refactor: filetype 识别

src/common/file.ts

@@ -19,14 +19,6 @@ type Uri2LocalRes = {
     path: string
 }
 
-export function isGIF(path: string) {
-    const buffer = Buffer.alloc(4);
-    const fd = fs.openSync(path, 'r');
-    fs.readSync(fd, buffer, 0, 4, 0);
-    fs.closeSync(fd);
-    return buffer.toString() === 'GIF8';
-}
-
 // 定义一个异步函数来检查文件是否存在
 export function checkFileExist(path: string, timeout: number = 3000): Promise<void> {
     return new Promise((resolve, reject) => {

src/core/apis/file.ts

@@ -21,12 +21,13 @@ import * as fileType from 'file-type';
 import imageSize from 'image-size';
 import { ISizeCalculationResult } from 'image-size/dist/types/interface';
 import { RkeyManager } from '@/core/helper/rkey';
-import { calculateFileMD5, isGIF } from '@/common/file';
+import { calculateFileMD5 } from '@/common/file';
 import pathLib from 'node:path';
 import { defaultVideoThumbB64, getVideoInfo } from '@/common/video';
 import ffmpeg from 'fluent-ffmpeg';
 import { encodeSilk } from '@/common/audio';
 import { MessageContext } from '@/onebot/api';
+import { getFileTypeForSendType } from '../helper/msg';
 
 export class NTQQFileApi {
     context: InstanceContext;
@@ -130,7 +131,7 @@ export class NTQQFileApi {
                 fileName: fileName,
                 sourcePath: path,
                 original: true,
-                picType: isGIF(picPath) ? PicType.NEWPIC_GIF : PicType.NEWPIC_JPEG,
+                picType: await getFileTypeForSendType(picPath),
                 picSubType: subType,
                 fileUuid: '',
                 fileSubId: '',

src/core/helper/msg.ts

@@ -0,0 +1,14 @@
+import * as fileType from 'file-type';
+import { PicType } from '../types';
+export async function getFileTypeForSendType(picPath: string): Promise<PicType> {
+    const fileTypeResult = (await fileType.fileTypeFromFile(picPath))?.ext ?? 'jpg';
+    const picTypeMap: { [key: string]: PicType } = {
+        'webp': PicType.NEWPIC_WEBP,
+        'gif': PicType.NEWPIC_GIF,
+        'png': PicType.NEWPIC_APNG,
+        'jpg': PicType.NEWPIC_JPEG,
+        'jpeg': PicType.NEWPIC_JPEG,
+        'bmp': PicType.NEWPIC_BMP,
+    };
+    return picTypeMap[fileTypeResult] ?? PicType.NEWPIC_JPEG;
+}