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/*
 * Copyright (C) 2018  Sun.Hao
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */

package lodsve.core.utils;

import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;

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

/**
 * 参数放入ThreadLocal中,同一线程中,不用传递参数,即可使用.
 *
 * @author sunhao([email protected])
 * @date 15/10/27 下午3:10
 */
public class ParamsHolder {
    private ParamsHolder() {
    }

    private static final ThreadLocal> PARAMS_HOLDER = new ThreadLocal<>();

    public static void set(String key, Object object) {
        Assert.hasText(key);

        Map params = PARAMS_HOLDER.get();
        if (params == null) {
            params = new HashMap<>(1);
        }

        params.put(key, object);

        PARAMS_HOLDER.set(params);
    }

    @SuppressWarnings("unchecked")
    public static  T get(String key) {
        Map params = PARAMS_HOLDER.get();
        if (CollectionUtils.isEmpty(params)) {
            return null;
        }

        return (T) params.get(key);
    }

    public static void remove(String key) {
        Map params = PARAMS_HOLDER.get();
        if (CollectionUtils.isEmpty(params)) {
            return;
        }

        params.remove(key);
    }

    public static void removes() {
        PARAMS_HOLDER.remove();
    }

    public static void sets(Map params) {
        PARAMS_HOLDER.set(params);
    }

    public static Map gets() {
        return PARAMS_HOLDER.get();
    }
}