V1.0 add email notifications

Dockerfile

@@ -55,7 +55,7 @@ RUN chmod +x /var/www/html/startup.sh
 # Expose port 80 for Nginx
 EXPOSE 80
 
-ARG SOFTWARE_VERSION=0.9.0
+ARG SOFTWARE_VERSION=1.0.0
 
 # Start both PHP-FPM, Nginx
 CMD ["sh", "-c", "/var/www/html/startup.sh"]

README.md

@@ -48,6 +48,7 @@ See instructions to run Wallos below.
     - curl
     - gd
     - imagick
+    - openssl
     - sqlite3
 
 #### Docker
@@ -63,10 +64,13 @@ Download or clone this repo and move the files into your web root - usually `/va
 Add the following scripts to your cronjobs with `crontab -e`
 
 ```bash
-0 0 * * * php /var/www/html/endpoints/cronjobs/updatenextpayment.php >> /var/log/cron/updatenextpayment.log 2>&1
+0 1 * * * php /var/www/html/endpoints/cronjobs/updatenextpayment.php >> /var/log/cron/updatenextpayment.log 2>&1
-0 1 * * * php /var/www/html/endpoints/cronjobs/updateexchange.php >> /var/log/cron/updateexchange.log 2>&1
+0 2 * * * php /var/www/html/endpoints/cronjobs/updateexchange.php >> /var/log/cron/updateexchange.log 2>&1
+0 9 * * * php /var/www/html/endpoints/cronjobs/sendnotifications.php >> /var/log/cron/sendnotifications.log 2>&1
 ```
 
+If your web root is not `/var/www/html/` adjust both the cronjobs above and `/endpoints/cronjobs/conf.php` accordingly.
+
 #### Docker
 
 ```bash

cronjobs

@@ -1,3 +1,4 @@
-# Run the script every day
+# Run the scripts every day
-0 0 * * * /usr/local/bin/php /var/www/html/endpoints/cronjobs/updatenextpayment.php >> /var/log/cron/updatenextpayment.log 2>&1
+0 1 * * * /usr/local/bin/php /var/www/html/endpoints/cronjobs/updatenextpayment.php >> /var/log/cron/updatenextpayment.log 2>&1
-0 1 * * * /usr/local/bin/php /var/www/html/endpoints/cronjobs/updateexchange.php >> /var/log/cron/updateexchange.log 2>&1
+0 2 * * * /usr/local/bin/php /var/www/html/endpoints/cronjobs/updateexchange.php >> /var/log/cron/updateexchange.log 2>&1
+0 9 * * * /usr/local/bin/php /var/www/html/endpoints/cronjobs/sendnotifications.php >> /var/log/cron/sendnotifications.log 2>&1

db/commands.sql

@@ -27,6 +27,7 @@ CREATE TABLE subscriptions (
     payment_method_id INTEGER,
     payer_user_id INTEGER,
     category_id INTEGER,
+    notify BOOLEAN DEFAULT false,
     FOREIGN KEY(currency_id) REFERENCES currencies(id),
     FOREIGN KEY(cycle) REFERENCES cycles(id),
     FOREIGN KEY(frequency) REFERENCES frequencies(id),
@@ -81,7 +82,17 @@ CREATE TABLE last_exchange_update (
 
 CREATE TABLE last_update_next_payment_date (
     date DATE NOT NULL
-)
+);
+
+CREATE TABLE notifications (
+    id INTEGER PRIMARY KEY,
+    enabled BOOLEAN DEFAULT false,
+    days INTEGER,
+    smtp_address VARCHAR(255),
+    smtp_port INTEGER,
+    smtp_username VARCHAR(255),
+    smtp_password VARCHAR(255)
+);
 
 INSERT INTO categories (id, name) VALUES
     (1, 'No category'),

endpoints/cronjobs/conf.php

@@ -0,0 +1,6 @@
+<?php
+
+#Webroot path
+$webPath = "/var/www/html/";
+
+?>

endpoints/cronjobs/createdatabase.php

@@ -1,9 +1,11 @@
 <?php 
 
-$databaseFile = '/var/www/html/db/wallos.db';
+require_once 'conf.php';
+
+$databaseFile = $webPath . 'db/wallos.db';
 
 if (!file_exists($databaseFile)) {
-    echo "Database does not exist. Creating it...";
+    echo "Database does not exist. Creating it...\n";
     $db = new SQLite3($databaseFile, SQLITE3_OPEN_CREATE | SQLITE3_OPEN_READWRITE);
     $db->busyTimeout(5000);
 
@@ -36,6 +38,7 @@ if (!file_exists($databaseFile)) {
         payment_method_id INTEGER,
         payer_user_id INTEGER,
         category_id INTEGER,
+        notify BOOLEAN DEFAULT false,
         FOREIGN KEY(currency_id) REFERENCES currencies(id),
         FOREIGN KEY(cycle) REFERENCES cycles(id),
         FOREIGN KEY(frequency) REFERENCES frequencies(id),
@@ -92,6 +95,16 @@ if (!file_exists($databaseFile)) {
         date DATE NOT NULL
     )');
 
+    $db-exec('CREATE TABLE notifications (
+        id INTEGER PRIMARY KEY,
+        enabled BOOLEAN DEFAULT false,
+        days INTEGER,
+        smtp_address VARCHAR(255),
+        smtp_port INTEGER,
