| 1 | import { Notification, NotificationKind } from "@prisma/client";
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| 2 | import { endOfDay } from "date-fns";
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| 3 |
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| 4 | import { prisma } from "@app/lib/prisma";
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| 5 | import { APP_TIMEZONE } from "@app/lib/appTime";
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| 6 | import { logger } from "@app/lib/logger";
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| 7 | import { sendPushNotification } from "@app/lib/sendPushNotification";
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| 8 |
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| 9 | export type CreateNotificationInput = {
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| 10 | userId: number;
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| 11 | kind: NotificationKind;
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| 12 | title: string;
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| 13 | body: string;
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| 14 | scheduledFor: Date;
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| 15 | regimenId?: number | null;
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| 16 | };
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| 17 |
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| 18 | const endOfAppDay = (scheduledFor: Date): Date =>
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| 19 | endOfDay(scheduledFor, { in: APP_TIMEZONE });
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| 20 |
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| 21 | // The only place a kind's behaviour is described: how long it stays relevant,
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| 22 | // and where tapping it should lead
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| 23 | type NotificationRule = {
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| 24 | expiresAt: (scheduledFor: Date) => Date | null;
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| 25 | screen?: string;
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| 26 | };
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| 27 |
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| 28 | const notificationRules: Record<NotificationKind, NotificationRule> = {
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| 29 | [NotificationKind.DAILY_REMINDER]: {
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| 30 | expiresAt: endOfAppDay,
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| 31 | screen: "moods",
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| 32 | },
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| 33 | [NotificationKind.MEDICINE_REMINDER]: {
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| 34 | expiresAt: endOfAppDay,
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| 35 | screen: "medicine-regimens",
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| 36 | },
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| 37 | [NotificationKind.INSIGHT_ALERT]: {
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| 38 | expiresAt: () => null,
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| 39 | },
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| 40 | };
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| 41 |
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| 42 | export const createNotification = async (
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| 43 | input: CreateNotificationInput
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| 44 | ): Promise<Notification | null> => {
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| 45 | const { userId, kind, title, body, scheduledFor, regimenId = null } = input;
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| 46 |
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| 47 | const user = await prisma.user.findUnique({
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| 48 | where: { id: userId },
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| 49 | select: { pushToken: true, notificationsEnabled: true },
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| 50 | });
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| 51 |
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| 52 | if (!user) {
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| 53 | logger.warn({ userId, kind }, "[notification] user not found, skipping");
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| 54 |
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| 55 | return null;
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| 56 | }
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| 57 |
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| 58 | const rule = notificationRules[kind];
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| 59 |
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| 60 | const notification = await prisma.notification.create({
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| 61 | data: {
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| 62 | userId,
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| 63 | kind,
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| 64 | title,
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| 65 | body,
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| 66 | scheduledFor,
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| 67 | regimenId,
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| 68 | expiresAt: rule.expiresAt(scheduledFor),
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| 69 | },
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| 70 | });
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| 71 |
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| 72 | if (!user.notificationsEnabled || !user.pushToken) {
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| 73 | logger.info(
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| 74 | { notificationId: notification.id, userId, kind },
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| 75 | "[notification] stored without push"
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| 76 | );
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| 77 |
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| 78 | return notification;
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| 79 | }
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| 80 |
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| 81 | const data = {
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| 82 | ...(rule.screen ? { screen: rule.screen } : {}),
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| 83 | ...(regimenId !== null ? { regimenId } : {}),
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| 84 | };
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| 85 |
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| 86 | try {
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| 87 | await sendPushNotification({
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| 88 | token: user.pushToken,
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| 89 | title,
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| 90 | body,
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| 91 | data,
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| 92 | });
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| 93 | } catch (error) {
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| 94 | logger.error(
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| 95 | { notificationId: notification.id, userId, err: error },
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| 96 | "[notification] push failed"
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| 97 | );
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| 98 |
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| 99 | return notification;
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| 100 | }
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| 101 |
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| 102 | logger.info(
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| 103 | { notificationId: notification.id, userId, kind },
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| 104 | "[notification] push sent"
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| 105 | );
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| 106 |
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| 107 | return prisma.notification.update({
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| 108 | where: { id: notification.id },
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| 109 | data: { pushedAt: new Date() },
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| 110 | });
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| 111 | };
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