Add search function to fzf and move version constant to namespace level

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Co-Authored-By: OpenCode <[email protected]>

packages/opencode/src/external/fzf.ts

@@ -0,0 +1,134 @@
+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"
+import { Log } from "../util/log"
+
+export namespace Fzf {
+  const log = Log.create({ service: "fzf" })
+
+  const VERSION = "0.62.0"
+  const PLATFORM = {
+    darwin: { extension: "tar.gz" },
+    linux: { extension: "tar.gz" },
+    win32: { extension: "zip" },
+  } as const
+
+  export const ExtractionFailedError = NamedError.create(
+    "FzfExtractionFailedError",
+    z.object({
+      filepath: z.string(),
+      stderr: z.string(),
+    }),
+  )
+
+  export const UnsupportedPlatformError = NamedError.create(
+    "FzfUnsupportedPlatformError",
+    z.object({
+      platform: z.string(),
+    }),
+  )
+
+  export const DownloadFailedError = NamedError.create(
+    "FzfDownloadFailedError",
+    z.object({
+      url: z.string(),
+      status: z.number(),
+    }),
+  )
+
+  const state = lazy(async () => {
+    let filepath = Bun.which("fzf")
+    if (filepath) {
+      log.info("found", { filepath })
+      return { filepath }
+    }
+    filepath = path.join(
+      Global.Path.bin,
+      "fzf" + (process.platform === "win32" ? ".exe" : ""),
+    )
+
+    const file = Bun.file(filepath)
+    if (!(await file.exists())) {
+      const archMap = { x64: "amd64", arm64: "arm64" } as const
+      const arch = archMap[process.arch as keyof typeof archMap] ?? "amd64"
+
+      const config = PLATFORM[process.platform as keyof typeof PLATFORM]
+      if (!config)
+        throw new UnsupportedPlatformError({ platform: process.platform })
+
+      const version = VERSION
+      const platformName =
+        process.platform === "win32" ? "windows" : process.platform
+      const filename = `fzf-${version}-${platformName}_${arch}.${config.extension}`
+      const url = `https://github.com/junegunn/fzf/releases/download/v${version}/${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 proc = Bun.spawn(["tar", "-xzf", archivePath, "fzf"], {
+          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, "fzf.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
+  }
+
+  export async function search(cwd: string, query: string) {
+    const process = Bun.spawn({
+      cwd,
+      stdin: "inherit",
+      stdout: "pipe",
+      stderr: "pipe",
+      cmd: [await filepath(), "--filter", query],
+    })
+    await process.exited
+    const stdout = await Bun.readableStreamToText(process.stdout)
+    return stdout
+      .trim()
+      .split("\n")
+      .filter((line) => line.length > 0)
+  }
+}