All files / dal pro-whatsapp-recipients.dal.ts

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94.25% Branches 82/87
100% Functions 22/22
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import {
	MAX_WHATSAPP_RECIPIENTS_PER_PRO,
	WHATSAPP_OTP_EXPIRY_MINUTES,
	WHATSAPP_OTP_RESEND_COOLDOWN_SECONDS,
} from "@interioring/utils/constants/whatsapp";
import { and, asc, eq, isNotNull, ne, sql } from "drizzle-orm";
import type { DrizzleD1Database } from "drizzle-orm/d1";
import * as schema from "../db/schema";
import type {
	NewProWhatsAppRecipientEvent,
	ProWhatsAppRecipient,
	ProWhatsAppRecipientEventType,
} from "../db/schema/pro-whatsapp-recipients";
import { generateOtp, hashOtp, verifyOtp } from "../lib/crypto/otp";
 
const RECIPIENTS = schema.proWhatsAppRecipients;
const EVENTS = schema.proWhatsAppRecipientEvents;
 
export type CreateRecipientInput = {
	proId: string;
	label: string;
	number: string; // pre-normalised E.164
	makePrimary?: boolean;
	actorUserId?: string;
};
 
export type CreatedRecipient = {
	recipient: ProWhatsAppRecipient;
	otpCode: string; // raw code; caller dispatches via WhatsApp
};
 
export type UpdateRecipientPatch = {
	label?: string;
	notificationsEnabled?: boolean;
	isPrimary?: boolean;
};
 
export class RecipientLimitError extends Error {
	code = "MAX_RECIPIENTS";
	constructor(public max: number) {
		super(`Maximum of ${max} WhatsApp recipients allowed`);
	}
}
export class DuplicateRecipientError extends Error {
	code = "DUPLICATE_NUMBER";
	constructor() {
		super("This number is already a recipient for this pro");
	}
}
export class RecipientNotFoundError extends Error {
	code = "NOT_FOUND";
	constructor() {
		super("Recipient not found");
	}
}
export class AlreadyVerifiedError extends Error {
	code = "ALREADY_VERIFIED";
	constructor() {
		super("Recipient is already verified");
	}
}
export class OtpExpiredError extends Error {
	code = "OTP_EXPIRED";
	constructor() {
		super("OTP has expired");
	}
}
export class OtpMismatchError extends Error {
	code = "OTP_MISMATCH";
	constructor() {
		super("OTP is incorrect");
	}
}
export class OtpCooldownError extends Error {
	code = "OTP_COOLDOWN";
	constructor(public retryAfterSeconds: number) {
		super(`Please wait ${retryAfterSeconds}s before requesting another OTP`);
	}
}
 
export class ProWhatsAppRecipientsDal {
	constructor(private db: DrizzleD1Database<typeof schema>) {}
 
	async listByProId(proId: string): Promise<ProWhatsAppRecipient[]> {
		// Primary first, then oldest first.
		return await this.db
			.select()
			.from(RECIPIENTS)
			.where(eq(RECIPIENTS.proId, proId))
			.orderBy(sql`${RECIPIENTS.isPrimary} DESC`, asc(RECIPIENTS.dateCreated));
	}
 
	async listEligibleByProId(proId: string): Promise<ProWhatsAppRecipient[]> {
		// Verified + opted in. Used by the new-inquiry handler.
		return await this.db
			.select()
			.from(RECIPIENTS)
			.where(
				and(
					eq(RECIPIENTS.proId, proId),
					eq(RECIPIENTS.notificationsEnabled, true),
					isNotNull(RECIPIENTS.verifiedAt),
				),
			)
			.orderBy(sql`${RECIPIENTS.isPrimary} DESC`, asc(RECIPIENTS.dateCreated));
	}
 
	async findById(
		id: number,
		proId: string,
	): Promise<ProWhatsAppRecipient | undefined> {
		const rows = await this.db
			.select()
			.from(RECIPIENTS)
			.where(and(eq(RECIPIENTS.id, id), eq(RECIPIENTS.proId, proId)))
			.limit(1);
		return rows[0];
	}
 
	async create(input: CreateRecipientInput): Promise<CreatedRecipient> {
		const existing = await this.listByProId(input.proId);
		if (existing.length >= MAX_WHATSAPP_RECIPIENTS_PER_PRO) {
			throw new RecipientLimitError(MAX_WHATSAPP_RECIPIENTS_PER_PRO);
		}
		if (existing.some((r) => r.number === input.number)) {
			throw new DuplicateRecipientError();
		}
 
		const isFirst = existing.length === 0;
		const requestedPrimary = isFirst || input.makePrimary === true;
 
		const code = generateOtp();
		const otpHash = await hashOtp(code);
		const now = new Date();
		const expires = new Date(
			now.getTime() + WHATSAPP_OTP_EXPIRY_MINUTES * 60 * 1000,
		);
 
		const inserted = await this.db
			.insert(RECIPIENTS)
			.values({
				proId: input.proId,
				label: input.label,
				number: input.number,
				isPrimary: requestedPrimary,
				notificationsEnabled: true,
				verifiedAt: null,
				otpHash,
				otpExpiresAt: expires,
				otpLastSentAt: now,
				dateCreated: now,
				dateUpdated: now,
			})
			.returning();
		const recipient = inserted[0];
 
