Refactor external tools organization and add file search API endpoint

🤖 Generated with [OpenCode](https://opencode.ai)

Co-Authored-By: OpenCode <noreply@opencode.ai>

packages/opencode/src/external/ripgrep.ts

@@ -0,0 +1,114 @@
+import { App } from "../app/app"
+import path from "path"
+import { Global } from "../global"
+import fs from "fs/promises"
+import { z } from "zod"
+import { NamedError } from "../util/error"
+import { lazy } from "../util/lazy"
+
+export namespace Ripgrep {
+  const PLATFORM = {
+    darwin: { platform: "apple-darwin", extension: "tar.gz" },
+    linux: { platform: "unknown-linux-musl", extension: "tar.gz" },
+    win32: { platform: "pc-windows-msvc", extension: "zip" },
+  } as const
+
+  export const ExtractionFailedError = NamedError.create(
+    "RipgrepExtractionFailedError",
+    z.object({
+      filepath: z.string(),
+      stderr: z.string(),
+    }),
+  )
+
+  export const UnsupportedPlatformError = NamedError.create(
+    "RipgrepUnsupportedPlatformError",
+    z.object({
+      platform: z.string(),
+    }),
+  )
+
+  export const DownloadFailedError = NamedError.create(
+    "RipgrepDownloadFailedError",
+    z.object({
+      url: z.string(),
+      status: z.number(),
+    }),
+  )
+
+  const state = lazy(async () => {
+    let filepath = Bun.which("rg")
+    if (filepath) return { filepath }
+    filepath = path.join(
+      Global.Path.bin,
+      "rg" + (process.platform === "win32" ? ".exe" : ""),
+    )
+
+    const file = Bun.file(filepath)
+    if (!(await file.exists())) {
+      const archMap = { x64: "x86_64", arm64: "aarch64" } as const
+      const arch = archMap[process.arch as keyof typeof archMap] ?? process.arch
+
+      const config = PLATFORM[process.platform as keyof typeof PLATFORM]
+      if (!config)
+        throw new UnsupportedPlatformError({ platform: process.platform })
+
+      const version = "14.1.1"
+      const filename = `ripgrep-${version}-${arch}-${config.platform}.${config.extension}`
+      const url = `https://github.com/BurntSushi/ripgrep/releases/download/${version}/${filename}`
+
+      const response = await fetch(url)
+      if (!response.ok)
+        throw new DownloadFailedError({ url, status: response.status })
+
+      const buffer = await response.arrayBuffer()
+      const archivePath = path.join(Global.Path.bin, filename)
+      await Bun.write(archivePath, buffer)
+      if (config.extension === "tar.gz") {
+        const args = ["tar", "-xzf", archivePath, "--strip-components=1"]
+
+        if (process.platform === "darwin") args.push("--include=*/rg")
+        if (process.platform === "linux") args.push("--wildcards", "*/rg")
+
+        const proc = Bun.spawn(args, {
+          cwd: Global.Path.bin,
+          stderr: "pipe",
+          stdout: "pipe",
+        })
+        await proc.exited
+        if (proc.exitCode !== 0)
+          throw new ExtractionFailedError({
+            filepath,
+            stderr: await Bun.readableStreamToText(proc.stderr),
+          })
+      }
+      if (config.extension === "zip") {
+        const proc = Bun.spawn(
+          ["unzip", "-j", archivePath, "*/rg.exe", "-d", Global.Path.bin],
+          {
+            cwd: Global.Path.bin,
+            stderr: "pipe",
+            stdout: "ignore",
+          },
+        )
+        await proc.exited
+        if (proc.exitCode !== 0)
+          throw new ExtractionFailedError({
+            filepath: archivePath,
+            stderr: await Bun.readableStreamToText(proc.stderr),
+          })
+      }
+      await fs.unlink(archivePath)
+      if (process.platform !== "win32") await fs.chmod(filepath, 0o755)
+    }
+
+    return {
+      filepath,
+    }
+  })
+
+  export async function filepath() {
+    const { filepath } = await state()
+    return filepath
+  }
+}