Feature/purchase reminders

other/alarms.php

@@ -425,6 +425,17 @@ function insert_new(){
 		       "trying to insert the new alarm: " . $db->errorInfo(),
 		       $alarm=true);
   }
+
+  // If this is a purchase reminder, insert first dateplot row
+  if (str_contains($data["description"], "[purchase_reminders]")){
+    $query = "INSERT INTO dateplots_purchase_reminders (type, value) values (:i, :v)";
+    $stmt = $db->prepare($query);
+    $stmt->bindValue(':i', $latest_id);
+    $stmt->bindValue(':v', 0);
+    $stmt->execute();
+  }
+
+
   return true;
 }
 

other/order.php

@@ -0,0 +1,93 @@
+<?php
+include("../common_functions_v2.php");
+echo(html_header());
+
+$id = intval($_GET["id"] ?? 0);
+$action = trim(strtolower(htmlspecialchars($_GET["action"] ?? '')));
+
+$db = std_db($user='alarm_user');
+
+
+/** Produces the HTML for the existing purchase_reminders */
+function existing_purchase_reminders(){
+  global $db;
+
+  # Get the alarms
+  $query = "SELECT id, description FROM alarm WHERE description like \"[purchase_reminders]%\"";
+  $result = $db->query($query);
+
+  # Start the table
+  echo("<div style=\"width:45%;float:left\">");
+  echo("<h1><a id=\"existing\"></a>Existing ordering items</h1>\n");
+  echo("<table border=\"1\" class=\"nicetable\">\n");
+  echo("\n<tr>\n");
+  echo("<th>ID</th>\n<th>Description</th>\n<th>Value</th>\n<th colspan=3>Actions</th>\n");
+  echo("</tr>");
+
+  # Loop over alarms
+  while($row = $result->fetch()) {
+
+    $query = "select unix_timestamp(time), value from dateplots_purchase_reminders where type=" . $row[0] . " order by id desc limit 1";
+    // $latest_time = single_sql_value($db, $query, 0); Not really needed for now
+    $latest_value = single_sql_value($db, $query, 1);
+
+    echo("\n\n<tr>\n");
+    echo("<td>{$row[0]}</td>\n");
+    echo("<td>{$row[1]}</td>\n");
+    echo("<td>$latest_value</td>\n");
+    echo("<td><a href=\"order.php?id=" . $row[0] . "&action=qr\">QR</a></td>\n");
+    echo("<td><a href=\"order.php?id=" . $row[0] . "&action=reset\">Reset</a></td>\n");
+    echo("<td><a href=\"order.php?id=" . $row[0] . "\">Order</a></td>\n");
+    echo("</tr>");
+  }
+
+  # End the table
+  echo("\n\n</table>\n");
+  echo("</div>\n");
+}
+
+function update_value_in_purchase_reminders($value){
+  global $db;
+  global $id;
+  $query = "INSERT INTO dateplots_purchase_reminders (type, value) values (:i, :v)";
+  $stmt = $db->prepare($query);
+  $stmt->bindValue(':i', $id);
+  $stmt->bindValue(':v', $value);
+  $stmt->execute();
+}
+
+// Handle the given action
+
+if (($action === '') && ($id > 0)){
+  $query = "select unix_timestamp(time), value from dateplots_purchase_reminders where type=" . $id . " order by id desc limit 1";
+  // $latest_time = single_sql_value($db, $query, 0); Not really needed for now
+  $latest_value = single_sql_value($db, $query, 1);
+  update_value_in_purchase_reminders($latest_value + 1);
+  echo("<h1>Thank you for your notifying</h1>\n");
+}
+
+if ($action === 'reset'){
+  update_value_in_purchase_reminders(0);
+  echo("<h1>Thank you for ordering supplies</h1>\n");
+}
+
+if ($action=='qr'){
+  ob_start();
+  $url = $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
+  $command = './qr_generator.py ' . $id . ' ' . $url;
+  passthru($command, $return_code);
+  $content_grabbed=ob_get_contents();
+  ob_end_clean();
+  echo($content_grabbed);
+
+  echo("<h1>QR for item {$id}</h1>\n");
+  echo("<img src=\"../figures/qr_{$id}.png\">\n");
+}
+
+// Print the overview
+existing_purchase_reminders();
+
+echo("\n\n\n");
+echo(html_footer());
+
+?>

other/qr_generator.py

@@ -0,0 +1,30 @@
+#!/usr/bin/python3
+import qrcode
+import argparse
+
+from pathlib import Path
+
+
+def make_qr(order_type: int, url: str):
+    qr = qrcode.QRCode(
+        version=10,
+        error_correction=qrcode.constants.ERROR_CORRECT_H,
+        box_size=20,
+        border=4,
+    )
+    url = 'http://' + url + '?id={}'
+    url = url.format(order_type)
+    qr.add_data(url)
+    qr.make(fit=True)
+    img = qr.make_image(fill_color="black", back_color="white")
+    p = Path.cwd()
+
+    img.save(p.parents[0] / 'figures' / 'qr_{}.png'.format(order_type))
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser('QR generator for cinfdata ordering system')
+    parser.add_argument('id', type=int)
+    parser.add_argument('url', type=str)
+    args = parser.parse_args()
+    make_qr(args.id, args.url)