# ==============================================================================
# Build stage
# ==============================================================================
FROM node:24-alpine AS builder

# Install git (required for GitHub-based npm dependencies)
RUN apk add --no-cache git

# Downgrade npm to avoid --min-release-age conflict with --before for git deps
RUN npm install -g npm@11.4.0

WORKDIR /app
COPY package*.json ./

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

# Copy source code and bundle
COPY . .
RUN node --run bundle


# ==============================================================================
# Runtime image
# ==============================================================================
FROM node:24-alpine

# Install git and ca-certificates (required by repomix for remote repository processing)
RUN apk add --no-cache git ca-certificates

# Downgrade npm to avoid --min-release-age conflict with --before for git deps (used by compose dev command)
RUN npm install -g npm@11.4.0

WORKDIR /app

# Copy bundled server and WASM files
COPY --from=builder /app/dist-bundled ./dist-bundled

# Copy external dependencies (cannot be bundled due to runtime requirements)
# - tinypool: spawns worker threads using file paths
COPY --from=builder /app/node_modules/tinypool ./node_modules/tinypool

# Copy warmup script for compile cache generation
COPY --from=builder /app/warmup.mjs ./warmup.mjs

# Set environment variables for bundled mode
# NODE_COMPILE_CACHE enables V8 compile cache to reduce cold start latency
ENV NODE_ENV=production \
    PORT=8080 \
    REPOMIX_WORKER_PATH=/app/dist-bundled/worker.mjs \
    REPOMIX_WASM_DIR=/app/dist-bundled/wasm \
    NODE_COMPILE_CACHE=/app/.compile-cache

# Generate compile cache at build time
# This pre-compiles all modules so cold starts use cached compiled code
RUN node warmup.mjs

# Expose port
EXPOSE 8080

# Start the bundled server
CMD ["node", "dist-bundled/server.mjs"]