ci.yml

name: CI

on:
  push:
    branches: [main, "release/**"]
  pull_request:

permissions:
  contents: read

# Only the newest run per branch matters; cancel the rest.
concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: npm
      - run: npm ci
      - run: npm test
      - run: npm run build:all
      # A regression here means the inlined worker or wasm leaked into the
      # served bundle — see build/use-inline-variants.ts. The number is a leak
      # tripwire, not a size budget: a leak adds hundreds of KB (the wasm alone
      # is 272 KB), so the ceiling only has to sit clear of honest growth. It
      # was raised from 20 KB when segmented transfers took the chunk to 22 KB
      # on merit — that is what a threshold with no slack costs.
      - name: Served receive chunk stays small
        run: |
          shopt -s nullglob
          chunks=(dist/assets/receive-*.js)
          # Chunking is Rollup's call, so assert the shape before measuring it:
          # `stat` on a multi-file glob prints several lines and `test` then
          # fails with a syntax error instead of a useful message.
          if [ "${#chunks[@]}" -ne 1 ]; then
            echo "expected exactly one receive chunk, found ${#chunks[@]}: ${chunks[*]:-none}"
            exit 1
          fi
          bytes=$(stat -c%s "${chunks[0]}")
          echo "receive chunk: ${chunks[0]} — $bytes bytes"
          test "$bytes" -lt 40000

      # rootPwaHead() in build/root-pwa-head.ts already asserts this at build
      # time, but only against the HTML it rewrote. This checks the files on disk
      # exist where every page now points, which is the part that broke before:
      # /send/ and /receive/ asked for a manifest and an sw.js that were only
      # ever at the root, so neither page registered a service worker.
      - name: Every page's PWA references resolve to real files
        run: |
          test -f dist/manifest.webmanifest
          test -f dist/sw.js
          for page in index send/index receive/index; do
            dir=$(dirname "dist/$page.html")
            for ref in $(grep -oE '(href="[^"]*manifest\.webmanifest"|register\('"'"'[^'"'"']*sw\.js'"'"')' "dist/$page.html" \
                         | grep -oE '[^"'"'"'(]*(manifest\.webmanifest|sw\.js)'); do
              target=$(realpath -m "$dir/$ref")
              if [ ! -f "$target" ]; then
                echo "dist/$page.html references $ref -> $target, which does not exist"
                exit 1
              fi
              echo "dist/$page.html: $ref -> ${target#"$PWD/"}"
            done
          done