<?php
require_once __DIR__ . '/../helpers.php';
runAuth();

/**
 * Accept/claim a task
 * POST: { TaskID: int }
 */

$data = readJsonBody();
$taskID = (int) ($data['TaskID'] ?? 0);

if ($taskID <= 0) {
    apiAbort(['OK' => false, 'ERROR' => 'missing_params', 'MESSAGE' => 'TaskID is required.']);
}

try {
    global $userId;

    // Verify task exists and is unclaimed
    $qTask = queryOne("
        SELECT ID, ClaimedByUserID, BusinessID, OrderID
        FROM Tasks
        WHERE ID = ?
    ", [$taskID]);

    if (!$qTask) {
        apiAbort(['OK' => false, 'ERROR' => 'not_found', 'MESSAGE' => 'Task not found.']);
    }

    if ((int) $qTask['ClaimedByUserID'] > 0) {
        apiAbort(['OK' => false, 'ERROR' => 'already_accepted', 'MESSAGE' => 'Task has already been claimed.']);
    }

    // Update task to claimed
    queryTimed("
        UPDATE Tasks
        SET ClaimedByUserID = ?,
            ClaimedOn = NOW()
        WHERE ID = ?
          AND ClaimedByUserID = 0
    ", [$userId > 0 ? $userId : 1, $taskID]);

    jsonResponse([
        'OK' => true,
        'ERROR' => '',
        'MESSAGE' => 'Task claimed successfully.',
        'TaskID' => $taskID,
    ]);

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