feat(core): implement new experience API routes

packages/core/src/routes/experience/classes/experience-interaction.ts

@@ -0,0 +1,164 @@
+import { InteractionEvent, type VerificationType } from '@logto/schemas';
+import { z } from 'zod';
+
+import RequestError from '#src/errors/RequestError/index.js';
+import { type WithLogContext } from '#src/middleware/koa-audit-log.js';
+import type TenantContext from '#src/tenants/TenantContext.js';
+import assertThat from '#src/utils/assert-that.js';
+
+import type { Interaction } from '../types.js';
+
+import {
+  buildVerificationRecord,
+  verificationRecordDataGuard,
+  type VerificationRecord,
+} from './verifications/index.js';
+
+const interactionStorageGuard = z.object({
+  event: z.nativeEnum(InteractionEvent).optional(),
+  accountId: z.string().optional(),
+  profile: z.object({}).optional(),
+  verificationRecords: verificationRecordDataGuard.array().optional(),
+});
+
+/**
+ * Interaction is a short-lived session session that is initiated when a user starts an interaction flow with the Logto platform.
+ * This class is used to manage all the interaction data and status.
+ *
+ * @see {@link https://github.com/logto-io/rfcs | Logto RFCs} for more information about RFC 0004.
+ */
+export default class ExperienceInteraction {
+  /**
+   * Factory method to create a new `ExperienceInteraction` using the current context.
+   */
+  static async create(ctx: WithLogContext, tenant: TenantContext) {
+    const { provider } = tenant;
+    const interactionDetails = await provider.interactionDetails(ctx.req, ctx.res);
+    return new ExperienceInteraction(ctx, tenant, interactionDetails);
+  }
+
+  /** The interaction event for the current interaction. */
+  private interactionEvent?: InteractionEvent;
+  /** The user verification record list for the current interaction. */
+  private readonly verificationRecords: Map<VerificationType, VerificationRecord>;
+  /** The accountId of the user for the current interaction. Only available once the user is identified. */
+  private accountId?: string;
+  /** The user provided profile data in the current interaction that needs to be stored to database. */
+  private readonly profile?: Record<string, unknown>; // TODO: Fix the type
+
+  constructor(
+    private readonly ctx: WithLogContext,
+    private readonly tenant: TenantContext,
+    interactionDetails: Interaction
+  ) {
+    const { libraries, queries } = tenant;
+
+    const result = interactionStorageGuard.safeParse(interactionDetails.result ?? {});
+
+    assertThat(
+      result.success,
+      new RequestError({ code: 'session.interaction_not_found', status: 404 })
+    );
+
+    const { verificationRecords = [], profile, accountId, event } = result.data;
+
+    this.interactionEvent = event;
+    this.accountId = accountId; // TODO: @simeng-li replace with userId
+    this.profile = profile;
+
+    this.verificationRecords = new Map();
+
+    for (const record of verificationRecords) {
+      const instance = buildVerificationRecord(libraries, queries, record);
+      this.verificationRecords.set(instance.type, instance);
+    }
+  }
+
+  /** Set the interaction event for the current interaction */
+  public setInteractionEvent(event: InteractionEvent) {
+    // TODO: conflict event check (e.g. reset password session can't be used for sign in)
+    this.interactionEvent = event;
+  }
+
+  /** Set the verified `accountId` of the current interaction from the verification record */
+  public identifyUser(verificationRecord: VerificationRecord) {
+    // Throws an 404 error if the user is not found by the given verification record
+    assertThat(
+      verificationRecord.verifiedUserId,
+      new RequestError({
+        code: 'user.user_not_exist',
+        status: 404,
+      })
+    );
+
+    // Throws an 409 error if the current session has already identified a different user
+    if (this.accountId) {
+      assertThat(
+        this.accountId === verificationRecord.verifiedUserId,
+        new RequestError({ code: 'session.identity_conflict', status: 409 })
+      );
+      return;
+    }
+
+    this.accountId = verificationRecord.verifiedUserId;
+  }
+
+  /**
+   * Append a new verification record to the current interaction.
+   * If a record with the same type already exists, it will be replaced.
+   */
+  public appendVerificationRecord(record: VerificationRecord) {
+    const { type } = record;
+
+    this.verificationRecords.set(type, record);
+  }
+
+  public getVerificationRecordById(verificationId: string) {
+    return this.verificationRecordsArray.find((record) => record.id === verificationId);
+  }
+
+  /** Save the current interaction result. */
+  public async save() {
+    // `mergeWithLastSubmission` will only merge current request's interaction results.
+    // Manually merge with previous interaction results here.
+    // @see {@link https://github.com/panva/node-oidc-provider/blob/c243bf6b6663c41ff3e75c09b95fb978eba87381/lib/actions/authorization/interactions.js#L106}
+
+    const { provider } = this.tenant;
+    const details = await provider.interactionDetails(this.ctx.req, this.ctx.res);
+
+    await provider.interactionResult(
+      this.ctx.req,
+      this.ctx.res,
+      { ...details.result, ...this.toJson() },
+      { mergeWithLastSubmission: true }
+    );
+  }
+
+  /** Submit the current interaction result to the OIDC provider and clear the interaction data */
+  public async submit() {
+    // TODO: refine the error code
+    assertThat(this.accountId, 'session.verification_session_not_found');
+
+    const { provider } = this.tenant;
+
+    const redirectTo = await provider.interactionResult(this.ctx.req, this.ctx.res, {
+      login: { accountId: this.accountId },
+    });
+
+    this.ctx.body = { redirectTo };
+  }
+
+  private get verificationRecordsArray() {
+    return [...this.verificationRecords.values()];
+  }
+
+  /** Convert the current interaction to JSON, so that it can be stored as the OIDC provider interaction result */
+  private toJson() {
+    return {
+      event: this.interactionEvent,
+      accountId: this.accountId,
+      profile: this.profile,
+      verificationRecords: this.verificationRecordsArray.map((record) => record.toJson()),
+    };
+  }
+}

