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1import { useAuth, useClerk } from "@clerk/react";
2import { useAtomValue } from "@effect/atom-react";
3import { managedRelaySessionAtom } from "@t3tools/client-runtime/relay";
4import {
5 type ConnectMcpApprovalCall,
6 ConnectMcpApprovalUnavailableError,
7} from "@t3tools/client-runtime/state/connectMcpApproval";
8import { type AuthMcpApprovalDetails, EnvironmentId } from "@t3tools/contracts";
9import * as Result from "effect/Result";
10import * as Schema from "effect/Schema";
11import { type ReactNode, useEffect, useEffectEvent, useRef, useState } from "react";
12
13import { isElectron } from "../../env";
14import { runConnectMcpApproval } from "../../state/connectMcpApproval";
15import { resolveClerkSignInProps } from "../clerk/authRedirect";
16import { retryClerkLoad, useClerkLoadFailed } from "../clerk/clerkLoadFailure";
17import { Button } from "../ui/button";
18import { Spinner } from "../ui/spinner";
19import { StandalonePage, StandalonePageHeader } from "../ui/standalone-page";
20import {
21 type McpApprovalAnswer,
22 type McpApprovalTransport,
23 McpConsent,
24 readAuthorizationRequest,
25} from "./ConnectAgentSurface";
26
27const isUnavailable = Schema.is(ConnectMcpApprovalUnavailableError);
28
29function readEnvironmentId(): EnvironmentId | null {
30 const value = new URL(window.location.href).searchParams.get("environment");
31 return value ? EnvironmentId.make(value) : null;
32}
33
34/** Sends each call with the owner's T3 Connect session and remembers where the environment is. */
35function connectTransport(
36 environmentId: EnvironmentId,
37 onEnvironment: (environment: { readonly url: string; readonly label: string }) => void,
38): McpApprovalTransport {
39 const send = async (
40 call: ConnectMcpApprovalCall,
41 ): Promise<McpApprovalAnswer<AuthMcpApprovalDetails>> => {
42 const result = await runConnectMcpApproval(environmentId, call);
43 if (Result.isFailure(result)) {
44 return {
45 kind: "error",
46 message: isUnavailable(result.failure)
47 ? result.failure.message
48 : "Could not reach this environment. Try again.",
49 };
50 }
51 onEnvironment({
52 url: result.success.environmentUrl,
53 label: result.success.environmentLabel,
54 });
55 const { answer } = result.success;
56 switch (answer.kind) {
57 case "details":
58 return { kind: "ok", value: answer.details };
59 case "redirect":
60 return { kind: "redirect", url: answer.url };
61 case "refused":
62 return { kind: "error", message: answer.message };
63 }
64 };
65 return {
66 load: (authorization) => send({ kind: "approval", payload: authorization }),
67 decide: (authorization, decision) =>
68 send({ kind: "decision", payload: { authorization, decision } }),
69 };
70}
71
72/**
73 * The consent screen for an agent sign-in on a T3 Connect environment: the owner signs in to
74 * T3 Connect here and approves with that session, so no sign-in code is needed.
75 */
76export function ApproveAgentSurface() {
77 const [environmentId] = useState(readEnvironmentId);
78 const [authorization] = useState(readAuthorizationRequest);
79 // Another site could frame this page and steer a click onto Approve.
80 const [framed] = useState(() => window.top !== window.self);
81 const [environment, setEnvironment] = useState<{
82 readonly url: string;
83 readonly label: string;
84 } | null>(null);
85 const [transport] = useState(() =>
86 environmentId === null ? null : connectTransport(environmentId, setEnvironment),
87 );
88 const clerk = useClerk();
89 const { isLoaded, isSignedIn } = useAuth();
90 const loadFailed = useClerkLoadFailed();
91 const session = useAtomValue(managedRelaySessionAtom);
92 const signInOpened = useRef(false);
93
94 const openSignIn = () =>
95 clerk.openSignIn(resolveClerkSignInProps(window.location.href, isElectron));
96 const openSignInOnLoad = useEffectEvent(openSignIn);
97
98 // oxlint-disable-next-line t3code/no-unreasoned-state-sync -- opens Clerk sign-in once Clerk has loaded and nobody is signed in
99 useEffect(() => {
100 if (!isLoaded || isSignedIn || signInOpened.current || framed) return;
101 signInOpened.current = true;
102 openSignInOnLoad();
103 }, [framed, isLoaded, isSignedIn]);
104
105 if (environmentId === null || transport === null) {
106 return (
107 <Message
108 title="This sign-in link is incomplete"
109 description="Close this page and start the sign-in again from your agent."
110 />
111 );
112 }
113
114 if (framed) {
115 return (
116 <Message
117 title="Open this page in its own window"
118 description="For your safety, agent sign-ins cannot be approved inside another site."
119 />
120 );
121 }
122
123 if (loadFailed) {
124 return (
125 <Message
126 title="Could not load sign-in"
127 description="T3 Connect sign-in did not load. Check your connection, then try again."
128 >
129 <div className="mt-6">
130 <Button type="button" onClick={retryClerkLoad}>
131 Retry sign-in
132 </Button>
133 </div>
134 </Message>
135 );
136 }
137
138 if (!isLoaded || (isSignedIn && session === null)) {
139 return (
140 <StandalonePage>
141 <StandalonePageHeader
142 context="Agent sign-in"
143 title="Connecting to T3 Connect"
144 description="One moment while your account loads."
145 />
146 <Spinner className="mt-6" size="lg" tone="muted" />
147 </StandalonePage>
148 );
149 }
150
151 if (!isSignedIn) {
152 return (
153 <Message
154 title="Sign in to approve"
155 description="Sign in to T3 Connect with the account this environment is linked to."
156 >
157 <div className="mt-6">
158 <Button type="button" onClick={openSignIn}>
159 Sign in
160 </Button>
161 </div>
162 </Message>
163 );
164 }
165
166 const search = new URLSearchParams(window.location.search);
167 search.delete("environment");
168 return (
169 <McpConsent
170 authorization={authorization}
171 transport={transport}
172 requireLevelChoice
173 environmentLabel={environment?.label}
174 footer={
175 <div className="mt-6 flex flex-wrap gap-2">
176 {environment ? (
177 <Button
178 size="sm"
179 variant="link"
180 render={
181 <a href={`${new URL("/connect-agent", environment.url).toString()}?${search}`} />
182 }
183 >
184 Use a sign-in code instead
185 </Button>
186 ) : null}
187 <Button
188 size="sm"
189 variant="link"
190 onClick={() => void clerk.signOut({ redirectUrl: window.location.href })}
191 type="button"
192 >
193 Use another account
194 </Button>
195 </div>
196 }
197 />
198 );
199}
200
201function Message({
202 title,
203 description,
204 children,
205}: {
206 readonly title: string;
207 readonly description: string;
208 readonly children?: ReactNode;
209}) {
210 return (
211 <StandalonePage>
212 <StandalonePageHeader context="Agent sign-in" title={title} description={description} />
213 {children}
214 </StandalonePage>
215 );
216}