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<h1 id="app">App</h1>
<div class="doc doc-object doc-module">
<h2 id="jwtlib.app" class="doc doc-heading">
<span class="doc doc-object-name doc-module-name">jwtlib.app</span>
</h2>
<div class="doc doc-contents first">
<p>Application-level authentication logic.</p>
<p>This module contains <strong>pure authentication and introspection logic</strong> with no
framework or transport coupling. It is intended to be used by HTTP adapters,
CLIs, background workers, and other services that require JWT-based
authentication and user resolution.</p>
<p>Responsibilities:
- User registration and login
- Stateless logout semantics
- Current-user resolution from JWTs
- Service-to-service token introspection</p>
<p>This module does NOT:
- Define HTTP routes
- Manage sessions
- Perform request parsing or response formatting
- Handle transport-level concerns</p>
<p>All functions are async-safe and fully typed.</p>
<div class="doc doc-children">
<div class="doc doc-object doc-function">
<h3 id="jwtlib.app.get_logged_in_user" class="doc doc-heading">
<span class="doc doc-object-name doc-function-name">get_logged_in_user</span>
<span class="doc doc-labels">
<small class="doc doc-label doc-label-async"><code>async</code></small>
</span>
</h3>
<div class="doc-signature highlight"><pre><span></span><code><span class="nf">get_logged_in_user</span><span class="p">(</span><span class="n">token</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">repo</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">UserRepository</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">PublicUser</span>
</code></pre></div>
<div class="doc doc-contents ">
<p>Resolve the currently authenticated user from a JWT.</p>
<p>Validates the provided JWT, extracts its subject, and resolves the
corresponding user from persistence.</p>
<p><span class="doc-section-title">Parameters:</span></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Description</th>
<th>Default</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td><code>token</code></td>
<td>
<code>str</code>
</td>
<td>
<div class="doc-md-description">
<p>JWT access token.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
<tr class="doc-section-item">
<td><code>repo</code></td>
<td>
<code><span title="typing.Optional">Optional</span>[<a class="autorefs autorefs-internal" title="jwtlib.repository.UserRepository" href="../repository/#jwtlib.repository.UserRepository">UserRepository</a>]</code>
</td>
<td>
<div class="doc-md-description">
<p>Optional user repository instance. If not provided, a default
repository is obtained via dependency utilities.</p>
</div>
</td>
<td>
<code>None</code>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.PublicUser" href="../models/#jwtlib.models.PublicUser">PublicUser</a></code>
</td>
<td>
<div class="doc-md-description">
<p>The authenticated user as a PublicUser.</p>
</div>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Raises:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.exceptions.InvalidToken" href="../exceptions/#jwtlib.exceptions.InvalidToken">InvalidToken</a></code>
</td>
<td>
<div class="doc-md-description">
<p>If the token is missing, malformed, or invalid.</p>
</div>
</td>
</tr>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.exceptions.AuthError" href="../exceptions/#jwtlib.exceptions.AuthError">AuthError</a></code>
</td>
<td>
<div class="doc-md-description">
<p>If the token is valid, but the user cannot be resolved.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="doc doc-object doc-function">
<h3 id="jwtlib.app.introspect_token" class="doc doc-heading">
<span class="doc doc-object-name doc-function-name">introspect_token</span>
<span class="doc doc-labels">
<small class="doc doc-label doc-label-async"><code>async</code></small>
</span>
</h3>
<div class="doc-signature highlight"><pre><span></span><code><span class="nf">introspect_token</span><span class="p">(</span><span class="n">token</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">repo</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">UserRepository</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">IntrospectResponse</span>
</code></pre></div>
<div class="doc doc-contents ">
<p>Introspect a JWT for service-to-service authentication.</p>
<p>Validates the provided token and resolves the associated user, returning
a structured introspection response suitable for internal service use.</p>
<p>This function never raises authentication exceptions. Instead, it returns
a typed response indicating token validity and user presence.</p>
<p><span class="doc-section-title">Parameters:</span></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Description</th>
<th>Default</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td><code>token</code></td>
<td>
<code>str</code>
</td>
<td>
<div class="doc-md-description">
<p>JWT access token to introspect.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
<tr class="doc-section-item">
<td><code>repo</code></td>
<td>
<code><span title="typing.Optional">Optional</span>[<a class="autorefs autorefs-internal" title="jwtlib.repository.UserRepository" href="../repository/#jwtlib.repository.UserRepository">UserRepository</a>]</code>
</td>
<td>
<div class="doc-md-description">
<p>Optional user repository instance. If not provided, a default
repository is obtained via dependency utilities.</p>
</div>
</td>
<td>
<code>None</code>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.IntrospectResponse" href="../models/#jwtlib.models.IntrospectResponse">IntrospectResponse</a></code>
</td>
<td>
<div class="doc-md-description">
<p>IntrospectResponse indicating one of:</p>
</div>
</td>
</tr>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.IntrospectResponse" href="../models/#jwtlib.models.IntrospectResponse">IntrospectResponse</a></code>
</td>
<td>
<div class="doc-md-description">
<ul>
<li>Valid token with associated user</li>
</ul>
</div>
</td>
</tr>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.IntrospectResponse" href="../models/#jwtlib.models.IntrospectResponse">IntrospectResponse</a></code>
