<?php
require_once __DIR__ . '/../../helpers.php';
require_once __DIR__ . '/_cronUtils.php';
// No runAuth() — this is a cron/public endpoint

/**
 * Process all due scheduled tasks.
 * Called by cron every minute. Creates Tasks entries for any due ScheduledTaskDefinitions.
 */

try {
    $dueTasks = queryTimed("
        SELECT
            ID AS ScheduledTaskID,
            BusinessID,
            TaskCategoryID AS CategoryID,
            Title,
            Details,
            CronExpression,
            COALESCE(ScheduleType, 'cron') AS ScheduleType,
            IntervalMinutes
        FROM ScheduledTaskDefinitions
        WHERE IsActive = 1
          AND NextRunOn <= NOW()
    ");

    $createdTasks = [];

    foreach ($dueTasks as $task) {
        queryTimed("
            INSERT INTO Tasks (BusinessID, CategoryID, TaskTypeID, Title, Details, CreatedOn, ClaimedByUserID)
            VALUES (?, ?, 0, ?, ?, NOW(), 0)
        ", [
            $task['BusinessID'],
            $task['CategoryID'],
            $task['Title'],
            $task['Details'],
        ]);

        $newTaskID = (int) lastInsertId();

        // Calculate next run based on schedule type
        $st = $task['ScheduleType'];
        $interval = (int) ($task['IntervalMinutes'] ?? 0);

        if ($st === 'interval_after_completion' && $interval > 0) {
            $nextRunStr = null; // Paused until task completion
        } elseif ($st === 'interval' && $interval > 0) {
            $nextRun = new DateTime("+{$interval} minutes", new DateTimeZone('UTC'));
            $nextRunStr = $nextRun->format('Y-m-d H:i:s');
        } else {
            $nextRun = calculateNextRun($task['CronExpression']);
            $nextRunStr = $nextRun->format('Y-m-d H:i:s');
        }

        queryTimed("
            UPDATE ScheduledTaskDefinitions SET LastRunOn = NOW(), NextRunOn = ?
            WHERE ID = ?
        ", [$nextRunStr, $task['ScheduledTaskID']]);

        $createdTasks[] = [
            'ScheduledTaskID' => (int) $task['ScheduledTaskID'],
            'TaskID'          => $newTaskID,
            'BusinessID'      => (int) $task['BusinessID'],
            'Title'           => $task['Title'],
        ];
    }

    jsonResponse([
        'OK'            => true,
        'MESSAGE'       => 'Processed ' . count($createdTasks) . ' scheduled task(s)',
        'CREATED_TASKS' => $createdTasks,
        'CHECKED_COUNT' => count($dueTasks),
        'RAN_AT'        => gmdate('Y-m-d H:i:s'),
    ]);

} catch (Exception $e) {
    jsonResponse(['OK' => false, 'ERROR' => 'server_error', 'MESSAGE' => $e->getMessage()]);
}