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db.js
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db.js
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const hash = require("./hash.js");
const nanoId = require("nanoid");
const { MongoClient } = require("mongodb");
const uri =
"mongodb+srv://" +
process.env.mongoUser +
":" +
process.env.mongoKey +
process.env.mongoCluster +
process.env.mongoDB +
"?retryWrites=true&writeConcern=majority";
const client = new MongoClient(uri, {
useNewUrlParser: true,
useUnifiedTopology: true,
});
async function findUserWithId(userId) {
console.log("*****Find with userId******");
try {
console.log("Connecting to " + process.env.mongoDB);
let db = client.db(process.env.mongoDB);
console.log("Find userId Accessing " + process.env.mongoUserCol + " collection");
let users = db.collection(process.env.mongoUserCol);
console.log("Find userId Trying to find user with id: " + userId);
return await users
.findOne({
_id: userId,
})
.then((entry) => {
console.log("Found: ");
console.log(entry);
return entry;
});
} catch (err) {
console.log(err);
await client.close();
console.log("Connection CLOSED");
}
}
async function findUser(email) {
console.log("*****Find user******");
try {
console.log("Connecting to " + process.env.mongoDB);
let db = client.db(process.env.mongoDB);
console.log("Find user Accessing " + process.env.mongoUserCol + " collection");
let users = db.collection(process.env.mongoUserCol);
console.log("Find user Trying to find user with email: " + email);
return await users
.findOne({
email: email,
})
.then((entry) => {
console.log("Found: ");
console.log(entry);
return entry;
});
} catch (err) {
console.log(err);
await client.close();
console.log("Connection CLOSED");
}
}
async function addUser(email, pwd) {
console.log("*****Add user*****");
try {
console.log("Connecting to " + process.env.mongoDB);
let db = client.db(process.env.mongoDB);
console.log("Add user Accessing " + process.env.mongoUserCol + " collection");
let users = db.collection(process.env.mongoUserCol);
console.log("Add user Trying to add user with email: " + email);
let id = nanoId.nanoid();
return await hash.encode(id, pwd).then(async (hashedPwd) => {
return await users
.insertOne({
_id: id,
email: email,
pwd: hashedPwd,
})
.then((result) => {
console.log(
`${result.insertedCount} documents were inserted with the _id: ${result.insertedId}`
);
return result;
});
});
} catch (err) {
console.log(err);
await client.close();
console.log("Connection CLOSED");
}
}
async function addUserAddr(email, addr) {
console.log("*****Add Address*****");
try {
console.log("Connecting to " + process.env.mongoDB);
let db = client.db(process.env.mongoDB);
console.log("Add addr Accessing " + process.env.mongoUserCol + " collection");
let users = db.collection(process.env.mongoUserCol);
console.log("Add addr Trying to add addr for user: " + email);
return await users
.updateOne(
{
email: email,
},
{
$set: {
addr: addr,
},
}
)
.then((result) => {
console.log(
`${result.modifiedCount} documents were modified.`
);
return result;
});
} catch (err) {
console.log(err);
await client.close();
console.log("Connection CLOSED");
}
}
async function persistSession(userId, persistenceData) {
console.log("*****Persist Session*****");
try {
console.log("Connecting to " + process.env.mongoDB);
let db = client.db(process.env.mongoDB);
console.log("Persist Session Accessing " + process.env.mongoSessionCol + " collection");
let sessions = db.collection(process.env.mongoSessionCol);
console.log("Persist Session Trying to add session for user id: " + userId);
return await sessions
.updateOne(
{lookUp: persistenceData.lookUp},
{
$set: {
key: persistenceData.hashedKey,
userId: userId,
timeStamp: Date.now(),
},
},
{
upsert: true,
}
)
.then((result) => {
if(result.modifiedCount !== 0)
console.log(
`${result.modifiedCount} documents were modified for user _id: ${userId}`
);
if(result.upsertedCount !== 0)
console.log(
`${result.upsertedCount} documents were upserted with the _id: ${result.upsertedId._id}`
);
return result;
});
} catch (err) {
console.log(err);
await client.close();
console.log("Connection CLOSED");
}
}
async function findSession(lookUp) {
console.log("*****Find Session*****");
try {
console.log("Connecting to " + process.env.mongoDB);
let db = client.db(process.env.mongoDB);
console.log("Find Session Accessing " + process.env.mongoSessionCol + " collection");
let sessions = db.collection(process.env.mongoSessionCol);
console.log("Find Session Trying to find session with lookUp: " + lookUp);
return await sessions
.findOne({
lookUp: lookUp,
})
.then((entry) => {
console.log("Found: ");
console.log(entry);
return entry;
});
} catch (err) {
console.log(err);
await client.close();
console.log("Connection CLOSED");
}
}
async function deleteSession(lookUp) {
console.log("*****Delete Session*****");
try {
console.log("Connecting to " + process.env.mongoDB);
let db = client.db(process.env.mongoDB);
console.log("Delete Session Accessing " + process.env.mongoSessionCol + " collection");
let sessions = db.collection(process.env.mongoSessionCol);
console.log("Delete Session Trying to delete sessions with look up: " + lookUp);
return await sessions
.deleteOne({
lookUp: lookUp,
})
.then((result) => {
console.log(
`${result.deletedCount} documents were deleted with look up: ${lookUp}`
);
return result;
});
} catch (err) {
console.log(err);
await client.close();
console.log("Connection CLOSED");
}
}
exports.findUser = async function (email) {
return await findUser(email)
.then((user) => {
//not required just for understanding async functions
return user;
})
.catch((obj) => {
console.dir(obj);
return -1;
});
};
exports.addUser = async function (email, pwd) {
return await findUser(email)
.then(async function (user) {
if (!user) {
return await addUser(email, pwd).catch((obj) => {
console.dir(obj);
return -1;
});
} else {
return null;
}
})
.then((result) => {
return result;
})
.catch((obj) => {
console.dir(obj);
return -1;
});
};
exports.addUserAddr = async function (email, addr) {
return await findUser(email)
.then(async function (user) {
if (user) {
return await addUserAddr(email, addr).catch((obj) => {
console.dir(obj);
return -1;
});
} else {
return null;
}
})
.then((result) => {
return result;
})
.catch((obj) => {
console.dir(obj);
return -1;
});
};
exports.persistSession = async function (userId, persistenceData) {
return await persistSession(userId, persistenceData).catch((obj) => {
console.dir(obj);
return -1;
});
};
exports.sessionLookUp = async function (lookUp) {
return await findSession(lookUp)
.then(async function (persistenceData) {
if (
persistenceData &&
persistenceData.timeStamp + 30 * 24 * 60 * 60 * 1000 > Date.now()
) {
return await findUserWithId(persistenceData.userId)
.then((user) => {
return {
user: user,
lookUp: persistenceData.lookUp,
key: persistenceData.key
};
})
.catch((obj) => {
console.dir(obj);
return -1;
});
} else return null;
})
.catch((obj) => {
console.dir(obj);
return -1;
});
};
exports.deleteSession = async function (lookUp) {
return await deleteSession(lookUp).catch((obj)=>{
console.log(obj);
return -1;
});
};
exports.connect = async function () {
try {
if (!client.isConnected()) {
console.log("Connecting to mongoAtlas");
await client.connect();
}
} catch (err) {
console.log(err);
await client.close();
console.log("Connection CLOSED");
}
};
exports.close = async function () {
await client.close();
console.log("Connection CLOSED");
};