name: Windows MSVC

on:
  push:
    branches:
      - windows
      - "pull-request/[0-9]+"
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  # sccache cannot cache incremental Rust compilations, and rust-cache removes
  # incremental artifacts before saving the target directory.
  CARGO_INCREMENTAL: "0"

jobs:
  pr_metadata:
    name: Resolve PR metadata
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: read
    outputs:
      should_run: ${{ github.ref == 'refs/heads/windows' || steps.gate.outputs.should_run == 'true' }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1

      - id: gate
        if: github.ref != 'refs/heads/windows'
        uses: ./.github/actions/pr-gate
        with:
          required_label: test:windows

  pr-check:
    name: PR lint and test (${{ matrix.arch }})
    needs: pr_metadata
    if: >-
      needs.pr_metadata.outputs.should_run == 'true' &&
      github.ref != 'refs/heads/windows' &&
      github.event_name != 'workflow_dispatch'
    strategy:
      fail-fast: false
      matrix:
        include:
          - arch: x64
            runner: windows-2025
            rust_target: x86_64-pc-windows-msvc
          - arch: arm64
            runner: windows-11-arm
            rust_target: aarch64-pc-windows-msvc
    runs-on: ${{ matrix.runner }}
    env:
      READ_ONLY_GITHUB_TOKEN: ${{ github.token }}
      SCCACHE_GHA_ENABLED: "true"
      SCCACHE_GHA_VERSION: windows-msvc-${{ matrix.arch }}
      SCCACHE_CLIENT_SIDE: "1"
      SCCACHE_BASEDIRS: ${{ github.workspace }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
      - uses: jdx/mise-action@e6a8b3978addb5a52f2b4cd9d91eafa7f0ab959d # v4.2.0
        with:
          install: false
          experimental: true
      - name: Configure GHA sccache backend
        uses: mozilla-actions/sccache-action@9e7fa8a12102821edf02ca5dbea1acd0f89a2696 # v0.0.10
      - name: Isolate Rust toolchains
        # rust-cache hashes every installed toolchain, including unused runner defaults.
        run: '"RUSTUP_HOME=$env:RUNNER_TEMP/openshell-rustup" >> $env:GITHUB_ENV'
      - name: Install Rust toolchain
        # GitHub-hosted runners include rustup. With no toolchain argument,
        # rustup installs the checked-in rust-toolchain.toml configuration:
        # https://github.com/dtolnay/rust-toolchain/issues/133#issuecomment-2610825530
        run: |
          rustup set profile minimal
          rustup toolchain install
          rustup component add clippy
          rustup target add ${{ matrix.rust_target }}
      - name: Install cargo-nextest
        run: mise install --locked github:nextest-rs/nextest
      - name: Cache Rust target and registry
        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
        env:
          # Keep rust-cache's cargo metadata calls independent of the compiler
          # wrapper; build steps still inherit sccache from the job.
          RUSTC_WRAPPER: ""
        with:
          shared-key: windows-msvc-${{ matrix.arch }}
          cache-targets: "true"
          cache-on-failure: "true"
          cache-bin: "false"
      - name: Lint Windows-supported crates
        run: mise run --skip-tools windows:lint:${{ matrix.arch }}
      - name: Test
        run: mise run --skip-tools windows:test:${{ matrix.arch }}
      - name: sccache stats
        if: always()
        run: sccache --show-stats

  cache-seed:
    name: Seed cache (${{ matrix.arch }})
    # Keep release-branch Windows validation advisory while the lane matures.
    continue-on-error: true
    needs: pr_metadata
    if: >-
      needs.pr_metadata.outputs.should_run == 'true' &&
      github.ref == 'refs/heads/windows'
    strategy:
      fail-fast: false
      matrix:
        include:
          - arch: x64
            runner: windows-2025
            rust_target: x86_64-pc-windows-msvc
          - arch: arm64
            runner: windows-11-arm
            rust_target: aarch64-pc-windows-msvc
    runs-on: ${{ matrix.runner }}
    env:
      READ_ONLY_GITHUB_TOKEN: ${{ github.token }}
      SCCACHE_GHA_ENABLED: "true"
      SCCACHE_GHA_VERSION: windows-msvc-${{ matrix.arch }}
      SCCACHE_CLIENT_SIDE: "1"
      SCCACHE_BASEDIRS: ${{ github.workspace }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
      - uses: jdx/mise-action@e6a8b3978addb5a52f2b4cd9d91eafa7f0ab959d # v4.2.0
        with:
          install: false
          experimental: true
      - name: Configure GHA sccache backend
        uses: mozilla-actions/sccache-action@9e7fa8a12102821edf02ca5dbea1acd0f89a2696 # v0.0.10
      - name: Isolate Rust toolchains
        run: '"RUSTUP_HOME=$env:RUNNER_TEMP/openshell-rustup" >> $env:GITHUB_ENV'
      - name: Install Rust toolchain
        run: |
          rustup set profile minimal
          rustup toolchain install
          rustup component add clippy
          rustup target add ${{ matrix.rust_target }}
      - name: Install cargo-nextest
        run: mise install --locked github:nextest-rs/nextest
      - name: Cache Rust target and registry
        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
        env:
          RUSTC_WRAPPER: ""
        with:
          shared-key: windows-msvc-${{ matrix.arch }}
          cache-targets: "true"
          cache-on-failure: "true"
          cache-bin: "false"
      - name: Lint Windows-supported crates
        # Keep the seed workload identical to the pull-request workload so the
        # windows-branch cache reflects the same lint and test commands.
        run: mise run --skip-tools windows:lint:${{ matrix.arch }}
      - name: Test
        run: mise run --skip-tools windows:test:${{ matrix.arch }}
      - name: sccache stats
        if: always()
        run: sccache --show-stats

  build:
    name: Build binaries (${{ matrix.arch }})
    continue-on-error: true
    needs: cache-seed
    strategy:
      fail-fast: false
      matrix:
        include:
          - arch: x64
            runner: windows-2025
            rust_target: x86_64-pc-windows-msvc
          - arch: arm64
            runner: windows-11-arm
            rust_target: aarch64-pc-windows-msvc
    runs-on: ${{ matrix.runner }}
    env:
      READ_ONLY_GITHUB_TOKEN: ${{ github.token }}
      SCCACHE_GHA_ENABLED: "true"
      SCCACHE_GHA_VERSION: windows-msvc-${{ matrix.arch }}
      SCCACHE_CLIENT_SIDE: "1"
      SCCACHE_BASEDIRS: ${{ github.workspace }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
      - uses: jdx/mise-action@e6a8b3978addb5a52f2b4cd9d91eafa7f0ab959d # v4.2.0
        with:
          install: false
          experimental: true
      - name: Configure GHA sccache backend
        uses: mozilla-actions/sccache-action@9e7fa8a12102821edf02ca5dbea1acd0f89a2696 # v0.0.10
      - name: Isolate Rust toolchains
        run: '"RUSTUP_HOME=$env:RUNNER_TEMP/openshell-rustup" >> $env:GITHUB_ENV'
      - name: Install Rust toolchain
        run: |
          rustup set profile minimal
          rustup toolchain install
          rustup target add ${{ matrix.rust_target }}
      - name: Cache Rust target and registry
        uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
        env:
          RUSTC_WRAPPER: ""
        with:
          shared-key: windows-msvc-${{ matrix.arch }}
          cache-targets: "true"
          cache-on-failure: "true"
          cache-bin: "false"
      - name: Build release binaries
        run: mise run --skip-tools windows:build:${{ matrix.arch }}
      - name: sccache stats
        if: always()
        run: sccache --show-stats