		// If this row claimed primary AND there were others, demote them.
		if (requestedPrimary && existing.length > 0) {
			await this.db
				.update(RECIPIENTS)
				.set({ isPrimary: false, dateUpdated: now })
				.where(
					and(
						eq(RECIPIENTS.proId, input.proId),
						ne(RECIPIENTS.id, recipient.id),
						eq(RECIPIENTS.isPrimary, true),
					),
				);
			for (const r of existing.filter((r) => r.isPrimary)) {
				await this.writeEvent({
					recipientId: r.id,
					proId: input.proId,
					eventType: "primary_unset",
					actorUserId: input.actorUserId ?? null,
					metadata: { reason: "new_primary_added", newRecipientId: recipient.id },
				});
			}
		}
 
		await this.writeEvent({
			recipientId: recipient.id,
			proId: input.proId,
			eventType: "created",
			actorUserId: input.actorUserId ?? null,
			metadata: { label: input.label, isPrimary: requestedPrimary },
		});
		await this.writeEvent({
			recipientId: recipient.id,
			proId: input.proId,
			eventType: "otp_sent",
			actorUserId: input.actorUserId ?? null,
			metadata: { reason: "create" },
		});
 
		return { recipient, otpCode: code };
	}
 
	async updatePartial(
		id: number,
		proId: string,
		patch: UpdateRecipientPatch,
		actorUserId?: string,
	): Promise<ProWhatsAppRecipient> {
		const current = await this.findById(id, proId);
		if (!current) throw new RecipientNotFoundError();
 
		const now = new Date();
		const sets: Record<string, unknown> = { dateUpdated: now };
		const events: NewProWhatsAppRecipientEvent[] = [];
 
		if (patch.label !== undefined && patch.label !== current.label) {
			sets.label = patch.label;
			events.push({
				recipientId: id,
				proId,
				eventType: "label_updated",
				actorUserId: actorUserId ?? null,
				metadata: { from: current.label, to: patch.label },
				dateCreated: now,
			});
		}
		if (
			patch.notificationsEnabled !== undefined &&
			patch.notificationsEnabled !== current.notificationsEnabled
		) {
			sets.notificationsEnabled = patch.notificationsEnabled;
			events.push({
				recipientId: id,
				proId,
				eventType: patch.notificationsEnabled
					? "notifications_enabled"
					: "notifications_disabled",
				actorUserId: actorUserId ?? null,
				metadata: null,
				dateCreated: now,
			});
		}
 
		const wantsPrimary = patch.isPrimary === true && !current.isPrimary;
 
		// Capture pre-flip primaries (needed for accurate primary_unset audit events)
		// before any state mutation.
		const priorPrimaries = wantsPrimary
			? (
					await this.db
						.select({ id: RECIPIENTS.id })
						.from(RECIPIENTS)
						.where(
							and(
								eq(RECIPIENTS.proId, proId),
								eq(RECIPIENTS.isPrimary, true),
								ne(RECIPIENTS.id, id),
							),
						)
				).map((r) => r.id)
			: [];
 
		// Apply non-primary updates first.
		if (Object.keys(sets).length > 1) {
			await this.db.update(RECIPIENTS).set(sets).where(eq(RECIPIENTS.id, id));
		}
 
		if (wantsPrimary) {
			// Atomic flip via D1 batch: demote others, promote this row.
			await this.db.batch([
				this.db
					.update(RECIPIENTS)
					.set({ isPrimary: false, dateUpdated: now })
					.where(
						and(eq(RECIPIENTS.proId, proId), eq(RECIPIENTS.isPrimary, true)),
					),
				this.db
					.update(RECIPIENTS)
					.set({ isPrimary: true, dateUpdated: now })
					.where(eq(RECIPIENTS.id, id)),
			]);
 
			for (const demotedId of priorPrimaries) {
				events.push({
					recipientId: demotedId,
					proId,
					eventType: "primary_unset",
					actorUserId: actorUserId ?? null,
					metadata: { reason: "primary_replaced", newPrimaryId: id },
					dateCreated: now,
				});
			}
			events.push({
				recipientId: id,
				proId,
				eventType: "primary_set",
				actorUserId: actorUserId ?? null,
				metadata: { reason: "user_promoted" },
				dateCreated: now,
			});
		}
 
		if (events.length > 0) {
			await this.db.insert(EVENTS).values(events);
		}
 
		const updated = await this.findById(id, proId);
		Iif (!updated) throw new RecipientNotFoundError();
		return updated;
	}
 
