Invoice Generator

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@jsxImportSource https://esm.sh/react@18.2.0 */\nimport React, { useState, useEffect } from \"https://esm.sh/react@18.2.0\";\nimport { createRoot } from \"https://esm.sh/react-dom@18.2.0/client\";\nimport PDFDocument from \"https://esm.sh/pdfkit@0.13.0\";\nimport blobStream from \"https://esm.sh/blob-stream@0.1.3\";\n\n// Invoice Templates\nconst INVOICE_TEMPLATES = [\n {\n id: 'classic',\n name: 'Classic Professional',\n backgroundColor: '#FFFFFF',\n textColor: '#334155',\n accentColor: '#7C3AED'\n },\n {\n id: 'modern',\n name: 'Modern Minimalist',\n backgroundColor: '#F8FAFC',\n textColor: '#1E293B',\n accentColor: '#10B981'\n },\n {\n id: 'creative',\n name: 'Creative Bold',\n backgroundColor: '#F0F4F8',\n textColor: '#2D3748',\n accentColor: '#3182CE'\n }\n];\n\nfunction generatePDFServerSide(invoiceData, template) {\n return new Promise((resolve, reject) => {\n try {\n const doc = new PDFDocument();\n const stream = doc.pipe(blobStream());\n\n // PDF Content Generation\n doc.fontSize(16).fillColor(template.accentColor).text('INVOICE', { align: 'left' });\n doc.fontSize(10).fillColor('black')\n .text(`Invoice #: ${invoiceData.invoiceDetails.number}`, { align: 'right' })\n .text(`Date: ${invoiceData.invoiceDetails.date}`, { align: 'right' });\n\n // Company Info\n doc.moveDown();\n doc.fontSize(12).fillColor('black').text('FROM:', { underline: true });\n doc.fontSize(10)\n .text(`${invoiceData.companyInfo.name}`)\n .text(`${invoiceData.companyInfo.address}`)\n .text(`${invoiceData.companyInfo.email}`);\n\n // Client Info\n doc.moveDown();\n doc.fontSize(12).text('BILL TO:', { underline: true });\n doc.fontSize(10)\n .text(`${invoiceData.clientInfo.name}`)\n .text(`${invoiceData.clientInfo.address}`)\n .text(`${invoiceData.clientInfo.email}`);\n\n // Line Items\n doc.moveDown();\n doc.fontSize(10).fillColor(template.accentColor).text('LINE ITEMS', { underline: true });\n \n const tableHeaders = ['Description', 'Quantity', 'Rate', 'Amount'];\n const columnWidths = [250, 100, 100, 100];\n \n doc.moveDown();\n tableHeaders.forEach((header, index) => {\n doc.text(header, columnWidths.slice(0, index).reduce((a, b) => a + b, 0), undefined, { \n width: columnWidths[index], \n align: 'left' \n });\n });\n\n invoiceData.lineItems.forEach(item => {\n doc.moveDown();\n [\n item.description, \n item.quantity.toString(), \n `$${item.rate.toFixed(2)}`, \n `$${item.amount.toFixed(2)}`\n ].forEach((text, index) => {\n doc.text(text, columnWidths.slice(0, index).reduce((a, b) => a + b, 0), undefined, { \n width: columnWidths[index], \n align: 'left' \n });\n });\n });\n\n // Totals\n doc.moveDown(2);\n doc.fontSize(12).text(`Subtotal: $${invoiceData.subtotal.toFixed(2)}`, { align: 'right' });\n doc.text(`Tax (8%): $${invoiceData.tax.toFixed(2)}`, { align: 'right' });\n doc.text(`Total: $${invoiceData.total.toFixed(2)}`, { align: 'right', underline: true });\n\n doc.end();\n\n stream.on('finish', function() {\n resolve(stream.toBlob());\n });\n } catch (error) {\n reject(error);\n }\n });\n}\n\nfunction InvoiceGenerator() {\n const [template, setTemplate] = useState(INVOICE_TEMPLATES[0]);\n const [companyInfo, setCompanyInfo] = useState({\n name: '',\n address: '',\n email: '',\n phone: ''\n });\n const [clientInfo, setClientInfo] = useState({\n name: '',\n email: '',\n address: ''\n });\n const [invoiceDetails, setInvoiceDetails] = useState({\n number: `INV-${Math.floor(Math.random() * 10000)}`,\n date: new Date().toISOString().split('T')[0],\n dueDate: new Date(Date.now() + 30 * 24 * 60 * 60 * 1000).toISOString().split('T')[0]\n });\n const [lineItems, setLineItems] = useState([\n { description: '', quantity: 1, rate: 0, amount: 0 }\n ]);\n const [notes, setNotes] = useState('');\n const [paymentTerms, setPaymentTerms] = useState('Net 30 days');\n const [generatedPdfUrl, setGeneratedPdfUrl] = useState(null);\n\n const calculateTotals = () => {\n const subtotal = lineItems.reduce((sum, item) => sum + (item.quantity * item.rate), 0);\n const tax = subtotal * 0.08; // 8% tax rate\n const total = subtotal + tax;\n return { subtotal, tax, total };\n };\n\n const generatePDF = async () => {\n const { subtotal, tax, total } = calculateTotals();\n const invoiceData = {\n companyInfo,\n clientInfo,\n invoiceDetails,\n lineItems,\n subtotal,\n tax,\n total\n };\n\n try {\n const pdfBlob = await generatePDFServerSide(invoiceData, template);\n const pdfUrl = URL.createObjectURL(pdfBlob);\n setGeneratedPdfUrl(pdfUrl);\n window.open(pdfUrl, '_blank');\n } catch (error) {\n console.error(\"PDF Generation Error:\", error);\n alert(\"Failed to generate PDF. Please try again.\");\n }\n };\n\n const addLineItem = () => {\n setLineItems([...lineItems, { description: '', quantity: 1, rate: 0, amount: 0 }]);\n };\n\n const updateLineItem = (index, field, value) => {\n const updatedItems = [...lineItems];\n updatedItems[index][field] = value;\n \n if (field === 'quantity' || field === 'rate') {\n updatedItems[index].amount = updatedItems[index].quantity * updatedItems[index].rate;\n }\n \n setLineItems(updatedItems);\n };\n\n const { subtotal, tax, total } = calculateTotals();\n\n return (\n

\n \n

\n\n {generatedPdfUrl && (\n

\n \n Download Generated Invoice\n \n

\n )}\n

\n );\n}\n\nfunction App() {\n return ;\n}\n\nfunction client() {\n createRoot(document.getElementById(\"root\")).render();\n}\n\nif (typeof document !== \"undefined\") { client(); }\n\nexport default async function server(request: Request): Promise {\n return new Response(`\n \n \n Invoice Generator\n \n \n \n \n

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