packages/core/src/routes/experience/classes/verifications/index.ts

@@ -0,0 +1,35 @@
+import { VerificationType } from '@logto/schemas';
+import { z } from 'zod';
+
+import type Libraries from '#src/tenants/Libraries.js';
+import type Queries from '#src/tenants/Queries.js';
+
+import {
+  PasswordVerification,
+  passwordVerificationRecordDataGuard,
+  type PasswordVerificationRecordData,
+} from './password-verification.js';
+import { type VerificationRecord } from './verification-record.js';
+
+export { type VerificationRecord } from './verification-record.js';
+
+type VerificationRecordData = PasswordVerificationRecordData;
+
+export const verificationRecordDataGuard = z.discriminatedUnion('type', [
+  passwordVerificationRecordDataGuard,
+]);
+
+/**
+ * The factory method to build a new VerificationRecord instance based on the provided VerificationRecordData.
+ */
+export const buildVerificationRecord = <T extends VerificationRecordData>(
+  libraries: Libraries,
+  queries: Queries,
+  data: T
+): VerificationRecord<T['type']> => {
+  switch (data.type) {
+    case VerificationType.Password: {
+      return new PasswordVerification(libraries, queries, data);
+    }
+  }
+};

packages/core/src/routes/experience/classes/verifications/password-verification.ts

