# Stage 1: Base
FROM node:22-alpine AS base

# Timezone (Node 22 respects TZ without needing tzdata installed)
ENV TZ=Asia/Tehran

# Set workdir for clarity
WORKDIR /app

# Stage 2: Dependencies
FROM base AS deps
WORKDIR /temp-deps
COPY package*.json ./
RUN npm config set registry https://registry.npmjs.org/ && npm ci

# Stage 3: Production dependencies
FROM base AS prod-deps
WORKDIR /temp-prod-deps
COPY package*.json ./
RUN npm config set registry https://registry.npmjs.org/ && npm ci --omit=dev --ignore-scripts

# Stage 4: Build
FROM base AS builder
WORKDIR /build
COPY package*.json ./
COPY --from=deps /temp-deps/node_modules ./node_modules
COPY . ./
RUN npm run build

# Stage 5: Runner
FROM base AS runner
RUN addgroup -S appgroup && adduser -S appuser -G appgroup
WORKDIR /app

COPY --from=builder --chown=appuser:appgroup /build/ ./
COPY --from=prod-deps --chown=appuser:appgroup /temp-prod-deps/node_modules ./node_modules

USER appuser
ENV NODE_ENV=production
EXPOSE 4000

CMD ["npm", "start"]