feat(ocr): 添加OCR提供者管理功能并改进错误处理

添加useOcrProviders钩子用于管理OCR提供者的添加和删除
当内置OCR提供者不存在时自动恢复默认配置
改进错误提示信息并增加国际化支持

src/renderer/src/hooks/useOcrProvider.ts

@@ -1,22 +1,76 @@
 import { loggerService } from '@logger'
+import { BUILTIN_OCR_PROVIDERS_MAP } from '@renderer/config/ocr'
 import { useAppSelector } from '@renderer/store'
-import { updateOcrProviderConfig } from '@renderer/store/ocr'
-import { OcrProviderConfig } from '@renderer/types'
+import { addOcrProvider, removeOcrProvider, updateOcrProviderConfig } from '@renderer/store/ocr'
+import { isBuiltinOcrProviderId, OcrProvider, OcrProviderConfig } from '@renderer/types'
 import { useTranslation } from 'react-i18next'
 import { useDispatch } from 'react-redux'
 
 const logger = loggerService.withContext('useOcrProvider')
 
+export const useOcrProviders = () => {
+  const providers = useAppSelector((state) => state.ocr.providers)
+  const dispatch = useDispatch()
+  const { t } = useTranslation()
+
+  /**
+   * 添加一个新的OCR服务提供者
+   * @param provider - OCR提供者对象，包含id和其他配置信息
+   * @throws {Error} 当尝试添加一个已存在ID的提供者时抛出错误
+   */
+  const addProvider = (provider: OcrProvider) => {
+    if (providers.some((p) => p.id === provider.id)) {
+      const msg = `Provider with id ${provider.id} already exists`
+      logger.error(msg)
+      window.message.error(t('ocr.error.provider.existing'))
+      throw new Error(msg)
+    }
+    dispatch(addOcrProvider(provider))
+  }
+
+  /**
+   * 移除一个OCR服务提供者
+   * @param id - 要移除的OCR提供者ID
+   * @throws {Error} 当尝试移除一个内置提供商时抛出错误
+   */
+  const removeProvider = (id: string) => {
+    if (isBuiltinOcrProviderId(id)) {
+      const msg = `Cannot remove builtin provider ${id}`
+      logger.error(msg)
+      window.message.error(t('ocr.error.provider.cannot_remove_builtin'))
+      throw new Error(msg)
+    }
+
+    dispatch(removeOcrProvider(id))
+  }
+
+  return { providers, addProvider, removeProvider }
+}
+
 export const useOcrProvider = (id: string) => {
   const { t } = useTranslation()
   const dispatch = useDispatch()
-  const providers = useAppSelector((state) => state.ocr.providers)
-  const provider = providers.find((p) => p.id === id)
+  const { providers, addProvider } = useOcrProviders()
+  let provider = providers.find((p) => p.id === id)
 
+  // safely fallback
   if (!provider) {
     logger.error(`Ocr Provider ${id} not found`)
-    window.message.error(t('ocr.provider.not_found'))
-    throw new Error(`Ocr Provider ${id} not found`)
+    window.message.error(t('ocr.error.provider.not_found'))
+    if (isBuiltinOcrProviderId(id)) {
+      try {
+        addProvider(BUILTIN_OCR_PROVIDERS_MAP[id])
+      } catch (e) {
+        logger.warn(`Add ${BUILTIN_OCR_PROVIDERS_MAP[id].name} failed. Just use temp provider from config.`)
+        window.message.warning(t('ocr.warning.provider.fallback', { name: BUILTIN_OCR_PROVIDERS_MAP[id].name }))
+      } finally {
+        provider = BUILTIN_OCR_PROVIDERS_MAP[id]
+      }
+    } else {
+      logger.warn(`Fallback to tesseract`)
+      window.message.warning(t('ocr.warning.provider.fallback', { name: 'Tesseract' }))
+      provider = BUILTIN_OCR_PROVIDERS_MAP.tesseract
+    }
   }
 
   const updateConfig = (update: Partial<OcrProviderConfig>) => {