</td>
<td>
<div class="doc-md-description">
<ul>
<li>Invalid token</li>
</ul>
</div>
</td>
</tr>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.IntrospectResponse" href="../models/#jwtlib.models.IntrospectResponse">IntrospectResponse</a></code>
</td>
<td>
<div class="doc-md-description">
<ul>
<li>Valid token with no corresponding user</li>
</ul>
</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="doc doc-object doc-function">
<h3 id="jwtlib.app.login_user" class="doc doc-heading">
<span class="doc doc-object-name doc-function-name">login_user</span>
<span class="doc doc-labels">
<small class="doc doc-label doc-label-async"><code>async</code></small>
</span>
</h3>
<div class="doc-signature highlight"><pre><span></span><code><span class="nf">login_user</span><span class="p">(</span><span class="n">user</span><span class="p">:</span> <span class="n">LoginRequest</span><span class="p">,</span> <span class="n">repo</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">UserRepository</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">LoginResponse</span>
</code></pre></div>
<div class="doc doc-contents ">
<p>Authenticate a user and issue an access token.</p>
<p>Verifies the provided credentials and returns a JWT access token on success.</p>
<p><span class="doc-section-title">Parameters:</span></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Description</th>
<th>Default</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td><code>user</code></td>
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.LoginRequest" href="../models/#jwtlib.models.LoginRequest">LoginRequest</a></code>
</td>
<td>
<div class="doc-md-description">
<p>Login payload containing username and password.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
<tr class="doc-section-item">
<td><code>repo</code></td>
<td>
<code><span title="typing.Optional">Optional</span>[<a class="autorefs autorefs-internal" title="jwtlib.repository.UserRepository" href="../repository/#jwtlib.repository.UserRepository">UserRepository</a>]</code>
</td>
<td>
<div class="doc-md-description">
<p>Optional user repository instance. If not provided, a default
repository is obtained via dependency utilities.</p>
</div>
</td>
<td>
<code>None</code>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.LoginResponse" href="../models/#jwtlib.models.LoginResponse">LoginResponse</a></code>
</td>
<td>
<div class="doc-md-description">
<p>LoginResponse containing the issued access token and related metadata.</p>
</div>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Raises:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.exceptions.AuthError" href="../exceptions/#jwtlib.exceptions.AuthError">AuthError</a></code>
</td>
<td>
<div class="doc-md-description">
<p>If the credentials are invalid.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="doc doc-object doc-function">
<h3 id="jwtlib.app.logout_user" class="doc doc-heading">
<span class="doc doc-object-name doc-function-name">logout_user</span>
<span class="doc doc-labels">
<small class="doc doc-label doc-label-async"><code>async</code></small>
</span>
</h3>
<div class="doc-signature highlight"><pre><span></span><code><span class="nf">logout_user</span><span class="p">()</span> <span class="o">-&gt;</span> <span class="n">LogoutResponse</span>
</code></pre></div>
<div class="doc doc-contents ">
<p>Perform a stateless logout.</p>
<p>This function does not invalidate tokens server-side. Instead, it provides
a standardized response indicating that the client must discard its token.</p>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.LogoutResponse" href="../models/#jwtlib.models.LogoutResponse">LogoutResponse</a></code>
</td>
<td>
<div class="doc-md-description">
<p>LogoutResponse containing a logout confirmation message.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="doc doc-object doc-function">
<h3 id="jwtlib.app.register_user" class="doc doc-heading">
<span class="doc doc-object-name doc-function-name">register_user</span>
<span class="doc doc-labels">
<small class="doc doc-label doc-label-async"><code>async</code></small>
</span>
</h3>
<div class="doc-signature highlight"><pre><span></span><code><span class="nf">register_user</span><span class="p">(</span><span class="n">user</span><span class="p">:</span> <span class="n">RegisterRequest</span><span class="p">,</span> <span class="n">repo</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">UserRepository</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">PublicUser</span>
</code></pre></div>
<div class="doc doc-contents ">
<p>Register a new user.</p>
<p>Creates a new user record using the provided registration data.</p>
<p><span class="doc-section-title">Parameters:</span></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Description</th>
<th>Default</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td><code>user</code></td>
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.RegisterRequest" href="../models/#jwtlib.models.RegisterRequest">RegisterRequest</a></code>
</td>
<td>
<div class="doc-md-description">
<p>Registration payload containing username, email, and password.</p>
</div>
</td>
<td>
<em>required</em>
</td>
</tr>
<tr class="doc-section-item">
<td><code>repo</code></td>
<td>
<code><span title="typing.Optional">Optional</span>[<a class="autorefs autorefs-internal" title="jwtlib.repository.UserRepository" href="../repository/#jwtlib.repository.UserRepository">UserRepository</a>]</code>
</td>
<td>
<div class="doc-md-description">
<p>Optional user repository instance. If not provided, a default
repository is obtained via dependency utilities.</p>
</div>
</td>
<td>
<code>None</code>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-internal" title="jwtlib.models.PublicUser" href="../models/#jwtlib.models.PublicUser">PublicUser</a></code>
</td>
<td>
<div class="doc-md-description">
<p>The newly created user as a public user representation.</p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
</div>
</div>
</article>
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