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comIndex.js
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comIndex.js
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const ws = require("nodejs-websocket");
const url = require("url");
const { Com } = require("./ComUtil");
const { readJsonFileSync, writeJsonFileSync } = require("./fileUtil");
const comDataFilePath = "./data/com_data.json";
let dataChangeCount = 0;
/**
* 通信连接参数配置
*/
let comItemsConfig = [];
let coms = {};
const newCom = (item) => {
let com = new Com(
item,
(updData) => {
let { key, value } = updData;
let keys = key.split(".");
let tmp = "item";
for (let i = 0; i < keys.length; i++) {
tmp += `['${keys[i]}']`;
}
tmp += "=" + value;
eval(tmp);
item.cws.sendText(
JSON.stringify({
action: "update",
updData,
})
);
},
(data) => {
item.cws.sendText(
JSON.stringify({
action: "data",
data,
})
);
},
(data) => {
item.cws.sendText(
JSON.stringify({
action: "error",
data,
})
);
}
);
coms[item.name] = com;
};
const initComs = () => {
comItemsConfig.forEach((item) => {
item.comStatus = 0;
item.listenStatus = 0;
newCom(item);
});
};
// 读取已保存的配置
let configs = readJsonFileSync(comDataFilePath);
comItemsConfig = configs ? configs : [];
initComs();
const getItemByName = (name) => {
let res = null;
comItemsConfig.forEach((item) => {
if (item.name == name) {
res = item;
}
});
return res;
};
const getParamByName = (itemName, sendRecvType, paramName) => {
let item = getItemByName(itemName);
let param = null;
if (item) {
item[sendRecvType].forEach((iParam) => {
if (iParam.name == paramName) {
param = iParam;
}
});
}
return param;
};
const saveComDataFile = (count) => {
if (count && dataChangeCount++ > count) {
dataChangeCount = 0;
return false;
}
writeJsonFileSync(comDataFilePath, comItemsConfig);
};
const addAndSaveComItems = (item) => {
let index = -1;
for (let i = 0; i < comItemsConfig.length; i++) {
if (comItemsConfig[i].name == item.name) {
index = i;
break;
}
}
if (index != -1) {
comItemsConfig[i] = item;
if (coms[item.name]) {
coms[item.name].destroy();
}
} else {
comItemsConfig.push(item);
}
newCom(item);
saveComDataFile();
};
const withoutCws = (key, value) => {
if (key == "cws") {
return undefined;
} else {
return value;
}
};
const delAndSaveComItems = (name) => {
let index = -1;
for (let i = 0; i < comItemsConfig.length; i++) {
if (comItemsConfig[i].name == name) {
index = i;
break;
}
}
if (index != -1) {
comItemsConfig.splice(index, 1);
if (coms[name]) {
coms[name].destroy();
delete coms[name];
}
saveComDataFile();
}
};
const addAndSaveItemParam = (name, type, param) => {
let item = getItemByName(name);
if (item && !getParamByName(name, type, param.name)) {
let itemParam = type == "send" ? item.send : item.recv;
if (param.type == "str" && param.lengthType == "ZD") {
param.length = Buffer.byteLength(param.value, "utf-8");
}
itemParam.push(param);
saveComDataFile();
}
return item;
};
const editAndSaveItemParam = ({ name, type, paramName, value }) => {
let param = getParamByName(name, type, paramName);
param.value = value;
if (param.type == "str" && param.lengthType == "ZD") {
param.length = Buffer.byteLength(param.value, "utf-8");
}
saveComDataFile(10);
return getItemByName(name);
};
const delAndSaveItemParam = ({ name, type, paramName }) => {
let item = getItemByName(name);
let index = -1;
for (let i = 0; i < item[type].length; i++) {
if (item[type][i].name == paramName) {
index = i;
break;
}
}
if (index != -1) {
item[type].splice(index, 1);
saveComDataFile();
}
return item;
};
const changeAndSaveItemParamIndex = ({ name, type, paramName, value }) => {
let item = getItemByName(name);
let index = -1;
for (let i = 0; i < item[type].length; i++) {
if (item[type][i].name == paramName) {
index = i;
break;
}
}
if (index != -1) {
let p = item[type].splice(index, 1)[0];
item[type].splice(index + value, 0, p);
saveComDataFile();
}
return item;
};
const sendNowParams = ({ conn, action, item, data }) => {
conn.sendText(
JSON.stringify({
action,
name: data.data.name,
type: data.data.type,
params: item[data.data.type],
})
);
};
try {
const server = ws
.createServer(function (conn) {
console.log("New connection");
let wsPath = url.parse(decodeURI(conn.path));
let params = {};
if (wsPath.query) {
let tmp = wsPath.query.split("&");
tmp.forEach((item) => {
let tmp2 = item.split("=");
params[tmp2[0]] = tmp2[1];
});
}
let action = wsPath.pathname;
if (action == "/getAll") {
conn.on("text", function (str) {
let res = JSON.stringify(comItemsConfig, withoutCws);
conn.sendText(res);
});
} else if (action == "/item") {
conn.on("text", function (str) {
let data = JSON.parse(str);
let type = data.type;
if (type == "add") {
addAndSaveComItems(data.item);
conn.sendText(
JSON.stringify({ action: "update", item: data.item })
);
} else if (type == "del") {
delAndSaveComItems(data.name);
} else if (type == "addParam") {
let item = addAndSaveItemParam(
data.data.name,
data.data.type,
data.data.param
);
sendNowParams({ conn, action: "updateParams", item, data });
} else if (type == "editParam") {
let item = editAndSaveItemParam(data.data);
sendNowParams({ conn, action: "updateParams", item, data });
} else if (type == "delParam") {
let item = delAndSaveItemParam(data.data);
sendNowParams({ conn, action: "updateParams", item, data });
} else if (type == "changeParamIndex") {
let item = changeAndSaveItemParamIndex(data.data);
sendNowParams({ conn, action: "updateParams", item, data });
}
});
} else if (action == "/connect") {
// 连接处理
let itemName = params.name;
let item = getItemByName(itemName);
item.cws = conn;
conn.on("text", function (str) {
if (str == "connect") {
coms[itemName].connect();
} else if (str == "disconnect") {
coms[itemName].destroy();
} else if (str == "send") {
coms[itemName].send();
} else if (str == "listen") {
coms[itemName].listen(true);
} else if (str == "stopListen") {
coms[itemName].listen(false);
}
});
} else if (action == "/disconnect") {
}
conn.on("error", function (e) {
// console.log(e);
});
})
.listen(20003);
} catch (error) {
console.error(error);
}