invoice update

app/Http/Controllers/Admin/AdminInvoiceController.php

@@ -0,0 +1,122 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Http\Controllers\Controller;
+use Illuminate\Http\Request;
+use App\Models\Invoice;
+use App\Models\InvoiceItem;
+use Mpdf\Mpdf;
+
+class AdminInvoiceController extends Controller
+{
+    // -------------------------------------------------------------
+    // INVOICE LIST PAGE
+    // -------------------------------------------------------------
+    public function index()
+    {
+        $invoices = Invoice::latest()->get();
+        return view('admin.invoice', compact('invoices'));
+    }
+
+    // -------------------------------------------------------------
+    // POPUP VIEW (AJAX)
+    // -------------------------------------------------------------
+    public function popup($id)
+    {
+        $invoice = Invoice::with('items')->findOrFail($id);
+        return view('admin.popup_invoice', compact('invoice'));
+    }
+
+    // -------------------------------------------------------------
+    // EDIT INVOICE PAGE
+    // -------------------------------------------------------------
+    public function edit($id)
+    {
+        $invoice = Invoice::findOrFail($id);
+        return view('admin.invoice_edit', compact('invoice'));
+    }
+
+    // -------------------------------------------------------------
+    // UPDATE INVOICE
+    // -------------------------------------------------------------
+    public function update(Request $request, $id)
+    {
+        $invoice = Invoice::findOrFail($id);
+
+        // Validate editable fields
+        $data = $request->validate([
+            'invoice_date'      => 'required|date',
+            'due_date'          => 'required|date|after_or_equal:invoice_date',
+            'payment_method'    => 'nullable|string',
+            'reference_no'      => 'nullable|string|max:255',
+            'final_amount'      => 'required|numeric|min:0',
+            'gst_percent'       => 'required|numeric|min:0|max:28',
+            'status'            => 'required|in:pending,paid,overdue',
+            'notes'             => 'nullable|string',
+        ]);
+
+        // Auto-calc
+        $gst_amount = ($data['final_amount'] * $data['gst_percent']) / 100;
+        $final_amount_with_gst = $data['final_amount'] + $gst_amount;
+
+        $data['gst_amount'] = $gst_amount;
+        $data['final_amount_with_gst'] = $final_amount_with_gst;
+
+        // Update DB
+        $invoice->update($data);
+
+        // Generate PDF
+        $this->generateInvoicePDF($invoice);
+
+        return redirect()
+            ->route('admin.invoices.index')
+            ->with('success', 'Invoice updated & PDF generated successfully.');
+    }
+
+    // -------------------------------------------------------------
+    // PDF GENERATION USING mPDF
+    // -------------------------------------------------------------
+    public function generateInvoicePDF($invoice)
+    {
+        // PDF Name
+        $fileName = 'invoice-' . $invoice->invoice_number . '.pdf';
+
+        // Save directly in /public/invoices
+        $folder = public_path('invoices/');
+
+        // Create folder if not exists
+        if (!file_exists($folder)) {
+            mkdir($folder, 0777, true);
+        }
+
+        // Full path
+        $filePath = $folder . $fileName;
+
+        // Delete old file
+        if (file_exists($filePath)) {
+            unlink($filePath);
+        }
+
+        // Initialize mPDF
+        $mpdf = new Mpdf([
+            'mode' => 'utf-8',
+            'format' => 'A4',
+            'default_font' => 'sans-serif'
+        ]);
+
+        // Load HTML view
+        $html = view('admin.pdf.invoice', compact('invoice'))->render();
+
+        // Generate
+        $mpdf->WriteHTML($html);
+
+        // Save to public/invoices
+        $mpdf->Output($filePath, 'F');
+
+        // Save path in DB
+        $invoice->update([
+            'pdf_path' => 'invoices/' . $fileName
+        ]);
+    }
+}