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api.ts
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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
}
async function getFeishuTenantToken(): Promise<string> {
const response = await fetch("https://open.feishu.cn/open-apis/auth/v3/tenant_access_token/internal", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
app_id: Resource.FEISHU_APP_ID.value,
app_secret: Resource.FEISHU_APP_SECRET.value,
}),
})
const data = (await response.json()) as { tenant_access_token?: string }
if (!data.tenant_access_token) throw new Error("Failed to get Feishu tenant token")
return data.tenant_access_token
}
export class SyncServer extends DurableObject<Env> {
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, ...splits] = 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"))