feat: Add OpenAPI documentation on controller OAuth2ProviderController web routes

app/Swagger/OAuth2ProviderControllerSchemas.php

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+<?php
+
+namespace App\Swagger\schemas;
+
+use OpenApi\Attributes as OA;
+
+#[OA\Schema(
+    schema: 'OAuth2TokenResponse',
+    title: 'OAuth2 Token Response',
+    description: 'Successful token response per RFC 6749 §5.1',
+    type: 'object',
+    properties: [
+        new OA\Property(property: 'access_token', type: 'string', description: 'The access token issued by the authorization server'),
+        new OA\Property(property: 'token_type', type: 'string', description: 'The type of the token (typically Bearer)', example: 'Bearer'),
+        new OA\Property(property: 'expires_in', type: 'integer', description: 'Lifetime of the access token in seconds', example: 3600),
+        new OA\Property(property: 'refresh_token', type: 'string', description: 'Refresh token (only if access_type=offline)', nullable: true),
+        new OA\Property(property: 'scope', type: 'string', description: 'Space-delimited list of granted scopes'),
+        new OA\Property(property: 'id_token', type: 'string', description: 'ID token JWT (only for OpenID Connect flows with openid scope)', nullable: true),
+    ]
+)]
+class OAuth2TokenResponseSchema
+{
+}
+
+#[OA\Schema(
+    schema: 'OAuth2ErrorResponse',
+    title: 'OAuth2 Error Response',
+    description: 'Error response per RFC 6749 §5.2',
+    type: 'object',
+    required: ['error'],
+    properties: [
+        new OA\Property(property: 'error', type: 'string', description: 'Error code', example: 'invalid_request'),
+        new OA\Property(property: 'error_description', type: 'string', description: 'Human-readable error description'),
+    ]
+)]
+class OAuth2ErrorResponseSchema
+{
+}
+
+#[OA\Schema(
+    schema: 'OAuth2IntrospectionResponse',
+    title: 'OAuth2 Token Introspection Response',
+    description: 'Token introspection response per RFC 7662',
+    type: 'object',
+    properties: [
+        new OA\Property(property: 'active', type: 'boolean', description: 'Whether the token is active'),
+        new OA\Property(property: 'access_token', type: 'string', description: 'The access token value'),
+        new OA\Property(property: 'client_id', type: 'string', description: 'Client identifier'),
+        new OA\Property(property: 'application_type', type: 'string', description: 'Client application type', enum: ['WEB', 'NATIVE', 'JS']),
+        new OA\Property(property: 'token_type', type: 'string', description: 'Token type', example: 'Bearer'),
+        new OA\Property(property: 'scope', type: 'string', description: 'Space-delimited scopes'),
+        new OA\Property(property: 'audience', type: 'string', description: 'Token audience'),
+        new OA\Property(property: 'expires_in', type: 'integer', description: 'Remaining lifetime in seconds'),
+        new OA\Property(property: 'user_id', type: 'integer', description: 'Resource owner user ID', nullable: true),
+        new OA\Property(property: 'user_identifier', type: 'string', description: 'Resource owner identifier', nullable: true),
+        new OA\Property(property: 'user_email', type: 'string', description: 'Resource owner email', nullable: true),
+        new OA\Property(property: 'user_first_name', type: 'string', description: 'Resource owner first name', nullable: true),
+        new OA\Property(property: 'user_last_name', type: 'string', description: 'Resource owner last name', nullable: true),
+        new OA\Property(property: 'user_pic', type: 'string', format: 'uri', description: 'Resource owner profile picture URL', nullable: true),
+        new OA\Property(
+            property: 'user_groups',
+            type: 'array',
+            description: 'Resource owner group memberships',
+            items: new OA\Items(
+                type: 'object',
+                properties: [
+                    new OA\Property(property: 'id', type: 'integer'),
+                    new OA\Property(property: 'title', type: 'string'),
+                    new OA\Property(property: 'description', type: 'string'),
+                ]
+            ),
+            nullable: true
+        ),
+        new OA\Property(property: 'user_email_verified', type: 'boolean', description: 'Whether the user email is verified', nullable: true),
