All files / dal restriction.dal.ts

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// Data Access Layer — Restrict Direct Contact (cohorts + per-pro status + gates)
import { desc, eq } from "drizzle-orm";
import type { DrizzleD1Database } from "drizzle-orm/d1";
import type {
	NewPrerequisiteGateCheck,
	NewRestrictionCohort,
	PrerequisiteGateCheck,
	ProRestrictionStatus,
	RestrictionCohort,
} from "../db/schema";
import * as schema from "../db/schema";
 
export class ProRestrictionStatusDal {
	constructor(private db: DrizzleD1Database<typeof schema>) {}
 
	async get(proId: string): Promise<ProRestrictionStatus | undefined> {
		const rows = await this.db
			.select()
			.from(schema.proRestrictionStatus)
			.where(eq(schema.proRestrictionStatus.proId, proId))
			.limit(1);
		return rows[0];
	}
 
	/**
	 * Set restriction on/off for a pro. Upserts the row — D1 has no transactions,
	 * so this is a read-then-insert-or-update; a concurrent double-activate simply
	 * lands on the same terminal state (idempotent).
	 */
	async setActive(
		proId: string,
		active: boolean,
		opts: { cohortId?: string | null } = {},
	): Promise<ProRestrictionStatus> {
		const existing = await this.get(proId);
		const now = new Date();
		if (existing) {
			const rows = await this.db
				.update(schema.proRestrictionStatus)
				.set({
					restrictionActive: active,
					activatedAt: active
						? (existing.activatedAt ?? now)
						: existing.activatedAt,
					...(opts.cohortId !== undefined && { cohortId: opts.cohortId }),
					updatedAt: now,
				})
				.where(eq(schema.proRestrictionStatus.proId, proId))
				.returning();
			return rows[0];
		}
		const rows = await this.db
			.insert(schema.proRestrictionStatus)
			.values({
				proId,
				restrictionActive: active,
				activatedAt: active ? now : null,
				cohortId: opts.cohortId ?? null,
				updatedAt: now,
			})
			.returning();
		return rows[0];
	}
 
	async listActive(): Promise<ProRestrictionStatus[]> {
		return this.db
			.select()
			.from(schema.proRestrictionStatus)
			.where(eq(schema.proRestrictionStatus.restrictionActive, true));
	}
}
 
export class RestrictionCohortsDal {
	constructor(private db: DrizzleD1Database<typeof schema>) {}
 
	async create(data: NewRestrictionCohort): Promise<RestrictionCohort> {
		const rows = await this.db
			.insert(schema.restrictionCohorts)
			.values(data)
			.returning();
		return rows[0];
	}
 
	async get(id: string): Promise<RestrictionCohort | undefined> {
		const rows = await this.db
			.select()
			.from(schema.restrictionCohorts)
			.where(eq(schema.restrictionCohorts.id, id))
			.limit(1);
		return rows[0];
	}
 
	async list(): Promise<RestrictionCohort[]> {
		return this.db
			.select()
			.from(schema.restrictionCohorts)
			.orderBy(desc(schema.restrictionCohorts.cohortNumber));
	}
 
	async update(
		id: string,
		patch: Partial<NewRestrictionCohort>,
	): Promise<RestrictionCohort | undefined> {
		const rows = await this.db
			.update(schema.restrictionCohorts)
			.set(patch)
			.where(eq(schema.restrictionCohorts.id, id))
			.returning();
		return rows[0];
	}
}
 
export class PrerequisiteGateChecksDal {
	constructor(private db: DrizzleD1Database<typeof schema>) {}
 
	async create(data: NewPrerequisiteGateCheck): Promise<PrerequisiteGateCheck> {
		const rows = await this.db
			.insert(schema.prerequisiteGateChecks)
			.values(data)
			.returning();
		return rows[0];
	}
 
	async latestForCohort(
		cohortId: string,
	): Promise<PrerequisiteGateCheck | undefined> {
		const rows = await this.db
			.select()
			.from(schema.prerequisiteGateChecks)
			.where(eq(schema.prerequisiteGateChecks.cohortId, cohortId))
			// id tiebreaker: checkedAt has second resolution (unixepoch), so two
			// checks run in the same second would otherwise tie and "latest" could
			// return the older one — caught in live QA when a failing check and a
			// passing re-check landed in the same second.
			.orderBy(
				desc(schema.prerequisiteGateChecks.checkedAt),
				desc(schema.prerequisiteGateChecks.id),
			)
			.limit(1);
		return rows[0];
	}
}