Build fixes, email preview system

src/lib/email-utils.ts

@@ -0,0 +1,84 @@
+import { generateInvoiceEmailTemplate } from "./email-templates";
+
+// Simple test utility to verify the email template works
+export function testEmailTemplate() {
+  const mockInvoice = {
+    invoiceNumber: "INV-001",
+    issueDate: new Date(),
+    dueDate: new Date(Date.now() + 30 * 24 * 60 * 60 * 1000), // 30 days from now
+    status: "draft",
+    totalAmount: 1000,
+    taxRate: 8.5,
+    notes: null,
+    client: {
+      name: "Test Client",
+      email: "client@example.com",
+    },
+    business: {
+      name: "Test Business",
+      email: "business@example.com",
+      phone: "(555) 123-4567",
+      addressLine1: "123 Business St",
+      addressLine2: null,
+      city: "Business City",
+      state: "CA",
+      postalCode: "12345",
+      country: "United States",
+    },
+    items: [
+      {
+        date: new Date(),
+        description: "Development Services",
+        hours: 10,
+        rate: 100,
+        amount: 1000,
+      },
+    ],
+  };
+
+  try {
+    const template = generateInvoiceEmailTemplate({
+      invoice: mockInvoice,
+      userName: "John Doe",
+      userEmail: "john@example.com",
+    });
+
+    return {
+      success: true,
+      hasHtml: !!template.html,
+      hasText: !!template.text,
+      htmlLength: template.html.length,
+      textLength: template.text.length,
+    };
+  } catch (error) {
+    return {
+      success: false,
+      error: error instanceof Error ? error.message : "Unknown error",
+    };
+  }
+}
+
+// Format currency for display
+export function formatCurrency(amount: number, currency = "USD"): string {
+  return new Intl.NumberFormat("en-US", {
+    style: "currency",
+    currency,
+  }).format(amount);
+}
+
+// Format date for email display
+export function formatEmailDate(date: Date): string {
+  return new Intl.DateTimeFormat("en-US", {
+    year: "numeric",
+    month: "long",
+    day: "numeric",
+  }).format(date);
+}
+
+// Get time-based greeting
+export function getGreeting(): string {
+  const hour = new Date().getHours();
+  if (hour < 12) return "Good morning";
+  if (hour < 17) return "Good afternoon";
+  return "Good evening";
+}