import { ROUTES } from './config.js';
import { renderDashboardPage } from '../features/dashboard/dashboard-page.js';
import { renderKitchenSelector } from '../features/kitchens/kitchen-selector.js';
import { renderLoginPage } from '../features/auth/login-page.js';
import { renderLabelCreatePage } from '../features/labels/label-create-page.js';
import { renderSettingsPage } from '../features/auth/settings-page.js';
import { renderStockDetailPage } from '../features/stock/stock-detail-page.js';
import { renderStockListPage } from '../features/stock/stock-list-page.js';

const routeDefinitions = [
  { path: ROUTES.login, render: renderLoginPage, protected: false },
  { path: ROUTES.home, render: renderDashboardPage, protected: true },
  { path: ROUTES.stock, render: renderStockListPage, protected: true },
  { path: ROUTES.stockNew, render: renderLabelCreatePage, protected: true },
  { path: ROUTES.stockDetail, render: renderStockDetailPage, protected: true },
  { path: ROUTES.labelsNew, render: renderLabelCreatePage, protected: true },
  { path: ROUTES.settings, render: renderSettingsPage, protected: false },
];

function normalizeHashRoute() {
  const route = window.location.hash.replace(/^#/, '') || ROUTES.home;
  return route.startsWith('/') ? route : `/${route}`;
}

function matchRoute(pathname) {
  for (const definition of routeDefinitions) {
    const keys = [];
    const pattern = definition.path.replace(/:([^/]+)/g, (_, key) => {
      keys.push(key);
      return '([^/]+)';
    });

    const regex = new RegExp(`^${pattern}$`);
    const match = pathname.match(regex);
    if (!match) {
      continue;
    }

    const params = keys.reduce((accumulator, key, index) => {
      accumulator[key] = decodeURIComponent(match[index + 1]);
      return accumulator;
    }, {});

    return { ...definition, params };
  }

  return null;
}

export function navigate(path) {
  window.location.hash = path;
}

export function getRouteContext() {
  return window.__loncRouteContext || { path: ROUTES.home, params: {} };
}

export function createRouter({ Alpine, store, outlet }) {
  const render = async () => {
    const pathname = normalizeHashRoute();
    const match = matchRoute(pathname);

    if (!match) {
      navigate(ROUTES.home);
      return;
    }

    if (match.protected && !store.isConnected) {
      navigate(ROUTES.login);
      return;
    }

    if (
      store.isConnected &&
      !store.activeKitchen &&
      pathname !== ROUTES.login &&
      pathname !== ROUTES.settings
    ) {
      outlet.innerHTML = renderKitchenSelector();
      Alpine.initTree(outlet);
      return;
    }

    window.__loncRouteContext = { path: pathname, params: match.params };
    outlet.innerHTML = match.render();
    Alpine.initTree(outlet);
  };

  window.addEventListener('hashchange', render);

  return {
    start: render,
    render,
  };
}