import dayjs from 'dayjs';
import type { UploadExpiryPreset } from '@/types/upload/UploadExpiryPreset';
import type { UploadExpiryOffset } from '@/types/upload/UploadExpiryOffset';

const EXPIRY_OFFSET: Record<Exclude<UploadExpiryPreset, 'never'>, UploadExpiryOffset> = {
    '1h': { amount: 1, unit: 'hour' },
    '24h': { amount: 24, unit: 'hour' },
    '7d': { amount: 7, unit: 'day' },
    '30d': { amount: 30, unit: 'day' }
};

export const resolveUploadBatchExpiresAt = (preset: UploadExpiryPreset): string | null => {
    if (preset === 'never') {
        return null;
    }

    const { amount, unit } = EXPIRY_OFFSET[preset];

    return dayjs().add(amount, unit).toISOString();
};