browsercode/packages/function/src/api.ts at main · code2labgit/browsercode · GitHub

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import { Hono } from "hono"

import { DurableObject } from "cloudflare:workers"

import { randomUUID } from "node:crypto"

import { jwtVerify, createRemoteJWKSet } from "jose"

import { createAppAuth } from "@octokit/auth-app"

import { Octokit } from "@octokit/rest"

import { Resource } from "sst"

type Env = {

SYNC_SERVER: DurableObjectNamespace<SyncServer>

Bucket: R2Bucket

WEB_DOMAIN: string

}

export class SyncServer extends DurableObject<Env> {

// oxlint-disable-next-line no-useless-constructor

constructor(ctx: DurableObjectState, env: Env) {

super(ctx, env)

}

async fetch() {

console.log("SyncServer subscribe")

const webSocketPair = new WebSocketPair()

const [client, server] = Object.values(webSocketPair)

this.ctx.acceptWebSocket(server)

const data = await this.ctx.storage.list()

Array.from(data.entries())

.filter(([key, _]) => key.startsWith("session/"))

.map(([key, content]) => server.send(JSON.stringify({ key, content })))

return new Response(null, {

status: 101,

webSocket: client,

})

}

async webSocketMessage(_ws, _message) {}

async webSocketClose(ws, code, _reason, _wasClean) {

ws.close(code, "Durable Object is closing WebSocket")

}

async publish(key: string, content: any) {

const sessionID = await this.getSessionID()

if (

!key.startsWith(`session/info/${sessionID}`) &&

!key.startsWith(`session/message/${sessionID}/`) &&

!key.startsWith(`session/part/${sessionID}/`)

)

return new Response("Error: Invalid key", { status: 400 })

// store message

await this.env.Bucket.put(`share/${key}.json`, JSON.stringify(content), {

httpMetadata: {

contentType: "application/json",

})

await this.ctx.storage.put(key, content)

const clients = this.ctx.getWebSockets()

console.log("SyncServer publish", key, "to", clients.length, "subscribers")

for (const client of clients) {

client.send(JSON.stringify({ key, content }))

}

public async share(sessionID: string) {

let secret = await this.getSecret()

if (secret) return secret

secret = randomUUID()

await this.ctx.storage.put("secret", secret)

await this.ctx.storage.put("sessionID", sessionID)

return secret

}

public async getData() {

const data = (await this.ctx.storage.list()) as Map<string, any>

return Array.from(data.entries())

.filter(([key, _]) => key.startsWith("session/"))

.map(([key, content]) => ({ key, content }))

}

public async assertSecret(secret: string) {

if (secret !== (await this.getSecret())) throw new Error("Invalid secret")

}

private async getSecret() {

return this.ctx.storage.get<string>("secret")

}

private async getSessionID() {

return this.ctx.storage.get<string>("sessionID")

}

async clear() {

const sessionID = await this.getSessionID()

const list = await this.env.Bucket.list({

prefix: `session/message/${sessionID}/`,

limit: 1000,

})

for (const item of list.objects) {

await this.env.Bucket.delete(item.key)

}

await this.env.Bucket.delete(`session/info/${sessionID}`)

await this.ctx.storage.deleteAll()

}

static shortName(id: string) {

return id.substring(id.length - 8)

}

export default new Hono<{ Bindings: Env }>()

.get("/", (c) => c.text("Hello, world!"))

