name: Deploy to GitHub Pages

on:
  push:
    branches:
      - main
  workflow_dispatch:

permissions:
  contents: read
  pages: write
  id-token: write

concurrency:
  group: "pages"
  cancel-in-progress: false

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Setup emsdk
        uses: mymindstorm/setup-emsdk@v14
        with:
          version: 5.0.4
          actions-cache-folder: 'emsdk-cache'

      # Builds the custom C kernels (wasm/dist/matmul.* + public/matmul/matmul_mt.*).
      # The libFLAME/BLIS modules (public/matmul/matmul_blis_*) are committed
      # vendored binaries — they link prebuilt libraries not available here — so
      # nothing outside this repo is needed to produce the full site.
      - name: Build custom wasm kernels
        run: bash wasm/build-wasm.sh

      - name: Build
        run: npm run build

      - name: Upload artifact
        uses: actions/upload-pages-artifact@v3
        with:
          path: ./dist

  deploy:
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Deploy to GitHub Pages
        id: deployment
        uses: actions/deploy-pages@v4