feat: ( fayda ) use platform-specific Fayda redirect_uri

apps/edr-passenger-api/src/config/fayda.config.ts

@@ -23,7 +23,10 @@ export interface FaydaConfig {
   authorizationEndpoint: string;
   tokenEndpoint: string;
   userInfoEndpoint: string;
+  /** OAuth redirect_uri sent to eSignet for MOBILE clients. */
   redirectUri: string;
+  /** OAuth redirect_uri sent to eSignet for WEB clients. Falls back to `redirectUri`. */
+  webRedirectUri: string;
   privateJwk: FaydaJwk;
   scope: string;
   acrValues: string;
@@ -73,6 +76,7 @@ export default registerAs('fayda', (): FaydaConfig => {
   const claimsLocales = process.env.FAYDA_CLAIMS_LOCALES ?? 'en am';
   const sessionTtl = Number.parseInt(process.env.FAYDA_SESSION_TTL_MINUTES ?? '10', 10);
   const redirectUri = process.env.FAYDA_REDIRECT_URI ?? '';
+  const webRedirectUri = process.env.FAYDA_WEB_REDIRECT_URI || redirectUri;
   if (!enabled) {
     return {
       enabled: false,
@@ -81,6 +85,7 @@ export default registerAs('fayda', (): FaydaConfig => {
       tokenEndpoint: process.env.FAYDA_TOKEN_ENDPOINT ?? '',
       userInfoEndpoint: process.env.FAYDA_USERINFO_ENDPOINT ?? '',
       redirectUri,
+      webRedirectUri,
       privateJwk: { kty: 'RSA', n: '', e: '', d: '' },
       scope,
       acrValues,
@@ -111,6 +116,7 @@ export default registerAs('fayda', (): FaydaConfig => {
     tokenEndpoint: process.env.FAYDA_TOKEN_ENDPOINT!,
     userInfoEndpoint: process.env.FAYDA_USERINFO_ENDPOINT!,
     redirectUri,
+    webRedirectUri,
     privateJwk: decodePrivateJwk(process.env.FAYDA_PRIVATE_KEY_BASE64!),
     scope,
     acrValues,

apps/edr-passenger-api/src/modules/verifayda/verifayda.dto.ts

@@ -16,7 +16,7 @@ export class StartVerificationDto {
     enum: ['WEB', 'MOBILE'],
     default: 'WEB',
     description:
-      'Client platform. Decides where /callback redirects on completion: a web https URL (WEB) or a custom-scheme deep link the Flutter app intercepts (MOBILE).',
+      'Client platform. Selects which OAuth redirect_uri is sent to eSignet: WEB uses FAYDA_WEB_REDIRECT_URI, MOBILE uses FAYDA_REDIRECT_URI. Both land on the same /complete endpoint with identical handling.',
   })
   @IsOptional()
   @IsIn(['WEB', 'MOBILE'])

apps/edr-passenger-api/src/modules/verifayda/verifayda.service.spec.ts

@@ -35,6 +35,7 @@ function buildConfig(overrides?: Partial<FaydaConfig>): FaydaConfig {
     tokenEndpoint: 'https://esignet.test/token',
     userInfoEndpoint: 'https://esignet.test/userinfo',
     redirectUri: 'http://localhost:4000/fayda/verification/complete',
+    webRedirectUri: 'http://localhost:5174/fayda/verification/complete',
     privateJwk: { kty: 'RSA', n: '', e: '', d: '' },
     scope: 'openid profile email',
     acrValues: 'mosip:idp:acr:generated-code',
@@ -101,13 +102,14 @@ describe('VerifaydaService (OIDC, client-callback)', () => {
       expect(parsed.origin + parsed.pathname).toBe('https://esignet.test/authorize');
       expect(parsed.searchParams.get('client_id')).toBe('edr-test-client');
       expect(parsed.searchParams.get('code_challenge_method')).toBe('S256');
+      // Default platform is WEB → webRedirectUri.
       expect(parsed.searchParams.get('redirect_uri')).toBe(
-        'http://localhost:4000/fayda/verification/complete',
+        'http://localhost:5174/fayda/verification/complete',
       );
       expect(parsed.searchParams.get('state')).toBe(created.state);
     });
 
