wip: gateway

cloud/function/src/auth.ts

@@ -0,0 +1,68 @@
+import { Resource } from "sst"
+import { z } from "zod"
+import { issuer } from "@openauthjs/openauth"
+import { createSubjects } from "@openauthjs/openauth/subject"
+import { GithubProvider } from "@openauthjs/openauth/provider/github"
+import { CloudflareStorage } from "@openauthjs/openauth/storage/cloudflare"
+import { Account } from "@opencode/cloud-core/account.js"
+
+type Env = {
+  AuthStorage: KVNamespace
+}
+
+export const subjects = createSubjects({
+  account: z.object({
+    accountID: z.string(),
+    email: z.string(),
+  }),
+  user: z.object({
+    userID: z.string(),
+    workspaceID: z.string(),
+  }),
+})
+
+export default {
+  async fetch(request: Request, env: Env, ctx: ExecutionContext) {
+    return issuer({
+      providers: {
+        github: GithubProvider({
+          clientID: Resource.GITHUB_CLIENT_ID_CONSOLE.value,
+          clientSecret: Resource.GITHUB_CLIENT_SECRET_CONSOLE.value,
+          scopes: ["read:user", "user:email"],
+        }),
+      },
+      storage: CloudflareStorage({
+        namespace: env.AuthStorage,
+      }),
+      subjects,
+      async success(ctx, response) {
+        console.log(response)
+
+        let email: string | undefined
+
+        if (response.provider === "github") {
+          const userResponse = await fetch("https://api.github.com/user", {
+            headers: {
+              Authorization: `Bearer ${response.tokenset.access}`,
+              "User-Agent": "opencode",
+              Accept: "application/vnd.github+json",
+            },
+          })
+          const user = (await userResponse.json()) as { email: string }
+          email = user.email
+        } else throw new Error("Unsupported provider")
+
+        if (!email) throw new Error("No email found")
+
+        let accountID = await Account.fromEmail(email).then((x) => x?.id)
+        if (!accountID) {
+          console.log("creating account for", email)
+          accountID = await Account.create({
+            email: email!,
+          })
+        }
+        return ctx.subject("account", accountID, { accountID, email })
+      },
+    }).fetch(request, env, ctx)
+  },
+}