feat(28-01): create Logto Management API client service with M2M auth

Implements LogtoManagementClient with token caching, password verification,
password update, email update, user deletion, and has-password check.
All methods proxy to Logto Management API via M2M credentials.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-04-12 17:45:48 +02:00
parent 37030c397e
commit fcd8279d79
2 changed files with 470 additions and 0 deletions

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// ── Logto Management API Client ─────────────────────────────────────
// Machine-to-Machine (M2M) client for proxying account management
// operations through GearBox's backend, per D-04.
// Users never interact with Logto directly.
interface LogtoManagementConfig {
issuer: string;
m2mAppId: string;
m2mAppSecret: string;
apiResource: string;
}
interface LogtoUser {
id: string;
primaryEmail: string | null;
name: string | null;
avatar: string | null;
createdAt: number;
}
export class LogtoManagementClient {
private config: LogtoManagementConfig | null = null;
private accessToken: string | null = null;
private tokenExpiry = 0;
constructor(config?: LogtoManagementConfig) {
if (config) {
this.config = config;
return;
}
const issuer = process.env.OIDC_ISSUER;
const m2mAppId = process.env.LOGTO_M2M_APP_ID;
const m2mAppSecret = process.env.LOGTO_M2M_APP_SECRET;
const apiResource =
process.env.LOGTO_API_RESOURCE ?? "https://default.logto.app/api";
if (issuer && m2mAppId && m2mAppSecret) {
this.config = { issuer, m2mAppId, m2mAppSecret, apiResource };
}
// config stays null if env vars missing — methods will throw
}
private ensureConfigured(): LogtoManagementConfig {
if (!this.config) {
throw new Error(
"Logto M2M not configured. Set LOGTO_M2M_APP_ID and LOGTO_M2M_APP_SECRET env vars.",
);
}
return this.config;
}
/**
* Derive the Management API base URL from the OIDC issuer.
* Strip /oidc suffix if present, to get the Logto base URL.
*/
private getBaseUrl(): string {
const config = this.ensureConfigured();
const issuer = config.issuer.replace(/\/oidc\/?$/, "");
return issuer;
}
/**
* Get a cached M2M access token, refreshing if expired.
* Per T-28-01: never log the token or secret.
* Per T-28-02: cache with TTL (expiry minus 60s buffer).
*/
async getAccessToken(): Promise<string> {
const config = this.ensureConfigured();
// Return cached token if still valid (with 60s buffer)
if (this.accessToken && Date.now() < this.tokenExpiry - 60_000) {
return this.accessToken;
}
const tokenUrl = `${this.getBaseUrl()}/oidc/token`;
const credentials = Buffer.from(
`${config.m2mAppId}:${config.m2mAppSecret}`,
).toString("base64");
const res = await fetch(tokenUrl, {
method: "POST",
headers: {
"Content-Type": "application/x-www-form-urlencoded",
Authorization: `Basic ${credentials}`,
},
body: new URLSearchParams({
grant_type: "client_credentials",
resource: config.apiResource,
scope: "all",
}).toString(),
});
if (!res.ok) {
throw new Error(`Logto M2M token request failed: HTTP ${res.status}`);
}
const data = (await res.json()) as {
access_token: string;
expires_in: number;
};
this.accessToken = data.access_token;
this.tokenExpiry = Date.now() + data.expires_in * 1000;
return this.accessToken;
}
private async apiRequest(
method: string,
path: string,
body?: unknown,
): Promise<Response> {
const token = await this.getAccessToken();
const url = `${this.getBaseUrl()}${path}`;
const headers: Record<string, string> = {
Authorization: `Bearer ${token}`,
};
if (body !== undefined) {
headers["Content-Type"] = "application/json";
}
return fetch(url, {
method,
headers,
body: body !== undefined ? JSON.stringify(body) : undefined,
});
}
async getUser(logtoSub: string): Promise<LogtoUser> {
const res = await this.apiRequest("GET", `/api/users/${logtoSub}`);
if (!res.ok) {
throw new Error(`Failed to get Logto user: HTTP ${res.status}`);
}
return res.json() as Promise<LogtoUser>;
}
/**
* Verify a user's current password.
* Returns true if password is correct, false otherwise.
*/
async verifyPassword(logtoSub: string, password: string): Promise<boolean> {
const res = await this.apiRequest(
"POST",
`/api/users/${logtoSub}/password/verify`,
{ password },
);
if (res.status === 204 || res.status === 200) return true;
if (res.status === 422 || res.status === 400) return false;
throw new Error(`Logto verifyPassword unexpected: HTTP ${res.status}`);
}
/**
* Set a new password for the user.
*/
async updatePassword(logtoSub: string, password: string): Promise<void> {
const res = await this.apiRequest(
"PATCH",
`/api/users/${logtoSub}/password`,
{ password },
);
if (!res.ok) {
throw new Error(`Failed to update password: HTTP ${res.status}`);
}
}
/**
* Check if user has a password set (social-only accounts may not).
*/
async hasPassword(logtoSub: string): Promise<boolean> {
const res = await this.apiRequest(
"GET",
`/api/users/${logtoSub}/has-password`,
);
if (!res.ok) {
throw new Error(`Failed to check password status: HTTP ${res.status}`);
}
const data = (await res.json()) as { hasPassword: boolean };
return data.hasPassword;
}
/**
* Update the user's primary email on Logto.
*/
async updateEmail(logtoSub: string, email: string): Promise<void> {
const res = await this.apiRequest("PATCH", `/api/users/${logtoSub}`, {
primaryEmail: email,
});
if (!res.ok) {
throw new Error(`Failed to update email: HTTP ${res.status}`);
}
}
/**
* Delete the user from Logto entirely.
*/
async deleteUser(logtoSub: string): Promise<void> {
const res = await this.apiRequest("DELETE", `/api/users/${logtoSub}`);
if (!res.ok) {
throw new Error(`Failed to delete Logto user: HTTP ${res.status}`);
}
}
}
export const logtoClient = new LogtoManagementClient();