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

/**
 * Create or update a task category
 * POST: { BusinessID, TaskCategoryID?, Name, Color? }
 */

$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']);
}

try {
    $categoryID = (int) ($data['TaskCategoryID'] ?? 0);
    $categoryName = trim($data['Name'] ?? '');
    $categoryColor = trim($data['Color'] ?? '#6366f1');

    if (empty($categoryName)) {
        apiAbort(['OK' => false, 'ERROR' => 'missing_params', 'MESSAGE' => 'Name is required']);
    }

    // Validate color format - accept #RRGGBB or RRGGBB
    if (!preg_match('/^#[0-9A-Fa-f]{6}$/', $categoryColor)) {
        if (preg_match('/^[0-9A-Fa-f]{6}$/', $categoryColor)) {
            $categoryColor = '#' . $categoryColor;
        } else {
            $categoryColor = '#6366f1';
        }
    }

    if ($categoryID > 0) {
        // UPDATE
        $qCheck = queryOne("
            SELECT ID FROM TaskCategories WHERE ID = ? AND BusinessID = ?
        ", [$categoryID, $bizID]);

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

        queryTimed("
            UPDATE TaskCategories SET Name = ?, Color = ? WHERE ID = ?
        ", [$categoryName, $categoryColor, $categoryID]);

        jsonResponse(['OK' => true, 'CATEGORY_ID' => $categoryID, 'MESSAGE' => 'Category updated']);
    } else {
        // INSERT
        queryTimed("
            INSERT INTO TaskCategories (BusinessID, Name, Color)
            VALUES (?, ?, ?)
        ", [$bizID, $categoryName, $categoryColor]);

        $newID = (int) lastInsertId();
        jsonResponse(['OK' => true, 'CATEGORY_ID' => $newID, 'MESSAGE' => 'Category created']);
    }

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