server {
    listen 80;
    server_name localhost;
    
    # 파일 업로드 크기 제한 (50MB)
    client_max_body_size 50M;
    
    # 프론트엔드 파일 서빙
    location / {
        root /usr/share/nginx/html;
        index index.html;
        try_files $uri $uri/ /index.html;
    }
    
    # API 프록시 설정
    location /api/ {
        proxy_pass http://backend:9000/api/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # CORS 헤더 추가
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS";
        add_header Access-Control-Allow-Headers "Content-Type, Authorization";
        
        # OPTIONS 요청 처리
        if ($request_method = 'OPTIONS') {
            add_header Access-Control-Allow-Origin *;
            add_header Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS";
            add_header Access-Control-Allow-Headers "Content-Type, Authorization";
            add_header Content-Length 0;
            add_header Content-Type text/plain;
            return 204;
        }
    }
    
    # 업로드된 이미지 서빙 (백엔드 프록시)
    location /uploads/ {
        proxy_pass http://backend:9000/uploads/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # 캐시 설정 (이미지 파일용)
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
    
    # API 루트 경로 프록시
    location = /api {
        proxy_pass http://backend:9000/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}