
import module from 'node:crypto';
const { createHash } = module;

/**
 * UniquenessManager
 * Handles content hashing to prevent duplicate generation.
 */
export class UniquenessManager {
    /**
     * Generate a unique hash for a specific combination.
     * Format: {SiteID}_{AvatarID}_{Niche}_{City}_{PatternID}
     */
    static generateHash(siteId: string, avatarId: string, niche: string, city: string, patternId: string): string {
        const raw = `${siteId}_${avatarId}_${niche}_${city}_${patternId}`;
        return createHash('md5').update(raw).digest('hex');
    }

    /**
     * Check if a hash already exists in the database.
     * (Placeholder logic - real implementation queries Directus)
     */
    static async checkExists(client: any, hash: string): Promise<boolean> {
        try {
            // This would be a Directus query
            // const res = await client.request(readItems('generated_articles', { filter: { generation_hash: { _eq: hash } }, limit: 1 }));
            // return res.length > 0;
            return false; // For now
        } catch (e) {
            return false;
        }
    }
}
