# =============================================================================
# TRADING PLATFORM - Nginx Configuration
# =============================================================================
# Copiar a: /etc/nginx/conf.d/trading.conf
# Servidor: 72.60.226.4
# =============================================================================

# Upstreams
upstream trading_frontend {
    server 127.0.0.1:3080;
    keepalive 32;
}

upstream trading_backend {
    server 127.0.0.1:3081;
    keepalive 32;
}

upstream trading_websocket {
    server 127.0.0.1:3082;
    keepalive 32;
}

# HTTP -> HTTPS Redirect
server {
    listen 80;
    server_name trading.isem.dev api.trading.isem.dev ws.trading.isem.dev;
    return 301 https://$server_name$request_uri;
}

# Frontend - trading.isem.dev
server {
    listen 443 ssl http2;
    server_name trading.isem.dev;

    # SSL
    ssl_certificate /etc/letsencrypt/live/isem.dev/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/isem.dev/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256;
    ssl_prefer_server_ciphers off;

    # Security Headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # Gzip
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;

    # Logging
    access_log /var/log/nginx/trading-frontend-access.log;
    error_log /var/log/nginx/trading-frontend-error.log;

    # Frontend
    location / {
        proxy_pass http://trading_frontend;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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;
        proxy_cache_bypass $http_upgrade;
    }

    # Static assets cache
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2)$ {
        proxy_pass http://trading_frontend;
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}

# Backend API - api.trading.isem.dev
server {
    listen 443 ssl http2;
    server_name api.trading.isem.dev;

    ssl_certificate /etc/letsencrypt/live/isem.dev/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/isem.dev/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;

    # Rate Limiting
    limit_req zone=api_limit burst=20 nodelay;
    limit_conn conn_limit 10;

    # Logging
    access_log /var/log/nginx/trading-api-access.log;
    error_log /var/log/nginx/trading-api-error.log;

    # Client body size (for file uploads)
    client_max_body_size 50M;

    location / {
        proxy_pass http://trading_backend;
        proxy_http_version 1.1;
        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;

        # Timeouts
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    location /health {
        proxy_pass http://trading_backend/health;
        access_log off;
    }
}

# WebSocket - ws.trading.isem.dev
server {
    listen 443 ssl http2;
    server_name ws.trading.isem.dev;

    ssl_certificate /etc/letsencrypt/live/isem.dev/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/isem.dev/privkey.pem;

    location / {
        proxy_pass http://trading_websocket;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_read_timeout 86400;
    }
}