fix: check command existence before calling notify-send (#264)

src/hooks/session-notification-utils.ts

@@ -0,0 +1,140 @@
+import { spawn } from "bun"
+
+type Platform = "darwin" | "linux" | "win32" | "unsupported"
+
+let notifySendPath: string | null = null
+let notifySendPromise: Promise<string | null> | null = null
+
+let osascriptPath: string | null = null
+let osascriptPromise: Promise<string | null> | null = null
+
+let powershellPath: string | null = null
+let powershellPromise: Promise<string | null> | null = null
+
+let afplayPath: string | null = null
+let afplayPromise: Promise<string | null> | null = null
+
+let paplayPath: string | null = null
+let paplayPromise: Promise<string | null> | null = null
+
+let aplayPath: string | null = null
+let aplayPromise: Promise<string | null> | null = null
+
+async function findCommand(commandName: string): Promise<string | null> {
+  const isWindows = process.platform === "win32"
+  const cmd = isWindows ? "where" : "which"
+
+  try {
+    const proc = spawn([cmd, commandName], {
+      stdout: "pipe",
+      stderr: "pipe",
+    })
+
+    const exitCode = await proc.exited
+    if (exitCode !== 0) {
+      return null
+    }
+
+    const stdout = await new Response(proc.stdout).text()
+    const path = stdout.trim().split("\n")[0]
+
+    if (!path) {
+      return null
+    }
+
+    return path
+  } catch {
+    return null
+  }
+}
+
+export async function getNotifySendPath(): Promise<string | null> {
+  if (notifySendPath !== null) return notifySendPath
+  if (notifySendPromise) return notifySendPromise
+
+  notifySendPromise = (async () => {
+    const path = await findCommand("notify-send")
+    notifySendPath = path
+    return path
+  })()
+
+  return notifySendPromise
+}
+
+export async function getOsascriptPath(): Promise<string | null> {
+  if (osascriptPath !== null) return osascriptPath
+  if (osascriptPromise) return osascriptPromise
+
+  osascriptPromise = (async () => {
+    const path = await findCommand("osascript")
+    osascriptPath = path
+    return path
+  })()
+
+  return osascriptPromise
+}
+
+export async function getPowershellPath(): Promise<string | null> {
+  if (powershellPath !== null) return powershellPath
+  if (powershellPromise) return powershellPromise
+
+  powershellPromise = (async () => {
+    const path = await findCommand("powershell")
+    powershellPath = path
+    return path
+  })()
+
+  return powershellPromise
+}
+
+export async function getAfplayPath(): Promise<string | null> {
+  if (afplayPath !== null) return afplayPath
+  if (afplayPromise) return afplayPromise
+
+  afplayPromise = (async () => {
+    const path = await findCommand("afplay")
+    afplayPath = path
+    return path
+  })()
+
+  return afplayPromise
+}
+
+export async function getPaplayPath(): Promise<string | null> {
+  if (paplayPath !== null) return paplayPath
+  if (paplayPromise) return paplayPromise
+
+  paplayPromise = (async () => {
+    const path = await findCommand("paplay")
+    paplayPath = path
+    return path
+  })()
+
+  return paplayPromise
+}
+
+export async function getAplayPath(): Promise<string | null> {
+  if (aplayPath !== null) return aplayPath
+  if (aplayPromise) return aplayPromise
+
+  aplayPromise = (async () => {
+    const path = await findCommand("aplay")
+    aplayPath = path
+    return path
+  })()
+
+  return aplayPromise
+}
+
+export function startBackgroundCheck(platform: Platform): void {
+  if (platform === "darwin") {
+    getOsascriptPath().catch(() => {})
+    getAfplayPath().catch(() => {})
+  } else if (platform === "linux") {
+    getNotifySendPath().catch(() => {})
+    getPaplayPath().catch(() => {})
+    getAplayPath().catch(() => {})
+  } else if (platform === "win32") {
+    getPowershellPath().catch(() => {})
+  }
+}