// MARK: - Imports
// #region Imports
import { optimizeImage } from 'wasm-image-optimization';
import { encodeRGBA } from 'skelehash-wasm';
import { createLogger } from '../../util/logger.js';
// #endregion

const log = createLogger('import');

// MARK: - SkeleHash Computation
// #region SkeleHash Computation

/**
 * Computes SkeleHash base62 hash for an image buffer or base64 string.
 *
 * @param {Buffer|string} buffer
 * @returns {Promise<{base62: string, width: number, height: number, hashLength: number}|null>}
 */
export async function computeSkeleHash(buffer) {
    if (!buffer) return null;
    let input = buffer;
    if (typeof input === 'string') {
        const base64Data = input.includes(',') ? input.split(',')[1] : input;
        input = Buffer.from(base64Data, 'base64');
    }
    const raw = await optimizeImage({
        image: input,
        width: 200,
        height: 200,
        fit: 'contain',
        format: 'raw',
    });

    const result = await encodeRGBA(raw.width, raw.height, raw.data);
    if (!result?.base62) {
        throw new Error('encodeRGBA failed to produce a base62 skelehash');
    }
    return {
        base62: result.base62,
        width: raw.width,
        height: raw.height,
        hashLength: result.hash?.length ?? 0,
    };
}

// #endregion