# Stage 1: Install dependencies
FROM node:22-slim AS deps
RUN corepack enable && corepack prepare pnpm@latest --activate
WORKDIR /app
COPY package.json pnpm-workspace.yaml pnpm-lock.yaml ./
COPY frontend/package.json frontend/
COPY server/package.json server/
RUN pnpm install --frozen-lockfile

# Cache-bust arg — pass --build-arg CACHE_BUST=$(date +%s) to force rebuild
ARG CACHE_BUST=0

# Stage 2: Build frontend
FROM deps AS build-fe
ARG CACHE_BUST
COPY frontend/ frontend/
RUN pnpm --filter frontend build

# Stage 3: Build server
FROM deps AS build-be
ARG CACHE_BUST
COPY server/ server/
RUN pnpm --filter server build

# Stage 4: Production image
FROM node:22-slim AS production
RUN corepack enable && corepack prepare pnpm@latest --activate
WORKDIR /app

COPY package.json pnpm-workspace.yaml pnpm-lock.yaml ./
COPY server/package.json server/
RUN pnpm install --filter server --prod --frozen-lockfile

# Copy built server
COPY --from=build-be /app/server/dist server/dist

# Copy built frontend into server's public dir
COPY --from=build-fe /app/frontend/dist server/public

# Data volume for SQLite
RUN mkdir -p /app/server/data

# Non-root user
RUN groupadd --system botfights && useradd --system --gid botfights botfights \
    && chown -R botfights:botfights /app
USER botfights

VOLUME /app/server/data

ENV NODE_ENV=production
ENV PORT=9100
EXPOSE 9100

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD node -e "fetch('http://localhost:9100/api/health').then(r=>{if(!r.ok)process.exit(1)}).catch(()=>process.exit(1))"

CMD ["node", "--max-old-space-size=256", "server/dist/index.js"]