From 5be0f9f934dc0515067ed13bcf35ddaa585d5a23 Mon Sep 17 00:00:00 2001
From: o-psi <andymalsb@gmail.com>
Date: Wed, 13 Dec 2023 16:10:08 +0000
Subject: [PATCH] add calculate invoice balance function

---
 client_statement.php | 189 +++++++++++++++++++++++++++++++++++++++++++
 debug.php            |   5 ++
 functions.php        |  19 +++++
 3 files changed, 213 insertions(+)
 create mode 100644 client_statement.php
 create mode 100644 debug.php

diff --git a/client_statement.php b/client_statement.php
new file mode 100644
index 00000000..1c2de0cc
--- /dev/null
+++ b/client_statement.php
@@ -0,0 +1,189 @@
+<?php
+
+include "debug.php";
+
+require_once "inc_all.php";
+
+
+if (isset($_GET['client_id'])) {
+
+    $client_id = intval($_GET['client_id']);
+
+    $sql_client_details = "
+    SELECT 
+        client_name,
+        client_type,
+        client_website,
+        client_net_terms        
+    FROM
+        clients
+    WHERE
+        client_id = $client_id";
+
+    $result_client_details = mysqli_query($mysqli, $sql_client_details);
+    $row_client_details = mysqli_fetch_assoc($result_client_details);
+
+    $client_name = $row_client_details['client_name'];
+    $client_type = $row_client_details['client_type'];
+    $client_website = $row_client_details['client_website'];
+    $client_net_terms = $row_client_details['client_net_terms'];
+
+    $sql_client_unpaid_invoices = "
+    SELECT 
+        invoice_id,
+        invoice_number,
+        invoice_prefix,
+        invoice_date,
+        invoice_due,
+        invoice_amount
+    FROM 
+        invoices
+    WHERE
+        invoice_client_id = $client_id
+        AND invoice_status NOT LIKE 'Draft'
+        AND invoice_status NOT LIKE 'Cancelled'
+        AND invoice_status NOT LIKE 'Paid'";
+
+    $result_client_unpaid_invoices = mysqli_query($mysqli, $sql_client_unpaid_invoices);
+
+    $currency_code = getSettingValue($mysqli, "company_currency");
+
+    ?>
+
+    <ol class="breadcrumb d-print-none">
+        <li class="breadcrumb-item">
+            <a href="clients.php">Clients</a>
+        </li>
+        <li class="breadcrumb-item">
+            <a href="client_invoices.php?client_id=<?php echo $client_id; ?>"><?php echo $client_name; ?></a>
+        </li>
+    </ol>
+
+    <div class="card card-dark">
+    <div class="card-header py-2">
+        <h3 class="card-title mt-2"><i class="fas fa-fw fa-balance-scale mr-2"></i>Statement for <?php echo($client_name)?></h3>
+        <div class="card-tools">
+            <button type="button" class="btn btn-primary d-print-none" onclick="window.print();"><i class="fas fa-fw fa-print mr-2"></i>Print</button>
+        </div>
+    </div>
+    <div class="card-body p-0">
+        <div>
+            <div class="table-responsive-sm">
+                <table class="table table-sm">
+                    <!-- Past Due Payments -->
+                    <thead class="text-dark">
+                        <tr>
+                            <th>Invoice Number</th>
+                            <th>Date</th>
+                            <th>Due Date</th>
+                            <th>Amount</th>
+                            <th>Balance</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <?php 
+                            while ($row = mysqli_fetch_assoc($result_client_unpaid_invoices)) {
+                                $invoice_number = $row['invoice_number'];
+                                $invoice_id = $row['invoice_id'];
+                                $invoice_prefix = $row['invoice_prefix'];
+                                $invoice_date = $row['invoice_date'];
+                                $invoice_amount = $row['invoice_amount'];
+                                $invoice_amount_formatted = numfmt_format_currency($currency_format, $invoice_amount, $currency_code);
+                                $invoice_url = "invoice.php?invoice_id=$invoice_id";
+                                $invoice_due = $row['invoice_due'];
+
+                                $invoice_balance = calculateInvoiceBalance($mysqli, $invoice_id);
+                                $invoice_balance_formatted = numfmt_format_currency($currency_format, $invoice_balance, $currency_code);
+
+                                ?>
+                                <tr>
+                                    <td>
+                                        <a href="<?php echo $invoice_url; ?>" target="_blank"><?php echo $invoice_prefix . $invoice_number; ?></a>
+                                    </td>
+                                    <td>
+                                        <?php echo $invoice_date; ?>
+                                    </td>
+                                    <td>
+                                        <?php echo $invoice_due; ?>
