import { Command } from "commander";
import "dotenv/config";
import * as admin from "firebase-admin";
import * as moment from "moment-timezone";

interface ExportUserCommandArguments {
	startDate: string;
}

if (process.env.GOOGLE_APPLICATION_CREDENTIALS == null) {
	throw new Error("credential not found");
}
const serviceAccount = require(process.env.GOOGLE_APPLICATION_CREDENTIALS!);
admin.initializeApp({
	credential: admin.credential.cert(serviceAccount),
});

const program = new Command();
program.option("-s, --start-date <YYYY-MM-DDTHH:mm:ssZ>", "export start date").parse(process.argv);

const args = program.opts() as ExportUserCommandArguments;
if (args.startDate == null || !args.startDate) {
	throw new Error("Invalid start date");
}
const startDate = moment.tz(args.startDate, "YYYY-MM-DDTHH:mm:ssZ");

function formatDate(dt: Date) {
	return (
		[
			dt.getHours().toString().padStart(2, "0"),
			dt.getMinutes().toString().padStart(2, "0"),
			dt.getSeconds().toString().padStart(2, "0"),
		].join(":") +
		"." +
		dt.getMilliseconds().toString().padStart(3, "0")
	);
}

async function execute(startTs: admin.firestore.Timestamp) {
	const db = admin.firestore();
	const useres = db.collection("/users").where("createdAt", ">", startTs).orderBy("createdAt", "desc");
	const useresSs = await useres.get();
	useresSs.forEach((row) => {
		const rowData = row.data() as {
			name?: string;
			id: string;
			createdAt: admin.firestore.Timestamp;
		};
		if (rowData.name == null) return;
		const dt = rowData.createdAt.toDate();
		console.log([row.id, rowData.name, formatDate(dt)].join("\t"));
	});
}

console.log(`dump users from ${startDate.toLocaleString()}.`);

execute(admin.firestore.Timestamp.fromDate(startDate.toDate()));