+        smtp_username VARCHAR(255),
+        smtp_password VARCHAR(255)
+    )');
+
     $db->exec("INSERT INTO categories (id, name) VALUES
     (1, 'No category'),
     (2, 'Entertainment'),
@@ -218,8 +231,53 @@ if (!file_exists($databaseFile)) {
     (30, 'VeriFone', 'verifone.png'),
     (31, 'WebMoney', 'webmoney.png')");
 
+    echo "Database created.\n";
 } else {
-    echo "Database already exist. Skipping...";
+    echo "Database already exist. Checking for upgrades...\n";
+
+    $databaseFile = $webPath . 'db/wallos.db';
+    $db = new SQLite3($databaseFile);
+    $db->busyTimeout(5000);
+
+    if (!$db) {
+        die('Connection to the database failed.');
+    }
+
+    # v0.9 to v1.0
+    # Added new notifications table
+    # Added notify column to subscriptions table
+
+    $result = $db->query("SELECT name FROM sqlite_master WHERE type='table' AND name='notifications'");
+    if (!$result->fetchArray(SQLITE3_ASSOC)) {
+        $db->exec('CREATE TABLE notifications (
+            id INTEGER PRIMARY KEY,
+            enabled BOOLEAN DEFAULT false,
+            days INTEGER,
+            smtp_address VARCHAR(255),
+            smtp_port INTEGER,
+            smtp_username VARCHAR(255),
+            smtp_password VARCHAR(255)
+        )');
+        echo "Table 'notifications' created.\n";
+    } else {
+        echo "Table 'notifications' already exists.\n";
+    }
+
+    $result = $db->query("PRAGMA table_info(subscriptions)");
+    $notifyColumnExists = false;
+    while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
+        if ($row['name'] === 'notify') {
+            $notifyColumnExists = true;
+            break;
+        }
+    }
+    if (!$notifyColumnExists) {
+        $db->exec('ALTER TABLE subscriptions ADD COLUMN notify BOOLEAN DEFAULT false');
+        echo "Column 'notify' added to table 'subscriptions'.\n";
+    } else {
+        echo "Column 'notify' already exists in table 'subscriptions'.\n";
+    }
+
 }
 
 ?>

endpoints/cronjobs/sendnotifications.php

@@ -0,0 +1,89 @@
+<?php
+    use PHPMailer\PHPMailer\PHPMailer;
+    use PHPMailer\PHPMailer\SMTP;
+    use PHPMailer\PHPMailer\Exception;
+
+    require_once 'conf.php';
+    require_once $webPath . 'includes/connect_endpoint_crontabs.php';
+
+    $query = "SELECT * FROM notifications WHERE id = 1";
+    $result = $db->query($query);
+
+    if ($row = $result->fetchArray(SQLITE3_ASSOC)) {
+        $notificationsEnabled = $row['enabled'];
+        $days = $row['days'];
+        $smtpAddress = $row["smtp_address"];
+        $smtpPort = $row["smtp_port"];
+        $smtpUsername = $row["smtp_username"];
+        $smtpPassword = $row["smtp_password"];
+    } else {
+        echo "Notifications are disabled. No need to run.";
+    }
+
+    if ($notificationsEnabled) {
+        $currencies = array();
+        $query = "SELECT * FROM currencies";
+        $result = $db->query($query);
+        while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
+            $currencyId = $row['id'];
+            $currencies[$currencyId] = $row;
+        }
+
+        $querySubscriptions = "SELECT * FROM subscriptions WHERE notify = 1";
+        $resultSubscriptions = $db->query($querySubscriptions);
+    
+        $notify = []; $i = 0;
+        $currentDate = new DateTime('now');
+        while ($rowSubscription = $resultSubscriptions->fetchArray(SQLITE3_ASSOC)) {
+            $nextPaymentDate = new DateTime($rowSubscription['next_payment']);
+            $difference = $currentDate->diff($nextPaymentDate)->days + 1;
+            if ($difference === $days) {
+                $notify[$i]['name'] = $rowSubscription['name'];
+                $notify[$i]['price'] = $rowSubscription['price'] . $currencies[$rowSubscription['currency_id']]['symbol'];
+                $i++;
+            }
+        }
+
+        if (!empty($notify)) {
+            require $webPath . 'libs/PHPMailer/PHPMailer.php';
+            require $webPath . 'libs/PHPMailer/SMTP.php';
+            require $webPath . 'libs/PHPMailer/Exception.php';
+