.post("/share_create", async (c) => {

const body = await c.req.json<{ sessionID: string }>()

const sessionID = body.sessionID

const short = SyncServer.shortName(sessionID)

const id = c.env.SYNC_SERVER.idFromName(short)

const stub = c.env.SYNC_SERVER.get(id)

const secret = await stub.share(sessionID)

return c.json({

secret,

url: `https://${c.env.WEB_DOMAIN}/s/${short}`,

})

.post("/share_delete", async (c) => {

const body = await c.req.json<{ sessionID: string; secret: string }>()

const sessionID = body.sessionID

const secret = body.secret

const id = c.env.SYNC_SERVER.idFromName(SyncServer.shortName(sessionID))

const stub = c.env.SYNC_SERVER.get(id)

await stub.assertSecret(secret)

await stub.clear()

return c.json({})

})

.post("/share_delete_admin", async (c) => {

const body = await c.req.json<{ sessionShortName: string; adminSecret: string }>()

const sessionShortName = body.sessionShortName

const adminSecret = body.adminSecret

if (adminSecret !== Resource.ADMIN_SECRET.value) throw new Error("Invalid admin secret")

const id = c.env.SYNC_SERVER.idFromName(sessionShortName)

const stub = c.env.SYNC_SERVER.get(id)

await stub.clear()

return c.json({})

})

.post("/share_sync", async (c) => {

const body = await c.req.json<{

sessionID: string

secret: string

key: string

content: any

}>()

const name = SyncServer.shortName(body.sessionID)

const id = c.env.SYNC_SERVER.idFromName(name)

const stub = c.env.SYNC_SERVER.get(id)

await stub.assertSecret(body.secret)

await stub.publish(body.key, body.content)

return c.json({})

})

.get("/share_poll", async (c) => {

const upgradeHeader = c.req.header("Upgrade")

if (!upgradeHeader || upgradeHeader !== "websocket") {

return c.text("Error: Upgrade header is required", { status: 426 })

}

const id = c.req.query("id")

console.log("share_poll", id)

if (!id) return c.text("Error: Share ID is required", { status: 400 })

const stub = c.env.SYNC_SERVER.get(c.env.SYNC_SERVER.idFromName(id))

return stub.fetch(c.req.raw)

})

.get("/share_data", async (c) => {

const id = c.req.query("id")

console.log("share_data", id)

if (!id) return c.text("Error: Share ID is required", { status: 400 })

const stub = c.env.SYNC_SERVER.get(c.env.SYNC_SERVER.idFromName(id))

const data = await stub.getData()

let info

const messages: Record<string, any> = {}

data.forEach((d) => {

const [root, type] = d.key.split("/")

if (root !== "session") return

if (type === "info") {

info = d.content

return

}

if (type === "message") {

messages[d.content.id] = {

parts: [],

...d.content,

}

if (type === "part") {

messages[d.content.messageID].parts.push(d.content)

}

})

return c.json({ info, messages })

})

.post("/feishu", async (c) => {

const body = (await c.req.json()) as {

challenge?: string

event?: {

message?: {

message_id?: string

root_id?: string

parent_id?: string

chat_id?: string

content?: string

}

console.log(JSON.stringify(body, null, 2))

const challenge = body.challenge

if (challenge) return c.json({ challenge })

const content = body.event?.message?.content

const parsed =

typeof content === "string" && content.trim().startsWith("{")

? (JSON.parse(content) as {

text?: string

})

: undefined

const text = typeof parsed?.text === "string" ? parsed.text : typeof content === "string" ? content : ""

let message = text.trim().replace(/^@_user_\d+\s*/, "")

message = message.replace(/^aiden,?\s*/i, "<@759257817772851260> ")

if (!message) return c.json({ ok: true })

const threadId = body.event?.message?.root_id || body.event?.message?.message_id

if (threadId) message = `${message} [${threadId}]`

const response = await fetch(

`https://discord.com/api/v10/channels/${Resource.DISCORD_SUPPORT_CHANNEL_ID.value}/messages`,

{

method: "POST",

headers: {

"Content-Type": "application/json",

Authorization: `Bot ${Resource.DISCORD_SUPPORT_BOT_TOKEN.value}`,

body: JSON.stringify({

content: `${message}`,

}),

)

if (!response.ok) {

console.error(await response.text())

return c.json({ error: "Discord bot message failed" }, { status: 502 })

}

return c.json({ ok: true })

})

/**

* Used by the GitHub action to get GitHub installation access token given the OIDC token