+        new OA\Property(property: 'user_language', type: 'string', description: 'User preferred language', nullable: true),
+        new OA\Property(property: 'user_country', type: 'string', description: 'User country', nullable: true),
+        new OA\Property(property: 'allowed_return_uris', type: 'string', description: 'Space-delimited allowed return URIs'),
+        new OA\Property(property: 'allowed_origins', type: 'string', description: 'Space-delimited allowed origins'),
+    ]
+)]
+class OAuth2IntrospectionResponseSchema
+{
+}
+
+#[OA\Schema(
+    schema: 'JWKSResponse',
+    title: 'JSON Web Key Set',
+    description: 'JWK Set document per RFC 7517',
+    type: 'object',
+    properties: [
+        new OA\Property(
+            property: 'keys',
+            type: 'array',
+            description: 'Array of JSON Web Keys',
+            items: new OA\Items(
+                type: 'object',
+                properties: [
+                    new OA\Property(property: 'kty', type: 'string', description: 'Key type', example: 'RSA'),
+                    new OA\Property(property: 'kid', type: 'string', description: 'Key ID'),
+                    new OA\Property(property: 'use', type: 'string', description: 'Key usage', example: 'sig'),
+                    new OA\Property(property: 'alg', type: 'string', description: 'Algorithm', example: 'RS256'),
+                    new OA\Property(property: 'n', type: 'string', description: 'RSA modulus (Base64urlUInt-encoded)'),
+                    new OA\Property(property: 'e', type: 'string', description: 'RSA exponent (Base64urlUInt-encoded)', example: 'AQAB'),
+                ]
+            )
+        ),
+    ]
+)]
+class JWKSResponseSchema
+{
+}
+
+#[OA\Schema(
+    schema: 'OpenIDDiscoveryResponse',
+    title: 'OpenID Connect Discovery Document',
+    description: 'OpenID Provider Configuration per OpenID Connect Discovery 1.0',
+    type: 'object',
+    properties: [
+        new OA\Property(property: 'issuer', type: 'string', format: 'uri', description: 'Issuer identifier URL'),
+        new OA\Property(property: 'authorization_endpoint', type: 'string', format: 'uri', description: 'Authorization endpoint URL'),
+        new OA\Property(property: 'token_endpoint', type: 'string', format: 'uri', description: 'Token endpoint URL'),
+        new OA\Property(property: 'userinfo_endpoint', type: 'string', format: 'uri', description: 'UserInfo endpoint URL'),
+        new OA\Property(property: 'revocation_endpoint', type: 'string', format: 'uri', description: 'Token revocation endpoint URL'),
+        new OA\Property(property: 'introspection_endpoint', type: 'string', format: 'uri', description: 'Token introspection endpoint URL'),
+        new OA\Property(property: 'jwks_uri', type: 'string', format: 'uri', description: 'JSON Web Key Set URL'),
+        new OA\Property(
+            property: 'scopes_supported',
+            type: 'array',
+            description: 'Supported OAuth2 scopes',
+            items: new OA\Items(type: 'string')
+        ),
+        new OA\Property(
+            property: 'response_types_supported',
+            type: 'array',
+            description: 'Supported response types',
+            items: new OA\Items(type: 'string')
+        ),
+        new OA\Property(
+            property: 'response_modes_supported',
+            type: 'array',
+            description: 'Supported response modes',
+            items: new OA\Items(type: 'string')
+        ),
+        new OA\Property(
+            property: 'grant_types_supported',
+            type: 'array',
+            description: 'Supported grant types',
+            items: new OA\Items(type: 'string')
+        ),
+        new OA\Property(
+            property: 'subject_types_supported',
+            type: 'array',
+            description: 'Supported subject types',
+            items: new OA\Items(type: 'string')
+        ),
+        new OA\Property(
+            property: 'id_token_signing_alg_values_supported',
+            type: 'array',
+            description: 'Supported ID token signing algorithms',
+            items: new OA\Items(type: 'string')
+        ),
+        new OA\Property(
+            property: 'code_challenge_methods_supported',
+            type: 'array',
+            description: 'Supported PKCE code challenge methods',
+            items: new OA\Items(type: 'string')
+        ),
+    ]
+)]
+class OpenIDDiscoveryResponseSchema
+{
+}

