const MongoClient = require(“mongodb”).MongoClient
const ObjectId = require(“mongodb”).ObjectId
const MongoError = require(“mongodb”).MongoError
/**
// This leading semicolon (
is to make this Immediately Invoked Function Expression (IIFE).
// To read more about this type of expression, refer to https://developer.mozilla.org/en-US/docs/Glossary/IIFE
;(async () => {
try {
// ensure you update your host information below!
const host =“Left Out on purpose” // Connection is working
const client = await MongoClient.connect(
host,
{ useNewUrlParser: true },
)
const mflix = client.db(“mflix”)
// TODO: Create the proper predicate and projection
// add a predicate that checks that the `lastupdated` field exists, and then
// check that its type is a string
// a projection is not required, but may help reduce the amount of data sent
// over the wire!
// db.movies.find({lastupdated: { $exists: true, $type : "string"}}, {lastupdated:true})
//code commented out for reason
console.log(
"\x1b[32m",
`Found ${moviesToMigrate.length} documents to update`,
)
// TODO: Complete the BulkWrite statement below
const { modifiedCount } = await "some bulk operation"
console.log("\x1b[32m", `${modifiedCount} documents updated`)
client.close()
process.exit(0)
} catch (e) {
if (
e instanceof MongoError &&
e.message.slice(0, “Invalid Operation”.length) === “Invalid Operation”
) {
console.log("\x1b[32m", “No documents to update”)
} else {
console.error("\x1b[31m", Error during migration, ${e})
}
process.exit(1)
}
})()
