# NGINX Configuration for Local Testing
# Simula o ambiente de produção para testes locais

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    
    # Log format
    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for" '
                    'rt=$request_time uct="$upstream_connect_time" '
                    'uht="$upstream_header_time" urt="$upstream_response_time"';
    
    access_log /var/log/nginx/access.log main;
    error_log /var/log/nginx/error.log;
    
    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    
    # Upstream configuration para load balancing
    upstream bcards_backend {
        least_conn;
        server bcards-server1:8080 max_fails=3 fail_timeout=30s;
        server bcards-server2:8080 max_fails=3 fail_timeout=30s;
        keepalive 32;
    }
    
    # Rate limiting
    limit_req_zone $binary_remote_addr zone=general:10m rate=10r/s;
    
    server {
        listen 80;
        server_name localhost;
        
        # Rate limiting
        limit_req zone=general burst=20 nodelay;
        
        # Health check do NGINX
        location = /nginx-health {
            access_log off;
            return 200 "nginx ok\n";
            add_header Content-Type text/plain;
        }
        
        # Backend health check
        location = /backend-health {
            access_log off;
            proxy_pass http://bcards_backend/health;
            proxy_connect_timeout 5s;
            proxy_read_timeout 5s;
        }
        
        # Main application proxy
        location / {
            proxy_pass http://bcards_backend;
            
            # Headers para proxy reverso
            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_set_header X-Forwarded-Host $host;
            proxy_set_header X-Forwarded-Port $server_port;
            
            # Timeouts
            proxy_connect_timeout 30s;
            proxy_send_timeout 30s;
            proxy_read_timeout 30s;
            
            # Buffer settings
            proxy_buffering on;
            proxy_buffer_size 4k;
            proxy_buffers 8 4k;
            
            # Retry configuration
            proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
            proxy_next_upstream_tries 2;
            proxy_next_upstream_timeout 10s;
        }
        
        # Static files caching
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
            proxy_pass http://bcards_backend;
            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;
            
            expires 1h;
            add_header Cache-Control "public";
            access_log off;
        }
        
        # Status page para monitoramento
        location = /status {
            access_log off;
            return 200 "{\n  \"status\": \"ok\",\n  \"timestamp\": \"$time_iso8601\",\n  \"server\": \"nginx-test\"\n}";
            add_header Content-Type application/json;
        }
        
        # Error pages
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
            root /usr/share/nginx/html;
        }
    }
    
    # Monitoring endpoint
    server {
        listen 8081;
        server_name localhost;
        
        location /nginx_status {
            stub_status on;
            access_log off;
            allow all;
        }
    }
}