name: wai-web wasm32

# The browser sink (wai/wai-web) is the same Rust as the native reference,
# compiled to wasm32-unknown-unknown. This job builds it and runs, under node:
#
#   - demo/verify_int_synth_wasm.mjs against the committed conformance corpus
#     wai/neural-conformance/ (not the demo's staged copies): the wasm32
#     int_synth decode must hash to the corpus's frozen native hashes;
#   - demo/verify_menu.mjs: every capability the browser sink advertises is
#     registered in wai/registry/capabilities.json as a payload or companion
#     capability, none is a candidate (SPEC §5), and the wasm build's own
#     registry agrees with the export on every candidate;
#   - demo/verify_pack.mjs: the browser writers `pack` and `packMulti` refuse
#     every candidate the export lists, in every place an envelope can name one,
#     and a manifest that names a member twice in one object;
#   - a byte comparison of the demo's staged int_synth copies with the corpus;
#   - the crate's wasm_tests under wasm-bindgen-test-runner, and its native unit
#     tests on the host.
#
# The full-scale int_hyper wasm decode needs vectors regenerated from a
# pretrained model; wai-sota-vectors.yml runs it after regenerating them.

# One run per branch at a time. A push supersedes the run before it.
#
# There is one `macos` runner and it is the dev Mac, so every macOS job in this
# repo queues on it. With no concurrency group, a session pushing four versions
# of a branch queued four complete sets of runs and every one of them had to
# drain: on 2026-10-05 a PR's 21 contexts settled none in 70 minutes behind a
# backlog of 25 runs, and the queue grew faster than it cleared. Only the newest
# commit's verdict is wanted, so the older runs are cancelled.
#
# Verified on this forge (Forgejo 16.0.5) in `ci-test` before being added here:
# the key parses, and a newer push moves an older run to `cancelled` even while
# it is still queued, which is the case that matters.
#
# `cancel-in-progress: true` also applies to `main`. That is deliberate and
# safe here: main advances by merge commits whose tree contains the commits
# before them, so the newer run covers the older one's changes.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

on:
  push:
    branches: [main]
    paths:
      - 'wai/wai-web/**'
      - 'wai/wai-rs/**'
      - 'wai/wai-quantum/**'
      - 'wai/neural-conformance/**'
      - 'wai/registry/**'
      - '.github/workflows/wai-web-wasm.yml'
  pull_request:
    paths:
      - 'wai/wai-web/**'
      - 'wai/wai-rs/**'
      - 'wai/wai-quantum/**'
      - 'wai/neural-conformance/**'
      - 'wai/registry/**'
      - '.github/workflows/wai-web-wasm.yml'

jobs:
  wasm32:
    name: wai-web wasm32 build · corpus, menu and writers
    runs-on: linux
    timeout-minutes: 45
    steps:
      - uses: actions/checkout@v5
      # The docker runner image ships no Rust.
      - name: Install Rust 1.98.0 with the wasm32 target
        shell: bash
        run: |
          export PATH="$HOME/.cargo/bin:$PATH"
          command -v rustup >/dev/null 2>&1 || \
            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain 1.98.0
          rustup toolchain install 1.98.0 --profile minimal
          rustup default 1.98.0
          rustup target add wasm32-unknown-unknown
          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
      # Pinned to the wasm-bindgen version in wai-web/Cargo.lock: the CLI and the
      # crate must match exactly.
      - name: wasm-bindgen CLI 0.2.127
        shell: bash
        run: cargo install --locked wasm-bindgen-cli --version 0.2.127
      - uses: actions/setup-node@v4
        with:
          node-version: '22'
      - name: Build wai-web for wasm32 (node bindings)
        shell: bash
        working-directory: wai/wai-web
        run: |
          set -euo pipefail
          cargo build --locked --release --target wasm32-unknown-unknown
          wasm-bindgen --target nodejs --out-dir demo/pkg-node --out-name wai_web \
            target/wasm32-unknown-unknown/release/wai_web.wasm
      # The JS surface itself (pick, companionsOf, verifyPin, rendition() and
      # companion() refusing what is never presented or does not match its digest,
      # the held-sets conversion, and the WAI2 parse at 32-bit usize) runs only on
      # wasm32 (`mod wasm_tests`). wasm-bindgen-test-runner, installed above at the
      # version Cargo.lock pins, runs it under Node. The count check turns a test
      # that stopped being compiled into a failure instead of a silent "0 passed".
      - name: wai-web JS surface (wasm32 tests under Node)
        shell: bash
        working-directory: wai/wai-web
        run: |
          set -euo pipefail
          CARGO_TARGET_WASM32_UNKNOWN_UNKNOWN_RUNNER=wasm-bindgen-test-runner \
            cargo test --locked --target wasm32-unknown-unknown 2>&1 | tee "$RUNNER_TEMP/wai-web-wasm.log"
          grep -q "test result: ok. 4 passed; 0 failed" "$RUNNER_TEMP/wai-web-wasm.log"
      # The crate's native unit tests, run on the host: the pure-Rust halves of the
      # bindings, which wasm_tests does not run. They decode the committed integer
      # payloads to their sidecars' SHA-256 (int_payload::tests) and check that the
      # writers `pack` and `packMulti` refuse a payload that is not the format SPEC §5
      # pins its integer capability to, and a manifest that names a member twice (tests). The count check turns a test that
      # stopped being compiled into a failure instead of a silent "0 passed".
      - name: wai-web native unit tests
        shell: bash
        working-directory: wai/wai-web
        run: |
          set -euo pipefail
          cargo test --locked --lib 2>&1 | tee "$RUNNER_TEMP/wai-web-native.log"
          grep -q "test result: ok. 9 passed; 0 failed" "$RUNNER_TEMP/wai-web-native.log"
      - name: wasm32 int_synth decode equals the frozen native corpus
        shell: bash
        working-directory: wai/wai-web
        run: node demo/verify_int_synth_wasm.mjs ./pkg-node/wai_web.js ../neural-conformance
      # decodeWiv1, decodeWih1, decodeWia1 and decodeWis1 on the committed integer
      # payloads give the SHA-256 their sidecars state, and a JSON form is refused.
      - name: wasm32 integer payload decode equals the native sidecars
        shell: bash
        working-directory: wai/wai-web
        run: node demo/verify_int_payload_wasm.mjs ./pkg-node/wai_web.js ../wai-rs/tests/vectors
      - name: The browser menu is registered and names no candidate
        shell: bash
        working-directory: wai/wai-web
        run: node demo/verify_menu.mjs ./pkg-node/wai_web.js ../registry/capabilities.json
      - name: The browser writers refuse every candidate
        shell: bash
        working-directory: wai/wai-web
        run: node demo/verify_pack.mjs ./pkg-node/wai_web.js ../registry/capabilities.json
      - name: The demo's staged int_synth vectors are byte copies of the corpus
        shell: bash
        working-directory: wai
        run: |
          set -euo pipefail
          cmp wai-web/demo/int_synth/expected_hashes.json neural-conformance/expected_hashes.json
          for n in gradient bloom facade photo; do
            for f in latent.bin int_synth.json; do
              cmp "wai-web/demo/int_synth/$n/$f" "neural-conformance/vectors/$n/$f"
            done
          done