// modal.js — reusable themed modal/dialog helpers, shared by the
// dashboard and the per-agent UI. An in-theme replacement for the
// browser's native `confirm()` / `alert()` overlays so destructive
// actions and prompts match each page's chrome instead of a jarring OS
// dialog.
//
// The custom elements themselves (`<hive-dialog>`, `<hive-toast>`,
// `<hive-btn>`) each live in their own directory (one component = one
// dir: `hive-dialog/`, `hive-toast/`, `hive-btn/`) — real per-component
// style encapsulation, CSS in real `.css` files imported as raw text
// (see each component's own header comment for the design rationale).
// This file is the orchestration layer on top: `openDialog` is the
// general primitive (any title/message/content + a row of buttons);
// `themedConfirm`/`themedPrompt`/`themedToast` are thin wrappers built on
// it. It's the single entry point external packages import
// (`@hive/shared/modal.js`) — the component internals aren't exported
// individually.
//
// Other `.btn` consumers across the app stay on the light-DOM `.btn`
// class for now — migrating them is a separate follow-up.

import { el } from './dom.js';
import './hive-dialog/hive-dialog.js'; // registers <hive-dialog> — side-effect import
import './hive-toast/hive-toast.js'; // registers <hive-toast> — side-effect import

// openDialog({ title, message, content, buttons, danger, dismissable })
//   → Promise resolving to the clicked button's `value`, or `null` when the
//     dialog is dismissed (Escape, backdrop click, or a button whose value is
//     null). `content` is an optional DOM node rendered between the message
//     and the buttons (checkboxes, custom fields, …) — built by the caller
//     with `el()` and appended into the dialog's shadow root once mounted,
//     same as any other node (a JS-created element isn't bound to a
//     document/shadow-root until it's actually appended somewhere).
//     `buttons` is `[{ label, value, danger?, class?, autofocus? }]`,
//     rendered right-aligned. Initial focus: the `autofocus` button if any,
//     else — for a `danger` dialog — the first non-destructive button (so a
//     stray Enter can't fire the destructive path), else the last button.
export function openDialog(opts = {}) {
  return new Promise((resolve) => {
    const dlg = document.createElement('hive-dialog');
    dlg._opts = opts;
    dlg.addEventListener('hive-dialog-close', (e) => resolve(e.detail), { once: true });
    document.body.append(dlg);
  });
}

// themedConfirm({ title, message, danger, confirmLabel, cancelLabel, checkboxes })
//   → Promise<null | { [name]: bool }>. `null` = cancelled; otherwise an
//   object of the checkbox states keyed by `name` (`{}` when there are none).
//   Example:
//     const r = await themedConfirm({ message: `stop ${n}?`, danger: true,
//       confirmLabel: '■ stop', checkboxes: [{ name: 'graceful', label: '…' }] });
//     if (!r) return;            // cancelled
//     doStop(r.graceful);
export function themedConfirm(opts = {}) {
  const {
    title = '', message = '', danger = false,
    confirmLabel = 'confirm', cancelLabel = 'cancel', checkboxes = [],
  } = opts;

  const boxes = checkboxes.map((cb) => {
    const input = el('input', { type: 'checkbox', class: 'check', name: cb.name });
    if (cb.checked) input.checked = true;
    const row = el('label', { class: 'checkrow' },
      input, el('span', {}, cb.label || cb.name));
    return { input, row };
  });
  const content = boxes.length
    ? el('div', { class: 'checks' }, ...boxes.map((b) => b.row))
    : null;

  return openDialog({
    title,
    message,
    content,
    danger,
    buttons: [
      { label: cancelLabel, value: null, class: 'cancel', autofocus: danger },
      { label: confirmLabel, value: 'confirm', danger, class: 'confirm', autofocus: !danger },
    ],
  }).then((v) => {
    if (v !== 'confirm') return null;
    const out = {};
    for (let i = 0; i < boxes.length; i++) out[checkboxes[i].name] = boxes[i].input.checked;
    return out;
  });
}

// themedPrompt({ title, message, label, placeholder, value, confirmLabel, cancelLabel })
//   → Promise<string | null>. Themed replacement for window.prompt(): a
//   resizable <textarea> dialog that resolves to the entered string on confirm,
//   or null on cancel. Chat-box key behaviour: **Enter submits**, **Shift+Enter
//   inserts a newline** — so short answers are one keystroke while multi-line
//   reasons (e.g. an approval deny note) are still possible. Escape cancels
//   (via openDialog).
export function themedPrompt(opts = {}) {
  const {
    title = '', message = '', label = '', placeholder = '', value = '',
    confirmLabel = 'ok', cancelLabel = 'cancel',
  } = opts;
  const input = el('textarea', { class: 'input textarea', rows: '3', placeholder });
  if (value) input.value = value;
  // Enter submits (clicks the confirm button mounted by openDialog);
  // Shift+Enter falls through to the textarea's default newline insert.
  // `closest()`/`querySelector()` stay within the shadow tree the input
  // lives in, so this resolves to the dialog's own `.box`/confirm button
  // without leaking across instances. The confirm button is selected by
  // its `variant` attribute now (hive-btn.js), not a CSS class.
  input.addEventListener('keydown', (e) => {
    if (e.key === 'Enter' && !e.shiftKey) {
      e.preventDefault();
      input.closest('.box')?.querySelector('[variant="confirm"]')?.click();
    }
  });
  const content = el('div', { class: 'promptfield' },
    label ? el('label', { class: 'promptlabel' }, label) : null,
    input);
  const result = openDialog({
    title,
    message,
    content,
    buttons: [
      { label: cancelLabel, value: '__cancel__', class: 'cancel' },
      { label: confirmLabel, value: '__ok__', class: 'confirm', autofocus: true },
    ],
  }).then((v) => (v === '__ok__' ? input.value : null));
  // Prefer focusing the field over the OK button once the dialog has mounted.
  setTimeout(() => input.focus(), 0);
  return result;
}

// themedToast(message, { type, duration }) — non-blocking transient
//   notification; a lighter alternative to a modal for feedback that needs no
//   decision (errors, validation, status). Stacks in a fixed top-right
//   container, auto-dismisses after `duration` ms (errors linger longer), and
//   can be clicked to dismiss early. `type` ∈ {'info','error','ok'}.
//   The stack container is a plain positioning wrapper (not itself a
//   component — no theming, no encapsulation need), so it's styled with a
//   one-off inline style rather than a stylesheet.
export function themedToast(message, opts = {}) {
  let container = document.getElementById('tc-toasts');
  if (!container) {
    container = document.createElement('div');
    container.id = 'tc-toasts';
    Object.assign(container.style, {
      position: 'fixed',
      top: '1em',
      right: '1em',
      zIndex: '1100',
      display: 'flex',
      flexDirection: 'column',
      gap: '0.5em',
      maxWidth: 'min(28em, 92vw)',
      pointerEvents: 'none',
    });
    document.body.append(container);
  }
  const toast = document.createElement('hive-toast');
  toast._message = message;
  toast._opts = opts;
  container.append(toast);
  return toast;
}