	async delete(
		id: number,
		proId: string,
		actorUserId?: string,
	): Promise<void> {
		const all = await this.listByProId(proId);
		const target = all.find((r) => r.id === id);
		if (!target) throw new RecipientNotFoundError();
 
		const now = new Date();
 
		if (target.isPrimary) {
			// listByProId already orders by isPrimary DESC, then dateCreated ASC.
			// After excluding the deleted primary, remaining[0] is the next-oldest.
			const remaining = all.filter((r) => r.id !== id);
			const promote = remaining[0];
			if (promote) {
				await this.db.batch([
					this.db.delete(RECIPIENTS).where(eq(RECIPIENTS.id, id)),
					this.db
						.update(RECIPIENTS)
						.set({ isPrimary: true, dateUpdated: now })
						.where(eq(RECIPIENTS.id, promote.id)),
				]);
				await this.db.insert(EVENTS).values([
					{
						recipientId: id,
						proId,
						eventType: "deleted",
						actorUserId: actorUserId ?? null,
						metadata: { wasPrimary: true, promotedRecipientId: promote.id },
						dateCreated: now,
					},
					{
						recipientId: promote.id,
						proId,
						eventType: "primary_set",
						actorUserId: actorUserId ?? null,
						metadata: { reason: "primary_handoff" },
						dateCreated: now,
					},
				]);
				return;
			}
		}
 
		await this.db.delete(RECIPIENTS).where(eq(RECIPIENTS.id, id));
		await this.writeEvent({
			recipientId: id,
			proId,
			eventType: "deleted",
			actorUserId: actorUserId ?? null,
			metadata: { wasPrimary: target.isPrimary },
		});
	}
 
	async verify(
		id: number,
		proId: string,
		code: string,
		actorUserId?: string,
	): Promise<ProWhatsAppRecipient> {
		const current = await this.findById(id, proId);
		Iif (!current) throw new RecipientNotFoundError();
		if (current.verifiedAt) throw new AlreadyVerifiedError();
		if (
			!current.otpHash ||
			!current.otpExpiresAt ||
			current.otpExpiresAt.getTime() < Date.now()
		) {
			throw new OtpExpiredError();
		}
		const ok = await verifyOtp(code, current.otpHash);
		if (!ok) throw new OtpMismatchError();
 
		const now = new Date();
		await this.db
			.update(RECIPIENTS)
			.set({
				verifiedAt: now,
				otpHash: null,
				otpExpiresAt: null,
				dateUpdated: now,
			})
			.where(eq(RECIPIENTS.id, id));
		await this.writeEvent({
			recipientId: id,
			proId,
			eventType: "verified",
			actorUserId: actorUserId ?? null,
			metadata: null,
		});
		const updated = await this.findById(id, proId);
		Iif (!updated) throw new RecipientNotFoundError();
		return updated;
	}
 
	async regenerateOtp(
		id: number,
		proId: string,
		actorUserId?: string,
	): Promise<{ recipient: ProWhatsAppRecipient; otpCode: string }> {
		const current = await this.findById(id, proId);
		if (!current) throw new RecipientNotFoundError();
		if (current.verifiedAt) throw new AlreadyVerifiedError();
 
		Eif (current.otpLastSentAt) {
			const elapsed = Date.now() - current.otpLastSentAt.getTime();
			const cooldown = WHATSAPP_OTP_RESEND_COOLDOWN_SECONDS * 1000;
			if (elapsed < cooldown) {
				throw new OtpCooldownError(Math.ceil((cooldown - elapsed) / 1000));
			}
		}
 
		const code = generateOtp();
		const otpHash = await hashOtp(code);
		const now = new Date();
		const expires = new Date(
			now.getTime() + WHATSAPP_OTP_EXPIRY_MINUTES * 60 * 1000,
		);
		await this.db
			.update(RECIPIENTS)
			.set({
				otpHash,
				otpExpiresAt: expires,
				otpLastSentAt: now,
				dateUpdated: now,
			})
			.where(eq(RECIPIENTS.id, id));
		await this.writeEvent({
			recipientId: id,
			proId,
			eventType: "otp_sent",
			actorUserId: actorUserId ?? null,
			metadata: { reason: "resend" },
		});
		const updated = await this.findById(id, proId);
		Iif (!updated) throw new RecipientNotFoundError();
		return { recipient: updated, otpCode: code };
	}
 
	private async writeEvent(input: {
		recipientId: number;
		proId: string;
		eventType: ProWhatsAppRecipientEventType;
		actorUserId: string | null;
		metadata: Record<string, unknown> | null;
	}): Promise<void> {
		await this.db.insert(EVENTS).values({
			recipientId: input.recipientId,
			proId: input.proId,
			eventType: input.eventType,
			actorUserId: input.actorUserId,
			metadata: input.metadata,
			dateCreated: new Date(),
		});
	}
}