/**
 * Заменяет все "некрасивые" значения в объекте или массиве на дефис.
 * - null
 * - "undefined" (строка)
 * - undefined
 * - пустая строка ""
 */
import dayjs from 'dayjs';

const isDateKey = (key: string): boolean => {
    // Покрываем: _at, _date, _time, _seen, timestamp, last_login, date, time и т.д.
    const datePatterns = /_(at|date|time|seen)$|^(date|time|timestamp|last_login)$/;
    return datePatterns.test(key);
};

const formatDateValue = (value: unknown): string => {
    if (typeof value !== 'string' || value === '-' || value === '') return value as string;
    const d = dayjs(value);
    if (!d.isValid()) return value;
    if (value.includes('T') || value.length > 10) {
        return d.format('DD.MM.YYYY HH:mm');
    }
    return d.format('DD.MM.YYYY');
};

export const normalizeData = <T>(data: T): T => {
    if (data === null || data === undefined || data === 'undefined' || data === '') {
        return '-' as unknown as T;
    }

    if (Array.isArray(data)) {
        return data.map(item => normalizeData(item)) as unknown as T;
    }

    if (typeof data === 'object' && data !== null) {
        const result: Record<string, any> = {};
        for (const [key, value] of Object.entries(data)) {
            let normalized = normalizeData(value);
            if (isDateKey(key) && typeof normalized === 'string' && normalized !== '-') {
                normalized = formatDateValue(normalized);
            }
            result[key] = normalized;
        }
        return result as T;
    }

    return data;
};