{% extends "base.html" %}
{% block title %}Brewlog · Login{% endblock %}
{% block head %}
<script src="/webauthn.js"></script>
{% endblock %}
{% block content %}
<div class="mx-auto max-w-md">
  <div class="rounded-lg border border-amber-300 bg-amber-100/80 p-6 shadow-sm">
    <h1 class="text-2xl font-semibold text-amber-700">Login</h1>
    <p class="mt-2 text-sm text-stone-600">
      Sign in with your passkey to manage your coffee log.
    </p>

    <div id="login-error" class="mt-4 hidden rounded-md bg-red-100 border border-red-300 p-3 text-sm text-red-800"></div>

    <div id="login-unsupported" class="mt-4 hidden rounded-md bg-yellow-100 border border-yellow-300 p-3 text-sm text-yellow-800">
      Your browser does not support passkeys. Please use a modern browser (Chrome, Firefox, Safari, or Edge).
    </div>

    <div class="mt-6">
      <button
        id="login-button"
        type="button"
        class="w-full rounded-md bg-amber-600 px-4 py-3 text-sm font-semibold text-amber-50 transition hover:bg-amber-500 disabled:opacity-50 disabled:cursor-not-allowed"
      >
        Sign in with Passkey
      </button>

      <div id="login-loading" class="mt-4 hidden text-center text-sm text-stone-500">
        <p>Waiting for passkey...</p>
      </div>
    </div>
  </div>
</div>

<script>
  document.addEventListener("DOMContentLoaded", function () {
    const button = document.getElementById("login-button");
    const errorDiv = document.getElementById("login-error");
    const loadingDiv = document.getElementById("login-loading");
    const unsupportedDiv = document.getElementById("login-unsupported");

    // Check WebAuthn support
    if (!window.PublicKeyCredential) {
      button.disabled = true;
      unsupportedDiv.classList.remove("hidden");
      return;
    }

    // Check for CLI callback query params
    const params = new URLSearchParams(window.location.search);
    let queryString = "";
    if (params.has("cli_callback")) {
      queryString = "?" + params.toString();
    }

    button.addEventListener("click", async function () {
      errorDiv.classList.add("hidden");
      loadingDiv.classList.remove("hidden");
      button.disabled = true;

      try {
        const result = await startPasskeyAuthentication(queryString);

        if (result.redirect) {
          window.location.href = result.redirect;
        } else {
          window.location.href = "/";
        }
      } catch (err) {
        errorDiv.textContent = err.message;
        errorDiv.classList.remove("hidden");
        loadingDiv.classList.add("hidden");
        button.disabled = false;
      }
    });
  });
</script>
{% endblock %}