+            $dayText = $days == 1 ? "tomorrow" : "in " . $days . " days"
+            $message = "The following subscriptions are up for renewal " . $dayText . ":\n";
+            foreach ($notify as $subscription) {
+                $message .= $subscription['name'] . " for " . $subscription['price'] . "\n";
+            }
+
+            $mail = new PHPMailer(true);
+            $mail->isSMTP();
+
+            $mail->Host = $smtpAddress;
+            $mail->SMTPAuth = true;
+            $mail->Username = $smtpUsername;
+            $mail->Password = $smtpPassword;
+            $mail->SMTPSecure = 'tls';
+            $mail->Port = $smtpPort;
+
+            $getUser = "SELECT * FROM user WHERE id = 1";
+            $user = $db->querySingle($getUser, true);
+            $email = $user['email'];
+            $name = $user['username'];
+
+            $mail->setFrom('wallos@wallosapp.com', 'Wallos App');
+            $mail->addAddress($email, $name);
+
+            $mail->Subject = 'Wallos Notification';
+            $mail->Body = $message;
+
+            if ($mail->send()) {
+                echo "Notifications sent";
+            } else {
+                echo "Error sending notifications: " . $mail->ErrorInfo;
+            }
+        } else {
+            echo "Nothing to notify.";
+        }
+
+    }
+?>

endpoints/cronjobs/updateexchange.php

@@ -1,5 +1,6 @@
 <?php
-    require_once '/var/www/html/includes/connect_endpoint_crontabs.php';
+    require_once 'conf.php';
+    require_once $webPath . 'includes/connect_endpoint_crontabs.php';
 
     $query = "SELECT api_key FROM fixer";
     $result = $db->query($query);

endpoints/cronjobs/updatenextpayment.php

@@ -1,5 +1,6 @@
 <?php
-    require_once '/var/www/html/includes/connect_endpoint_crontabs.php';
+    require_once 'conf.php';
+    require_once $webPath . 'includes/connect_endpoint_crontabs.php';
 
     $currentDate = new DateTime();
     $currentDateString = $currentDate->format('Y-m-d');

endpoints/notifications/save.php

@@ -0,0 +1,71 @@
+<?php
+    require_once '../../includes/connect_endpoint.php';
+    session_start();
+
+    if ($_SERVER["REQUEST_METHOD"] === "POST") {
+        $postData = file_get_contents("php://input");
+        $data = json_decode($postData, true);
+
+        if (
+            !isset($data["days"]) || $data['days'] == "" ||
+            !isset($data["smtpaddress"]) || $data["smtpaddress"] == "" ||
+            !isset($data["smtpport"]) || $data["smtpport"] == "" ||
+            !isset($data["smtpusername"]) || $data["smtpusername"] == "" ||
+            !isset($data["smtppassword"]) || $data["smtppassword"] == ""
+        ) {
+            $response = [
+                "success" => false,
+                "errorMessage" => "Please fill all fields"
+            ];
+            echo json_encode($response);
+        } else {
+            $enabled = $data["enabled"];
+            $days = $data["days"];
+            $smtpAddress = $data["smtpaddress"];
+            $smtpPort = $data["smtpport"];
+            $smtpUsername = $data["smtpusername"];
+            $smtpPassword = $data["smtppassword"];
+
+            $query = "SELECT COUNT(*) FROM notifications";
+            $result = $db->querySingle($query);
+    
+            if ($result === false) {
+                $response = [
+                    "success" => false,
+                    "errorMessage" => "Error saving notifications data"
+                ];
+                echo json_encode($response);
+            } else {
+                if ($result == 0) {
+                    $query = "INSERT INTO notifications (enabled, days, smtp_address, smtp_port, smtp_username, smtp_password)
+                              VALUES (:enabled, :days, :smtpAddress, :smtpPort, :smtpUsername, :smtpPassword)";
+                } else {
+                    $query = "UPDATE notifications
+                              SET enabled = :enabled, days = :days, smtp_address = :smtpAddress, smtp_port = :smtpPort,
