FROM node:20-alpine AS base

FROM base as dev_dep
RUN mkdir -p /home/node/app/node_modules && chown -R node:node /home/node/app
WORKDIR /home/node/app

# --- dependencies ---
COPY --chown=node:node package*.json ./
COPY --chown=node:node backend/package*.json ./backend/
COPY --chown=node:node frontend/package*.json ./frontend/

USER node
RUN npm install --include=dev

FROM base as dep
RUN mkdir -p /home/node/app/node_modules && chown -R node:node /home/node/app
WORKDIR /home/node/app

# --- dependencies ---
COPY --chown=node:node package*.json ./
COPY --chown=node:node backend/package*.json ./backend/
COPY --chown=node:node frontend/package*.json ./frontend/

USER node
RUN npm install --omit=dev

#
# === BUILDER ===
#

FROM base as build
RUN mkdir -p /home/node/app/node_modules && chown -R node:node /home/node/app
WORKDIR /home/node/app

COPY --from=dev_dep /home/node/app/ ./

COPY --chown=node:node . .

# --- build frontend ---

RUN npm -w frontend run build

# --- build backend ---

RUN npx -w backend prisma generate
RUN npm -w backend run build

#
# === RUNNER ===
#

FROM base as run
WORKDIR /home/node/app
COPY --from=dep /home/node/app/ ./
COPY package*.json docker-start.sh ./

# --- prepare frontend ---

RUN mkdir -p frontend
COPY --from=build /home/node/app/frontend/dist ./frontend/

# --- prepare server ---

RUN mkdir -p backend
COPY --from=build /home/node/app/backend/package.json ./backend/
COPY --from=build /home/node/app/backend/prisma ./backend/prisma
COPY --from=build /home/node/app/backend/dist ./backend/dist

# --- finalize ---

RUN npx -w backend prisma generate

# set runtime env variables

ENV PORT 3000
ENV NODE_ENV production
ENV SERVE_FRONTEND /home/node/app/frontend

EXPOSE 3000
ENTRYPOINT [ "/bin/sh" ]
CMD [ "./docker-start.sh" ]