name: CI

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

env:
  CARGO_TERM_COLOR: always
  RUSTFLAGS: "-Dwarnings"

jobs:
  # ── Stage 1: Compile-time checks ────────────────────────────────────
  fmt:
    name: Formatting
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt
      - run: cargo fmt --all -- --check

  clippy:
    name: Lint (clippy)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy
      - uses: Swatinem/rust-cache@v2
      - run: cargo clippy --workspace --all-targets

  compile:
    name: Compile workspace
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: Build all crates
        run: cargo build --workspace
      - name: Build in release mode
        run: cargo build --workspace --release

  compile-wasm:
    name: Compile WASM target
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        with:
          targets: wasm32-unknown-unknown
      - uses: Swatinem/rust-cache@v2
      - name: Check crypto crate compiles for WASM
        run: cargo check -p salvium-crypto --target wasm32-unknown-unknown

  # ── Stage 2: Unit tests (per-crate, parallel) ───────────────────────
  test-types:
    name: "Test: types + consensus rules"
    needs: [compile]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: salvium-types
        run: cargo test -p salvium-types -- --nocapture
      - name: salvium-consensus
        run: cargo test -p salvium-consensus -- --nocapture

  test-crypto:
    name: "Test: crypto verification"
    needs: [compile]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: salvium-crypto (unit)
        run: cargo test -p salvium-crypto --lib -- --nocapture
      - name: salvium-crypto (integration)
        run: cargo test -p salvium-crypto --test '*' -- --nocapture

  test-wallet:
    name: "Test: wallet + transactions"
    needs: [compile]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: salvium-wallet
        run: cargo test -p salvium-wallet --lib -- --nocapture
      - name: salvium-tx
        run: cargo test -p salvium-tx -- --nocapture

  test-infra:
    name: "Test: miner + multisig + RPC"
    needs: [compile]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: salvium-miner
        run: cargo test -p salvium-miner -- --nocapture
      - name: salvium-multisig
        run: cargo test -p salvium-multisig -- --nocapture
      - name: salvium-rpc
        run: cargo test -p salvium-rpc -- --nocapture

  # ── Stage 3: Doc tests + documentation build ────────────────────────
  docs:
    name: Documentation
    needs: [compile]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: Doc tests
        run: cargo test --workspace --doc
      - name: Build docs (check for broken links)
        run: cargo doc --workspace --no-deps
        env:
          RUSTDOCFLAGS: "-Dwarnings"

  # ── Gate: all checks must pass ──────────────────────────────────────
  ci-pass:
    name: CI passed
    if: always()
    needs:
      - fmt
      - clippy
      - compile
      - compile-wasm
      - test-types
      - test-crypto
      - test-wallet
      - test-infra
      - docs
    runs-on: ubuntu-latest
    steps:
      - name: Check all jobs passed
        run: |
          if [[ "${{ contains(needs.*.result, 'failure') }}" == "true" ]]; then
            echo "One or more jobs failed"
            exit 1
          fi
          if [[ "${{ contains(needs.*.result, 'cancelled') }}" == "true" ]]; then
            echo "One or more jobs were cancelled"
            exit 1
          fi
          echo "All CI checks passed"