feat: added file download functionality and improved api

src/main/ipc.ts

@@ -53,6 +53,7 @@ export function registerIpc(mainWindow: BrowserWindow, app: Electron.App) {
   ipcMain.handle('file:write', fileManager.writeFile)
   ipcMain.handle('file:saveImage', fileManager.saveImage)
   ipcMain.handle('file:base64Image', fileManager.base64Image)
+  ipcMain.handle('file:download', fileManager.downloadFile)
 
   ipcMain.handle('minapp', (_, args) => {
     createMinappWindow({

src/main/services/FileManager.ts

@@ -315,6 +315,86 @@ class FileManager {
       return null
     }
   }
+
+  public downloadFile = async (_: Electron.IpcMainInvokeEvent, url: string): Promise<FileType> => {
+    try {
+      const response = await fetch(url)
+      if (!response.ok) {
+        throw new Error(`HTTP error! status: ${response.status}`)
+      }
+
+      // 尝试从Content-Disposition获取文件名
+      const contentDisposition = response.headers.get('Content-Disposition')
+      let filename = 'download'
+
+      if (contentDisposition) {
+        const filenameMatch = contentDisposition.match(/filename="?(.+)"?/i)
+        if (filenameMatch) {
+          filename = filenameMatch[1]
+        }
+      }
+
+      // 如果URL中有文件名，使用URL中的文件名
+      const urlFilename = url.split('/').pop()
+      if (urlFilename && urlFilename.includes('.')) {
+        filename = urlFilename
+      }
+
+      // 如果文件名没有后缀，根据Content-Type添加后缀
+      if (!filename.includes('.')) {
+        const contentType = response.headers.get('Content-Type')
+        const ext = this.getExtensionFromMimeType(contentType)
+        filename += ext
+      }
+
+      const uuid = uuidv4()
+      const ext = path.extname(filename)
+      const destPath = path.join(this.storageDir, uuid + ext)
+
+      // 将响应内容写入文件
+      const buffer = Buffer.from(await response.arrayBuffer())
+      await fs.promises.writeFile(destPath, buffer)
+
+      const stats = await fs.promises.stat(destPath)
+      const fileType = getFileType(ext)
+
+      const fileMetadata: FileType = {
+        id: uuid,
+        origin_name: filename,
+        name: uuid + ext,
+        path: destPath,
+        created_at: stats.birthtime,
+        size: stats.size,
+        ext: ext,
+        type: fileType,
+        count: 1
+      }
+
+      return fileMetadata
+    } catch (error) {
+      logger.error('[FileManager] Download file error:', error)
+      throw error
+    }
+  }
+
+  private getExtensionFromMimeType(mimeType: string | null): string {
+    if (!mimeType) return '.bin'
+
+    const mimeToExtension: { [key: string]: string } = {
+      'image/jpeg': '.jpg',
+      'image/png': '.png',
+      'image/gif': '.gif',
+      'application/pdf': '.pdf',
+      'text/plain': '.txt',
+      'application/msword': '.doc',
+      'application/vnd.openxmlformats-officedocument.wordprocessingml.document': '.docx',
+      'application/zip': '.zip',
+      'application/x-zip-compressed': '.zip',
+      'application/octet-stream': '.bin'
+    }
+
+    return mimeToExtension[mimeType] || '.bin'
+  }
 }
 
 export default FileManager

src/preload/index.d.ts

@@ -42,6 +42,7 @@ declare global {
         save: (path: string, content: string | NodeJS.ArrayBufferView, options?: SaveDialogOptions) => void
         saveImage: (name: string, data: string) => void
         base64Image: (fileId: string) => Promise<{ mime: string; base64: string; data: string }>
+        download: (url: string) => Promise<FileType | null>
       }
     }
   }

src/preload/index.ts

@@ -35,7 +35,8 @@ const api = {
       ipcRenderer.invoke('file:save', path, content, options),
     selectFolder: () => ipcRenderer.invoke('file:selectFolder'),
     saveImage: (name: string, data: string) => ipcRenderer.invoke('file:saveImage', name, data),
-    base64Image: (fileId: string) => ipcRenderer.invoke('file:base64Image', fileId)
+    base64Image: (fileId: string) => ipcRenderer.invoke('file:base64Image', fileId),
+    download: (url: string) => ipcRenderer.invoke('file:download', url)
   }
 }
 

