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import type { Database } from "@/lib/db";
import { sortResultsTable } from "@/lib/db/schema";
import type { SortResult, SortResultStatus } from "@/types";
import { generateId } from "@/lib/id";
import { allocateWithRetry } from "../allocateWithRetry";
import { isUniqueViolation } from "../pg-conflict";
export class SortResultRepository {
constructor(private db: Database) {}
// Single INSERT with a caller-supplied number; NO recompute, NO retry. The
// number race is handled by callers (create's wrapper, or the service's
// whole-transaction retry) so the two retry sites share one predicate.
async insertWithNumber(data: {
id?: string;
collectionId: string;
curatorId: string;
name: string;
status: "draft" | "finalized";
number: number;
}): Promise<SortResult> {
const [result] = await this.db
.insert(sortResultsTable)
.values({
id: data.id || generateId("result"),
collectionId: data.collectionId,
curatorId: data.curatorId,
name: data.name,
status: data.status,
number: data.number,
createdAt: new Date(),
updatedAt: new Date(),
finalizedAt: null,
})
.returning();
return this.mapToResult(result);
}
async create(data: {
id?: string;
collectionId: string;
curatorId: string;
name: string;
status: "draft" | "finalized";
}): Promise<SortResult> {
// Auto-allocate MAX+1, recomputing the number EACH attempt, retrying only
// on the UNIQUE(collection_id, number) race. postgres-js autocommits each
// statement here, so a conflicting INSERT can be retried in place. Any
// other unique violation surfaces, not retried.
return allocateWithRetry(async () => {
const number = await this.getNextResultNumber(data.collectionId);
return this.insertWithNumber({ ...data, number });
}, isResultNumberConflict);
}
async findById(id: string): Promise<SortResult | null> {
const [result] = await this.db
.select()
.from(sortResultsTable)
.where(eq(sortResultsTable.id, id));
return result ? this.mapToResult(result) : null;
}
// Read + row-lock (SELECT ... FOR UPDATE) so a concurrent finalize and a
// re-rank/reset serialize on the sort_results row. MUST be called inside a
// transaction (the lock is held until commit); use to re-assert draft status
// in the same tx as the manual-overlay write (finalized-immutability TOCTOU).
async findByIdForUpdate(id: string): Promise<SortResult | null> {
const [result] = await this.db
.select()
.from(sortResultsTable)
.where(eq(sortResultsTable.id, id))
.for("update");
return result ? this.mapToResult(result) : null;
}
async findByCollectionAndNumber(
collectionId: string,
number: number,
): Promise<SortResult | null> {
// sort_results has no deletedAt — filter only by collectionId + number
const [result] = await this.db
.select()
.from(sortResultsTable)
.where(
and(
eq(sortResultsTable.collectionId, collectionId),
eq(sortResultsTable.number, number),
),
);
return result ? this.mapToResult(result) : null;
}
async getNextResultNumber(collectionId: string): Promise<number> {
const [row] = await this.db
.select({ max: sql<number | null>`max(${sortResultsTable.number})` })
.from(sortResultsTable)
.where(eq(sortResultsTable.collectionId, collectionId));
return (row?.max ?? 0) + 1;
}
async findByCollection(collectionId: string): Promise<SortResult[]> {
const results = await this.db
.select()
.from(sortResultsTable)
.where(eq(sortResultsTable.collectionId, collectionId));
return results.map((r) => this.mapToResult(r));
}
async findDraft(collectionId: string, curatorId: string): Promise<SortResult | null> {
const [result] = await this.db
.select()
.from(sortResultsTable)
.where(
and(
eq(sortResultsTable.collectionId, collectionId),
eq(sortResultsTable.curatorId, curatorId),
eq(sortResultsTable.status, "draft"),
),
)
.orderBy(desc(sortResultsTable.createdAt), desc(sortResultsTable.id))
.limit(1);
return result ? this.mapToResult(result) : null;
}
// The curator's open draft for the collection, row-locked. Callers hold the
// (collection, curator) advisory lock, so this is the only draft writer at a time.
// Newest first, so the pick is deterministic.
async findDraftForUpdate(collectionId: string, curatorId: string): Promise<SortResult | null> {
const [row] = await this.db
.select()
.from(sortResultsTable)
.where(
and(
eq(sortResultsTable.collectionId, collectionId),
eq(sortResultsTable.curatorId, curatorId),
eq(sortResultsTable.status, "draft"),
),
)
.orderBy(desc(sortResultsTable.createdAt), desc(sortResultsTable.id))
.limit(1)
.for("update");
return row ? this.mapToResult(row) : null;
}
async findDrafts(collectionId: string, curatorId: string): Promise<SortResult[]> {
const rows = await this.db
.select()
.from(sortResultsTable)
.where(
and(
eq(sortResultsTable.collectionId, collectionId),
eq(sortResultsTable.curatorId, curatorId),
eq(sortResultsTable.status, "draft"),
),
);
return rows.map((r) => this.mapToResult(r));
}
async findBySaveKey(curatorId: string, saveKey: string): Promise<SortResult | null> {
const [row] = await this.db
.select()
.from(sortResultsTable)
.where(and(eq(sortResultsTable.curatorId, curatorId), eq(sortResultsTable.saveKey, saveKey)));
return row ? this.mapToResult(row) : null;
}
// Save-and-share's finalize: name, status, timestamp and the idempotency key in one write.
async markSaved(id: string, name: string, saveKey: string): Promise<SortResult> {
const now = new Date();
const [row] = await this.db
.update(sortResultsTable)
.set({ name, saveKey, status: "finalized", finalizedAt: now, updatedAt: now })
.where(eq(sortResultsTable.id, id))
.returning();
return this.mapToResult(row);
}
async update(id: string, data: Partial<SortResult>): Promise<SortResult> {
const [result] = await this.db
.update(sortResultsTable)
.set({ ...data, updatedAt: new Date() })
.where(eq(sortResultsTable.id, id))
.returning();
return this.mapToResult(result);
}
async delete(id: string): Promise<void> {
await this.db.delete(sortResultsTable).where(eq(sortResultsTable.id, id));
}
async deleteByCollection(collectionId: string): Promise<void> {
await this.db.delete(sortResultsTable).where(eq(sortResultsTable.collectionId, collectionId));
}
// Delete every sort_result belonging to the given curator (across all collections).
// Caller must have already deleted child sort_result_shares and sort_result_items.
// Account-deletion only.
async deleteByCurator(curatorId: string): Promise<void> {
await this.db.delete(sortResultsTable).where(eq(sortResultsTable.curatorId, curatorId));
}
private mapToResult(row: typeof sortResultsTable.$inferSelect): SortResult {
return {
id: row.id,
collectionId: row.collectionId,
curatorId: row.curatorId,
number: row.number,
status: row.status as SortResultStatus,
name: row.name,
createdAt: row.createdAt,
updatedAt: row.updatedAt,
finalizedAt: row.finalizedAt,
};
}
}
export function isResultNumberConflict(error: unknown): boolean {
// Retry ONLY the UNIQUE(collection_id, number) race — any other unique
// violation is a real condition and must surface.
return isUniqueViolation(error, "sort_results_collection_number_unique");
}
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