# ===== Multi-stage Dockerfile =====
# Development: source bind-mounted, run via tsx watch (hot reload).
# Production:  build to dist/, run compiled JS.

# ---------- base ----------
FROM node:20-alpine AS base
WORKDIR /app
COPY package.json package-lock.json* ./

# ---------- development ----------
FROM base AS development
RUN npm install
COPY tsconfig.json ./
# Source is bind-mounted at runtime (see docker-compose.dev.yml), so we do NOT
# COPY src here — edits on the host are picked up by tsx watch immediately.
CMD ["npm", "run", "dev"]

# ---------- dependencies (production) ----------
FROM base AS deps
RUN npm install --omit=dev

# ---------- build ----------
FROM base AS build
RUN npm install
COPY tsconfig.json ./
COPY src ./src
RUN npm run build

# ---------- production ----------
FROM node:20-alpine AS production
WORKDIR /app
ENV NODE_ENV=production
COPY package.json ./
COPY --from=deps /app/node_modules ./node_modules
COPY --from=build /app/dist ./dist
EXPOSE 8080
CMD ["node", "dist/index.js"]