/**
 * 将 API 返回的 PascalCase 字段名转为前端使用的 camelCase（递归处理嵌套对象/数组）
 */
function toCamelCaseKey(key) {
	if (!key || typeof key !== 'string') return key;
	if (key[0] === key[0].toLowerCase()) return key;
	return key.charAt(0).toLowerCase() + key.slice(1);
}

export function normalizeApiKeys(value) {
	if (value === null || value === undefined) return value;
	if (Array.isArray(value)) {
		return value.map(item => normalizeApiKeys(item));
	}
	if (typeof value !== 'object') return value;

	const result = {};
	for (const [key, val] of Object.entries(value)) {
		result[toCamelCaseKey(key)] = normalizeApiKeys(val);
	}
	return result;
}

/** 兼容 API 返回 records / Records */
export function getApiRecords(data) {
	if (!data) return [];
	const records = data.records ?? data.Records;
	return Array.isArray(records) ? records : [];
}

export default normalizeApiKeys;