app/Swagger/Requests/OAuth2AuthorizationRequestSchema.php

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+<?php
+
+namespace App\Swagger\schemas;
+
+use OpenApi\Attributes as OA;
+
+#[OA\Schema(
+    schema: 'OAuth2AuthorizationRequest',
+    title: 'OAuth2 Authorization Request',
+    description: 'Authorization request parameters per RFC 6749 §4.1.1 and OpenID Connect Core §3.1.2.1',
+    type: 'object',
+    required: ['response_type', 'client_id', 'redirect_uri'],
+    properties: [
+        new OA\Property(property: 'response_type', type: 'string', description: 'OAuth2 response type', enum: ['code', 'token', 'id_token', 'code token', 'code id_token', 'token id_token', 'code token id_token', 'otp', 'none']),
+        new OA\Property(property: 'client_id', type: 'string', description: 'OAuth2 client identifier'),
+        new OA\Property(property: 'redirect_uri', type: 'string', format: 'uri', description: 'Redirect URI'),
+        new OA\Property(property: 'scope', type: 'string', description: 'Space-delimited scopes'),
+        new OA\Property(property: 'state', type: 'string', description: 'Opaque state parameter'),
+        new OA\Property(property: 'nonce', type: 'string', description: 'Nonce for ID token replay protection'),
+        new OA\Property(property: 'response_mode', type: 'string', description: 'Response mode override', enum: ['query', 'fragment', 'form_post', 'direct']),
+        new OA\Property(property: 'prompt', type: 'string', description: 'User interaction prompts'),
+        new OA\Property(property: 'login_hint', type: 'string', description: 'Login identifier hint'),
+        new OA\Property(property: 'code_challenge', type: 'string', description: 'PKCE code challenge'),
+        new OA\Property(property: 'code_challenge_method', type: 'string', description: 'PKCE challenge method', enum: ['plain', 'S256']),
+    ]
+)]
+class OAuth2AuthorizationRequestSchema
+{
+}

app/Swagger/Requests/OAuth2EndSessionRequestSchema.php

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+<?php
+
+namespace App\Swagger\schemas;
+
+use OpenApi\Attributes as OA;
+
+#[OA\Schema(
+    schema: 'OAuth2EndSessionRequest',
+    title: 'OAuth2 End Session Request',
+    description: 'RP-Initiated Logout request parameters per OpenID Connect Session Management 1.0',
+    type: 'object',
+    required: ['client_id'],
+    properties: [
+        new OA\Property(property: 'client_id', type: 'string', description: 'OAuth2 client identifier'),
+        new OA\Property(property: 'id_token_hint', type: 'string', description: 'Previously issued ID token'),
+        new OA\Property(property: 'post_logout_redirect_uri', type: 'string', format: 'uri', description: 'URI to redirect after logout'),
+        new OA\Property(property: 'state', type: 'string', description: 'Opaque state parameter'),
+    ]
+)]
+class OAuth2EndSessionRequestSchema
+{
+}

app/Swagger/Requests/OAuth2TokenIntrospectionRequestSchema.php

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+<?php
+
+namespace App\Swagger\schemas;
+
+use OpenApi\Attributes as OA;
+
+#[OA\Schema(
+    schema: 'OAuth2TokenIntrospectionRequest',
+    title: 'OAuth2 Token Introspection Request',
+    description: 'Token introspection request parameters per RFC 7662 §2.1',
+    type: 'object',
+    required: ['token'],
+    properties: [
+        new OA\Property(property: 'token', type: 'string', description: 'The token to introspect'),
+        new OA\Property(property: 'client_id', type: 'string', description: 'Client identifier (if not using HTTP Basic auth)'),
+        new OA\Property(property: 'client_secret', type: 'string', description: 'Client secret (if not using HTTP Basic auth)'),
+    ]
+)]
+class OAuth2TokenIntrospectionRequestSchema
+{
+}

