// <LoginFlow> — the `needs_login_idle` / `needs_login_in_progress`
// overlay. Ports app.js's `renderNeedsLoginIdle`/`renderLoginInProgress`
// as real functional UI, not just a status label: an agent whose
// credentials got rotated (or hit `/logout`) has NO other way back
// online, so this is load-bearing, not cosmetic. Reuses agent.css's
// `.status-needs-login`/`.btn-login`/`.loginform`/`.loginform-reveal`
// rules verbatim (same class names as the old markup).
//
// mara (screenshot review): "reuse the popup component for the login,
// the floating separate panels should be one card." The old markup's
// `.agent-status-overlay > *` rule boxed every direct-child `<p>`/
// `<form>` separately (a fine translation of `el().append()`-per-line,
// but not what a hand-authored component should do) — this renders one
// `.login-card` instead, styled with the same "elevated surface" look
// `Dropdown`'s `.ui-dropdown` already established (`@hive/shared/
// dropdown/Dropdown.css`), not `Dropdown` itself (its `options.map`
// render is menu-item-shaped, not a generic content container — not a
// fit for a login form + output pane).
import { useState } from 'preact/hooks';
import type { SessionView } from '../types.js';
import { postLoginStart, postLoginCode, postLoginCancel } from '../lib/loginAction.js';
import './LoginFlow.css';

function LoginIdle({ onStarted }: { onStarted: () => void }) {
  const [busy, setBusy] = useState(false);
  const [error, setError] = useState<string | null>(null);

  function submit(e: Event) {
    e.preventDefault();
    setBusy(true);
    setError(null);
    postLoginStart().then((r) => {
      setBusy(false);
      if (r.ok) onStarted();
      else setError(r.detail ?? 'failed');
    });
  }

  return (
    <div class="login-card">
      <p class="status-needs-login">◌ NEEDS L0G1N</p>
      <p>
        No Claude session in <code>~/.claude/</code>. The harness is up but the turn loop is
        paused until you log in.
      </p>
      <form onSubmit={submit}>
        <button type="submit" class="btn btn-login" disabled={busy}>
          ◆ ST4RT L0G1N
        </button>
      </form>
      {error ? <p class="meta">error: {error}</p> : null}
      <p class="meta">
        Spawns <code>claude auth login</code> over plain stdio pipes. The OAuth URL will appear
        here when claude emits it; paste the resulting code back into the form below.
      </p>
    </div>
  );
}

function LoginInProgress({ session, onDone }: { session: SessionView | null; onDone: () => void }) {
  const [code, setCode] = useState('');
  const [reveal, setReveal] = useState(false);
  const [busy, setBusy] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const finished = session?.finished ?? false;

  function submitCode(e: Event) {
    e.preventDefault();
    if (!code) return;
    setBusy(true);
    setError(null);
    // Success: the next `/api/state` poll flips `status` back to
    // `online` (or leaves it `needs_login_in_progress` on a bad code,
    // with the process's own stderr showing up in `output` below) —
    // nothing local to update here either way.
    postLoginCode(code).then((r) => {
      setBusy(false);
      if (!r.ok) setError(r.detail ?? 'failed');
    });
  }

  function cancel(e: Event) {
    e.preventDefault();
    setBusy(true);
    postLoginCancel().then(() => {
      setBusy(false);
      onDone();
    });
  }

  return (
    <div class="login-card">
      <p class="status-needs-login">◌ L0G1N 1N PR0GRESS</p>
      {session?.url ? (
        <>
          <p>
            ▶{' '}
            <a href={session.url} target="_blank" rel="noreferrer">
              {session.url}
            </a>
          </p>
          <p class="meta">
            open this URL in a browser, complete the OAuth flow, paste the resulting code below.
          </p>
        </>
      ) : (
        <p class="meta">waiting for claude to emit an OAuth URL on stdout… (output below)</p>
      )}
      {!finished ? (
        <form class="loginform" onSubmit={submitCode}>
          <input
            name="code"
            type={reveal ? 'text' : 'password'}
            placeholder="paste OAuth code here (hidden)"
            required
            autocomplete="one-time-code"
            spellcheck={false}
            value={code}
            onInput={(e) => setCode((e.target as HTMLInputElement).value)}
          />
          <button
            type="button"
            class="loginform-reveal"
            title="show / hide pasted code"
            aria-label="show / hide pasted OAuth code"
            aria-pressed={reveal}
            onClick={() => setReveal((r) => !r)}
          >
            👁
          </button>
          <button type="submit" class="btn btn-login" disabled={busy}>
            ◆ S3ND C0DE
          </button>
        </form>
      ) : null}
      <form style={{ marginTop: '0.4em' }} onSubmit={cancel}>
        <button type="submit" class="btn btn-cancel" disabled={busy}>
          cancel + kill
        </button>
      </form>
      {finished ? (
        <p class="status-needs-login">
          claude process exited: {session?.exit_note || 'exited'}. Start over if needed.
        </p>
      ) : null}
      {error ? <p class="meta">error: {error}</p> : null}
      <h3>output</h3>
      <pre class="diff">{session?.output || ''}</pre>
    </div>
  );
}

export function LoginFlow({
  status,
  session,
  onRefresh,
}: {
  status: 'needs_login_idle' | 'needs_login_in_progress';
  session: SessionView | null;
  onRefresh: () => void;
}) {
  return (
    <div class="agent-status-overlay">
      {status === 'needs_login_idle' ? (
        <LoginIdle onStarted={onRefresh} />
      ) : (
        <LoginInProgress session={session} onDone={onRefresh} />
      )}
    </div>
  );
}