feat(desktop): open attachments in active project (#31192)

packages/desktop/src/main/ipc.ts

@@ -1,10 +1,13 @@
 import { execFile } from "node:child_process"
+import { stat } from "node:fs/promises"
+import { basename } from "node:path"
 import { app, BrowserWindow, Notification, clipboard, dialog, ipcMain, shell } from "electron"
 import type { IpcMainEvent, IpcMainInvokeEvent } from "electron"
 import type { DesktopMenuAction } from "@opencode-ai/app/desktop-menu"
 
 import type { FatalRendererError, ServerReadyData, TitlebarTheme } from "../preload/types"
 import { runDesktopMenuAction } from "./desktop-menu-actions"
+import { assertAttachmentBudget, createPickedFileAuthorizations } from "./attachment-picker"
 import { getStore } from "./store"
 import { getPinchZoomEnabled, setPinchZoomEnabled, setTitlebar, updateTitlebar } from "./windows"
 import type { UpdaterController } from "./updater-controller"
@@ -15,6 +18,8 @@ const pickerFilters = (ext?: string[]) => {
   return [{ name: "Files", extensions: ext }]
 }
 
+const pickedFiles = createPickedFileAuthorizations()
+
 type Deps = {
   killSidecar: () => Promise<void> | void
   relaunch: () => void
@@ -115,8 +120,8 @@ export function registerIpcHandlers(deps: Deps) {
   ipcMain.handle(
     "open-file-picker",
     async (
-      _event: IpcMainInvokeEvent,
-      opts?: { multiple?: boolean; title?: string; defaultPath?: string; accept?: string[]; extensions?: string[] },
+      event: IpcMainInvokeEvent,
+      opts?: { multiple?: boolean; title?: string; defaultPath?: string; extensions?: string[] },
     ) => {
       const result = await dialog.showOpenDialog({
         properties: ["openFile", ...(opts?.multiple ? ["multiSelections" as const] : [])],
@@ -125,10 +130,23 @@ export function registerIpcHandlers(deps: Deps) {
         filters: pickerFilters(opts?.extensions),
       })
       if (result.canceled) return null
-      return opts?.multiple ? result.filePaths : result.filePaths[0]
+      const files = await Promise.all(
+        result.filePaths.map(async (filePath) => ({ path: filePath, name: basename(filePath), size: (await stat(filePath)).size })),
+      )
+      assertAttachmentBudget(files)
+      const token = pickedFiles.add(event.sender.id, result.filePaths)
+      return { token, files }
     },
   )
 
+  ipcMain.handle("read-picked-file", async (event: IpcMainInvokeEvent, token: string, filePath: string) => {
+    return pickedFiles.read(event.sender.id, token, filePath)
+  })
+
+  ipcMain.handle("release-picked-files", (event: IpcMainInvokeEvent, token: string) => {
+    pickedFiles.release(event.sender.id, token)
+  })
+
   ipcMain.handle(
     "save-file-picker",
     async (_event: IpcMainInvokeEvent, opts?: { title?: string; defaultPath?: string }) => {