.post("/exchange_github_app_token", async (c) => {

const EXPECTED_AUDIENCE = "opencode-github-action"

const GITHUB_ISSUER = "https://token.actions.githubusercontent.com"

const JWKS_URL = `${GITHUB_ISSUER}/.well-known/jwks`

// get Authorization header

const token = c.req.header("Authorization")?.replace(/^Bearer /, "")

if (!token) return c.json({ error: "Authorization header is required" }, { status: 401 })

// verify token

const JWKS = createRemoteJWKSet(new URL(JWKS_URL))

let owner, repo

try {

const { payload } = await jwtVerify(token, JWKS, {

issuer: GITHUB_ISSUER,

audience: EXPECTED_AUDIENCE,

})

const sub = payload.sub // e.g. 'repo:my-org/my-repo:ref:refs/heads/main'

const parts = sub.split(":")[1].split("/")

owner = parts[0]

repo = parts[1]

} catch (err) {

console.error("Token verification failed:", err)

return c.json({ error: "Invalid or expired token" }, { status: 403 })

}

// Create app JWT token

const auth = createAppAuth({

appId: Resource.GITHUB_APP_ID.value,

privateKey: Resource.GITHUB_APP_PRIVATE_KEY.value,

})

const appAuth = await auth({ type: "app" })

// Lookup installation

const octokit = new Octokit({ auth: appAuth.token })

const { data: installation } = await octokit.apps.getRepoInstallation({

owner,

repo,

})

// Get installation token

const installationAuth = await auth({

type: "installation",

installationId: installation.id,

})

return c.json({ token: installationAuth.token })

})

/**

* Used by the GitHub action to get GitHub installation access token given user PAT token (used when testing `opencode github run` locally)

.post("/exchange_github_app_token_with_pat", async (c) => {

const body = await c.req.json<{ owner: string; repo: string }>()

const owner = body.owner

const repo = body.repo

try {

// get Authorization header

const authHeader = c.req.header("Authorization")

const token = authHeader?.replace(/^Bearer /, "")

if (!token) throw new Error("Authorization header is required")

// Verify permissions

const userClient = new Octokit({ auth: token })

const { data: repoData } = await userClient.repos.get({ owner, repo })

if (!repoData.permissions.admin && !repoData.permissions.push && !repoData.permissions.maintain)

throw new Error("User does not have write permissions")

// Get installation token

const auth = createAppAuth({

appId: Resource.GITHUB_APP_ID.value,

privateKey: Resource.GITHUB_APP_PRIVATE_KEY.value,

})

const appAuth = await auth({ type: "app" })

// Lookup installation

const appClient = new Octokit({ auth: appAuth.token })

const { data: installation } = await appClient.apps.getRepoInstallation({

owner,

repo,

})

// Get installation token

const installationAuth = await auth({

type: "installation",

installationId: installation.id,

})

return c.json({ token: installationAuth.token })

} catch (e: any) {

let error = e

if (e instanceof Error) {

error = e.message

}

return c.json({ error }, { status: 401 })

}

})

/**

* Used by the opencode CLI to check if the GitHub app is installed

.get("/get_github_app_installation", async (c) => {

const owner = c.req.query("owner")

const repo = c.req.query("repo")

const auth = createAppAuth({

appId: Resource.GITHUB_APP_ID.value,

privateKey: Resource.GITHUB_APP_PRIVATE_KEY.value,

})

const appAuth = await auth({ type: "app" })

// Lookup installation

const octokit = new Octokit({ auth: appAuth.token })

let installation

try {

const ret = await octokit.apps.getRepoInstallation({ owner, repo })

installation = ret.data

} catch (err) {

if (err instanceof Error && err.message.includes("Not Found")) {

// not installed

} else {

throw err

}

return c.json({ installation })

})

.all("*", (c) => c.text("Not Found"))

browsercode/packages/function/src/api.ts at main · code2labgit/browsercode · GitHub

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