// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
import type { NextApiRequest, NextApiResponse } from "next";
import { withIronSessionApiRoute } from "iron-session/next";
import { sessionOptions } from "@/lib/session";
import { Group, User } from "@/interfaces/user";
import { DurationUnit, Package, Payment } from "@/interfaces/paypal";
import { v4 } from "uuid";
import ShortUniqueId from "short-unique-id";
import axios from "axios";
import { IntentionResult, PaymentIntention, TransactionResult } from "@/interfaces/paymob";
import moment from "moment";
import client from "@/lib/mongodb";
import { getEntity } from "@/utils/entities.be";
import { Entity } from "@/interfaces/entity";
import { getEntityUsers } from "@/utils/users.be";
import { mapBy } from "@/utils";

const db = client.db(process.env.MONGODB_DB);

export default async function handler(req: NextApiRequest, res: NextApiResponse) {
	if (req.method === "POST") await post(req, res);
}

async function post(req: NextApiRequest, res: NextApiResponse) {
	const transactionResult = req.body as TransactionResult;
	const authToken = await authenticatePaymob();

	console.log("WEBHOOK: ", transactionResult);
	if (!checkTransaction(authToken, transactionResult.transaction.order.id)) return res.status(404).json({ ok: false });
	if (!transactionResult.transaction.success) return res.status(400).json({ ok: false });

	const { userID, duration, duration_unit, entity: entityID } = transactionResult.intention.extras.creation_extras as {
		userID: string;
		duration: number;
		duration_unit: DurationUnit;
		entity: string
	};

	const user = await db.collection("users").findOne<User>({ id: userID as string });

	if (!user || !duration || !duration_unit) return res.status(404).json({ ok: false });

	const subscriptionExpirationDate = user.subscriptionExpirationDate;
	if (!subscriptionExpirationDate) return res.status(200).json({ ok: false });

	const initialDate = moment(subscriptionExpirationDate).isAfter(moment()) ? moment(subscriptionExpirationDate) : moment();

	const updatedSubscriptionExpirationDate = moment(initialDate).add(duration, duration_unit).endOf("day").subtract(2, "hours").toISOString();

	await db.collection("users").updateOne(
		{ id: userID as string },
		{ $set: { subscriptionExpirationDate: updatedSubscriptionExpirationDate, status: "active" } }
	);

	await db.collection("paypalpayments").insertOne({
		id: v4(),
		createdAt: new Date().toISOString(),
		currency: transactionResult.transaction.currency,
		orderId: transactionResult.transaction.id,
		status: "COMPLETED",
		subscriptionDuration: duration,
		subscriptionDurationUnit: duration_unit,
		subscriptionExpirationDate: updatedSubscriptionExpirationDate,
		userId: userID,
		value: transactionResult.transaction.amount_cents / 1000,
	});

	if (entityID) {
		const entity = await getEntity(entityID)
		await db.collection<Entity>("entities").updateOne({ id: entityID }, { $set: { expiryDate: req.body.expiryDate } });

		const users = await getEntityUsers(entityID, 0, {
			subscriptionExpirationDate: entity?.expiryDate,
			$and: [
				{ type: { $ne: "admin" } },
				{ type: { $ne: "developer" } },
			]
		})

		await db.collection<User>("users").updateMany({ id: { $in: mapBy(users, 'id') } }, { $set: { subscriptionExpirationDate: req.body.expiryDate } })
	}

	res.status(200).json({
		ok: true,
	});
}

const authenticatePaymob = async () => {
	const response = await axios.post<{ token: string }>(
		"https://oman.paymob.com/api/auth/tokens",
		{
			api_key: process.env.PAYMOB_API_KEY,
		},
		{ headers: { Authorization: `Bearer ${process.env.PAYMOB_SECRET_KEY}` } },
	);

	return response.data.token;
};

const checkTransaction = async (token: string, orderID: number) => {
	const response = await axios.post("https://oman.paymob.com/api/ecommerce/orders/transaction_inquiry", { auth_token: token, order_id: orderID });

	return response.status === 200;
};