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src/services/companyImport/imageHasher.js

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+// MARK: - Imports
+// #region Imports
+import sharp from 'sharp';
+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.
+ *
+ * @param {Buffer} buffer
+ * @returns {Promise<{base62: string, width: number, height: number, hashLength: number}|null>}
+ */
+export async function computeSkeleHash(buffer) {
+    try {
+        const { data, info } = await sharp(buffer)
+            .rotate()
+            .resize({ width: 200, height: 200, fit: 'inside' })
+            .ensureAlpha()
+            .raw()
+            .toBuffer({ resolveWithObject: true });
+
+        const result = await encodeRGBA(info.width, info.height, data);
+        return {
+            base62: result.base62,
+            width: info.width,
+            height: info.height,
+            hashLength: result.hash?.length ?? 0,
+        };
+    } catch (err) {
+        log.warn('Failed to compute skelehash for image:', err.message);
+        return null;
+    }
+}
+
+// #endregion