Method isGifMedia

rev/rev.ts:381–392

(media: any)

		}
		return null;
	}

	private isGifMedia(media: any): boolean {
		if (media instanceof Api.MessageMediaDocument) {
			const doc = media.document as Api.Document;
			const fileName = this.getFileNameFromDocument(doc);
			// .gif.mp4 按 GIF 处理（使用调色板优化）
			if (fileName && fileName.toLowerCase().endsWith('.gif.mp4')) {
				return true;
			}
			return (doc?.mimeType || '').toLowerCase().includes('gif');
		}
		return false;
	}