refactor(tui): extract standalone package (#31193)

packages/tui/src/editor.ts

@@ -0,0 +1,84 @@
+import type { CliRenderer } from "@opentui/core"
+import { existsSync, readdirSync, readFileSync, statSync } from "node:fs"
+import { readFile, rm, writeFile } from "node:fs/promises"
+import os from "node:os"
+import path from "node:path"
+import { spawn } from "node:child_process"
+import { resolveZedDbPath, resolveZedSelection } from "./editor-zed"
+
+export async function openEditor(input: { value: string; renderer: CliRenderer; cwd?: string }) {
+  const editor = process.env.VISUAL || process.env.EDITOR
+  if (!editor) return
+  const file = path.join(os.tmpdir(), `${Date.now()}.md`)
+  await writeFile(file, input.value)
+  input.renderer.suspend()
+  input.renderer.currentRenderBuffer.clear()
+  try {
+    await new Promise<void>((resolve, reject) => {
+      const parts = editor.split(" ")
+      const child = spawn(parts[0]!, [...parts.slice(1), file], {
+        cwd: input.cwd && existsSync(input.cwd) ? input.cwd : process.cwd(),
+        stdio: "inherit",
+        shell: process.platform === "win32",
+      })
+      child.on("error", reject)
+      child.on("exit", (code, signal) => {
+        if (code === 0) return resolve()
+        reject(new Error(`Editor exited with ${signal ? `signal ${signal}` : `code ${code}`}`))
+      })
+    })
+    return (await readFile(file, "utf8")) || undefined
+  } finally {
+    await rm(file, { force: true }).catch(() => {})
+    input.renderer.currentRenderBuffer.clear()
+    input.renderer.resume()
+    input.renderer.requestRender()
+  }
+}
+
+export function discoverEditorConnection(directory: string) {
+  const root = path.join(os.homedir(), ".claude", "ide")
+  const contains = (parent: string) => {
+    const resolved = path.resolve(parent)
+    const relative = path.relative(resolved, path.resolve(directory))
+    return relative === "" || (!relative.startsWith("..") && !path.isAbsolute(relative)) ? resolved.length : 0
+  }
+  try {
+    return readdirSync(root)
+      .filter((entry) => entry.endsWith(".lock"))
+      .flatMap((entry) => {
+        const file = path.join(root, entry)
+        const port = Number.parseInt(path.basename(file, ".lock"), 10)
+        if (!Number.isInteger(port) || port <= 0 || port > 65535) return []
+        try {
+          const value = JSON.parse(readFileSync(file, "utf8")) as Record<string, unknown>
+          if (value.transport !== undefined && value.transport !== "ws") return []
+          const folders = Array.isArray(value.workspaceFolders)
+            ? value.workspaceFolders.filter((item): item is string => typeof item === "string")
+            : []
+          const score = Math.max(0, ...folders.map(contains))
+          if (!score) return []
+          return [
+            {
+              url: `ws://127.0.0.1:${port}`,
+              authToken: typeof value.authToken === "string" ? value.authToken : undefined,
+              source: `lock:${port}`,
+              score,
+              mtime: statSync(file).mtimeMs,
+            },
+          ]
+        } catch {
+          return []
+        }
+      })
+      .sort((left, right) => right.score - left.score || right.mtime - left.mtime)
+      .map(({ url, authToken, source }) => ({ url, authToken, source }))[0]
+  } catch {
+    return undefined
+  }
+}
+
+export const editorIntegration = {
+  connection: discoverEditorConnection,
+  selection: (directory: string) => resolveZedSelection(resolveZedDbPath() ?? "", directory),
+}