<?php
session_start();
include("dbConfig.php");

// Check if session variables are set
if (!isset($_SESSION['username']) || !isset($_SESSION['name'])) {
    echo '<META http-equiv="refresh" content="0;logout.php">';
    exit();
}

$username = $_SESSION['username'];
$name = $_SESSION['name'];

// Initialize query variable and totals
$query = null;
$total_cash = $total_card = $total_upi = $total_other = 0;
$total_ipd = $total_opd = 0; // Initialize IPD and OPD totals
$cardiology_total = $radiology_total = $laboratory_total = 0; // Initialize totals for categories

if (isset($_POST['datefrom']) && isset($_POST['dateto'])) {
    $from = $_POST['datefrom'];
    $to = $_POST['dateto'];

    if ($from > $to) {
        echo "<h3>Invalid date range. 'From' date cannot be greater than 'To' date.</h3>";
    } else {
        $query = mysqli_query($db, "
            SELECT 
                PatientId,
                PatientName,
                BillType,
                PaymentMode,
                BillNo,
                BillDate,
                PayableAmount
            FROM (
                SELECT 
                    a.PatId AS PatientId,
                    p.Name AS PatientName,
                    'Advance' AS BillType,
                    a.PaymentMode,
                    a.BillNo,
                    a.AdvanceDate AS BillDate,
                    a.Amount AS PayableAmount
                FROM advance a 
                INNER JOIN patientdetails p ON a.PatId = p.PatId
                WHERE a.AdvanceDate BETWEEN '$from' AND '$to'
                AND a.Amount > 0
                
                
                UNION ALL
                
                SELECT 
                    f.PatientId,
                    p.Name AS PatientName,
                    'Discharge' AS BillType,
                    f.PaymentMode,
                    f.FinalBillNo AS BillNo,
                    f.DischargeDate AS BillDate,
                CASE WHEN f.PaymentMode = 'Insurance' THEN f.TotalAmount ELSE f.PayableAmount END AS PayableAmount
                FROM finalbill f
                INNER JOIN patientdetails p ON f.PatientId = p.PatId
                WHERE f.DischargeDate BETWEEN '$from' AND '$to'
                
                UNION ALL
                
                SELECT 
                    i.PatientId,
                    o.Name AS PatientName,
                    'Investigation' AS BillType,
                    i.PaymentMode,
                    i.BillNo,
                    i.BDate AS BillDate,
                    i.PayableAmount
                FROM inbill i
                INNER JOIN opdpatientregister o ON i.PatientId = o.PatientId
                WHERE i.BDate BETWEEN '$from' AND '$to'
                AND i.PayableAmount > 0
                
                UNION ALL
                
                SELECT 
                    b.PatientId,
                    o.Name AS PatientName,
                    b.PatientType AS BillType,
                    b.PaymentMode,
                    b.BillNo,
                    b.BDate AS BillDate,
                    b.PayableAmount
                FROM bill b
                INNER JOIN opdpatientregister o ON b.PatientId = o.PatientId
                WHERE b.BDate BETWEEN '$from' AND '$to' 
                AND b.PatientType = 'OPD'
                AND b.PayableAmount > 0
            ) AS combined_data
            ORDER BY PatientId, BillDate, BillType;
        ");

        
    }
    // 
    // Query to get summary totals for each optionlab
    $examinationQuery = mysqli_query($db, "
        SELECT optionlab, SUM(Amount) AS TotalAmount 
        FROM examination 
        WHERE created_at >= '$from' AND created_at <= '$to' 
        GROUP BY optionlab
    ");

    if (!$examinationQuery) {
        echo "Error executing query: " . mysqli_error($db);
        exit();
    }

    // Initialize totals
    $cardiology_total = $radiology_total = $laboratory_total = 0;

    while ($row = $examinationQuery->fetch_assoc()) {
        switch ($row['optionlab']) {
            case 'Cardiology':
                $cardiology_total = $row['TotalAmount'];
                break;
            case 'Radiology':
                $radiology_total = $row['TotalAmount'];
                break;
            case 'Lab Test':
                $laboratory_total = $row['TotalAmount'];
                break;
        }
    }

