ria/app/Controllers/Expense.php

<?php

namespace App\Controllers;

use App\Controllers\BaseController;
use App\Models\Expense_model;
use App\Models\Supplier_model;

class Expense extends BaseController
{
    protected $expense_model;
    protected $supplier_model;
    protected $session;

    public function __construct()
    {
        parent::__construct();
        $this->expense_model = new Expense_model();
        $this->supplier_model = new Supplier_model();
        $this->session = session();
        helper('form');
        $this->isLoggedIn();
    }

    public function index()
    {
  
        if ($this->request->getMethod() === 'GET')
        {
            $toDate = date('Y-m-d');
            $fromDate = date('Y-m-d', strtotime('-90 days', strtotime($toDate)));
        } else if ($this->request->getMethod() === 'POST') {
            $fromDate = $this->request->getPost('fromDate');
            $toDate = $this->request->getPost('toDate');
            $fromDate =  date('Y-m-d', strtotime($fromDate)); 
            $toDate = date('Y-m-d', strtotime($toDate)); 
        }

        $data['expense_list'] = $this->expense_model->getAllExpense($fromDate,$toDate);
        $data['supplier_list'] = json_encode($this->supplier_model->supplierlisting());
        $this->global['pageTitle'] = 'Non IGR / Expense List';
        $data['fromDate'] =  date('d-m-Y', strtotime($fromDate)); 
        $data['toDate'] = date('d-m-Y', strtotime($toDate)); 
       
        $this->loadViews("expense_list", $this->global, $data, NULL);
    }

    private function generateSerialNumber($financialYear, $lastSerial)
    {
        // If no last serial number exists, start with 00001
        $lastNumber = $lastSerial ? (int)explode('/', $lastSerial)[2] : 0;
        $newNumber = str_pad($lastNumber + 1, 3, '0', STR_PAD_LEFT);
        return "NonIGR/$financialYear/$newNumber";
    }

    public function addExpense()
    {
        try{
        $file = $this->request->getFile('transporterfile');
        $fileName = '';
        if ($file->isValid() && !$file->hasMoved()) {
            $fileName = $file->getRandomName();
            $file->move(WRITEPATH . 'uploads', $fileName);
        }

       

       // Fetch the current month
        $currentMonth = date('n'); // 'n' gives the month without leading zeros (1-12)

        // Calculate the current financial year
        if ($currentMonth >= 4) { // If it's April or later
            $startYear = date('Y'); // Current year
            $endYear = $startYear + 1; // Next year
        } else { // If it's January, February, or March
            $endYear = date('Y'); // Current year
            $startYear = $endYear - 1; // Previous year
        }

        // Format the financial year as "yy-yy"
        $financialYear = substr($startYear, -2) . '-' . substr($endYear, -2);

        // Fetch the last serial number for the financial year
        $lastSerial = $this->expense_model->getLastSerialNumber($financialYear);

        // Generate the next serial number
        $newSerialNumber = $this->generateSerialNumber($financialYear, $lastSerial);

    
        $data = [
            'transporter_file' => $fileName,
            'supplier_id' => $this->request->getPost('supplierid'),
            'remarks' => $this->request->getPost('remarks'),
            'item_description' => $this->request->getPost('item_description'),
            'cost' => $this->request->getPost('cost'),
            'cgst' => $this->request->getPost('cgst'),
            'sgst' => $this->request->getPost('sgst'),
            'igst' => $this->request->getPost('igst'),
            'total' => $this->request->getPost('total'),
            'bill_no' => $this->request->getPost('bill_no'),
            'bill_date' => $this->request->getPost('bill_date'),
            'status' => $this->request->getPost('status'),
            'serial_number' => $newSerialNumber,
        ];

      
        $insert_id = $this->expense_model->insertExpense($data);
        if ($insert_id) {
            return json_encode('true');
        } else {
            return json_encode('false');
        }
    } catch (\Exception $e) {
        // Handle the exception
        echo "Error: " . $e->getMessage();
    }
    }

    public function getExpenseDetails()
    {
        $id = $this->request->getPost('id');

        if ($id) {
            $expense = $this->expense_model->getExpenseById($id);
            echo json_encode($expense);
        } else {
            echo json_encode(['error' => 'Invalid ID']);
        }
    }

    public function editExpense()
    {
        $id = $this->request->getPost('id');
        $file = $this->request->getFile('transporterfile');
        $fileName = '';

        if ($file->isValid() && !$file->hasMoved()) {
            $fileName = $file->getRandomName();
            $file->move(WRITEPATH . 'uploads', $fileName);
        } else {
            $fileName = $this->request->getPost('existing_file'); // Use existing file if no new file is uploaded
        }

     
    
        $data = [
            'supplier_id' => $this->request->getPost('supplierid'),
            'remarks' => $this->request->getPost('remarks'),
            'item_description' => $this->request->getPost('item_description'),
            'cost' => $this->request->getPost('cost'),
            'cgst' => $this->request->getPost('cgst'),
            'sgst' => $this->request->getPost('sgst'),
            'igst' => $this->request->getPost('igst'),
            'total' => $this->request->getPost('total'),
            'bill_no' => $this->request->getPost('bill_no'),
            'bill_date' => $this->request->getPost('bill_date'),
            'status' => $this->request->getPost('status')
        ];
        if(!empty($fileName)){
            $data['transporter_file'] = $fileName;
        }
       

        if ($id) {
            $result = $this->expense_model->updateExpense($id, $data);
            if ($result) {
                echo json_encode(['success' => 'Expense updated successfully']);
            } else {
                echo json_encode(['error' => 'Failed to update expense']);
            }
        } else {
            echo json_encode(['error' => 'Invalid ID']);
        }
    }


    public function downloads($filename)
    {
        $path = WRITEPATH . 'uploads/' . $filename;
        if (file_exists($path)) {
            return $this->response->download($path, null);
        } else {
            throw \CodeIgniter\Exceptions\PageNotFoundException::forPageNotFound('File not found');
        }
    }


    public function deleteFile()
    {
        $fileName = $this->request->getPost('file_name');
        $expenseId = $this->request->getPost('expense_id');
    
        if ($fileName && $expenseId) {
            // Construct the file path
            $path = WRITEPATH . 'uploads/' . $fileName;
    
            // Begin transaction
            $db = \Config\Database::connect();
            $db->transBegin();
    
            try {
                // Delete the file from the folder
                if (file_exists($path)) {
                    if (!unlink($path)) {
                        throw new \Exception('Unable to delete file from the folder.');
                    }
                }
    
                // Update the database to set transporter_file to null
                $this->expense_model->deleteFile($expenseId);
    
                // Commit transaction
                $db->transCommit();
                echo json_encode(['success' => true]);
            } catch (\Exception $e) {
                // Rollback transaction
                $db->transRollback();
                echo json_encode(['success' => false, 'message' => $e->getMessage()]);
            }
        } else {
            echo json_encode(['success' => false, 'message' => 'Invalid parameters.']);
        }
    }
    

    
}