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fluxer_api/src/unfurler/resolvers/ImageResolver.ts

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import type {MessageEmbedResponse} from '~/channel/EmbedTypes';
+import {BaseResolver} from '~/unfurler/resolvers/BaseResolver';
+import {buildEmbedMediaPayload} from '~/unfurler/resolvers/media/MediaMetadataHelpers';
+
+export class ImageResolver extends BaseResolver {
+	match(_url: URL, mimeType: string, _content: Uint8Array): boolean {
+		return mimeType.startsWith('image/');
+	}
+
+	async resolve(url: URL, content: Uint8Array, isNSFWAllowed: boolean = false): Promise<Array<MessageEmbedResponse>> {
+		const metadata = await this.mediaService.getMetadata({
+			type: 'base64',
+			base64: Buffer.from(content).toString('base64'),
+			isNSFWAllowed,
+		});
+		const embed: MessageEmbedResponse = {
+			type: 'image',
+			url: url.href,
+			thumbnail: buildEmbedMediaPayload(url.href, metadata),
+		};
+		return [embed];
+	}
+}