# Combined build for single-container deployment
# For production, use separate frontend/backend containers via docker-compose

# Build backend
FROM golang:1.22-alpine AS backend-builder

WORKDIR /app/backend

COPY backend/go.mod backend/go.sum* ./
RUN go mod download

COPY backend/ .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main .

# Build frontend
FROM node:20-alpine AS frontend-builder

WORKDIR /app/frontend

COPY frontend/package.json frontend/package-lock.json* ./
RUN npm ci || npm install

COPY frontend/ .
RUN npm run build

# Final stage with nginx to serve frontend and proxy to backend
FROM nginx:alpine

# Install supervisor to run multiple processes
RUN apk add --no-cache supervisor

# Copy backend binary
COPY --from=backend-builder /app/backend/main /app/backend/main

# Copy frontend build
COPY --from=frontend-builder /app/frontend/.next/standalone /app/frontend/
COPY --from=frontend-builder /app/frontend/.next/static /app/frontend/.next/static
COPY --from=frontend-builder /app/frontend/public /app/frontend/public

# Nginx config
RUN rm /etc/nginx/conf.d/default.conf
COPY <<'EOF' /etc/nginx/conf.d/default.conf
server {
    listen 8080;

    location /api {
        proxy_pass http://127.0.0.1:8081;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }

    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
    }
}
EOF

# Supervisor config
COPY <<'EOF' /etc/supervisord.conf
[supervisord]
nodaemon=true
logfile=/dev/null
logfile_maxbytes=0

[program:backend]
command=/app/backend/main
autostart=true
autorestart=true
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0

[program:frontend]
command=node /app/frontend/server.js
environment=PORT="3000",HOSTNAME="0.0.0.0",NODE_ENV="production"
autostart=true
autorestart=true
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0

[program:nginx]
command=nginx -g 'daemon off;'
autostart=true
autorestart=true
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
EOF

EXPOSE 8080

CMD ["supervisord", "-c", "/etc/supervisord.conf"]