@@ -0,0 +1,102 @@
+import {
+  VerificationType,
+  interactionIdentifierGuard,
+  type InteractionIdentifier,
+} from '@logto/schemas';
+import { type ToZodObject } from '@logto/schemas/lib/utils/zod.js';
+import { generateStandardId } from '@logto/shared';
+import { z } from 'zod';
+
+import RequestError from '#src/errors/RequestError/index.js';
+import type Libraries from '#src/tenants/Libraries.js';
+import type Queries from '#src/tenants/Queries.js';
+import assertThat from '#src/utils/assert-that.js';
+
+import { findUserByIdentifier } from '../../utils.js';
+
+import { type VerificationRecord } from './verification-record.js';
+
+export type PasswordVerificationRecordData = {
+  id: string;
+  type: VerificationType.Password;
+  identifier: InteractionIdentifier;
+  /** The userId of the user that has been verified. */
+  userId?: string;
+};
+
+export const passwordVerificationRecordDataGuard = z.object({
+  id: z.string(),
+  type: z.literal(VerificationType.Password),
+  identifier: interactionIdentifierGuard,
+  userId: z.string().optional(),
+}) satisfies ToZodObject<PasswordVerificationRecordData>;
+
+export class PasswordVerification implements VerificationRecord<VerificationType.Password> {
+  /** Factory method to create a new PasswordVerification record using the given identifier */
+  static create(libraries: Libraries, queries: Queries, identifier: InteractionIdentifier) {
+    return new PasswordVerification(libraries, queries, {
+      id: generateStandardId(),
+      type: VerificationType.Password,
+      identifier,
+    });
+  }
+
+  readonly type = VerificationType.Password;
+  public readonly identifier: InteractionIdentifier;
+  public readonly id: string;
+  private userId?: string;
+
+  /**
+   * The constructor method is intended to be used internally by the interaction class
+   * to instantiate a `VerificationRecord` object from existing `PasswordVerificationRecordData`.
+   * It directly sets the instance properties based on the provided data.
+   * For creating a new verification record from context, use the static `create` method instead.
+   */
+  constructor(
+    private readonly libraries: Libraries,
+    private readonly queries: Queries,
+    data: PasswordVerificationRecordData
+  ) {
+    const { id, identifier, userId } = data;
+
+    this.id = id;
+    this.identifier = identifier;
+    this.userId = userId;
+  }
+
+  /** Returns true if a userId is set */
+  get isVerified() {
+    return this.userId !== undefined;
+  }
+
+  get verifiedUserId() {
+    return this.userId;
+  }
+
+  /**
+   * Verifies if the password matches the record in database with the current identifier.
+   * `userId` will be set if the password can be verified.
+   *
+   * @throws RequestError with 401 status if user id suspended.
+   * @throws RequestError with 422 status if the user is not found or the password is incorrect.
+   */
+  async verify(password: string) {
+    const user = await findUserByIdentifier(this.queries.users, this.identifier);
+    const { isSuspended, id } = await this.libraries.users.verifyUserPassword(user, password);
+
+    assertThat(!isSuspended, new RequestError({ code: 'user.suspended', status: 401 }));
+
+    this.userId = id;
+  }
+
+  toJson(): PasswordVerificationRecordData {
+    const { id, type, identifier, userId } = this;
+
+    return {
+      id,
+      type,
+      identifier,
+      userId,
+    };
+  }
+}

packages/core/src/routes/experience/classes/verifications/verification-record.ts

@@ -0,0 +1,21 @@
+import type { VerificationType } from '@logto/schemas';
+
+type Data<T> = {
+  id: string;
+  type: T;
+};
+
+/** The abstract class for all verification records. */
+export abstract class VerificationRecord<
+  T extends VerificationType = VerificationType,
+  Json extends Data<T> = Data<T>,
+> {
+  abstract readonly id: string;
+  abstract readonly type: T;
+
+  abstract get isVerified(): boolean;
+  /** @deprecated will be removed in the coming PR */
+  abstract get verifiedUserId(): string | undefined;
+
+  abstract toJson(): Json;
+}

packages/core/src/routes/experience/const.ts

@@ -0,0 +1,7 @@
+const prefix = '/experience';
+
+export const experienceRoutes = Object.freeze({
+  prefix,
+  identification: `${prefix}/identification`,
+  verification: `${prefix}/verification`,
+});