import { ok, err, type CommandContext } from "@tailor-platform/erp-kit/core";
import { storageLocationLifecycle } from "../db/storageLocation.lifecycle.generated";
import type { Transaction } from "../generated/kysely-tailordb";
import {
  StorageLocationNotFoundError,
  StorageLocationNotInactiveError,
  SiteInactiveError,
} from "../lib/errors.generated";
import type { OrganizationQueries } from "../module";

export interface ReactivateStorageLocationInput {
  id: string;
}

/**
 * Function: reactivateStorageLocation
 *
 * Transitions a storage location from INACTIVE back to ACTIVE status.
 * The parent site must still be in ACTIVE status.
 */
export async function run(
  db: Transaction,
  input: ReactivateStorageLocationInput,
  ctx: CommandContext,
  organizationQueries: Pick<OrganizationQueries, "getSite">,
) {
  const { id } = input;

  // 1. Check storage location exists
  const location = await db
    .selectFrom("StorageLocation")
    .selectAll()
    .where("id", "=", id)
    .forUpdate()
    .executeTakeFirst();

  if (!location) {
    return err(new StorageLocationNotFoundError(id));
  }

  // 2. Check transition is allowed
  const nextStatus = storageLocationLifecycle.tryTransition(location.status, "reactivate");
  if (!nextStatus) {
    return err(new StorageLocationNotInactiveError(id));
  }

  // 3. Validate parent site is ACTIVE
  const { site } = (await organizationQueries.getSite(db, { id: location.siteId }, ctx)).value;

  if (site?.status !== "ACTIVE") {
    return err(new SiteInactiveError(location.siteId));
  }

  // 4. Update status to ACTIVE
  const reactivatedLocation = await db
    .updateTable("StorageLocation")
    .set({ status: nextStatus })
    .where("id", "=", id)
    .returningAll()
    .executeTakeFirstOrThrow();

  return ok({ storageLocation: reactivatedLocation });
}