eims integration master test complete

apps/edr-freight-api/src/modules/eims/eims-invoice-context.ts

@@ -59,6 +59,47 @@ export function assertEimsInvoiceConfig(config: EimsConfig): void {
   }
 
   assertSellerFormats(config.invoice);
+  assertChargeTypeOverrides(config.invoice);
+}
+
+/**
+ * Per-`chargeType` tax overrides must be internally consistent before anything is filed:
+ * `EIMS_TAX_CODE_BY_CHARGE_TYPE` and `EIMS_TAX_RATE_BY_CHARGE_TYPE` must name the same charge
+ * types (a code with no rate, or vice versa, is a half-finished override), and every rate/excise/
+ * discount value must parse as a number — checked once here rather than once per line at
+ * registration time.
+ */
+function assertChargeTypeOverrides(invoice: EimsConfig["invoice"]): void {
+  const codeKeys = Object.keys(invoice.taxCodeByChargeType);
+  const rateKeys = Object.keys(invoice.taxRateByChargeType);
+  const mismatched = [...new Set([...codeKeys, ...rateKeys])].filter(
+    (k) => !(codeKeys.includes(k) && rateKeys.includes(k)),
+  );
+  if (mismatched.length > 0) {
+    throw new BadRequestException({
+      code: "EIMS_INVOICE_CONFIG_INVALID",
+      message:
+        `EIMS_TAX_CODE_BY_CHARGE_TYPE and EIMS_TAX_RATE_BY_CHARGE_TYPE must list the same charge ` +
+        `types; mismatched: ${mismatched.join(", ")}`,
+    });
+  }
+
+  const numericMaps: { env: string; map: Record<string, string> }[] = [
+    { env: "EIMS_TAX_RATE_BY_CHARGE_TYPE", map: invoice.taxRateByChargeType },
+    { env: "EIMS_EXCISE_BY_CHARGE_TYPE", map: invoice.exciseByChargeType },
+    { env: "EIMS_DISCOUNT_BY_CHARGE_TYPE", map: invoice.discountByChargeType },
+  ];
+  const badNumbers = numericMaps.flatMap(({ env, map }) =>
+    Object.entries(map)
+      .filter(([, value]) => !Number.isFinite(Number(value)))
+      .map(([chargeType]) => `${env}[${chargeType}]`),
+  );
+  if (badNumbers.length > 0) {
+    throw new BadRequestException({
+      code: "EIMS_INVOICE_CONFIG_INVALID",
+      message: `EIMS charge-type overrides must be numbers: ${badNumbers.join(", ")}`,
+    });
+  }
 }
 
 /**
@@ -135,9 +176,25 @@ export function buildEimsContext(config: EimsConfig, input: EimsContextInput): E
     salesPersonName: invoice.salesPersonName,
     transactionType: invoice.transactionType,
     payment: { mode: invoice.paymentMode, term: invoice.paymentTerm },
-    // One treatment for every line today. The mapper resolves tax per line, so a future
-    // charge-type-specific rule slots in here without touching the mapper.
-    taxForLine: (_line: EimsMapperLine) => ({ code: taxCode, ratePercent, exciseTaxValue }),
+    // Per-`chargeType` override when one is configured (validated symmetric in
+    // assertChargeTypeOverrides), else the single invoice-wide default.
+    taxForLine: (line: EimsMapperLine) => {
+      const { chargeType } = line;
+      const code = invoice.taxCodeByChargeType[chargeType] ?? taxCode;
+      const rate =
+        chargeType in invoice.taxRateByChargeType
+          ? Number(invoice.taxRateByChargeType[chargeType])
+          : ratePercent;
+      const excise =
+        chargeType in invoice.exciseByChargeType
+          ? Number(invoice.exciseByChargeType[chargeType])
+          : exciseTaxValue;
+      const discount =
+        chargeType in invoice.discountByChargeType
+          ? Number(invoice.discountByChargeType[chargeType])
+          : 0;
+      return { code, ratePercent: rate, exciseTaxValue: excise, discount };
+    },
     natureOfSupplies: invoice.natureOfSupplies,
     unitDefault: invoice.unitDefault,
     incomeWithholdValue: invoice.incomeWithholdValue!,
@@ -145,6 +202,9 @@ export function buildEimsContext(config: EimsConfig, input: EimsContextInput): E
     buyerCountryCode: invoice.buyerCountryCode,
     buyerRegionCodes: invoice.buyerRegionCodes,
     buyerWeredaCodes: invoice.buyerWeredaCodes,
+    // TEMPORARY — see EimsInvoiceConfig.buyerIdType.
+    buyerIdType: invoice.buyerIdType,
+    buyerIdNumber: invoice.buyerIdNumber,
     exchangeRate: input.exchangeRate ?? null,
   };
 }