+                                    </td>
+                                    <td>
+                                        <?php echo $invoice_amount_formatted; ?>
+                                    </td>
+                                    <td>
+                                        <?php echo $invoice_balance_formatted; ?>
+                                    </td>
+                                <?php
+
+                            }
+                        ?>
+                    </tbody>
+                </table>
+            </div>
+            <div class="table-responsive-sm">
+                <!-- Previous Payments -->
+                <table class="table table-sm">
+                    <thead class="text-dark">
+                        <tr>
+                            <th>Payment Reference</th>
+                            <th>Payment Date</th>
+                            <th>Payment Amount</th>
+                            <th>Invoice Number</th>
+                        </tr>
+                    </thead>
+                    <tbody>
+                        <?php 
+                            $sql_client_payments = "
+                            SELECT 
+                                payments.payment_date,
+                                payments.payment_amount,
+                                payments.payment_reference,
+                                invoices.invoice_number,
+                                invoices.invoice_prefix
+                            FROM 
+                                payments
+                            LEFT JOIN
+                                invoices ON payments.payment_invoice_id = invoices.invoice_id
+                            WHERE
+                                payment_account_id = $client_id
+                                AND payment_archived_at IS NULL
+                            ORDER BY
+                                payment_date DESC";
+
+                            $result_client_payments = mysqli_query($mysqli, $sql_client_payments);
+
+                            while ($row = mysqli_fetch_assoc($result_client_payments)) {
+                                $payment_date = $row['payment_date'];
+                                $payment_amount = $row['payment_amount'];
+                                $payment_reference = $row['payment_reference'];
+                                $invoice_number = $row['invoice_prefix'].$row['invoice_number'];
+                                $payment_amount_formatted = numfmt_format_currency($currency_format, $payment_amount, $currency_code);
+
+                                ?>
+                                <tr>
+                                    <td>
+                                        <?php echo $payment_reference; ?>
+                                    </td>
+                                    <td>
+                                        <?php echo $payment_date; ?>
+                                    </td>
+                                    <td>
+                                        <?php echo $payment_amount_formatted; ?>
+                                    </td>
+                                    <td>
+                                        <?php echo $invoice_number; ?>
+                                    </td>
+                                <?php
+
+                            }
+                        ?>
+                    </tbody>
+                </table>
+            </div>
+        </div>
+    </div>
+</div>
+
+<?php require_once "footer.php";
+
+                        }
+?>
diff --git a/debug.php b/debug.php
new file mode 100644
index 00000000..b9b52aaf
--- /dev/null
+++ b/debug.php
@@ -0,0 +1,5 @@
+<?php
+
+ini_set('display_errors', 1);
+ini_set('display_startup_errors', 1);
+error_reporting(E_ALL);
\ No newline at end of file
diff --git a/functions.php b/functions.php
index b471d80b..c831a83a 100644
--- a/functions.php
+++ b/functions.php
@@ -870,5 +870,24 @@ function calculateAccountBalance($mysqli, $account_id) {
         $balance = '0.00';
     }
 
+    return $balance;
+}
+
+function calculateInvoiceBalance($mysqli, $invoice_id) {
+    $sql_invoice = mysqli_query($mysqli, "SELECT * FROM invoices WHERE invoice_id = $invoice_id");
+    $row = mysqli_fetch_array($sql_invoice);
+    $invoice_amount = floatval($row['invoice_amount']);
+    $invoice_id = $row['invoice_id'];
+
+    $sql_payments = mysqli_query($mysqli, "SELECT SUM(payment_amount) AS total_payments FROM payments WHERE payment_invoice_id = $invoice_id");
+    $row = mysqli_fetch_array($sql_payments);
+    $total_payments = floatval($row['total_payments']);
+
+    $balance = $invoice_amount - $total_payments;
+
+    if ($balance == '') {
+        $balance = '0.00';
+    }
+
     return $balance;
 }
\ No newline at end of file