# Build stage
FROM node:18-alpine AS builder

WORKDIR /app

# Copy package files first (better caching)
COPY package*.json ./
COPY yarn.lock* ./

# Install all dependencies (including dev for build)
# This layer will be cached unless package.json changes
RUN yarn install --frozen-lockfile && yarn cache clean

# Copy source code (separate from dependencies)
COPY tsconfig*.json ./
COPY eslint.config.mjs ./
COPY scripts ./scripts
COPY src ./src
COPY public ./public

# Build the application with minification
RUN yarn build:prod

# Clean dev dependencies
RUN yarn install --production --frozen-lockfile

# Production stage
FROM node:18-alpine AS production

# Install ffmpeg from Alpine packages (architecture-aware)
RUN apk update && apk add --no-cache ffmpeg

# Set ffmpeg paths
ENV FFMPEG_PATH=/usr/bin/ffmpeg
ENV FFPROBE_PATH=/usr/bin/ffprobe
ENV NODE_ENV=production

WORKDIR /app

# Copy built application and dependencies
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/public ./public
COPY --from=builder /app/package*.json ./

# Create necessary directories
RUN mkdir -p downloads database

# Create non-root user
RUN addgroup -g 1001 -S nodejs
RUN adduser -S quixotic -u 1001

# Change ownership of app directory
RUN chown -R quixotic:nodejs /app
USER quixotic

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD node -e "require('http').get('http://localhost:3000/health', (res) => { process.exit(res.statusCode === 200 ? 0 : 1) })"

# Start the application
CMD ["node", "dist/server.js"]