# ==========================================
# Chat Switchboard Unified Dockerfile
# Option B: Multi-stage build
# ==========================================

# Stage 1: Backend build
FROM golang:1.22-bookworm AS backend

WORKDIR /app

COPY server/go.mod ./
COPY server/go.sum ./
RUN go mod download

COPY server/ .
RUN CGO_ENABLED=1 go build -o /backend chat-switchboard-api

# Stage 2: Frontend build
FROM alpine:3.19 AS frontend

WORKDIR /app

RUN apk add --no-cache bash coreutils

COPY build.sh ./
COPY src ./src

RUN chmod +x build.sh && ./build.sh

# Stage 3: Production
FROM nginx:alpine AS production

# Copy backend binary
COPY --from=backend /backend /usr/local/bin/

# Copy built frontend files
COPY --from=frontend /app/standalone /usr/share/nginx/html

# Copy custom nginx config for reverse proxy
COPY nginx.conf /etc/nginx/conf.d/default.conf

# Create startup script
RUN echo '#!/bin/sh\n\
mkdir -p /app/data\n\
/usr/local/bin/backend serve &\n\
nginx -g "daemon off;"\n' > /start.sh && chmod +x /start.sh

EXPOSE 80

CMD ["/start.sh"]