// const event = require('myevents');
//
//
// let taskList_proxy = new Proxy({}, {
//     set: function(target, key, value, receiver) {
//         let bol = Reflect.set(target, key, value, receiver);
//         event.emit('task_num_change');
//         return bol;
//     },
//     deleteProperty: function(target, propKey) {
//         let bol = Reflect.deleteProperty(target, propKey);
//         event.emit('task_num_change');
//         return bol;
//     }
// });
//
// module.exports = {
//       downloadingTasks: taskList_proxy,
//       stopDownloadTasks: {},
// };
const event = require('myevents');


let taskList = {},
    QUEUE_STATUS = true //全局任务状态 ， 0 可以进行下一个任务;

module.exports = {
    add: function (task) {
        if (taskList[task._id]) {
            return false;
        }
        
        taskList[task._id] = task;
        return true;
    },
    remove: function (_id) {
        taskList[_id] = null;
        delete taskList[_id];
    },
    clear: function name(params) {
        taskList = {};
    },
    find: function (_id) {
        return taskList[_id];
    },
    list: function () {
        return taskList;
    },
    stopAll: function () {
        QUEUE_STATUS = false;
    },
    startAll: function () {
        QUEUE_STATUS = true;
    },
    get queue_status() {
        return QUEUE_STATUS;
    },
    get taskNum() {
        return Object.keys(taskList).length;
    }
};