package com.zy.acs.manager.core.service;

import com.zy.acs.manager.core.domain.TimeWindow;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * dynamic time window
 * Created by vincent on 11/1/2024
 */
@Service
public class TimeWindowService {

    public static final Map<String, List<TimeWindow>> TIME_WINDOW_MAP = new ConcurrentHashMap<>();

    // 预定时间窗口
    public synchronized boolean reserve(String key, TimeWindow window, String vehicle) {

        List<TimeWindow> windows = TIME_WINDOW_MAP.getOrDefault(key, new ArrayList<>());

        for (TimeWindow reservedWindow : windows) {
            if (reservedWindow.isConflict(window)) {
                return false;
            }
        }

        windows.add(window);
        TIME_WINDOW_MAP.put(key, windows);
        return true;
    }

    // 释放时间窗口
    public synchronized void release(String key, TimeWindow window, String vehicle) {
        List<TimeWindow> windows = TIME_WINDOW_MAP.get(key);
        if (windows != null) {
            windows.remove(window);
            if (windows.isEmpty()) {
                TIME_WINDOW_MAP.remove(key);
            }
        }
    }

}