name: CI

# Branch pushes are covered by the pull_request trigger. Listening to both for
# every branch ran the whole matrix twice per PR.
on:
  push:
    branches: [master]
    paths-ignore: ['website/**']
  pull_request:
    branches: ['**']

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1

jobs:
  lint:
    name: Lint
    timeout-minutes: 10
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

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

      - uses: Swatinem/rust-cache@v2

      - name: Run clippy
        run: cargo clippy --workspace --all-targets --all-features -- -D warnings

  format:
    name: Format Check
    timeout-minutes: 5
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt

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

  test:
    name: Test
    timeout-minutes: 20
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        rust: [stable]
    steps:
      - uses: actions/checkout@v4

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}

      - uses: Swatinem/rust-cache@v2

      - name: Run tests
        run: cargo test --verbose

  e2e:
    name: End-to-end (soulfind)
    # The CLI suite runs twice (own login + against a daemon), ~8 minutes per
    # pass, plus the library and protocol suites and a soulfind build.
    timeout-minutes: 30
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

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

      - uses: Swatinem/rust-cache@v2

      - name: Install SQLite runtime/dev libraries
        run: sudo apt-get update && sudo apt-get install -y libsqlite3-dev

      - name: Install D toolchain (LDC)
        uses: dlang-community/setup-dlang@v2
        with:
          compiler: ldc-latest

      - name: Build soulfind server
        run: |
          git clone --depth 1 https://github.com/soulfind-dev/soulfind.git soulfind
          dub build :server --root soulfind
          test -x soulfind/bin/soulfind
          echo "SOULFIND_BIN=$PWD/soulfind/bin/soulfind" >> "$GITHUB_ENV"

      - name: Run library e2e tests (required against soulfind)
        env:
          SOULSEEK_E2E_REQUIRED: "1"
        run: cargo test -p soulseek-rs-lib --test e2e -- --nocapture

      - name: Run CLI e2e tests (required against soulfind)
        env:
          SOULSEEK_E2E_REQUIRED: "1"
        run: cargo test -p soulseek-rs --test cli_e2e -- --nocapture

      # The window over a real session: keys in, a screen out, a peer on the
      # other end. Nothing else opens the TUI against a server.
      - name: Run TUI e2e tests (required against soulfind)
        env:
          SOULSEEK_E2E_REQUIRED: "1"
        run: cargo test -p soulseek-rs --test tui_e2e -- --nocapture

      # The control protocol as a third party meets it: the TCP transport, the
      # token, and the gate. None of it is reachable through the command
      # surface, so the CLI suite cannot cover it in either mode.
      - name: Run daemon protocol e2e tests (required against soulfind)
        env:
          SOULSEEK_E2E_REQUIRED: "1"
        run: cargo test -p soulseek-rs --test daemon_protocol_e2e -- --nocapture --test-threads=1

      # The same suite again, with every session served by a daemon instead of
      # the command's own login. Identical records and exit codes both ways is
      # what makes daemon mode a routing decision rather than a second
      # implementation to keep in step.
      - name: Run CLI e2e tests against a daemon
        env:
          SOULSEEK_E2E_REQUIRED: "1"
          SOULSEEK_E2E_MODE: daemon
        run: cargo test -p soulseek-rs --test cli_e2e -- --nocapture --test-threads=1

  # A mixed load of mock peers around one real client. Every ceiling this
  # project has hit only showed under simultaneous searches, downloads,
  # uploads and browses, and three of the four lost work silently, so the
  # gate is the functional dimensions at 100%, never the throughput number.
  stress:
    name: Stress (soulfind)
    timeout-minutes: 20
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

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

      - uses: Swatinem/rust-cache@v2

      - name: Install SQLite runtime/dev libraries
        run: sudo apt-get update && sudo apt-get install -y libsqlite3-dev

      - name: Install D toolchain (LDC)
        uses: dlang-community/setup-dlang@v2
        with:
          compiler: ldc-latest

      - name: Build soulfind server
        run: |
          git clone --depth 1 https://github.com/soulfind-dev/soulfind.git soulfind
          dub build :server --root soulfind
          test -x soulfind/bin/soulfind
          echo "SOULFIND_BIN=$PWD/soulfind/bin/soulfind" >> "$GITHUB_ENV"

      # An eighth of the local profile: soulfind on a four-core runner brings
      # about 150 mock logins online, and the point is lost work, not load.
      - name: Run the stress benchmark with the functional gate
        env:
          STRESS_REQUIRE_FUNCTIONAL: "1"
          STRESS_PEERS: "128"
          STRESS_SEARCHES: "32"
          STRESS_DOWNLOADS: "128"
          STRESS_LEECHERS: "64"
          STRESS_BROWSES: "32"
        run: |
          ulimit -n 20000
          cargo run --release -p soulseek-rs-lib --example stress