import { EimsConfig, EimsInvoiceConfig } from "../../config/eims.config";

/**
 * Fixtures shared by the EIMS specs.
 *
 * Deliberately not a `.spec.ts`: importing fixtures from a spec file makes jest execute that
 * file's `describe` blocks inside every importing suite, so the same tests run — and report —
 * twice.
 */

export const EIMS_SYSTEM_NUMBER = "B0360154BA";
export const EIMS_SYSTEM_TYPE = "SYS";

export const eimsInvoiceConfig = (over: Partial<EimsInvoiceConfig> = {}): EimsInvoiceConfig => ({
  sellerLegalName: "Ethio-Djibouti Railway S.C.",
  sellerVatNumber: "0000000000",
  sellerPhone: "0911223344",
  sellerEmail: "finance@example.et",
  sellerRegion: "13",
  sellerWereda: "574",
  sellerCity: null,
  sellerSubCity: null,
  sellerHouseNumber: null,
  sellerLocality: null,
  taxCode: "VAT15",
  taxRatePercent: 15,
  exciseTaxValue: 0,
  incomeWithholdValue: 0,
  transactionWithholdValue: 0,
  transactionType: "B2B",
  natureOfSupplies: "Service",
  paymentMode: "CASH",
  paymentTerm: "IMMIDIATE",
  unitDefault: "PCS",
  buyerCountryCode: null,
  cashierName: null,
  salesPersonName: null,
  ...over,
});

export const eimsConfig = (over: Partial<EimsConfig> = {}): EimsConfig => ({
  enabled: true,
  baseUrl: "https://core.mor.gov.et",
  clientId: "cid",
  clientSecret: "super-secret-value",
  apiKey: "super-secret-apikey",
  tin: "0000034558",
  systemNumber: EIMS_SYSTEM_NUMBER,
  systemType: EIMS_SYSTEM_TYPE,
  privateKeyPath: "/dev/null",
  certificatePath: "/dev/null",
  httpTimeoutMs: 30_000,
  tokenSkewMs: 45_000,
  invoice: eimsInvoiceConfig(),
  ...over,
});

/**
 * A structurally real access token. MoR stamps the source-system identity into the JWT payload and
 * `EimsAuthService` reads it from there; only the payload segment is meaningful, since the token is
 * never verified locally — it is MoR's, signed with MoR's key.
 *
 * Pass a claim as `undefined` to omit it (spreading beats `delete`, which the defaults would undo).
 */
export const eimsToken = (claims: Record<string, unknown> = {}): string => {
  const payload = { systemNumber: EIMS_SYSTEM_NUMBER, systemType: EIMS_SYSTEM_TYPE, ...claims };
  for (const [key, value] of Object.entries(payload)) {
    if (value === undefined) delete (payload as Record<string, unknown>)[key];
  }
  return [
    "eyJhbGciOiJSUzI1NiJ9",
    Buffer.from(JSON.stringify(payload)).toString("base64url"),
    "signature",
  ].join(".");
};