# Use the official Bun image
FROM oven/bun:1 AS base
WORKDIR /usr/src/app

# Install dependencies into temp directories
# This will cache them and speed up future builds
FROM base AS install

# Install dependencies for both backend and frontend
COPY backend/package.json backend/bun.lockb /temp/dev/backend/
COPY frontend/package.json frontend/bun.lockb /temp/dev/frontend/

RUN cd /temp/dev/backend && bun install
RUN cd /temp/dev/frontend && bun install

# Install with --production (exclude devDependencies)
RUN mkdir -p /temp/prod/backend /temp/prod/frontend
COPY backend/package.json backend/bun.lockb /temp/prod/backend/
COPY frontend/package.json frontend/bun.lockb /temp/prod/frontend/

RUN cd /temp/prod/backend && bun install
RUN cd /temp/prod/frontend && bun install

# Build the frontend project
FROM install AS build-frontend
WORKDIR /usr/src/app/frontend
COPY --from=install /temp/dev/frontend/node_modules node_modules
COPY frontend/ .
RUN bun run build

# Prepare for final release
FROM base AS release
WORKDIR /usr/src/app

# Copy production dependencies
COPY --from=install /temp/prod/backend/node_modules backend/node_modules
COPY --from=install /temp/prod/frontend/node_modules frontend/node_modules

# Copy backend source code
COPY backend/ backend/

# Copy the built frontend assets into the backend public directory
COPY --from=build-frontend /usr/src/app/frontend/dist backend/public

# Set the entrypoint to run the backend server
USER bun
EXPOSE 3000/tcp
ENTRYPOINT [ "bun", "run", "backend/src/server.ts" ]