-    it('uses the same single redirect_uri regardless of platform (platform is only recorded)', async () => {
+    it('sends the MOBILE redirect_uri (base redirectUri) for MOBILE sessions', async () => {
       prisma.faydaVerificationSession.create.mockResolvedValue({});
 
       const url = await service.startVerification({
@@ -122,6 +124,19 @@ describe('VerifaydaService (OIDC, client-callback)', () => {
       );
     });
 
+    it('sends the WEB redirect_uri (webRedirectUri) for WEB sessions', async () => {
+      prisma.faydaVerificationSession.create.mockResolvedValue({});
+
+      const url = await service.startVerification({
+        purpose: 'VERIFY',
+        platform: 'WEB',
+      });
+
+      expect(new URL(url).searchParams.get('redirect_uri')).toBe(
+        'http://localhost:5174/fayda/verification/complete',
+      );
+    });
+
     it('throws ServiceUnavailable when fayda integration is disabled', async () => {
       const disabledService = new VerifaydaService(
         buildConfigService(buildConfig({ enabled: false })),

apps/edr-passenger-api/src/modules/verifayda/verifayda.service.ts

@@ -161,7 +161,18 @@ export class VerifaydaService {
       `Fayda verification started: purpose=${input.purpose} platform=${input.platform ?? 'WEB'} userId=${input.userId ?? 'none'}`,
     );
 
-    return this.buildAuthorizationUrl({ state, codeChallenge });
+    return this.buildAuthorizationUrl({
+      state,
+      codeChallenge,
+      redirectUri: this.redirectUriForPlatform(input.platform ?? 'WEB'),
+    });
+  }
+
+  /** WEB clients use `webRedirectUri`; MOBILE uses the base `redirectUri`. */
+  private redirectUriForPlatform(platform?: FaydaPlatform): string {
+    return platform === 'MOBILE'
+      ? this.faydaConfig.redirectUri
+      : this.faydaConfig.webRedirectUri;
   }
 
 
@@ -213,6 +224,7 @@ export class VerifaydaService {
       const tokens = await this.exchangeCodeForTokens(
         query.code,
         session.codeVerifier,
+        this.redirectUriForPlatform(session.platform as FaydaPlatform),
       );
       const userInfo = await this.fetchUserInfo(tokens.access_token);
       const normalized = this.normalizeUserInfo(userInfo);
@@ -307,11 +319,12 @@ export class VerifaydaService {
   private buildAuthorizationUrl(args: {
     state: string;
     codeChallenge: string;
+    redirectUri: string;
   }): string {
     const params = new URLSearchParams({
       client_id: this.faydaConfig.clientId,
       response_type: 'code',
-      redirect_uri: this.faydaConfig.redirectUri,
+      redirect_uri: args.redirectUri,
       scope: this.faydaConfig.scope,
       state: args.state,
       code_challenge: args.codeChallenge,
@@ -344,6 +357,7 @@ export class VerifaydaService {
   private async exchangeCodeForTokens(
     code: string,
     codeVerifier: string,
+    redirectUri: string,
   ): Promise<FaydaTokenResponse> {
     const clientAssertion = await generateClientAssertion({
       clientId: this.faydaConfig.clientId,
@@ -354,7 +368,7 @@ export class VerifaydaService {
     const body = new URLSearchParams({
       grant_type: 'authorization_code',
       code,
-      redirect_uri: this.faydaConfig.redirectUri,
+      redirect_uri: redirectUri,
       client_id: this.faydaConfig.clientId,
       client_assertion_type:
         'urn:ietf:params:oauth:client-assertion-type:jwt-bearer',