import { resolver } from "blitz"

import db, { Direction, Message, Prisma } from "../../../db"
import getCurrentCustomer from "../../customers/queries/get-current-customer"
import { decrypt } from "../../../db/_encryption"

export default resolver.pipe(resolver.authorize(), async (_ = null, context) => {
	const customer = await getCurrentCustomer(null, context)
	const messages = await db.message.findMany({
		where: { customerId: customer!.id },
		orderBy: { sentAt: Prisma.SortOrder.asc },
	})

	let conversations: Record<string, Message[]> = {}
	for (const message of messages) {
		let recipient: string
		if (message.direction === Direction.Outbound) {
			recipient = message.to
		} else {
			recipient = message.from
		}

		if (!conversations[recipient]) {
			conversations[recipient] = []
		}

		conversations[recipient]!.push({
			...message,
			content: decrypt(message.content, customer!.encryptionKey),
		})

		conversations[recipient]!.sort((a, b) => a.sentAt.getTime() - b.sentAt.getTime())
	}
	conversations = Object.fromEntries(
		Object.entries(conversations).sort(
			([, a], [, b]) => b[b.length - 1]!.sentAt.getTime() - a[a.length - 1]!.sentAt.getTime()
		)
	)

	return conversations
})