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import { assert, JDBus } from "jacdac-ts"
import {
BuildReqArgs,
BuildStatus,
ConnectReqArgs,
OutputFrom,
SideBcastReq,
SideBuildReq,
SideBuildResp,
SideConnectReq,
SideErrorResp,
SideEvent,
SideKillReq,
SideKillResp,
SideOutputEvent,
SideReq,
SideResp,
SideSpecsReq,
SideSpecsResp,
SideWatchEvent,
SideWatchReq,
SideWatchResp,
} from "./sideprotocol"
import { runtimeVersion } from "@devicescript/compiler"
import { packageVersion } from "./version"
import { buildConfigFromDir } from "./build"
import { JSON5TryParse } from "@devicescript/interop"
export interface DevToolsIface {
bus: JDBus
clients: DevToolsClient[]
lastOKBuild: BuildStatus
mainClient: DevToolsClient
build: (args: BuildReqArgs) => Promise<BuildStatus>
watch: (
args: BuildReqArgs,
watchCb?: (st: BuildStatus) => void
) => Promise<void>
connect: (req: ConnectReqArgs) => Promise<void>
}
export interface DevToolsClient {
__devsSender: string
__devsWantsSideChannel: boolean
send(data: Buffer | string): void
}
const msgHandlers: Record<
string,
(msg: SideReq<string>, sender: DevToolsClient) => Promise<any>
> = {}
export function addReqHandler<
Req extends SideReq,
Resp extends SideResp<Req["req"]> = SideResp<Req["req"]>
>(
req: Req["req"],
cb: (msg: Req, sender: DevToolsClient) => Promise<Resp["data"]>
) {
msgHandlers[req] = cb as any
}
export let devtoolsIface: DevToolsIface
export function initSideProto(devtools_: DevToolsIface) {
assert(devtoolsIface === undefined)
devtoolsIface = devtools_
addReqHandler<SideBcastReq>("bcast", async (msg, client) => {
client.__devsWantsSideChannel = msg.data.enabled
})
addReqHandler<SideBuildReq, SideBuildResp>("build", async msg => {
return await devtoolsIface.build(msg.data)
})
addReqHandler<SideWatchReq, SideWatchResp>("watch", async (msg, client) => {
return await devtoolsIface.watch(msg.data, st =>
sendEvent<SideWatchEvent>(client, "watch", st)
)
})
addReqHandler<SideConnectReq>("connect", msg => {
return devtoolsIface.connect(msg.data)
})
addReqHandler<SideSpecsReq, SideSpecsResp>("specs", async msg => {
const { buildConfig } = buildConfigFromDir(msg.data.dir)
return {
buildConfig,
versions: {
devsVersion: packageVersion(),
runtimeVersion: runtimeVersion(),
nodeVersion: process.version,
},
}
})
addReqHandler<SideKillReq, SideKillResp>("kill", async () => {
// allow send answer
setTimeout(() => process.exit(0), 500)
})
}
export function sendError(req: SideReq, cl: DevToolsClient, err: any) {
const info: SideErrorResp = {
resp: "error",
seq: req.seq,
data: {
message: err.message || "" + err,
stack: err.stack,
},
}
cl.send(JSON.stringify(info))
}
export function sendEvent<T extends SideEvent>(
cl: DevToolsClient,
ev: T["ev"],
data: T["data"]
) {
cl?.send(
JSON.stringify({
ev,
data,
})
)
}
export function sendOutput(
cl: DevToolsClient,
from: OutputFrom,
lines: string[]
) {
return sendEvent<SideOutputEvent>(cl, "output", {
from,
lines,
})
}
export async function processSideMessage(
devtools_: DevToolsIface,
message: string,
client: DevToolsClient
) {
const msg: SideReq = JSON5TryParse(message)
if (!msg) return
assert(devtoolsIface === devtools_)
const handler = msgHandlers[msg.req]
if (handler) {
try {
devtoolsIface.mainClient = client
const data = await handler(msg, client)
const resp: SideResp = {
resp: msg.req,
seq: msg.seq,
data: data ?? {},
}
client.send(JSON.stringify(resp))
} catch (err) {
sendError(msg, client, err)
}
}
if (!msg.seq)
for (const client of devtoolsIface.clients) {
if (client != client && client.__devsWantsSideChannel)
client.send(message)
}
if (msg.seq && !handler)
sendError(msg, client, new Error(`unknown msg type: ${msg.req}`))
}