# syntax=docker/dockerfile:1

# 1) Compile C++ -> WASM. CMake POST_BUILD copies cpu_wasm.{js,wasm}

# into web/src/wasm/generated/. WASM is arch-neutral, so build native.

FROM --platform=$BUILDPLATFORM emscripten/emsdk:latest AS wasm

WORKDIR /src

COPY . .

RUN mkdir -p wasm_build \

&& cd wasm_build \

&& emcmake cmake .. -DCMAKE_BUILD_TYPE=Release \

&& make -j"$(nproc)"

# 2) Build the Vite/React front-end (needs the generated glue from stage 1).

FROM --platform=$BUILDPLATFORM node:20-bookworm-slim AS web

WORKDIR /src

RUN npm install -g pnpm@9

COPY --from=wasm /src /src

WORKDIR /src/web

RUN pnpm install --frozen-lockfile && pnpm build

# 3) Serve the static dist. Runtime stage is the target arch (arm64).

FROM nginx:alpine AS runtime

COPY --from=web /src/web/dist /usr/share/nginx/html

COPY deploy/nginx.conf /etc/nginx/conf.d/default.conf

EXPOSE 80