# ── Build stage ──
FROM node:22-alpine AS builder

WORKDIR /app

# Build args needed by $env/static/public at build time
ARG PUBLIC_SUPABASE_URL
ARG PUBLIC_SUPABASE_ANON_KEY

# Copy package files first for better layer caching
COPY package*.json ./

# Install all dependencies (including dev) needed for the build
RUN npm ci

# Copy source files
COPY . .

# Build the SvelteKit application
RUN npm run build

# ── Production dependencies stage ──
FROM node:22-alpine AS deps

WORKDIR /app

COPY package*.json ./

# Install only production dependencies
RUN npm ci --omit=dev

# ── Runtime stage ──
FROM node:22-alpine

WORKDIR /app

# Copy built application and production deps
COPY --from=builder /app/build build/
COPY --from=deps /app/node_modules node_modules/
COPY package.json .

# Expose port
EXPOSE 3000

# Set environment defaults
ENV NODE_ENV=production
ENV PORT=3000
ENV HOST=0.0.0.0
# SvelteKit node adapter needs ORIGIN for CSRF protection
# Override at runtime via docker-compose or -e flag
ENV ORIGIN=http://localhost:3000
# Allow file uploads up to 10 MB
ENV BODY_SIZE_LIMIT=10485760

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/health || exit 1

# Run the application
CMD ["node", "build"]