src/renderer/src/hooks/usePaintings.ts

@@ -1,4 +1,5 @@
 import { TEXT_TO_IMAGES_MODELS } from '@renderer/config/models'
+import FileManager from '@renderer/services/file'
 import { useAppDispatch, useAppSelector } from '@renderer/store'
 import { addPainting, removePainting, updatePainting, updatePaintings } from '@renderer/store/paintings'
 import { Painting } from '@renderer/types'
@@ -27,7 +28,8 @@ export function usePaintings() {
       dispatch(addPainting(newPainting))
       return newPainting
     },
-    removePainting: (painting: Painting) => {
+    removePainting: async (painting: Painting) => {
+      FileManager.deleteFiles(painting.files)
       dispatch(removePainting(painting))
     },
     updatePainting: (painting: Painting) => {

src/renderer/src/pages/paintings/PaintingsList.tsx

@@ -1,6 +1,7 @@
 import { DeleteOutlined } from '@ant-design/icons'
 import DragableList from '@renderer/components/DragableList'
 import { usePaintings } from '@renderer/hooks/usePaintings'
+import FileManager from '@renderer/services/file'
 import { Painting } from '@renderer/types'
 import { classNames } from '@renderer/utils'
 import { Popconfirm } from 'antd'
@@ -31,9 +32,9 @@ const PaintingsList: FC<PaintingsListProps> = ({ paintings, selectedPainting, on
           <CanvasWrapper key={item.id}>
             <Canvas
               className={classNames(selectedPainting.id === item.id && 'selected')}
-              onClick={() => onSelectPainting(item)}
+              onClick={() => onSelectPainting(item)}>
-              thumbnail={item.urls[0]}
+              {item.files[0] && <ThumbnailImage src={FileManager.getFileUrl(item.files[0])} alt="" />}
-            />
+            </Canvas>
             <DeleteButton>
               <Popconfirm
                 title={t('images.button.delete.image.confirm')}
@@ -73,16 +74,15 @@ const CanvasWrapper = styled.div`
   }
 `
 
-const Canvas = styled.div<{ thumbnail?: string }>`
+const Canvas = styled.div`
   width: 80px;
   height: 80px;
   background-color: var(--color-background-soft);
-  background-image: ${(props) => (props.thumbnail ? `url(${props.thumbnail})` : 'none')};
-  background-size: cover;
-  background-position: center;
   cursor: pointer;
   transition: background-color 0.2s ease;
   border: 1px solid var(--color-background-soft);
+  overflow: hidden;
+  position: relative;
 
   &.selected {
     border: 1px solid var(--color-primary);
@@ -93,6 +93,13 @@ const Canvas = styled.div<{ thumbnail?: string }>`
   }
 `
 
+const ThumbnailImage = styled.img`
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  display: block;
+`
+
 const DeleteButton = styled.div.attrs({ className: 'delete-button' })`
   position: absolute;
   top: 4px;

src/renderer/src/pages/paintings/PaintingsPage.tsx

@@ -14,8 +14,9 @@ import { usePaintings } from '@renderer/hooks/usePaintings'
 import { useProviders } from '@renderer/hooks/useProvider'
 import AiProvider from '@renderer/providers/AiProvider'
 import { getProviderByModel } from '@renderer/services/assistant'
+import FileManager from '@renderer/services/file'
 import { DEFAULT_PAINTING } from '@renderer/store/paintings'
-import { Painting } from '@renderer/types'
+import { FileType, Painting } from '@renderer/types'
 import { getErrorMessage } from '@renderer/utils'
 import { Button, Input, InputNumber, Radio, Select, Slider, Spin, Tooltip } from 'antd'
 import TextArea from 'antd/es/input/TextArea'
@@ -97,7 +98,7 @@ const PaintingsPage: FC = () => {
   }
 
   const onGenerate = async () => {
-    if (painting.urls.length > 0) {
+    if (painting.files.length > 0) {
       const confirmed = await window.modal.confirm({
         content: t('images.regenerate.confirm'),
         centered: true
@@ -106,9 +107,12 @@ const PaintingsPage: FC = () => {
       if (!confirmed) {
         return
       }
+
+      await FileManager.deleteFiles(painting.files)
     }
 
     const prompt = textareaRef.current?.resizableTextArea?.textArea?.value || ''
+
     updatePaintingState({ prompt })
 
     const model = TEXT_TO_IMAGES_MODELS.find((m) => m.id === painting.model)
@@ -137,7 +141,22 @@ const PaintingsPage: FC = () => {
       })
 
       if (urls.length > 0) {
-        updatePaintingState({ urls })
+        const downloadedFiles = await Promise.all(
+          urls.map(async (url) => {
+            try {
+              return await window.api.file.download(url)
+            } catch (error) {
+              console.error('Failed to download image:', error)
+              return null
+            }
+          })
+        )
+
+        const validFiles = downloadedFiles.filter((file): file is FileType => file !== null)
+
+        await FileManager.addFiles(validFiles)
+
+        updatePaintingState({ files: validFiles })
       }
     } catch (error: unknown) {
       if (error instanceof Error && error.name !== 'AbortError') {
@@ -158,12 +177,17 @@ const PaintingsPage: FC = () => {
     size && updatePaintingState({ imageSize: size.value })
   }
 