+                                  smtp_username = :smtpUsername, smtp_password = :smtpPassword";
+                }
+    
+                $stmt = $db->prepare($query);
+                $stmt->bindValue(':enabled', $enabled, SQLITE3_INTEGER);
+                $stmt->bindValue(':days', $days, SQLITE3_INTEGER);
+                $stmt->bindValue(':smtpAddress', $smtpAddress, SQLITE3_TEXT);
+                $stmt->bindValue(':smtpPort', $smtpPort, SQLITE3_INTEGER);
+                $stmt->bindValue(':smtpUsername', $smtpUsername, SQLITE3_TEXT);
+                $stmt->bindValue(':smtpPassword', $smtpPassword, SQLITE3_TEXT);
+    
+                if ($stmt->execute()) {
+                    $response = [
+                        "success" => true
+                    ];
+                    echo json_encode($response);
+                } else {
+                    $response = [
+                        "success" => false,
+                        "errorMessage" => "Error saving notification data"
+                    ];
+                    echo json_encode($response);
+                }
+            }
+        }
+    }
+?>

endpoints/notifications/sendtestmail.php

@@ -0,0 +1,72 @@
+<?php
+
+use PHPMailer\PHPMailer\PHPMailer;
+use PHPMailer\PHPMailer\SMTP;
+use PHPMailer\PHPMailer\Exception;
+
+require_once '../../includes/connect_endpoint.php';
+session_start();
+
+if ($_SERVER["REQUEST_METHOD"] === "POST") {
+    $postData = file_get_contents("php://input");
+    $data = json_decode($postData, true);
+
+    if (
+        !isset($data["smtpaddress"]) || $data["smtpaddress"] == "" ||
+        !isset($data["smtpport"]) || $data["smtpport"] == "" ||
+        !isset($data["smtpusername"]) || $data["smtpusername"] == "" ||
+        !isset($data["smtppassword"]) || $data["smtppassword"] == ""
+    ) {
+        $response = [
+            "success" => false,
+            "errorMessage" => "Please fill all fields"
+        ];
+        echo json_encode($response);
+    } else {
+        require '../../libs/PHPMailer/PHPMailer.php';
+        require '../../libs/PHPMailer/SMTP.php';
+        require '../../libs/PHPMailer/Exception.php';
+
+        $smtpAddress = $data["smtpaddress"];
+        $smtpPort = $data["smtpport"];
+        $smtpUsername = $data["smtpusername"];
+        $smtpPassword = $data["smtppassword"];
+
+        $mail = new PHPMailer(true);
+        $mail->isSMTP();
+
+        $mail->Host = $smtpAddress;
+        $mail->SMTPAuth = true;
+        $mail->Username = $smtpUsername;
+        $mail->Password = $smtpPassword;
+        $mail->SMTPSecure = 'tls';
+        $mail->Port = $smtpPort;
+
+        $getUser = "SELECT * FROM user WHERE id = 1";
+        $user = $db->querySingle($getUser, true);
+        $email = $user['email'];
+        $name = $user['username'];
+
+        $mail->setFrom('wallos@wallosapp.com', 'Wallos App');
+        $mail->addAddress($email, $name);
+
+        $mail->Subject = 'Wallos Notification';
+        $mail->Body = 'This is a test notification. If you\'re seeing this, the configuration is correct.';
+
+        if ($mail->send()) {
+            $response = [
+                "success" => true,
+            ];
+            echo json_encode($response);
+        } else {
+            $response = [
+                "success" => false,
+                "errorMessage" => "Error sending email." . $mail->ErrorInfo
+            ];
+            echo json_encode($response);
+        }
+
+    }
+}
+
+?>

endpoints/subscription/add.php

@@ -144,6 +144,7 @@
             $notes = $_POST["notes"];
             $logoUrl = $_POST['logo-url'];
             $logo = "";
+            $notify = isset($_POST['notifications']) ? true : false;
 
             if($logoUrl !== "") {
                 $logo = getLogoFromUrl($logoUrl, '../../images/uploads/logos/', $name);
@@ -155,15 +156,15 @@
 
             if (!$isEdit) {
                 $sql = "INSERT INTO subscriptions (name, logo, price, currency_id, next_payment, cycle, frequency, notes, 
-                        payment_method_id, payer_user_id, category_id) 
