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";

/**
 * confirmStockAdjustment — approve a SUBMITTED adjustment (SUBMITTED →
 * CONFIRMED). This is where the adjustment is actually applied: the native
 * command posts inventory ledger entries and updates StockLevel rows for every
 * line. Confirmation can fail if there is not enough stock to decrease / scrap
 * / block.
 */
export default createResolver({
  name: "confirmStockAdjustment",
  operation: "mutation",
  input: {
    id: t.string().description("Stock adjustment ID"),
  },
  body: async (context) => {
    const ctx = createContext(context);
    const db = getDB("main-db");
    return db
      .transaction()
      .execute(async (trx) => {
        const result = await invModulesExport.commands.confirmStockAdjustment(
          trx,
          { id: context.input.id },
          ctx,
        );

        if (!result.ok) {
          switch (result.error.code) {
            case "INVENTORY_STOCK_ADJUSTMENT_NOT_FOUND":
              throw new DomainError(`Stock adjustment not found: ${context.input.id}`);
            case "INVENTORY_INVALID_STATUS":
              throw new DomainError(
                `Stock adjustment cannot be confirmed in its current status: ${context.input.id}`,
              );
            case "INVENTORY_INSUFFICIENT_STOCK":
              throw new DomainError(
                `Insufficient stock to apply the adjustment: ${result.error.message}`,
              );
            case "INVENTORY_INVENTORY_SUPPLY_PLAN_NOT_FOUND":
              throw new DomainError("A related supply plan was not found.");
            case "INVENTORY_SUPPLY_PLAN_NOT_OPEN":
              throw new DomainError("A related supply plan is not open.");
            case "INVENTORY_STOCK_RESERVATION_NOT_FOUND":
              throw new DomainError("A related stock reservation was not found.");
            case "INVENTORY_STOCK_RESERVATION_NOT_OPEN":
              throw new DomainError("A related stock reservation is not open.");
            case "INVENTORY_ACCOUNTING_PERIOD_NOT_FOUND":
              throw new DomainError("No accounting period covers the posting date.");
            case "INVENTORY_JOURNAL_ENTRY_CREATE_FAILED":
              throw new DomainError("Failed to create the inventory journal entry.");
            case "INVENTORY_JOURNAL_ENTRY_POST_FAILED":
              throw new DomainError("Failed to post the inventory journal entry.");
            case "INVENTORY_CONSUMPTION_TREATMENT_NOT_SUPPORTED":
              throw new DomainError("An item's consumption treatment is not supported.");
            case "INVENTORY_UNIT_COST_REQUIRED":
              throw new DomainError("A unit cost is required to apply the adjustment.");
            case "INVENTORY_AVERAGE_COST_NOT_FOUND":
              throw new DomainError("No average cost is available for an item.");
            case "INVENTORY_FIFO_COST_NOT_FOUND":
              throw new DomainError("No FIFO cost layer is available for an item.");
            case "INVENTORY_STANDARD_COST_NOT_FOUND":
              throw new DomainError("No standard cost is defined for an item.");
            case "INVENTORY_COSTING_EVENT_NOT_SUPPORTED":
              throw new DomainError(
                "The costing event is not supported by an item's valuation policy.",
              );
            case "INVENTORY_SITE_NOT_FOUND":
              throw new DomainError("A referenced site was not found.");
            case "INVENTORY_DEFAULT_VALUATION_POLICY_NOT_FOUND":
              throw new DomainError("No default valuation policy is defined for the company.");
            case "INVENTORY_INVALID_SUPPLY_PLAN_QUANTITIES":
              throw new DomainError("Supply plan quantities are invalid.");
            case "INVENTORY_INVALID_RESERVATION_QUANTITIES":
              throw new DomainError("Reservation quantities are invalid.");
            case "INVENTORY_EMPTY_MOVEMENT_LINES":
              throw new DomainError("The adjustment has no movement lines.");
            case "INVENTORY_INVALID_QUANTITY":
              throw new DomainError("A movement line quantity is invalid.");
            case "INVENTORY_INVALID_UNIT_COST":
              throw new DomainError("A movement line unit cost is invalid.");
            case "INVENTORY_ITEM_NOT_FOUND":
              throw new DomainError("A referenced item was not found.");
            case "INVENTORY_STORAGE_LOCATION_NOT_FOUND":
              throw new DomainError("A referenced storage location 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.stockAdjustment.id,
          status: result.value.stockAdjustment.status,
        };
      })
      .catch((err: unknown) => {
        if (err instanceof DomainError) throw err;
        throw new Error("Failed to confirm the stock adjustment", { cause: err });
      });
  },
  output: t
    .object({
      id: t.string().description("Stock adjustment ID"),
      status: t.string().description("New document status (CONFIRMED)"),
    })
    .description("ConfirmStockAdjustment response"),
});