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stats.php
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stats.php
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<?php
require_once 'includes/header.php';
function getPricePerMonth($cycle, $frequency, $price) {
switch ($cycle) {
case 1:
$numberOfPaymentsPerMonth = (30 / $frequency);
return $price * $numberOfPaymentsPerMonth;
break;
case 2:
$numberOfPaymentsPerMonth = (4.35 / $frequency);
return $price * $numberOfPaymentsPerMonth;
break;
case 3:
$numberOfPaymentsPerMonth = (1 / $frequency);
return $price * $numberOfPaymentsPerMonth;
break;
case 4:
$numberOfMonths = (12 * $frequency);
return $price / $numberOfMonths;
break;
}
}
function getPriceConverted($price, $currency, $database) {
$query = "SELECT rate FROM currencies WHERE id = :currency";
$stmt = $database->prepare($query);
$stmt->bindParam(':currency', $currency, SQLITE3_INTEGER);
$result = $stmt->execute();
$exchangeRate = $result->fetchArray(SQLITE3_ASSOC);
if ($exchangeRate === false) {
return $price;
} else {
$fromRate = $exchangeRate['rate'];
return $price / $fromRate;
}
}
//Get household members
$members = array();
$query = "SELECT * FROM household";
$result = $db->query($query);
while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
$memberId = $row['id'];
$members[$memberId] = $row;
$memberCost[$memberId]['cost'] = 0;
$memberCost[$memberId]['name'] = $row['name'];
}
// Get categories
$categories = array();
$query = "SELECT * FROM categories";
$result = $db->query($query);
while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
$categoryId = $row['id'];
$categories[$categoryId] = $row;
$categoryCost[$categoryId]['cost'] = 0;
$categoryCost[$categoryId]['name'] = $row['name'];
}
// Get code of main currency to display on statistics
$query = "SELECT c.code
FROM currencies c
INNER JOIN user u ON c.id = u.main_currency
WHERE u.id = 1";
$stmt = $db->prepare($query);
$result = $stmt->execute();
$row = $result->fetchArray(SQLITE3_ASSOC);
$code = $row['code'];
// Calculate active subscriptions
$query = "SELECT COUNT(*) AS active_subscriptions FROM subscriptions";
$stmt = $db->prepare($query);
$stmt->bindParam(':criteria', $criteria, SQLITE3_INTEGER);
$result = $stmt->execute();
$row = $result->fetchArray(SQLITE3_ASSOC);
$activeSubscriptions = $row['active_subscriptions'];
// Calculate total monthly price
$mostExpensiveSubscription = 0;
$amountDueThisMonth = 0;
$totalCostPerMonth = 0;
$query = "SELECT name, price, frequency, cycle, currency_id, next_payment, payer_user_id, category_id FROM subscriptions";
$result = $db->query($query);
if ($result) {
while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
$subscriptions[] = $row;
}
if (isset($subscriptions)) {
foreach ($subscriptions as $subscription) {
$name = $subscription['name'];
$price = $subscription['price'];
$frequency = $subscription['frequency'];
$cycle = $subscription['cycle'];
$currency = $subscription['currency_id'];
$next_payment = $subscription['next_payment'];
$payerId = $subscription['payer_user_id'];
$categoryId = $subscription['category_id'];
$originalSubscriptionPrice = getPriceConverted($price, $currency, $db);
$price = getPricePerMonth($cycle, $frequency, $originalSubscriptionPrice);
$totalCostPerMonth += $price;
$memberCost[$payerId]['cost'] += $price;
$categoryCost[$categoryId]['cost'] += $price;
if ($price > $mostExpensiveSubscription) {
$mostExpensiveSubscription = $price;
}
// Calculate ammount due this month
$nextPaymentDate = DateTime::createFromFormat('Y-m-d', trim($next_payment));
$tomorrow = new DateTime('tomorrow');
$endOfMonth = new DateTime('last day of this month');