+                        payment_method_id, payer_user_id, category_id, notify) 
                         VALUES (:name, :logo, :price, :currencyId, :nextPayment, :cycle, :frequency, :notes, 
-                        :paymentMethodId, :payerUserId, :categoryId)";
+                        :paymentMethodId, :payerUserId, :categoryId, :notify)";
             } else {
                 $id = $_POST['id'];
                 if ($logo != "") {
-                    $sql = "UPDATE subscriptions SET name = :name, logo = :logo, price = :price, currency_id = :currencyId, next_payment = :nextPayment, cycle = :cycle, frequency = :frequency, notes = :notes, payment_method_id = :paymentMethodId, payer_user_id = :payerUserId, category_id = :categoryId WHERE id = :id";
+                    $sql = "UPDATE subscriptions SET name = :name, logo = :logo, price = :price, currency_id = :currencyId, next_payment = :nextPayment, cycle = :cycle, frequency = :frequency, notes = :notes, payment_method_id = :paymentMethodId, payer_user_id = :payerUserId, category_id = :categoryId, notify = :notify WHERE id = :id";
                 } else {
-                    $sql = "UPDATE subscriptions SET name = :name, price = :price, currency_id = :currencyId, next_payment = :nextPayment, cycle = :cycle, frequency = :frequency, notes = :notes, payment_method_id = :paymentMethodId, payer_user_id = :payerUserId, category_id = :categoryId WHERE id = :id";
+                    $sql = "UPDATE subscriptions SET name = :name, price = :price, currency_id = :currencyId, next_payment = :nextPayment, cycle = :cycle, frequency = :frequency, notes = :notes, payment_method_id = :paymentMethodId, payer_user_id = :payerUserId, category_id = :categoryId, notify = :notify WHERE id = :id";
                 }
             }
 
@@ -184,6 +185,7 @@
             $stmt->bindParam(':paymentMethodId', $paymentMethodId, SQLITE3_INTEGER);
             $stmt->bindParam(':payerUserId', $payerUserId, SQLITE3_INTEGER);
             $stmt->bindParam(':categoryId', $categoryId, SQLITE3_INTEGER);
+            $stmt->bindParam(':notify', $notify, SQLITE3_INTEGER);
             
             if ($stmt->execute()) {
                 $success['status'] = "Success";

endpoints/subscription/get.php

@@ -24,6 +24,7 @@
                 $subscriptionData['payment_method_id'] = $row['payment_method_id'];
                 $subscriptionData['payer_user_id'] = $row['payer_user_id'];
                 $subscriptionData['category_id'] = $row['category_id'];
+                $subscriptionData['notify'] = $row['notify'];
 
                 $subscriptionJson = json_encode($subscriptionData);
                 header('Content-Type: application/json');

index.php

@@ -26,6 +26,16 @@
     }
   }
 
+  $notificationsEnabled = false;
+  $query = "SELECT enabled FROM notifications WHERE id = 1";
+  $result = $db->query($query);
+  if ($result) {
+      $row = $result->fetchArray(SQLITE3_ASSOC);
+      if ($row) {
+          $notificationsEnabled = $row['enabled'];
+      }
+  }
+
   $headerClass = count($subscriptions) > 0 ? "main-actions" : "main-actions hidden";
   $defaultLogo = $theme == "light" ? "images/wallos.png" : "images/walloswhite.png";
 ?>
@@ -229,6 +239,17 @@
             <input type="text" id="notes" name="notes" placeholder="Notes">
           </div>
 
+          <?php
+            if ($notificationsEnabled) {
+          ?>
+          <div class="form-group-inline">
+            <input type="checkbox" id="notifications" name="notifications">
+            <label for="notifications">Enable Notifications for this subscription</label>
+          </div>
+          <?php
+            }
+          ?>
+
           <div class="buttons">
                 <input type="button" value="Delete" class="warning-button left" id="deletesub" style="display: none">
                 <input type="button" value="Cancel" class="secondary-button" onClick="closeAddSubscription()">

libs/PHPMailer/Exception.php

@@ -0,0 +1,40 @@
+<?php
+
+/**
+ * PHPMailer Exception class.
