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import type { Event } from "@opencode-ai/sdk/v2/client"
import { createSimpleContext } from "@opencode-ai/ui/context"
import { createGlobalEmitter } from "@solid-primitives/event-bus"
import { batch, onCleanup } from "solid-js"
import z from "zod"
import { createSdkForServer } from "@/utils/server"
import { usePlatform } from "./platform"
import { useServer } from "./server"
const abortError = z.object({
name: z.literal("AbortError"),
})
export const { use: useGlobalSDK, provider: GlobalSDKProvider } = createSimpleContext({
name: "GlobalSDK",
init: () => {
const server = useServer()
const platform = usePlatform()
const abort = new AbortController()
const eventFetch = (() => {
if (!platform.fetch || !server.current) return
try {
const url = new URL(server.current.http.url)
const loopback = url.hostname === "localhost" || url.hostname === "127.0.0.1" || url.hostname === "::1"
if (url.protocol === "http:" && !loopback) return platform.fetch
} catch {
return
}
})()
const currentServer = server.current
if (!currentServer) throw new Error("No server available")
const eventSdk = createSdkForServer({
signal: abort.signal,
fetch: eventFetch,
server: currentServer.http,
})
const emitter = createGlobalEmitter<{
[key: string]: Event
}>()
type Queued = { directory: string; payload: Event }
const FLUSH_FRAME_MS = 16
const STREAM_YIELD_MS = 8
const RECONNECT_DELAY_MS = 250
let queue: Queued[] = []
let buffer: Queued[] = []
const coalesced = new Map<string, number>()
let timer: ReturnType<typeof setTimeout> | undefined
let last = 0
const key = (directory: string, payload: Event) => {
if (payload.type === "session.status") return `session.status:${directory}:${payload.properties.sessionID}`
if (payload.type === "lsp.updated") return `lsp.updated:${directory}`
if (payload.type === "message.part.updated") {
const part = payload.properties.part
return `message.part.updated:${directory}:${part.messageID}:${part.id}`
}
}
const flush = () => {
if (timer) clearTimeout(timer)
timer = undefined
if (queue.length === 0) return
const events = queue
queue = buffer
buffer = events
queue.length = 0
coalesced.clear()
last = Date.now()
batch(() => {
for (const event of events) {
emitter.emit(event.directory, event.payload)
}
})
buffer.length = 0
}
const schedule = () => {
if (timer) return
const elapsed = Date.now() - last
timer = setTimeout(flush, Math.max(0, FLUSH_FRAME_MS - elapsed))
}
let streamErrorLogged = false
const wait = (ms: number) => new Promise<void>((resolve) => setTimeout(resolve, ms))
const aborted = (error: unknown) => abortError.safeParse(error).success
let attempt: AbortController | undefined
const HEARTBEAT_TIMEOUT_MS = 15_000
let lastEventAt = Date.now()
let heartbeat: ReturnType<typeof setTimeout> | undefined
const resetHeartbeat = () => {
lastEventAt = Date.now()
if (heartbeat) clearTimeout(heartbeat)
heartbeat = setTimeout(() => {
attempt?.abort()
}, HEARTBEAT_TIMEOUT_MS)
}
const clearHeartbeat = () => {
if (!heartbeat) return
clearTimeout(heartbeat)
heartbeat = undefined
}
void (async () => {
while (!abort.signal.aborted) {
attempt = new AbortController()
lastEventAt = Date.now()
const onAbort = () => {
attempt?.abort()
}
abort.signal.addEventListener("abort", onAbort)
try {
const events = await eventSdk.global.event({
signal: attempt.signal,
onSseError: (error) => {
if (aborted(error)) return
if (streamErrorLogged) return
streamErrorLogged = true
console.error("[global-sdk] event stream error", {
url: currentServer.http.url,
fetch: eventFetch ? "platform" : "webview",
error,
})
},
})
let yielded = Date.now()
resetHeartbeat()
for await (const event of events.stream) {
resetHeartbeat()
streamErrorLogged = false
const directory = event.directory ?? "global"
const payload = event.payload
const k = key(directory, payload)
if (k) {
const i = coalesced.get(k)
if (i !== undefined) {
queue[i] = { directory, payload }
continue
}
coalesced.set(k, queue.length)
}
queue.push({ directory, payload })
schedule()
if (Date.now() - yielded < STREAM_YIELD_MS) continue
yielded = Date.now()
await wait(0)
}
} catch (error) {
if (!aborted(error) && !streamErrorLogged) {
streamErrorLogged = true
console.error("[global-sdk] event stream failed", {
url: currentServer.http.url,
fetch: eventFetch ? "platform" : "webview",
error,
})
}
} finally {
abort.signal.removeEventListener("abort", onAbort)
attempt = undefined
clearHeartbeat()
}
if (abort.signal.aborted) return
await wait(RECONNECT_DELAY_MS)
}
})().finally(flush)
const onVisibility = () => {
if (typeof document === "undefined") return
if (document.visibilityState !== "visible") return
if (Date.now() - lastEventAt < HEARTBEAT_TIMEOUT_MS) return
attempt?.abort()
}
if (typeof document !== "undefined") {
document.addEventListener("visibilitychange", onVisibility)
}
onCleanup(() => {
if (typeof document !== "undefined") {
document.removeEventListener("visibilitychange", onVisibility)
}
abort.abort()
flush()
})
const sdk = createSdkForServer({
server: server.current.http,
fetch: platform.fetch,
throwOnError: true,
})
return {
url: currentServer.http.url,
client: sdk,
event: emitter,
createClient(opts: Omit<Parameters<typeof createSdkForServer>[0], "server" | "fetch">) {
const s = server.current
if (!s) throw new Error("Server not available")
return createSdkForServer({
server: s.http,
fetch: platform.fetch,
...opts,
})
},
}
},
})
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