# Build/version info. APP_VERSION comes from the committed VERSION file (always correct,
# even for a plain `docker compose build`); GIT_SHA/BUILD_DATE are best-effort build-args
# the deploy scripts pass. An explicit APP_VERSION build-arg still overrides the file.
ARG APP_VERSION=
ARG GIT_SHA=unknown
ARG BUILD_DATE=

# Stage 1: build the frontend SPA
FROM node:20-alpine AS frontend
ARG APP_VERSION
ARG GIT_SHA
ARG BUILD_DATE
WORKDIR /fe
COPY frontend/package.json ./
RUN npm install
COPY frontend/ ./
COPY VERSION ./.version
# Vite inlines VITE_*-prefixed env at build time; version falls back to the VERSION file.
RUN VITE_APP_VERSION="${APP_VERSION:-$(cat ./.version)}" \
    VITE_GIT_SHA="$GIT_SHA" \
    VITE_BUILD_DATE="$BUILD_DATE" \
    npm run build

# Stage 2: backend runtime, serving the built SPA
FROM python:3.12-slim
ARG GIT_SHA
ARG BUILD_DATE
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1 \
    GIT_SHA=$GIT_SHA \
    BUILD_DATE=$BUILD_DATE

WORKDIR /app

COPY backend/requirements.txt .
RUN pip install --upgrade pip && pip install -r requirements.txt

COPY backend/ .
# Read at runtime by config.py as the app_version (a committed single source of truth).
COPY VERSION ./VERSION
COPY --from=frontend /fe/dist ./app/static_spa

RUN adduser --disabled-password --gecos "" appuser && chown -R appuser /app
USER appuser

EXPOSE 8000
CMD ["sh", "entrypoint.sh"]