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";

export default createResolver({
  name: "setItemValuationPolicy",
  operation: "mutation",
  input: {
    itemId: t.string().description("Item ID"),
    companyId: t.string().description("Company the assignment applies to"),
    valuationPolicyId: t.string().description("Valuation policy ID (must belong to the company)"),
  },
  body: async (context) => {
    const ctx = createContext(context);
    const db = getDB("main-db");

    return db
      .transaction()
      .execute(async (trx) => {
        const result = await invModulesExport.commands.setItemValuationPolicy(
          trx,
          {
            itemId: context.input.itemId,
            companyId: context.input.companyId,
            valuationPolicyId: context.input.valuationPolicyId,
          },
          ctx,
        );

        if (!result.ok) {
          switch (result.error.code) {
            case "INVENTORY_ITEM_NOT_FOUND":
              throw new DomainError(`Item not found: ${context.input.itemId}`);
            case "INVENTORY_VALUATION_POLICY_NOT_FOUND":
              throw new DomainError(
                `Valuation policy not found: ${context.input.valuationPolicyId}`,
              );
            case "INVENTORY_VALUATION_POLICY_COMPANY_MISMATCH":
              throw new DomainError("The valuation policy belongs to a different company");
            case "INVENTORY_ITEM_VALUATION_POLICY_CHANGE_NOT_ALLOWED":
              throw new DomainError(
                "The valuation policy cannot be changed once the item has inventory ledger history in the company",
              );
            case "INVENTORY_SITE_NOT_FOUND":
              throw new DomainError("A referenced site was not found.");
            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.itemValuation.id };
      })
      .catch((err: unknown) => {
        if (err instanceof DomainError) throw err;
        throw new Error("Failed to set the item valuation policy", { cause: err });
      });
  },
  output: t
    .object({
      id: t.string().description("ItemValuation ID"),
    })
    .description("Item valuation policy assignment"),
});