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

/**
 * Delete (deactivate) a task category
 * POST: { BusinessID, TaskCategoryID }
 */

$data = readJsonBody();
global $businessId;

$bizID = 0;
if (isset($_GET['bid']) && is_numeric($_GET['bid'])) $bizID = (int) $_GET['bid'];
if ($bizID <= 0) $bizID = (int) ($data['BusinessID'] ?? 0);
if ($bizID <= 0) $bizID = $businessId;

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

$categoryID = (int) ($data['TaskCategoryID'] ?? 0);
if ($categoryID <= 0) {
    apiAbort(['OK' => false, 'ERROR' => 'missing_params', 'MESSAGE' => 'TaskCategoryID is required']);
}

try {
    // Verify ownership
    $qCheck = queryOne("
        SELECT ID FROM TaskCategories WHERE ID = ? AND BusinessID = ?
    ", [$categoryID, $bizID]);

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

    // Check if any tasks use this category
    $qTasks = queryOne("SELECT COUNT(*) as cnt FROM Tasks WHERE CategoryID = ?", [$categoryID]);

    if ((int) $qTasks['cnt'] > 0) {
        // Soft delete
        queryTimed("UPDATE TaskCategories SET IsActive = 0 WHERE ID = ?", [$categoryID]);
        jsonResponse(['OK' => true, 'MESSAGE' => "Category deactivated (has {$qTasks['cnt']} tasks)"]);
    } else {
        // Hard delete
        queryTimed("DELETE FROM TaskCategories WHERE ID = ?", [$categoryID]);
        jsonResponse(['OK' => true, 'MESSAGE' => 'Category deleted']);
    }

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