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utils.js
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const request = require('request');
const Datastore = require('nedb');
const db = new Datastore();
module.exports.saveRecord = function (obj) {
let { uid, subscription } = obj;
return new Promise((r, j) => {
db.findOne(
{ 'subscription.endpoint': subscription.endpoint },
(err, res) => {
if (err) {
j(err);
return;
}
if (res) {
console.log('已存在');
res.uid = uid;
db.update({ subscription }, res, {}, (err) => {
if (err) {
j(err);
return;
}
r(obj);
});
return;
}
db.insert(obj, (err, item) => {
if (err) {
j(err);
return;
}
console.log('存储完毕');
r(obj);
});
}
);
});
};
module.exports.find = function (query) {
return new Promise((r, j) => {
db.find(query, (err, list) => {
if (err) {
j(err);
return;
}
r(list);
});
});
};
module.exports.findAll = function () {
return new Promise((r, j) => {
db.find({}, (err, list) => {
if (err) {
j(err);
return;
}
r(list);
});
});
};
module.exports.remove = function (obj) {
return new Promise((r, j) => {
db.remove(obj, { multi: true }, (err, num) => {
if (err) {
j(err);
return;
}
r(num);
});
});
};