refactor(ocr): streamline OCR service registration and improve image preprocessing

- Simplified the registration of the system OCR service by removing the conditional check for Linux.
- Updated SystemOcrService to directly import necessary modules, enhancing clarity.
- Refactored image preprocessing to use a static import of the 'sharp' library for better performance.

scripts/before-pack.js

@@ -7,15 +7,12 @@ const allArm64 = {
   '@img/sharp-darwin-arm64': '0.34.3',
   '@img/sharp-win32-arm64': '0.34.3',
   '@img/sharp-linux-arm64': '0.34.3',
-  '@img/sharp-linuxmusl-arm64': '0.34.3',
 
   '@img/sharp-libvips-darwin-arm64': '1.2.0',
   '@img/sharp-libvips-linux-arm64': '1.2.0',
-  '@img/sharp-libvips-linuxmusl-arm64': '1.2.0',
 
   '@libsql/darwin-arm64': '0.4.7',
   '@libsql/linux-arm64-gnu': '0.4.7',
-  '@libsql/linux-arm64-musl': '0.4.7',
   '@strongtz/win32-arm64-msvc': '0.4.7',
 
   '@napi-rs/system-ocr-darwin-arm64': '1.0.2',
@@ -25,16 +22,13 @@ const allArm64 = {
 const allX64 = {
   '@img/sharp-darwin-x64': '0.34.3',
   '@img/sharp-linux-x64': '0.34.3',
-  '@img/sharp-linuxmusl-x64': '0.34.3',
   '@img/sharp-win32-x64': '0.34.3',
 
   '@img/sharp-libvips-darwin-x64': '1.2.0',
   '@img/sharp-libvips-linux-x64': '1.2.0',
-  '@img/sharp-libvips-linuxmusl-x64': '1.2.0',
 
   '@libsql/darwin-x64': '0.4.7',
   '@libsql/linux-x64-gnu': '0.4.7',
-  '@libsql/linux-x64-musl': '0.4.7',
   '@libsql/win32-x64-msvc': '0.4.7',
 
   '@napi-rs/system-ocr-darwin-x64': '1.0.2',

src/main/services/ocr/OcrService.ts

@@ -2,6 +2,7 @@ import { loggerService } from '@logger'
 import { isLinux } from '@main/constant'
 import { BuiltinOcrProviderIds, OcrHandler, OcrProvider, OcrResult, SupportedOcrFile } from '@types'
 
+import { systemOcrService } from './builtin/SystemOcrService'
 import { tesseractService } from './builtin/TesseractService'
 
 const logger = loggerService.withContext('OcrService')
@@ -34,7 +35,4 @@ export const ocrService = new OcrService()
 // Register built-in providers
 ocrService.register(BuiltinOcrProviderIds.tesseract, tesseractService.ocr.bind(tesseractService))
 
-if (!isLinux) {
+!isLinux && ocrService.register(BuiltinOcrProviderIds.system, systemOcrService.ocr.bind(systemOcrService))
-  const { systemOcrService } = require('./builtin/SystemOcrService')
-  ocrService.register(BuiltinOcrProviderIds.system, systemOcrService.ocr.bind(systemOcrService))
-}

src/main/services/ocr/builtin/SystemOcrService.ts

@@ -1,4 +1,4 @@
-import { isLinux, isWin } from '@main/constant'
+import { isWin } from '@main/constant'
 import { loadOcrImage } from '@main/utils/ocr'
 import {
   ImageFileMetadata,
@@ -9,6 +9,7 @@ import {
 } from '@types'
 
 import { OcrBaseService } from './OcrBaseService'
+import { OcrAccuracy, recognize } from '@napi-rs/system-ocr'
 
 // const logger = loggerService.withContext('SystemOcrService')
 export class SystemOcrService extends OcrBaseService {
@@ -17,11 +18,6 @@ export class SystemOcrService extends OcrBaseService {
   }
 
   private async ocrImage(file: ImageFileMetadata, options?: OcrSystemConfig): Promise<OcrResult> {
-    if (isLinux) {
-      return { text: '' }
-    }
-
-    const { OcrAccuracy, recognize } = require('@napi-rs/system-ocr')
     const buffer = await loadOcrImage(file)
     const langs = isWin ? options?.langs : undefined
     const result = await recognize(buffer, OcrAccuracy.Accurate, langs)

src/main/utils/ocr.ts

@@ -1,8 +1,8 @@
 import { ImageFileMetadata } from '@types'
 import { readFile } from 'fs/promises'
+import sharp from 'sharp'
 
 const preprocessImage = async (buffer: Buffer): Promise<Buffer> => {
-  const sharp = require('sharp')
   return sharp(buffer)
     .grayscale() // 转为灰度
     .normalize()