feat: 完成P6-P8后端能力与P9路由重构（V1-V2,D1,D3,B1-B2,B4,I1-I4,P9A2-P9A3）

server/src/services/verification/index.js

@@ -0,0 +1,37 @@
+const { runMockVerification } = require("./mock");
+const { runTaxVerification } = require("./tax");
+
+function getProvider(config) {
+  return String(config.verificationProvider ?? "mock").trim().toLowerCase();
+}
+
+function isVerificationEnabled(config) {
+  return Boolean(config.invoiceVerificationEnabled);
+}
+
+async function verifyInvoiceByProvider({ config, invoice }) {
+  const provider = getProvider(config);
+
+  if (provider === "mock") {
+    return runMockVerification({ invoice });
+  }
+
+  if (provider === "tax") {
+    return runTaxVerification({ config, invoice });
+  }
+
+  return {
+    status: "error",
+    resultCode: "provider_unsupported",
+    resultMessage: `Unsupported verification provider: ${provider}`,
+    payload: {
+      provider,
+    },
+  };
+}
+
+module.exports = {
+  getProvider,
+  isVerificationEnabled,
+  verifyInvoiceByProvider,
+};

server/src/services/verification/mock.js

@@ -0,0 +1,59 @@
+function normalizeAmount(value) {
+  if (value == null) {
+    return null;
+  }
+
+  const numberValue = Number(value);
+  if (!Number.isFinite(numberValue)) {
+    return null;
+  }
+
+  return numberValue.toFixed(2);
+}
+
+async function runMockVerification({ invoice }) {
+  const remarks = String(invoice.remarks ?? "").toLowerCase();
+  const invoiceCode = String(invoice.invoice_code ?? "").toUpperCase();
+  const invoiceNumber = String(invoice.invoice_number ?? "").toUpperCase();
+
+  if (remarks.includes("verify-error") || invoiceNumber.includes("ERR")) {
+    return {
+      status: "error",
+      resultCode: "mock_transport_error",
+      resultMessage: "mock provider transport error",
+      payload: {
+        provider: "mock",
+        marker: "verify-error",
+      },
+    };
+  }
+
+  if (remarks.includes("verify-fail") || invoiceCode.includes("FAIL") || invoiceNumber.includes("FAIL")) {
+    return {
+      status: "failed",
+      resultCode: "invoice_mismatch",
+      resultMessage: "invoice metadata mismatch",
+      payload: {
+        provider: "mock",
+        matched: false,
+      },
+    };
+  }
+
+  return {
+    status: "passed",
+    resultCode: "verified",
+    resultMessage: "invoice verified",
+    payload: {
+      provider: "mock",
+      matched: true,
+      invoiceCode: invoice.invoice_code ?? null,
+      invoiceNumber: invoice.invoice_number ?? null,
+      totalAmount: normalizeAmount(invoice.total_amount),
+    },
+  };
+}
+
+module.exports = {
+  runMockVerification,
+};

server/src/services/verification/tax.js

@@ -0,0 +1,27 @@
+async function runTaxVerification({ config, invoice }) {
+  if (!config.invoiceVerificationEnabled) {
+    return {
+      status: "error",
+      resultCode: "verification_disabled",
+      resultMessage: "invoice verification disabled",
+      payload: {
+        provider: "tax",
+      },
+    };
+  }
+
+  return {
+    status: "error",
+    resultCode: "tax_provider_not_configured",
+    resultMessage: "tax provider is not configured in current environment",
+    payload: {
+      provider: "tax",
+      invoiceCode: invoice.invoice_code ?? null,
+      invoiceNumber: invoice.invoice_number ?? null,
+    },
+  };
+}
+
+module.exports = {
+  runTaxVerification,
+};