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

/**
 * registerAccountReceivableDocument — accept a DRAFT customer invoice for
 * posting.
 *
 * Unlike the AP side there is no 3-way matching: registration validates that
 * the document has a non-empty due schedule summing to the total and moves it
 * DRAFT -> REGISTERED. For SALES_ORDER-sourced lines the linked sales order's
 * billing status is recalculated from the registered invoice quantities in the
 * same transaction. This is the AR mirror of
 * `registerAccountPayableDocument` (minus holds).
 */
export default createResolver({
  name: "registerAccountReceivableDocument",
  operation: "mutation",
  input: {
    id: t.string().description("Account receivable document ID"),
  },
  body: async (context) => {
    const ctx = createContext(context);
    const db = getDB("main-db");
    return db
      .transaction()
      .execute(async (trx) => {
        const result = await arModulesExport.commands.registerAccountReceivableDocument(
          trx,
          { id: context.input.id },
          ctx,
        );

        if (!result.ok) {
          switch (result.error.code) {
            case "ACCOUNT_RECEIVABLE_DOCUMENT_NOT_FOUND":
              throw new DomainError(`Account receivable document not found: ${context.input.id}`);
            case "ACCOUNT_RECEIVABLE_INVALID_DOCUMENT_STATUS":
              throw new DomainError(`Only DRAFT invoices can be registered: ${context.input.id}`);
            case "ACCOUNT_RECEIVABLE_DUE_SCHEDULE_INVALID":
              throw new DomainError(`The invoice due schedule is invalid or empty.`);
            case "ACCOUNT_RECEIVABLE_LINE_TOTAL_MISMATCH":
              throw new DomainError(`Line/distribution totals do not reconcile.`);
            case "ACCOUNT_RECEIVABLE_MINIMUM_LINES_NOT_MET":
              throw new DomainError(
                `The invoice must have at least one line with one distribution.`,
              );
            case "ACCOUNT_RECEIVABLE_SALES_ORDER_BILLING_SYNC_FAILED":
              throw new DomainError(
                `Failed to sync sales order billing status: ${result.error.message}`,
              );
            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.accountReceivableDocument.id,
          status: result.value.accountReceivableDocument.status,
        };
      })
      .catch((err: unknown) => {
        if (err instanceof DomainError) throw err;
        throw new Error("Failed to register the account receivable document", { cause: err });
      });
  },
  output: t
    .object({
      id: t.string().description("Account receivable document ID"),
      status: t.string().description("New document status (REGISTERED)"),
    })
    .description("RegisterAccountReceivableDocument response"),
});