}


function calculatePaymentTotals($mode, $amount, &$total_cash, &$total_card, &$total_upi, &$total_other)
{
    switch ($mode) {
        case 'Cash':
            $total_cash += $amount;
            break;
        case 'Card':
            $total_card += $amount;
            break;
        case 'UPI':
            $total_upi += $amount;
            break;
        default:
            $total_other += $amount;
            break;
    }
}
?>

<!DOCTYPE html>
<html>

<head>
    <title>Daily Transactions</title>
    <meta charset="UTF-8">
    <link href="assets/img/favicon.png" rel="icon">
    <link href="assets/img/apple-touch-icon.png" rel="apple-touch-icon">
    <script src='https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js'></script>
    <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js'></script>
    <link href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.0.3/css/font-awesome.css'>
    <link href='https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css'>
    <link href="https://fonts.googleapis.com/css?family=Open+Sans:300,300i,400,400i,700,700i|Raleway:300,400,500,700,800|Montserrat:300,400,700" rel="stylesheet">
    <link href="assets/vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet">
    <link href="assets/css/style.css" rel="stylesheet">
    <style type="text/css">
        .nav-menu a {
            padding: 3px 3px;
        }

        .hide {
            display: none;
        }

        h4 {
            padding-top: 5px;
            padding-bottom: 0px;
            color: #1abfbf;
            font-weight: bold;
        }

        hr {
            background-color: #1abfbf;
        }

        .footer {
            position: fixed;
            left: 0;
            bottom: 0;
            width: 100%;
            background-color: #efe8e8;
            color: black;
            text-align: center;
            padding: 4px;
            font-size: 12px;
        }

        .footer a {
            font-weight: bold;
            color: #0c0c67;
        }
    </style>
    <style>
        /* Styles for the summary section */
        .summary-table {
            border-collapse: collapse;
            width: 100%;
            margin-top: 20px;
        }

        .summary-table th,
        .summary-table td {
            border: 1px solid #ddd;
            padding: 8px;
            text-align: left;
        }

        .summary-table th {
            background-color: #f2f2f2;
            font-weight: bold;
        }

        .summary-row {
            background-color: #e7f3fe;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }

        .summary-title {
            font-weight: bold;
            color: #004085;
            /* Dark blue */
        }

        .summary-value {
            font-weight: bold;
            color: #155724;
            /* Dark green */
        }
    </style>
</head>

<body>
    <div style="text-align: center">
        <img src="assets/img/logo.png" width="100px" height="100px">
    </div>

    <header id="header">
        <div class="container">
            <nav id="nav-menu-container">
                <ul class="nav-menu">
                    <li class="menu-active">
                        <a class="nav-link" style="padding:2;font-size:14px" href="index.php">Home</a>
                    </li>
                    <li class="menu-has-children">
                        <a class="nav-link" style="padding:2;font-size:14px" href="#">IPD Patients</a>
                        <ul>
                            <li><a href="AddPatient.php">IPD Patient Registration</a></li>
                            <li><a href="AddAdvance.php">IPD add Advance</a></li>
                            <li><a href="UpdateWard.php">Update Ward</a></li>
                            <li><a href="IPDPatients.php">View IPD Patients</a></li>

                        </ul>
                    </li>
                    <li class="menu-has-children">
                        <a class="nav-link" style="padding:2;font-size:14px" href="#">OPD Patients</a>
                        <ul>
                            <li><a href="OPDRegistration.php">OPD Patient Registration</a></li>
                            <li><a href="OPDPatients.php">View OPD Patients</a></li>
                        </ul>
                    </li>
                    <li class="menu-has-children">
                        <a class="nav-link" style="padding:2;font-size:14px" href="#">Staff</a>
                        <ul>
                            <li><a href="AddStaff.php">Add Staff</a></li>
                            <li><a href="StaffList.php">Staff List</a></li>
                        </ul>
                    </li>
                    <li class="menu-has-children">
                        <a class="nav-link" style="padding:2;font-size:14px" href="#">Billing</a>
                        <ul>
                            <li><a href="billingId.php">Generate Consolidate Bill</a></li>
                            <li><a href="InvestigationId.php">Generate Investigation Bill</a></li>
                            <li><a href="FinaleBillId.php">Generate Discharge Bill</a></li>
                            <li><a href="SearchBill.php">Search Bill</a></li>
                        </ul>
                    </li>
                    <li class="menu-has-children">
                        <a class="nav-link" style="padding:2;font-size:14px" href="#">Particular</a>
                        <ul>
                            <li><a href="AddParticulars.php">Add Particulars</a></li>
                            <li><a href="ViewParticulars.php">View Particulars</a></li>
                        </ul>
                    </li>
                    <li class="menu-has-children">
                        <a class="nav-link" style="padding:2;font-size:14px" href="#">Report</a>
                        <ul>
                            <li><a href="UploadReport.php">Upload Patient Report</a></li>
                            <li><a href="DailyTrans.php">Transactions</a></li>
                            <li><a href="userTrans.php">User Transactions</a></li>
                            <li><a href="ViewReport.php">View Patient Reports</a></li>

