FROM node:18-alpine AS base

# Install dependencies only when needed
FROM base AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

# Copy package files
COPY package.json yarn.lock* ./

# Configure yarn and install dependencies
RUN yarn config set registry 'https://registry.npmmirror.com/' && \
    yarn install --frozen-lockfile

# Rebuild the source code only when needed
FROM base AS builder
RUN apk update && apk add --no-cache git
WORKDIR /app

# Copy node_modules from deps stage
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Set build-time environment variables
ENV NEXT_TELEMETRY_DISABLED 1
ENV NODE_ENV production

# Build the application
RUN yarn build

# Production image, copy all the files and run next
FROM base AS runner
WORKDIR /app

# Install proxychains for proxy support
RUN apk add --no-cache proxychains-ng

# Set runtime environment
ENV NODE_ENV production
ENV NEXT_TELEMETRY_DISABLED 1

# Environment variables (will be overridden at runtime)
ENV PROXY_URL=""
ENV OPENAI_API_KEY=""
ENV GOOGLE_API_KEY=""
ENV CODE=""
ENV ENABLE_MCP=""

# Create a non-root user
RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs

# Copy built application
COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Create and set up MCP directory
RUN mkdir -p /app/app/mcp && \
    chmod 777 /app/app/mcp
COPY --from=builder /app/app/mcp/mcp_config.default.json /app/app/mcp/mcp_config.json

# Switch to non-root user
USER nextjs

EXPOSE 3000

ENV PORT 3000
ENV HOSTNAME "0.0.0.0"

# Start the application
CMD if [ -n "$PROXY_URL" ]; then \
    protocol=$(echo $PROXY_URL | cut -d: -f1); \
    host=$(echo $PROXY_URL | cut -d/ -f3 | cut -d: -f1); \
    port=$(echo $PROXY_URL | cut -d: -f3); \
    conf=/tmp/proxychains.conf; \
    echo "strict_chain" > $conf; \
    echo "proxy_dns" >> $conf; \
    echo "remote_dns_subnet 224" >> $conf; \
    echo "tcp_read_time_out 15000" >> $conf; \
    echo "tcp_connect_time_out 8000" >> $conf; \
    echo "localnet 127.0.0.0/255.0.0.0" >> $conf; \
    echo "localnet ::1/128" >> $conf; \
    echo "[ProxyList]" >> $conf; \
    echo "$protocol $host $port" >> $conf; \
    proxychains -f $conf node server.js; \
    else \
    node server.js; \
    fi