app/Swagger/Requests/OAuth2TokenRequestSchema.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Swagger\schemas;
+
+use OpenApi\Attributes as OA;
+
+#[OA\Schema(
+    schema: 'OAuth2TokenRequest',
+    title: 'OAuth2 Token Request',
+    description: 'Token request parameters per RFC 6749 §4.1.3. Fields required vary by grant_type.',
+    type: 'object',
+    required: ['grant_type'],
+    properties: [
+        new OA\Property(property: 'grant_type', type: 'string', description: 'OAuth2 grant type', enum: ['authorization_code', 'client_credentials', 'password', 'refresh_token', 'passwordless']),
+        new OA\Property(property: 'code', type: 'string', description: 'Authorization code (authorization_code grant)'),
+        new OA\Property(property: 'redirect_uri', type: 'string', format: 'uri', description: 'Redirect URI (must match the one used in authorization request)'),
+        new OA\Property(property: 'client_id', type: 'string', description: 'Client identifier (if not using HTTP Basic auth)'),
+        new OA\Property(property: 'client_secret', type: 'string', description: 'Client secret (if not using HTTP Basic auth)'),
+        new OA\Property(property: 'refresh_token', type: 'string', description: 'Refresh token (refresh_token grant)'),
+        new OA\Property(property: 'scope', type: 'string', description: 'Space-delimited scopes'),
+        new OA\Property(property: 'username', type: 'string', description: 'Username (password grant)'),
+        new OA\Property(property: 'password', type: 'string', description: 'Password (password grant)'),
+        new OA\Property(property: 'audience', type: 'string', description: 'Target audience (client_credentials grant)'),
+        new OA\Property(property: 'connection', type: 'string', description: 'Connection type (passwordless grant)', enum: ['sms', 'email', 'inline']),
+        new OA\Property(property: 'send', type: 'string', description: 'Delivery method (passwordless grant)', enum: ['code', 'link']),
+        new OA\Property(property: 'email', type: 'string', description: 'Email address (passwordless grant)'),
+        new OA\Property(property: 'phone_number', type: 'string', description: 'Phone number (passwordless grant)'),
+    ]
+)]
+class OAuth2TokenRequestSchema
+{
+}

app/Swagger/Requests/OAuth2TokenRevocationRequestSchema.php

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+<?php
+
+namespace App\Swagger\schemas;
+
+use OpenApi\Attributes as OA;
+
+#[OA\Schema(
+    schema: 'OAuth2TokenRevocationRequest',
+    title: 'OAuth2 Token Revocation Request',
+    description: 'Token revocation request parameters per RFC 7009 §2.1',
+    type: 'object',
+    required: ['token'],
+    properties: [
+        new OA\Property(property: 'token', type: 'string', description: 'The token to revoke'),
+        new OA\Property(property: 'token_type_hint', type: 'string', description: 'Hint about the token type', enum: ['access_token', 'refresh_token']),
+        new OA\Property(property: 'client_id', type: 'string', description: 'Client identifier (if not using HTTP Basic auth)'),
+        new OA\Property(property: 'client_secret', type: 'string', description: 'Client secret (if not using HTTP Basic auth)'),
+    ]
+)]
+class OAuth2TokenRevocationRequestSchema
+{
+}

app/Swagger/Security/OAuth2ProviderControllerSecuritySchema.php

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+<?php
+
+namespace App\Swagger\schemas;
+
+use OpenApi\Attributes as OA;
+
+#[OA\SecurityScheme(
+    securityScheme: 'OAuth2ProviderSecurity',
+    type: 'oauth2',
+    description: 'OAuth2 client credentials authentication for protocol endpoints (token, revoke, introspection)',
+    flows: [
+        new OA\Flow(
+            flow: 'clientCredentials',
+            tokenUrl: L5_SWAGGER_CONST_TOKEN_URL,
+            scopes: []
+        ),
+    ]
+)]
+class OAuth2ProviderControllerSecuritySchema
+{
+}