                        </ul>
                    </li>
                    <li class="menu-has-children">
                        <a class="nav-link" style="padding:2;font-size:14px" href="#" style="font-size:15px"><? echo $name ?></a>
                        <ul>
                            <li><a href="logout.php">Logout</a></li>
                            <li><a href="ResetPassword.php">Reset Password</a></li>
                        </ul>
                    </li>
                </ul>
            </nav><!-- #nav-menu-container -->
        </div>
    </header>

    <section>
        <div class="row">
            <div class="col-md-1"></div>
            <div class="col-md-10">
                <div class="shadow p-3 mb-5 bg-light rounded">
                    <h2 style="text-align: center;font-weight: bold;color:#fff;background-color: #279480;padding:10px;">List of Bills</h2><br>
                    <form method="POST" action="">
                        <h5>Enter Dates</h5>
                        <div class="row">
                            <div class="form-group col">
                                <label for="datefrom">From</label>
                                <input class="form-control" type="date" name="datefrom" id="datefrom" value="<?php echo $_POST["datefrom"]; ?>" required>
                            </div>
                            <div class=" form-group col">
                                <label for="dateto">To</label>
                                <input class="form-control" type="date" name="dateto" id="dateto" value="<?php echo $_POST["dateto"] ?>" required>
                            </div>
                            <div class="col">
                                <button type="submit" class="btn btn-primary" id="viewbtn">View</button>
                            </div>
                        </div>
                    </form>

                    <?php if ($query && mysqli_num_rows($query) > 0) : ?>
                        <!--<button type="button" class="btn btn-primary" onclick="exportToExcel('tblexportData')">Export To Excel File</button><br><br>-->
                        <button type="button" class="btn btn-primary" onclick="exportTableToCSV('tblexportData')">Export To CSV File</button>

                        <table border="1" id="tblexportData" class="table table-hover">
                            <thead>
                                <tr>
                                    <th>Sl.No.</th>
                                    <th>Patient Id</th>
                                    <th>Patient Name</th>
                                    <th>Bill Type</th>
                                    <th>Mode Of Payment</th>
                                    <th>Bill No</th>
                                    <th>Bill Date</th>
                                    <th>Payable Amount</th>
                                </tr>
                            </thead>
                            <tbody>
                                <?php
                                $i = 1;
                                $total = 0;
                                $current_patient = '';
                                $current_date = '';

                                while ($row = mysqli_fetch_assoc($query)) {

                                    $patient_id = $row['PatientId'];
                                    $bill_date = $row['BillDate'];

                                    $total += $row['PayableAmount'];
                                    calculatePaymentTotals($row['PaymentMode'], $row['PayableAmount'], $total_cash, $total_card, $total_upi, $total_other);