+ * PHP Version 5.5.
+ *
+ * @see       https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
+ *
+ * @author    Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
+ * @author    Jim Jagielski (jimjag) <jimjag@gmail.com>
+ * @author    Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
+ * @author    Brent R. Matzelle (original founder)
+ * @copyright 2012 - 2020 Marcus Bointon
+ * @copyright 2010 - 2012 Jim Jagielski
+ * @copyright 2004 - 2009 Andy Prevost
+ * @license   http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
+ * @note      This program is distributed in the hope that it will be useful - WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+namespace PHPMailer\PHPMailer;
+
+/**
+ * PHPMailer exception handler.
+ *
+ * @author Marcus Bointon <phpmailer@synchromedia.co.uk>
+ */
+class Exception extends \Exception
+{
+    /**
+     * Prettify error message output.
+     *
+     * @return string
+     */
+    public function errorMessage()
+    {
+        return '<strong>' . htmlspecialchars($this->getMessage(), ENT_COMPAT | ENT_HTML401) . "</strong><br />\n";
+    }
+}

scripts/dashboard.js

@@ -61,6 +61,9 @@ function fillEditFormFields(subscription) {
   const notes = document.querySelector("#notes");
   notes.value = subscription.notes;
 
+  const notifications = document.querySelector("#notifications");
+  notifications.checked = subscription.notify;
+
   const deleteButton = document.querySelector("#deletesub");
   deleteButton.style = 'display: block';
   deleteButton.setAttribute("onClick", `deleteSubscription(${subscription.id})`);

scripts/settings.js

@@ -468,6 +468,86 @@ function addFixerKeyButton() {
   });
 }
 
+function saveNotificationsButton() {
+  const button = document.getElementById("saveNotifications");
+  button.disabled = true;
+
+  const enabled = document.getElementById("notifications").checked ? 1 : 0;
+  const days = document.getElementById("days").value;
+  const smtpAddress = document.getElementById("smtpaddress").value;
+  const smtpPort = document.getElementById("smtpport").value;
+  const smtpUsername = document.getElementById("smtpusername").value;
+  const smtpPassword = document.getElementById("smtppassword").value;
+
+  const data = {
+    enabled: enabled,
+    days: days,
+    smtpaddress: smtpAddress,
+    smtpport: smtpPort,
+    smtpusername: smtpUsername,
+    smtppassword: smtpPassword
+  };
+
+  fetch('/endpoints/notifications/save.php', {
+    method: 'POST',
+    headers: {
+        'Content-Type': 'application/json'
+    },
+    body: JSON.stringify(data)
+  })
+  .then(response => response.json())
+  .then(data => {
+      if (data.success) {
+          showSuccessMessage("Notification settings saved successfully.");
+      } else {
+          showErrorMessage(data.errorMessage);
+      }
+      button.disabled = false;
+  })
+  .catch(error => {
+      showErrorMessage("Error saving notification data");
+      button.disabled = false;
+  });
+}
+
+function testNotificationButton()  {
+  const button = document.getElementById("testNotifications");
+  button.disabled = true;
+
+  const smtpAddress = document.getElementById("smtpaddress").value;
+  const smtpPort = document.getElementById("smtpport").value;
+  const smtpUsername = document.getElementById("smtpusername").value;
+  const smtpPassword = document.getElementById("smtppassword").value;
+
+  const data = {
+    smtpaddress: smtpAddress,
+    smtpport: smtpPort,
+    smtpusername: smtpUsername,
+    smtppassword: smtpPassword
+  };
+
+  fetch('/endpoints/notifications/sendtestmail.php', {
+    method: 'POST',
+    headers: {
+        'Content-Type': 'application/json'
+    },
+    body: JSON.stringify(data)
+  })
+  .then(response => response.json())
+  .then(data => {
+      if (data.success) {
+          showSuccessMessage("Notification sent successfully.");
+      } else {
+          showErrorMessage(data.errorMessage);
+      }
+      button.disabled = false;
+  })
+  .catch(error => {
+      showErrorMessage("Error sending notification");
+      button.disabled = false;
+  });
+}
+
 function switchTheme() {
   const darkThemeCss = document.querySelector("#dark-theme");
   darkThemeCss.disabled = !darkThemeCss.disabled;

settings.php

@@ -134,6 +134,75 @@
         </div>
     </section>
 
+    <?php
+        $sql = "SELECT * FROM notifications LIMIT 1";
+        $result = $db->query($sql);
+
