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import type { Database } from "@/lib/db";
import { sortResultItemsTable, sortResultsTable } from "@/lib/db/schema";
import type { SortResultItem, RankBucket, UsageResult } from "@/types";
import { generateId } from "@/lib/id";
export type NewSortResultItem = {
sortResultId: string;
itemId: string;
computedRank: number;
computedBucket: RankBucket;
manualRank?: number | null;
usage?: "uses" | "not_uses" | null;
};
export class SortResultItemRepository {
constructor(private db: Database) {}
async create(data: {
id?: string;
sortResultId: string;
itemId: string;
computedRank: number;
computedBucket: "top" | "high" | "medium" | "low";
// Epic S: usage standing stamped by the materialization step (deriveUsage's
// typed output guards the value). Absent/undefined → NULL ("unknown").
usage?: "uses" | "not_uses" | null;
}): Promise<SortResultItem> {
const id = data.id || generateId("sri");
const [item] = await this.db
.insert(sortResultItemsTable)
.values({
id,
sortResultId: data.sortResultId,
itemId: data.itemId,
computedRank: data.computedRank,
computedBucket: data.computedBucket,
manualRank: null,
manualBucket: null,
usage: data.usage ?? null,
createdAt: new Date(),
updatedAt: new Date(),
})
.returning();
return this.mapToResultItem(item);
}
// One INSERT for a whole materialization (the per-row loop held the curator lock N round trips).
// 10 bind params per row against Postgres's 65,535 cap: fine up to ~6,553 rows per call.
async createMany(rows: NewSortResultItem[]): Promise<void> {
if (rows.length === 0) return;
const now = new Date();
await this.db
.insert(sortResultItemsTable)
.values(
rows.map((r) => ({
id: generateId("sri"),
sortResultId: r.sortResultId,
itemId: r.itemId,
computedRank: r.computedRank,
computedBucket: r.computedBucket,
manualRank: r.manualRank ?? null,
manualBucket: null,
usage: r.usage ?? null,
createdAt: now,
updatedAt: now,
})),
);
}
async findById(id: string): Promise<SortResultItem | null> {
const [item] = await this.db
.select()
.from(sortResultItemsTable)
.where(eq(sortResultItemsTable.id, id));
return item ? this.mapToResultItem(item) : null;
}
async findByResult(sortResultId: string): Promise<SortResultItem[]> {
const items = await this.db
.select()
.from(sortResultItemsTable)
.where(eq(sortResultItemsTable.sortResultId, sortResultId));
return items.map((i) => this.mapToResultItem(i));
}
async findByResultAndItem(sortResultId: string, itemId: string): Promise<SortResultItem | null> {
const [row] = await this.db
.select()
.from(sortResultItemsTable)
.where(and(eq(sortResultItemsTable.sortResultId, sortResultId), eq(sortResultItemsTable.itemId, itemId)));
return row ? this.mapToResultItem(row) : null;
}
async update(id: string, data: Partial<SortResultItem>): Promise<SortResultItem> {
const [item] = await this.db
.update(sortResultItemsTable)
.set({
...data,
updatedAt: new Date(),
})
.where(eq(sortResultItemsTable.id, id))
.returning();
return this.mapToResultItem(item);
}
async delete(id: string): Promise<void> {
await this.db.delete(sortResultItemsTable).where(eq(sortResultItemsTable.id, id));
}
async deleteByResult(sortResultId: string): Promise<void> {
await this.db
.delete(sortResultItemsTable)
.where(eq(sortResultItemsTable.sortResultId, sortResultId));
}
// Delete every result-item of this collection's results (result-items have no
// collection_id — scope via the parent sort_results). Purge-only.
async deleteByCollection(collectionId: string): Promise<void> {
await this.db.delete(sortResultItemsTable).where(
inArray(
sortResultItemsTable.sortResultId,
this.db
.select({ id: sortResultsTable.id })
.from(sortResultsTable)
.where(eq(sortResultsTable.collectionId, collectionId)),
),
);
}
// Delete every result-item whose parent sort_result belongs to the given curator.
// Child-first prerequisite for deleteByCurator on sort_results. Account-deletion only.
async deleteByCurator(curatorId: string): Promise<void> {
await this.db.delete(sortResultItemsTable).where(
inArray(
sortResultItemsTable.sortResultId,
this.db
.select({ id: sortResultsTable.id })
.from(sortResultsTable)
.where(eq(sortResultsTable.curatorId, curatorId)),
),
);
}
// True iff ANY sort_result_item references the item (any result, any status).
// The purge 409 guard. LIMIT 1 — existence only.
async existsByItem(itemId: string): Promise<boolean> {
const [row] = await this.db
.select({ id: sortResultItemsTable.id })
.from(sortResultItemsTable)
.where(eq(sortResultItemsTable.itemId, itemId))
.limit(1);
return row != null;
}
// Delete the item's result-items that belong to DRAFT results; returns the
// affected-row count (postgres-js rowCount). Owner-only purge-prep — finalized
// results are never matched. Mirrors: DELETE ... WHERE item_id=$1 AND
// sort_result_id IN (SELECT id FROM sort_results WHERE status='draft').
async deleteByItemInDraftResults(itemId: string): Promise<number> {
// RETURNING ids and counting them is driver-agnostic (postgres-js exposes
// affected-row count inconsistently across the drizzle delete result shape).
const deleted = await this.db
.delete(sortResultItemsTable)
.where(
and(
eq(sortResultItemsTable.itemId, itemId),
inArray(
sortResultItemsTable.sortResultId,
this.db
.select({ id: sortResultsTable.id })
.from(sortResultsTable)
.where(eq(sortResultsTable.status, "draft")),
),
),
)
.returning({ id: sortResultItemsTable.id });
return deleted.length;
}
// Count the item's result-items whose parent result is FINALIZED.
async countByItemInFinalizedResults(itemId: string): Promise<number> {
const [row] = await this.db
.select({ n: count() })
.from(sortResultItemsTable)
.innerJoin(
sortResultsTable,
eq(sortResultItemsTable.sortResultId, sortResultsTable.id),
)
.where(
and(
eq(sortResultItemsTable.itemId, itemId),
eq(sortResultsTable.status, "finalized"),
),
);
return row?.n ?? 0;
}
private mapToResultItem(row: typeof sortResultItemsTable.$inferSelect): SortResultItem {
return {
id: row.id,
sortResultId: row.sortResultId,
itemId: row.itemId,
computedRank: row.computedRank,
computedBucket: row.computedBucket as RankBucket,
manualRank: row.manualRank,
manualBucket: row.manualBucket as RankBucket | null,
usage: row.usage as UsageResult | null,
createdAt: row.createdAt,
updatedAt: row.updatedAt,
};
}
}
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