# cimery — WASM/PWA build (Sprint 22, ADR-001 dual-target)
#
# Builds cimery-viewer as a WebAssembly application.
# wgpu supports WebGPU (Chromium MVP), winit supports browser events.
#
# Constraints:
#   - OCCT is NOT available for WASM (--features occt excluded)
#   - Target: wasm32-unknown-unknown
#   - Packager: wasm-bindgen-cli
#
# Build output: pkg/ directory → deploy to Cloudflare Pages (cimery-web.pages.dev)

name: WASM

on:
  push:
    branches: [main]
    paths:
      - 'crates/viewer/**'
      - 'crates/kernel/**'
      - 'crates/ir/**'
      - 'crates/core/**'
      - '.github/workflows/wasm.yml'
  workflow_dispatch:   # manual trigger

env:
  CARGO_TERM_COLOR: always

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

      - uses: dtolnay/rust-toolchain@stable
        with:
          targets: wasm32-unknown-unknown

      - uses: Swatinem/rust-cache@v2

      - name: Install wasm-pack
        run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh

      - name: Build WASM (cimery-viewer)
        run: |
          wasm-pack build crates/viewer --target web --out-dir ../../pkg \
            --no-default-features --features wasm
        # Note: 'wasm' feature gates winit/wgpu for web target
        # OCCT is always excluded for WASM

      - name: Upload WASM artifacts
        uses: actions/upload-artifact@v4
        with:
          name: wasm-pkg
          path: pkg/
          retention-days: 7

  # ── Deploy to Cloudflare Pages (on main only) ──────────────────────────────
  deploy-pages:
    name: Deploy to Cloudflare Pages
    needs: build-wasm
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    environment:
      name: cimery-web
      url: https://cimery-web.pages.dev
    steps:
      - uses: actions/checkout@v4
      - uses: actions/download-artifact@v4
        with:
          name: wasm-pkg
          path: pkg/
      - name: Deploy to Cloudflare Pages
        uses: cloudflare/pages-action@v1
        with:
          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          projectName: cimery-web
          directory: pkg