                                    if ($row['BillType'] == 'OPD') {
                                        $total_opd += $row['PayableAmount'];
                                    } else {
                                        $total_ipd += $row['PayableAmount'];
                                    }
                                ?>
                                    <tr>
                                        <td><?php echo $i; ?></td>
                                        <td><?php echo $patient_id; ?></td>
                                        <td><?php echo $row['PatientName']; ?></td>
                                        <td><?php echo $row['BillType']; ?></td>
                                        <td><?php echo $row['PaymentMode']; ?></td>
                                        <td>
                                            <a href="<?php echo ($row['BillType'] == 'OPD') ? "ViewTransBill.php?Billno={$row['BillNo']}&type={$row['BillType']}" : (($row['BillType'] == 'Advance') ? "ViewTransBill1.php?Billno={$row['BillNo']}&PatId={$row['PatientId']}&type=Advance" : '#'); ?>" target="_blank"><?php echo $row['BillNo']; ?></a>
                                        </td>
                                        <td><?php echo date('d-m-Y', strtotime($bill_date)); ?></td>

                                        <!--<td><?php echo $bill_date; ?></td>-->
                                        <td><?php echo $row['PayableAmount']; ?></td>
                                    </tr>
                                <?php
                                    $i++;
                                    $current_patient = $patient_id;
                                    $current_date = $bill_date;
                                }
                                ?>
                                <tr>
                                    <td colspan="7">Total Transaction</td>
                                    <td><?php echo $total; ?></td>
                                </tr>
                            </tbody>
                            <tfoot>
                                <tr>
                                    <th colspan="8" class="summary-title">Distribution Of total Amounts IN IPD or OPD</th>
                                </tr>
                                <tr class="summary-row">
                                    <td colspan="7">IPD Total</td>
                                    <td class="summary-value"><?php echo $total_ipd; ?></td>
                                </tr>
                                <tr class="summary-row">
                                    <td colspan="7">OPD Total</td>
                                    <td class="summary-value"><?php echo $total_opd; ?></td>
                                </tr>

                                <tr>
                                    <th colspan="8" class="summary-title">Summary</th>
                                </tr>

                                <tr class="summary-row">
                                    <td colspan="7">Cash Total</td>
                                    <td class="summary-value"><?php echo $total_cash; ?></td>
                                </tr>
                                <tr class="summary-row">
                                    <td colspan="7">Card Total</td>
                                    <td class="summary-value"><?php echo $total_card; ?></td>
                                </tr>
                                <tr class="summary-row">
                                    <td colspan="7">UPI Total</td>
                                    <td class="summary-value"><?php echo $total_upi; ?></td>
                                </tr>
                                <tr class="summary-row">
                                    <td colspan="7">Other Total</td>
                                    <td class="summary-value"><?php echo $total_other; ?></td>
                                </tr>
                                <tr>
                                    <th colspan="8" class="summary-title">Examinations Total</th>
                                </tr>
                                <tr class="summary-row">
                                    <td colspan="7">Cardiology Total</td>
                                    <td class="summary-value"><?php echo $cardiology_total; ?></td>
                                </tr>
                                <tr class="summary-row">
                                    <td colspan="7">Radiology Total</td>
                                    <td class="summary-value"><?php echo $radiology_total; ?></td>
                                </tr>
                                <tr class="summary-row">
                                    <td colspan="7">Lab Test Total</td>
                                    <td class="summary-value"><?php echo $laboratory_total; ?></td>
                                </tr>
                            </tfoot>
                        </table>
                    <?php else : ?>
                        <p>No data available for the selected date range.</p>
                    <?php endif; ?>
                    <br>
                    <button type="button" class="btn btn-danger" onclick="history.back()">Back</button><br><br>
                </div>
            </div>
            <div class="col-md-1"></div>
        </div>
    </section>

    <script>
        function exportTableToCSV(tableID, filename = 'data.csv') {
            var table = document.getElementById(tableID);
            var rows = table.querySelectorAll('tr');
            var csvContent = [];

            rows.forEach(row => {
                var cols = row.querySelectorAll('td, th');
                var csvRow = [];
                cols.forEach(col => csvRow.push(col.innerText));
                csvContent.push(csvRow.join(","));
            });

            // Create a downloadable CSV file
            var csvFile = new Blob([csvContent.join("\n")], {
                type: 'text/csv'
            });
            var downloadLink = document.createElement("a");
            downloadLink.href = URL.createObjectURL(csvFile);
            downloadLink.download = filename;
            downloadLink.click();
        }
    </script>
    <button type="button" class="btn btn-primary" onclick="exportTableToCSV('tblexportData')">Export To CSV File</button>



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