desktop: add electron version (#15663)

1 files changed, 129 insertions, 0 deletions

diff --git a/packages/desktop-electron/src/main/server.ts b/packages/desktop-electron/src/main/server.ts
new file mode 100644
index 000000000..92018e72e
--- /dev/null
+++ b/packages/desktop-electron/src/main/server.ts
@@ -0,0 +1,129 @@
+import { dialog } from "electron"
+
+import { getConfig, serve, type CommandChild, type Config } from "./cli"
+import { DEFAULT_SERVER_URL_KEY, WSL_ENABLED_KEY } from "./constants"
+import { store } from "./store"
+
+export type WslConfig = { enabled: boolean }
+
+export type HealthCheck = { wait: Promise<void> }
+
+export function getDefaultServerUrl(): string | null {
+  const value = store.get(DEFAULT_SERVER_URL_KEY)
+  return typeof value === "string" ? value : null
+}
+
+export function setDefaultServerUrl(url: string | null) {
+  if (url) {
+    store.set(DEFAULT_SERVER_URL_KEY, url)
+    return
+  }
+
+  store.delete(DEFAULT_SERVER_URL_KEY)
+}
+
+export function getWslConfig(): WslConfig {
+  const value = store.get(WSL_ENABLED_KEY)
+  return { enabled: typeof value === "boolean" ? value : false }
+}
+
+export function setWslConfig(config: WslConfig) {
+  store.set(WSL_ENABLED_KEY, config.enabled)
+}
+
+export async function getSavedServerUrl(): Promise<string | null> {
+  const direct = getDefaultServerUrl()
+  if (direct) return direct
+
+  const config = await getConfig().catch(() => null)
+  if (!config) return null
+  return getServerUrlFromConfig(config)
+}
+
+export function spawnLocalServer(hostname: string, port: number, password: string) {
+  const { child, exit, events } = serve(hostname, port, password)
+
+  const wait = (async () => {
+    const url = `http://${hostname}:${port}`
+
+    const ready = async () => {
+      while (true) {
+        await new Promise((resolve) => setTimeout(resolve, 100))
+        if (await checkHealth(url, password)) return
+      }
+    }
+
+    const terminated = async () => {
+      const payload = await exit
+      throw new Error(
+        `Sidecar terminated before becoming healthy (code=${payload.code ?? "unknown"} signal=${
+          payload.signal ?? "unknown"
+        })`,
+      )
+    }
+
+    await Promise.race([ready(), terminated()])
+  })()
+
+  return { child, health: { wait }, events }
+}
+
+export async function checkHealth(url: string, password?: string | null): Promise<boolean> {
+  let healthUrl: URL
+  try {
+    healthUrl = new URL("/global/health", url)
+  } catch {
+    return false
+  }
+
+  const headers = new Headers()
+  if (password) {
+    const auth = Buffer.from(`opencode:${password}`).toString("base64")
+    headers.set("authorization", `Basic ${auth}`)
+  }
+
+  try {
+    const res = await fetch(healthUrl, {
+      method: "GET",
+      headers,
+      signal: AbortSignal.timeout(3000),
+    })
+    return res.ok
+  } catch {
+    return false
+  }
+}
+
+export async function checkHealthOrAskRetry(url: string): Promise<boolean> {
+  while (true) {
+    if (await checkHealth(url)) return true
+
+    const result = await dialog.showMessageBox({
+      type: "warning",
+      message: `Could not connect to configured server:\n${url}\n\nWould you like to retry or start a local server instead?`,
+      title: "Connection Failed",
+      buttons: ["Retry", "Start Local"],
+      defaultId: 0,
+      cancelId: 1,
+    })
+
+    if (result.response === 0) continue
+    return false
+  }
+}
+
+export function normalizeHostnameForUrl(hostname: string) {
+  if (hostname === "0.0.0.0") return "127.0.0.1"
+  if (hostname === "::") return "[::1]"
+  if (hostname.includes(":") && !hostname.startsWith("[")) return `[${hostname}]`
+  return hostname
+}
+
+export function getServerUrlFromConfig(config: Config) {
+  const server = config.server
+  if (!server?.port) return null
+  const host = server.hostname ? normalizeHostnameForUrl(server.hostname) : "127.0.0.1"
+  return `http://${host}:${server.port}`
+}
+
+export type { CommandChild }