Install stable toolchain with clippy
        uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy

      - name: Restore Rust cache
        uses: Swatinem/rust-cache@v2
        with:
          shared-key: lint-rust-cache
          save-if: ${{ github.ref == 'refs/heads/main' }}

      - name: Lint workspace
        env:
          RISC0_DEV_MODE: "1"
        run: cargo clippy --workspace --all-targets --all-features -- -D warnings