<?php

    require_once __DIR__ . '/../../includes/connect_endpoint_crontabs.php';

    $currentDate = new DateTime();
    $currentDateString = $currentDate->format('Y-m-d');

    $cycles = array();
    $query = "SELECT * FROM cycles";
    $result = $db->query($query);
    while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
        $cycleId = $row['id'];
        $cycles[$cycleId] = $row;
    }

    $query = "SELECT id, next_payment, frequency, cycle FROM subscriptions WHERE next_payment < :currentDate";
    $stmt = $db->prepare($query);
    $stmt->bindValue(':currentDate', $currentDate->format('Y-m-d'));
    $result = $stmt->execute();

    while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
        $subscriptionId = $row['id'];
        $nextPaymentDate = new DateTime($row['next_payment']);
        $frequency = $row['frequency'];
        $cycle = $cycles[$row['cycle']]['name'];

        // Calculate the interval to add based on the cycle
        $intervalSpec = "P";
        if ($cycle == 'Daily') {
            $intervalSpec .= "{$frequency}D";
        } elseif ($cycle === 'Weekly') {
            $intervalSpec .= "{$frequency}W";
        } elseif ($cycle === 'Monthly') {
            $intervalSpec .= "{$frequency}M";
        } elseif ($cycle === 'Yearly') {
            $intervalSpec .= "{$frequency}Y";
        }

        $interval = new DateInterval($intervalSpec);

        // Add intervals until the next payment date is in the future
        while ($nextPaymentDate < $currentDate) {
            $nextPaymentDate->add($interval);
        }

        // Update the subscription's next_payment date
        $updateQuery = "UPDATE subscriptions SET next_payment = :nextPaymentDate WHERE id = :subscriptionId";
        $updateStmt = $db->prepare($updateQuery);
        $updateStmt->bindValue(':nextPaymentDate', $nextPaymentDate->format('Y-m-d'));
        $updateStmt->bindValue(':subscriptionId', $subscriptionId);
        $updateStmt->execute();
    }

    $formattedDate = $currentDate->format('Y-m-d');

    $deleteQuery = "DELETE FROM last_update_next_payment_date";
    $deleteStmt = $db->prepare($deleteQuery);
    $deleteResult = $deleteStmt->execute();

    $query = "INSERT INTO last_update_next_payment_date (date) VALUES (:formattedDate)";
    $stmt = $db->prepare($query);
    $stmt->bindParam(':formattedDate', $currentDateString, SQLITE3_TEXT);
    $result = $stmt->execute();

    echo "Updated next payment dates";
?>