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import type { DrizzleD1Database } from "drizzle-orm/d1";
import * as schema from "../db/schema";
import type { Notification, NewNotification } from "../db/schema";
export class NotificationsDal {
constructor(private db: DrizzleD1Database<typeof schema>) {}
async create(data: NewNotification): Promise<Notification> {
const result = await this.db
.insert(schema.notifications)
.values(data)
.returning();
return result[0];
}
async createMany(data: NewNotification[]): Promise<void> {
await this.db.insert(schema.notifications).values(data);
}
async findByUser(
userId: string,
filters?: {
category?: (typeof schema.NOTIFICATION_CATEGORIES)[number];
search?: string;
limit?: number;
offset?: number;
},
): Promise<{ notifications: Notification[]; total: number; unreadCount: number }> {
const limit = filters?.limit ?? 20;
const offset = filters?.offset ?? 0;
// Base conditions for the query (with category/search filters)
const conditions = [
eq(schema.notifications.userId, userId),
isNull(schema.notifications.deletedAt),
];
if (filters?.category) {
conditions.push(eq(schema.notifications.category, filters.category));
}
if (filters?.search) {
const searchPattern = `%${filters.search}%`;
const searchCondition = or(
like(schema.notifications.title, searchPattern),
like(schema.notifications.body, searchPattern),
);
Eif (searchCondition) conditions.push(searchCondition);
}
const whereClause = and(...conditions);
// Fetch notifications with ordering: unread first, then date_created DESC
const notifications = await this.db
.select()
.from(schema.notifications)
.where(whereClause)
.orderBy(
sql`CASE WHEN ${schema.notifications.readAt} IS NULL THEN 0 ELSE 1 END`,
desc(schema.notifications.dateCreated),
)
.limit(limit)
.offset(offset);
// Total count with filters applied
const totalResult = await this.db
.select({ count: sql<number>`count(*)` })
.from(schema.notifications)
.where(whereClause);
const total = totalResult[0]?.count ?? 0;
// Unread count: ALWAYS total unread for user, ignoring category/search filters
const unreadCountResult = await this.db
.select({ count: sql<number>`count(*)` })
.from(schema.notifications)
.where(
and(
eq(schema.notifications.userId, userId),
isNull(schema.notifications.deletedAt),
isNull(schema.notifications.readAt),
),
);
const unreadCount = unreadCountResult[0]?.count ?? 0;
return { notifications, total, unreadCount };
}
async getUnreadCount(userId: string): Promise<number> {
const result = await this.db
.select({ count: sql<number>`count(*)` })
.from(schema.notifications)
.where(
and(
eq(schema.notifications.userId, userId),
isNull(schema.notifications.deletedAt),
isNull(schema.notifications.readAt),
),
);
return result[0]?.count ?? 0;
}
async findById(id: string): Promise<Notification | undefined> {
const result = await this.db
.select()
.from(schema.notifications)
.where(
and(
eq(schema.notifications.id, id),
isNull(schema.notifications.deletedAt),
),
)
.limit(1);
return result[0];
}
async markAsRead(id: string): Promise<void> {
await this.db
.update(schema.notifications)
.set({ readAt: new Date() })
.where(eq(schema.notifications.id, id));
}
async markAllAsRead(userId: string, category?: (typeof schema.NOTIFICATION_CATEGORIES)[number]): Promise<number> {
const conditions = [
eq(schema.notifications.userId, userId),
isNull(schema.notifications.deletedAt),
isNull(schema.notifications.readAt),
];
if (category) {
conditions.push(eq(schema.notifications.category, category));
}
const result = await this.db
.update(schema.notifications)
.set({ readAt: new Date() })
.where(and(...conditions));
return result.meta.changes;
}
async softDelete(id: string): Promise<void> {
await this.db
.update(schema.notifications)
.set({ deletedAt: new Date() })
.where(eq(schema.notifications.id, id));
}
async softDeleteMany(ids: string[], userId: string): Promise<number> {
const result = await this.db
.update(schema.notifications)
.set({ deletedAt: new Date() })
.where(
and(
inArray(schema.notifications.id, ids),
eq(schema.notifications.userId, userId),
),
);
return result.meta.changes;
}
}
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