/**
 * 总销售额分析策略，计算订单的总销售额和平均订单金额
 */
package com.orderprocessing;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class TotalSalesAnalysisStrategy implements OrderAnalysisStrategy {
    @Override
    public Map<String, Object> analyze(List<Order> orders) {
        Map<String, Object> results = new HashMap<>();
        
        if (orders == null || orders.isEmpty()) {
            results.put("totalSales", 0.0);
            results.put("averageOrderAmount", 0.0);
            results.put("orderCount", 0);
            return results;
        }
        
        double totalSales = 0.0;
        int processedOrderCount = 0;
        
        for (Order order : orders) {
            if (order.getStatus() == Order.OrderStatus.PROCESSED || 
                order.getStatus() == Order.OrderStatus.SHIPPED || 
                order.getStatus() == Order.OrderStatus.DELIVERED) {
                totalSales += order.getTotalAmount();
                processedOrderCount++;
            }
        }
        
        double averageOrderAmount = processedOrderCount > 0 ? totalSales / processedOrderCount : 0.0;
        
        results.put("totalSales", totalSales);
        results.put("averageOrderAmount", averageOrderAmount);
        results.put("orderCount", processedOrderCount);
        
        return results;
    }
    
    @Override
    public String getStrategyName() {
        return "总销售额分析";
    }
}