if ($nextPaymentDate >= $tomorrow && $nextPaymentDate <= $endOfMonth) {
$timesToPay = 1;
$daysInMonth = $endOfMonth->diff($tomorrow)->days + 1;
$daysRemaining = $endOfMonth->diff($nextPaymentDate)->days + 1;
if ($cycle == 1) {
$timesToPay = $daysRemaining / $frequency;
}
if ($cycle == 2) {
$weeksInMonth = ceil($daysInMonth / 7);
$weeksRemaining = ceil($daysRemaining / 7);
$timesToPay = $weeksRemaining / $frequency;
}
$amountDueThisMonth += $originalSubscriptionPrice * $timesToPay;
}
}
// Calculate yearly price
$totalCostPerYear = $totalCostPerMonth * 12;
// Calculate average subscription monthly cost
$averageSubscriptionCost = $totalCostPerMonth / $activeSubscriptions;
} else {
$totalCostPerYear = 0;
$averageSubscriptionCost = 0;
}
}
?>
<section class="contain">
<h2><?= translate('general_statistics', $i18n) ?></h2>
<div class="statistics">
<div class="statistic">
<span><?= $activeSubscriptions ?></span>
<div class="title"><?= translate('active_subscriptions', $i18n) ?></div>
</div>
<div class="statistic">
<span><?= CurrencyFormatter::format($totalCostPerMonth, $code) ?></span>
<div class="title"><?= translate('monthly_cost', $i18n) ?></div>
</div>
<div class="statistic">
<span><?= CurrencyFormatter::format($totalCostPerYear, $code) ?></span>
<div class="title"><?= translate('yearly_cost', $i18n) ?></div>
</div>
<div class="statistic">
<span><?= CurrencyFormatter::format($averageSubscriptionCost, $code) ?></span>
<div class="title"><?= translate('average_monthly', $i18n) ?></div>
</div>
<div class="statistic">
<span><?= CurrencyFormatter::format($mostExpensiveSubscription, $code) ?></span>
<div class="title"><?= translate('most_expensive', $i18n) ?></div>
</div>
<div class="statistic">
<span><?= CurrencyFormatter::format($amountDueThisMonth, $code) ?></span>
<div class="title"><?= translate('amount_due', $i18n) ?></div>
</div>
<?php
$numberOfElements = 6;
if (($numberOfElements + 1) % 3 == 0) {
?>
<div class="statistic empty"></div>
<?php
}
?>
</div>
<h2><?= translate('split_views', $i18n) ?></h2>
<div class="graphs">
<?php
$categoryDataPoints = [];
foreach ($categoryCost as $category) {
if ($category['cost'] != 0) {
$categoryDataPoints[] = [
"label" => $category['name'],
"y" => $category["cost"],
];
}
}
$showCategoryCostGraph = count($categoryDataPoints) > 1;
$memberDataPoints = [];
foreach ($memberCost as $member) {
if ($member['cost'] != 0) {
$memberDataPoints[] = [
"label" => $member['name'],
"y" => $member["cost"],
];
}
}
$showMemberCostGraph = count($memberDataPoints) > 1;
if ($showMemberCostGraph) {
?>
<section class="graph">
<header>
<?= translate('household_split', $i18n) ?>
<div class="sub-header">(<?= translate('monthly_cost', $i18n) ?>)</div>
</header>
<canvas id="memberSplitChart"></canvas>
</section>
<?php
}
if ($showCategoryCostGraph) {
?>
<section class="graph">
<header>
<?= translate('category_split', $i18n) ?>
<div class="sub-header">(<?= translate('monthly_cost', $i18n) ?>)</div>
</header>
<canvas id="categorySplitChart" style="height: 370px; width: 100%;"></canvas>
</section>
<?php
}
?>
</div>
</section>
<?php
if ($showCategoryCostGraph || $showMemberCostGraph) {
?>
<script src="scripts/libs/chart.js"></script>
<script type="text/javascript">
window.onload = function() {
loadGraph("categorySplitChart", <?php echo json_encode($categoryDataPoints, JSON_NUMERIC_CHECK); ?>, "<?= $code ?>", <?= $showCategoryCostGraph ?>);
loadGraph("memberSplitChart", <?php echo json_encode($memberDataPoints, JSON_NUMERIC_CHECK); ?>, "<?= $code ?>", <?= $showMemberCostGraph ?>);
}
</script>
<?php
}
?>
<script src="scripts/stats.js"></script>
<?php
require_once 'includes/footer.php';
?>