import { createContext, DomainError } from "@tailor-platform/erp-kit/app";
import { createResolver, t } from "@tailor-platform/sdk";
import { getDB } from "@/generated/kysely-tailordb";
import { invModulesExport } from "@/modules";

/**
 * receiveTransferOrder — app-layer "receive the whole shipment" action.
 *
 * erp-kit's native `receiveTransferOrder` is line-explicit: it takes
 * `{ id, effectiveDate, lines: [{ transferOrderLineId, transitStorageLocationId,
 * destinationStorageLocationId, quantity }] }`. The UI exposes a single
 * "Receive" click, so this resolver derives the line set (the full
 * `shippedQuantity − receivedQuantity` remainder per line) and resolves the
 * transit/destination storage location as the first ACTIVE StorageLocation
 * under the TO's destination site, then re-reads the header for the response.
 */
export default createResolver({
  name: "receiveTransferOrder",
  operation: "mutation",
  input: {
    id: t.string().description("Transfer order ID"),
  },
  body: async (context) => {
    const ctx = createContext(context);
    const db = getDB("main-db");
    return db
      .transaction()
      .execute(async (trx) => {
        const transferOrder = await trx
          .selectFrom("TransferOrder")
          .select(["destinationSiteId"])
          .where("id", "=", context.input.id)
          .executeTakeFirst();
        if (!transferOrder) {
          throw new DomainError(`Transfer order not found: ${context.input.id}`);
        }

        const destinationLocation = await trx
          .selectFrom("StorageLocation")
          .select(["id"])
          .where("siteId", "=", transferOrder.destinationSiteId)
          .where("status", "=", "ACTIVE")
          .limit(1)
          .executeTakeFirst();
        if (!destinationLocation) {
          throw new DomainError(
            `No ACTIVE storage location found for the destination site — cannot receive the transfer order.`,
          );
        }

        const lines = await trx
          .selectFrom("TransferOrderLine")
          .select(["id", "shippedQuantity", "receivedQuantity"])
          .where("transferOrderId", "=", context.input.id)
          .execute();

        const receiveLines = lines
          .map((line) => ({
            transferOrderLineId: line.id,
            transitStorageLocationId: destinationLocation.id,
            destinationStorageLocationId: destinationLocation.id,
            quantity: String(Number(line.shippedQuantity) - Number(line.receivedQuantity)),
          }))
          .filter((line) => Number(line.quantity) > 0);

        const result = await invModulesExport.commands.receiveTransferOrder(
          trx,
          {
            id: context.input.id,
            effectiveDate: new Date(),
            lines: receiveLines,
          },
          ctx,
        );

        if (!result.ok) {
          switch (result.error.code) {
            case "INVENTORY_TRANSFER_ORDER_NOT_FOUND":
              throw new DomainError(`Transfer order not found: ${context.input.id}`);
            case "INVENTORY_INVALID_STATE_TRANSITION":
              throw new DomainError(
                `Transfer order cannot be received in its current status: ${context.input.id}`,
              );
            case "INVENTORY_EMPTY_TRANSFER_LINES":
              throw new DomainError(
                "Nothing to receive — the transfer order has no shipped quantity remaining",
              );
            case "INVENTORY_INVALID_QUANTITY":
              throw new DomainError(`Invalid receive quantity: ${result.error.message}`);
            case "INVENTORY_INVALID_TRANSFER_LOCATIONS":
              throw new DomainError(
                `Invalid transit/destination locations: ${result.error.message}`,
              );
            case "INVENTORY_STORAGE_LOCATION_NOT_FOUND":
              throw new DomainError(`Storage location not found: ${result.error.message}`);
            case "INVENTORY_INSUFFICIENT_STOCK":
              throw new DomainError(`Insufficient in-transit stock: ${result.error.message}`);
            case "INVENTORY_TRANSFER_ORDER_LINE_NOT_FOUND":
              throw new DomainError(`Transfer order line not found: ${result.error.message}`);
            case "INVENTORY_ITEM_NOT_FOUND":
              throw new DomainError("Item not found");
            case "INVENTORY_SITE_NOT_FOUND":
              throw new DomainError("Site not found");
            case "INVENTORY_EMPTY_MOVEMENT_LINES":
              throw new DomainError("The receipt has no movement lines");
            case "INVENTORY_INVALID_UNIT_COST":
              throw new DomainError("Invalid unit cost");
            case "INVENTORY_UNIT_COST_REQUIRED":
              throw new DomainError("A unit cost is required to receive this transfer order");
            case "INVENTORY_ACCOUNTING_PERIOD_NOT_FOUND":
              throw new DomainError("No accounting period covers the receipt date");
            case "INVENTORY_JOURNAL_ENTRY_CREATE_FAILED":
              throw new DomainError("Failed to create the journal entry for this receipt");
            case "INVENTORY_JOURNAL_ENTRY_POST_FAILED":
              throw new DomainError("Failed to post the journal entry for this receipt");
            case "INVENTORY_INVENTORY_SUPPLY_PLAN_NOT_FOUND":
              throw new DomainError("Inventory supply plan not found");
            case "INVENTORY_SUPPLY_PLAN_NOT_OPEN":
              throw new DomainError("The inventory supply plan is not open");
            case "INVENTORY_INVALID_SUPPLY_PLAN_QUANTITIES":
              throw new DomainError("Invalid supply plan quantities");
            case "INVENTORY_STOCK_RESERVATION_NOT_FOUND":
              throw new DomainError("Stock reservation not found");
            case "INVENTORY_STOCK_RESERVATION_NOT_OPEN":
              throw new DomainError("The stock reservation is not open");
            case "INVENTORY_INVALID_RESERVATION_QUANTITIES":
              throw new DomainError("Invalid reservation quantities");
            case "INVENTORY_DEFAULT_VALUATION_POLICY_NOT_FOUND":
              throw new DomainError("No default valuation policy is configured for the company");
            case "INVENTORY_AVERAGE_COST_NOT_FOUND":
              throw new DomainError(
                "No average cost is available for an item on this transfer order",
              );
            case "INVENTORY_FIFO_COST_NOT_FOUND":
              throw new DomainError("No FIFO cost is available for an item on this transfer order");
            case "INVENTORY_STANDARD_COST_NOT_FOUND":
              throw new DomainError(
                "No standard cost is published for an item on this transfer order",
              );
            case "INVENTORY_COSTING_EVENT_NOT_SUPPORTED":
              throw new DomainError("The costing event is not supported");
            case "INVENTORY_CONSUMPTION_TREATMENT_NOT_SUPPORTED":
              throw new DomainError("The item's consumption treatment is not supported");
            case "UNAUTHENTICATED":
              throw new DomainError("Authentication is required");
            case "INSUFFICIENT_PERMISSION":
              throw new DomainError("You do not have permission to perform this action");
            default:
              throw result.error satisfies never;
          }
        }

        // Native receive returns the receipt `inventoryExecution`, not the TO
        // header — re-read the header for the response.
        const header = await trx
          .selectFrom("TransferOrder")
          .select(["id", "status"])
          .where("id", "=", context.input.id)
          .executeTakeFirstOrThrow();

        return { id: header.id, status: header.status };
      })
      .catch((err: unknown) => {
        if (err instanceof DomainError) throw err;
        throw new Error("Failed to receive the transfer order", { cause: err });
      });
  },
  output: t
    .object({
      id: t.string().description("Transfer order ID"),
      status: t.string().description("New document status"),
    })
    .description("ReceiveTransferOrder response"),
});