package com.hotent.im.network;

import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created by yanhongliang on 16/4/25.
 */
public class HttpQueue {

    public interface OnComplete {
        void onComplete(Response response);
    }

    /**
     * 获取队列中，当前网络请求数量
     * @return 返回当前网络请求数量
     */
    public static int getCount() {
        return datas.size();
    }

    /**
     * 清空队列
     */
    public static void clean() {
        if (request != null) {
            request.cancel();
            datas.clear();
            request = null;
        }
    }
    private static ArrayList<Data> datas;
    private static AbstractHttpPost request;
    static {
        datas = new ArrayList<>();
    }

    public static void addRequest(
            String actionUrl,
            Map<String, Object> params,
            HashMap<String, MultipartFile> files,
            OnComplete onComplete) {

        datas.add(new Data(actionUrl, params,files, onComplete));

        send();
    }

    private static void send() {
        if (datas.size() == 0) {
            return;
        }
        if (request != null) {
            return;
        }
        final Data data = datas.remove(0);
        request = new AbstractHttpPost() {
            @Override
            public void complete(Response response) {
                data.onComplete.onComplete(response);
                request = null;
                send();
            }
        };

        request.post(data.actionUrl, data.params, data.files);

    }

    private static class Data {
        String actionUrl;
        Map<String, Object> params;
        HashMap<String, MultipartFile> files;
        OnComplete onComplete;

        Data(String url, Map<String, Object> params, HashMap<String, MultipartFile> files, OnComplete onComplete) {
            this.actionUrl = url;
            this.params = params;
            this.files = files;
            this.onComplete = onComplete;
        }

    }
}