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

/**
 * Cancel a draft Inbound Shipment (DRAFT → CANCELLED).
 *
 * In erp-kit 0.45 the receipt is an InboundShipment; cancellation goes through
 * the inbound-shipment lifecycle's `cancel` transition, which only DRAFT
 * allows — POSTED is terminal. A missing row and a non-DRAFT receipt both
 * surface as INBOUND_SHIPMENT_INVALID_STATUS. The resolver name stays
 * `cancelInboundShipment` for frontend compatibility.
 */
export default createResolver({
  name: "cancelInboundShipment",
  operation: "mutation",
  input: {
    id: t.string().description("Inbound shipment (InboundShipment) ID"),
  },
  body: async (context) => {
    const ctx = createContext(context);
    const db = getDB("main-db");
    return db
      .transaction()
      .execute(async (trx) => {
        const result = await inboundShipmentModulesExport.commands.cancelInboundShipment(
          trx,
          { id: context.input.id },
          ctx,
        );

        if (!result.ok) {
          switch (result.error.code) {
            case "INBOUND_SHIPMENT_INVALID_STATUS":
              throw new DomainError(
                `Inbound shipment cannot be cancelled — it does not exist or is not in DRAFT status: ${context.input.id}`,
              );
            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;
          }
        }

        return {
          id: result.value.inboundShipmentId,
          // A successful transition implies the target status.
          status: "CANCELLED",
        };
      })
      .catch((err: unknown) => {
        if (err instanceof DomainError) throw err;
        throw new Error("Failed to cancel the inbound shipment", { cause: err });
      });
  },
  output: t
    .object({
      id: t.string().description("Inbound shipment (InboundShipment) ID"),
      status: t.string().description("New inbound shipment status"),
    })
    .description("CancelInboundShipment response"),
});