+        $rowCount = 0;
+        while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
+            $notifications = $row;
+            $rowCount++;
+        }
+        
+        if ($rowCount == 0) {
+            $notifications['enabled'] = false;
+            $notifications['days'] = 1;
+            $notifications['smtp_address'] = "";
+            $notifications['smtp_port'] = "";
+            $notifications['smtp_username'] = "";
+            $notifications['smtp_password'] = "";
+        }
+
+    ?>
+
+    <section class="account-section">
+        <header>
+            <h2>Notifications</h2>
+        </header>
+        <div class="account-notifications">
+            <div class="form-group-inline">
+                <input type="checkbox" id="notifications" name="notifications" <?= $notifications['enabled'] ? "checked" : "" ?>>
+                <label for="notifications">Enable email notifications</label>
+            </div>
+            <div class="form-group">
+                <label for="days">Notify me: </label>
+                <select name="days" id="days">
+                <?php
+                    for ($i = 1; $i <= 7; $i++) {
+                        $dayText = $i > 1 ? "days" : "day";
+                        $selected = $i == $notifications['days'] ? "selected" : "";
+                        ?>
+                            <option value="<?= $i ?>" <?= $selected ?>>
+                                <?= $i ?> <?= $dayText ?> before
+                            </option>
+                        <?php
+                    }
+                ?>
+                </select>
+            </div>
+            <div class="form-group-inline">
+                <input type="text" name="smtpaddress" id="smtpaddress" placeholder="SMTP Address" value="<?= $notifications['smtp_address'] ?>" />
+                <input type="text" name="smtpport" id="smtpport" placeholder="Port" class="one-third"  value="<?= $notifications['smtp_port'] ?>" />
+            </div>
+            <div class="form-group-inline">
+                <input type="text" name="smtpusername" id="smtpusername" placeholder="SMTP Username"  value="<?= $notifications['smtp_username'] ?>" />
+            </div>
+            <div class="form-group-inline">
+                <input type="password" name="smtppassword" id="smtppassword" placeholder="SMTP Password"  value="<?= $notifications['smtp_password'] ?>" />
+            </div>
+            <div class="settings-notes">
+                <p>
+                    <i class="fa-solid fa-circle-info"></i> SMTP Password is transmitted and stored in plaintext. 
+                    For security, please create an account just for this.</p>
+                <p>
+            </div>
+            <div class="buttons">
+                <input type="button" class="secondary-button" value="Test" id="testNotifications" onClick="testNotificationButton()"/>
+                <input type="submit" value="Save" id="saveNotifications" onClick="saveNotificationsButton()"/>
+            </div>
+        </div>
+    </section>
+
     <?php
         $sql = "SELECT * FROM categories";
         $result = $db->query($sql);
@@ -436,7 +505,7 @@
             <h2>About and Credits</h2>
         </header>
         <div class="credits-list">
-            <p>Wallos v0.9</p>
+            <p>Wallos v1.0</p>
             <p>License: 
                 <span>
                     GPLv3

styles/styles.css

@@ -317,10 +317,6 @@ main > .contain {
   margin-bottom: 0px;
 }
 
-.account-section .account-settings-list .form-group-inline label {
-  font-size: 16px;
-}
-
 .user-form {
   display: flex;
   flex-direction: column;
@@ -424,13 +420,18 @@ main > .contain {
 .account-members .buttons,
 .account-currencies .buttons, 
 .account-fixer .buttons,
-.account-categories .buttons {
+.account-categories .buttons,
+.account-notifications .buttons {
   display: flex;
   justify-content: flex-end;
   align-items: center;
   gap: 30px;
 }
 
+.account-notifications .buttons {
+  gap: 15px;
+}
+
 .image-button {
   box-sizing: border-box;
   border: none;
@@ -563,7 +564,7 @@ label {
 
 .form-group-inline label {
   font-weight: 300;
-  font-size: 13px;
+  font-size: 16px;
   margin-bottom: 0px;
   margin-left: 0px;
   cursor: pointer;
@@ -591,6 +592,10 @@ select {
   box-sizing: border-box;
 }
 
+.one-third {
+  max-width: 33%;
+}
+
 select {
   cursor: pointer;
   height: 50px;