+  const getCurrentImageUrl = () => {
+    const currentFile = painting.files[currentImageIndex]
+    return currentFile ? FileManager.getFileUrl(currentFile) : ''
+  }
+
   const nextImage = () => {
-    setCurrentImageIndex((prev) => (prev + 1) % painting.urls.length)
+    setCurrentImageIndex((prev) => (prev + 1) % painting.files.length)
   }
 
   const prevImage = () => {
-    setCurrentImageIndex((prev) => (prev - 1 + painting.urls.length) % painting.urls.length)
+    setCurrentImageIndex((prev) => (prev - 1 + painting.files.length) % painting.files.length)
   }
 
   const onDeletePainting = (paintingToDelete: Painting) => {
@@ -299,15 +323,15 @@ const PaintingsPage: FC = () => {
         <MainContainer>
           <Artboard>
             <LoadingContainer spinning={isLoading}>
-              {painting.urls.length > 0 ? (
+              {painting.files.length > 0 ? (
                 <ImageContainer>
-                  {painting.urls.length > 1 && (
+                  {painting.files.length > 1 && (
                     <NavigationButton onClick={prevImage} style={{ left: 10 }}>
                       ←
                     </NavigationButton>
                   )}
                   <ImagePreview
-                    src={painting.urls[currentImageIndex]}
+                    src={getCurrentImageUrl()}
                     preview={{ mask: false }}
                     style={{
                       width: '70vh',
@@ -317,13 +341,13 @@ const PaintingsPage: FC = () => {
                       cursor: 'pointer'
                     }}
                   />
-                  {painting.urls.length > 1 && (
+                  {painting.files.length > 1 && (
                     <NavigationButton onClick={nextImage} style={{ right: 10 }}>
                       →
                     </NavigationButton>
                   )}
                   <ImageCounter>
-                    {currentImageIndex + 1} / {painting.urls.length}
+                    {currentImageIndex + 1} / {painting.files.length}
                   </ImageCounter>
                 </ImageContainer>
               ) : (

src/renderer/src/services/file.ts

@@ -9,6 +9,23 @@ class FileManager {
     return files
   }
 
+  static async addFile(file: FileType): Promise<FileType> {
+    const fileRecord = await db.files.get(file.id)
+
+    if (fileRecord) {
+      await db.files.update(fileRecord.id, { ...fileRecord, count: fileRecord.count + 1 })
+      return fileRecord
+    }
+
+    await db.files.add(file)
+
+    return file
+  }
+
+  static async addFiles(files: FileType[]): Promise<FileType[]> {
+    return Promise.all(files.map((file) => this.addFile(file)))
+  }
+
   static async uploadFile(file: FileType): Promise<FileType> {
     const uploadFile = await window.api.file.upload(file)
     const fileRecord = await db.files.get(uploadFile.id)
@@ -50,12 +67,12 @@ class FileManager {
       return
     }
 
-    db.files.delete(id)
+    await db.files.delete(id)
     await window.api.file.delete(id + file.ext)
   }
 
-  static async deleteFiles(ids: string[]): Promise<void> {
+  static async deleteFiles(files: FileType[]): Promise<void> {
-    await Promise.all(ids.map((id) => this.deleteFile(id)))
+    await Promise.all(files.map((file) => this.deleteFile(file.id)))
   }
 
   static async allFiles(): Promise<FileType[]> {

src/renderer/src/services/messages.ts

@@ -39,7 +39,7 @@ export function getContextCount(assistant: Assistant, messages: Message[]) {
 }
 
 export function deleteMessageFiles(message: Message) {
-  message.files && FileManager.deleteFiles(message.files.map((f) => f.id))
+  message.files && FileManager.deleteFiles(message.files)
 }
 
 export async function locateToMessage(navigate: NavigateFunction, message: Message) {

src/renderer/src/types/index.ts

@@ -99,6 +99,7 @@ export interface Painting {
   steps?: number
   guidanceScale?: number
   model?: string
+  status?: 'generating' | 'downloading' | 'completed' | 'error'
 }
 
 export type MinAppType = {