import distributedObject from '@ohos.data.distributedDataObject'
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import distributedObject from '@ohos.data.distributedDataObject'
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// 创建对象，对象包含3个基本属性：name,age和isVis；2个复杂属性：parent,list
var g_object = distributedObject.createDistributedObject({name:undefined, age:undefined, isVis:true, parent:undefined, list:undefined});
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const SESSION_ID = "__sessionId";

class Distributed {
    constructor(obj) {
        this.__proxy = obj;
        Object.keys(obj).forEach(key => {
            Object.defineProperty(this, key, {
                enumerable: true,
                configurable: true,
                get: function () {
                    return this.__proxy[key];
                },
                set: function (newValue) {
                    this.__proxy[key] = newValue;
                }
            });
        });
        Object.defineProperty(this, SESSION_ID, {
            enumerable: true,
            configurable: true,
            get: function () {
                return this.__proxy[SESSION_ID];
            },
            set: function (newValue) {
                this.__proxy[SESSION_ID] = newValue;
            }
        });
        this.__objectId = randomNum();
        console.info("constructor success ");
    }
    
    //------------------------------------------------------其余内容此处省略
    
    __proxy;
    __objectId;
}
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g_object.setSessionId(distributedObject.genSessionId());
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setSessionId(sessionId) {
        if (sessionId == null || sessionId == "") {
            leaveSession(this.__proxy);  //退出同步组网
            return false;
        }
        if (this.__proxy[SESSION_ID] == sessionId) {
            console.info("same session has joined " + sessionId);
            return true;
        }
        leaveSession(this.__proxy); //退出同步组网
        //加入sessionId值对应的同步组网，返回新生成的对象
        let object = joinSession(this.__proxy, this.__objectId, sessionId); 
        if (object != null) {
            this.__proxy = object;//替换新生成的对象
            return true;
        }
        return false;
    }
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//sessionId与发起方的__sessionId一致
g_object.setSessionId(sessionId);
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changeCallback : function (sessionId,  changeData) {
        console.info("change" + sessionId + " " + this.response);

        if (changeData != null && changeData != undefined) {
            changeData.forEach(element => {
                console.info("changed !" + element + " " + g_object[element]);
        });
        }
} 
g_object.on("change", this.changeCallback);
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g_object.name = "jack";
g_object.age = 19;
g_object.isVis = false; 
g_object.parent = {mother:"jack mom",father:"jack Dad"};
g_object.list = [{mother:"jack mom"}, {father:"jack Dad"}];
// 对端设备收到change回调，fields为name,age,isVis,parent和list
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//支持的修改方式
g_object.parent = {mother:"mom", father:"dad"};
//不支持的修改方式
g_object.parent.mother = "mom";
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console.info("name " + g_object["name"]); //访问到的是组网内最新数据
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//删除变更回调changeCallback
g_object.off("change", changeCallback);
//删除所有的变更回调
g_object.off("change"); 
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statusCallback : function (sessionId, networkid, status) {
  this.response += "status changed " + sessionId + " " + status + " " + networkId;
}

g_object.on("status", this.changeCallback);
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//删除上下线回调changeCallback
g_object.off("status", changeCallback);
//删除所有的上下线回调
g_object.off("status");
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//两种方式均可
g_object.setSessionId("");
g_object.setSessionId();
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class DistributedObjectStoreImpl : public DistributedObjectStore
{
public:
	DistributedObject *CreateObject(const std::string &sessionId) override;
	uint32_t DeleteObject(const std::string &sessionId) override;
    //此处的watch主要针对change监听
	uint32_t Watch(DistributedObject *object, std::shared_ptr<ObjectWatcher> watcher) override;
	uint32_t UnWatch(DistributedObject *object) override;
    
    //其余内容省略
}
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