import { LayerNode } from "@opencode-ai/core/effect/layer-node"

import { Context, Effect, Layer } from "effect"

import open from "open"

export interface Interface {

readonly open: (url: string) => Effect.Effect<void, Error>

}

export class Service extends Context.Service<Service, Interface>()("@opencode/McpBrowser") {}

const layer = Layer.succeed(

Service,

Service.of({

open: Effect.fn("McpBrowser.open")(function* (url: string) {

const subprocess = yield* Effect.tryPromise({

try: () => open(url),

catch: (error) => (error instanceof Error ? error : new Error(String(error))),

})

yield* Effect.callback<void, Error>((resume) => {

const timer = setTimeout(() => resume(Effect.void), 500)

subprocess.on("error", (error) => {

clearTimeout(timer)

resume(Effect.fail(error))

})

subprocess.on("exit", (code) => {

if (code === null || code === 0) return

clearTimeout(timer)

resume(Effect.fail(new Error(`Browser open failed with exit code ${code}`)))

})

})

}),

}),

)

export const node = LayerNode.make({ service: Service, layer, deps: [] })

export * as McpBrowser from "./browser"