events {
    worker_connections 1024;
}

http {
    upstream frontend {
        server frontend:3000;
    }

    upstream task-scheduler {
        server task-scheduler:4000;
    }

    upstream onnx-service {
        server onnx-service:5001;
    }

    upstream bie-service {
        server bie-service:5002;
    }

    upstream nef-service {
        server nef-service:5003;
    }

    server {
        listen 80;
        server_name localhost;

        # 文件上傳大小限制
        client_max_body_size 500M;

        # 超時設置
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;

        # 前端路由
        location / {
            proxy_pass http://frontend;
            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;
        }

        # 後端API路由
        location /api {
            proxy_pass http://task-scheduler;
            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;
        }

        # 直接訪問微服務（用於調試）
        location /onnx/ {
            proxy_pass http://onnx-service/;
            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;
        }

        location /bie/ {
            proxy_pass http://bie-service/;
            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;
        }

        location /nef/ {
            proxy_pass http://nef-service/;
            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;
        }

        # 靜態文件緩存
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
            proxy_pass http://frontend;
            expires 1y;
            add_header Cache-Control "public, immutable";
        }
    }
}