/**
 * Settings Layout
 *
 * Provides a sidebar navigation for settings pages with grouped sections.
 * Used as a wrapper for all /settings/* routes.
 */

import React from 'react';
import { Outlet, Link, useLocation, useNavigate, useOutletContext } from 'react-router-dom';
import { useTranslation } from 'react-i18next';
import {
  ArrowLeft,
  Building2,
  Palette,
  Layers,
  Globe,
  Key,
  Lock,
  Mail,
  Phone,
  CreditCard,
  AlertTriangle,
  Calendar,
} from 'lucide-react';
import {
  SettingsSidebarSection,
  SettingsSidebarItem,
} from '../components/navigation/SidebarComponents';
import UnfinishedBadge from '../components/ui/UnfinishedBadge';
import { Business, User, PlanPermissions } from '../types';
import { usePlanFeatures, FeatureKey } from '../hooks/usePlanFeatures';

interface ParentContext {
  user: User;
  business: Business;
  updateBusiness: (updates: Partial<Business>) => void;
}

// Map settings pages to their required plan features
const SETTINGS_PAGE_FEATURES: Record<string, FeatureKey> = {
  '/settings/branding': 'white_label',
  '/settings/custom-domains': 'custom_domain',
  '/settings/api': 'api_access',
  '/settings/authentication': 'custom_oauth',
  '/settings/sms-calling': 'sms_reminders',
};

const SettingsLayout: React.FC = () => {
  const { t } = useTranslation();
  const location = useLocation();
  const navigate = useNavigate();
  const { canUse } = usePlanFeatures();

  // Get context from parent route (BusinessLayout)
  const parentContext = useOutletContext<ParentContext>();

  // Check if a feature is locked (returns true if locked)
  const isLocked = (feature: FeatureKey | undefined): boolean => {
    if (!feature) return false;
    return !canUse(feature);
  };

  // Get the current page's feature requirement (if any)
  const currentPageFeature = SETTINGS_PAGE_FEATURES[location.pathname];
  const currentPageLocked = isLocked(currentPageFeature);

  return (
    <div className="flex h-full bg-gray-50 dark:bg-gray-900">
      {/* Settings Sidebar */}
      <aside className="w-64 bg-white dark:bg-gray-800 border-r border-gray-200 dark:border-gray-700 flex flex-col shrink-0">
        {/* Back Button */}
        <div className="p-4 border-b border-gray-200 dark:border-gray-700">
          <button
            onClick={() => navigate('/')}
            className="flex items-center gap-2 text-sm text-gray-600 hover:text-gray-900 dark:text-gray-400 dark:hover:text-white transition-colors"
          >
            <ArrowLeft size={16} />
            <span>{t('settings.backToApp', 'Back to App')}</span>
          </button>
        </div>

        {/* Settings Title */}
        <div className="px-4 py-4">
          <h2 className="text-lg font-semibold text-gray-900 dark:text-white">
            {t('settings.title', 'Settings')}
          </h2>
        </div>

        {/* Navigation */}
        <nav className="flex-1 px-2 pb-4 space-y-3 overflow-y-auto">
          {/* Business Section */}
          <SettingsSidebarSection title={t('settings.sections.business', 'Business')}>
            <SettingsSidebarItem
              to="/settings/general"
              icon={Building2}
              label={t('settings.general.title', 'General')}
              description={t('settings.general.description', 'Name, timezone, contact')}
            />
            <SettingsSidebarItem
              to="/settings/resource-types"
              icon={Layers}
              label={t('settings.resourceTypes.title', 'Resource Types')}
              description={t('settings.resourceTypes.description', 'Staff, rooms, equipment')}
              badgeElement={<UnfinishedBadge />}
            />
            <SettingsSidebarItem
              to="/settings/booking"
              icon={Calendar}
              label={t('settings.booking.title', 'Booking')}
              description={t('settings.booking.description', 'Booking URL, redirects')}
            />
          </SettingsSidebarSection>

          {/* Branding Section */}
          <SettingsSidebarSection title={t('settings.sections.branding', 'Branding')}>
            <SettingsSidebarItem
              to="/settings/branding"
              icon={Palette}
              label={t('settings.appearance.title', 'Appearance')}
              description={t('settings.appearance.description', 'Logo, colors, theme')}
              locked={isLocked('white_label')}
            />
            <SettingsSidebarItem
              to="/settings/email-templates"
              icon={Mail}
              label={t('settings.emailTemplates.title', 'Email Templates')}
              description={t('settings.emailTemplates.description', 'Customize email designs')}
            />
            <SettingsSidebarItem
              to="/settings/custom-domains"
              icon={Globe}
              label={t('settings.customDomains.title', 'Custom Domains')}
              description={t('settings.customDomains.description', 'Use your own domain')}
              locked={isLocked('custom_domain')}
            />
          </SettingsSidebarSection>

          {/* Integrations Section */}
          <SettingsSidebarSection title={t('settings.sections.integrations', 'Integrations')}>
            <SettingsSidebarItem
              to="/settings/api"
              icon={Key}
              label={t('settings.api.title', 'API & Webhooks')}
              description={t('settings.api.description', 'API tokens, webhooks')}
              locked={isLocked('api_access')}
            />
          </SettingsSidebarSection>

          {/* Access Section */}
          <SettingsSidebarSection title={t('settings.sections.access', 'Access')}>
            <SettingsSidebarItem
              to="/settings/authentication"
              icon={Lock}
              label={t('settings.authentication.title', 'Authentication')}
              description={t('settings.authentication.description', 'OAuth, social login')}
              locked={isLocked('custom_oauth')}
            />
          </SettingsSidebarSection>

          {/* Communication Section */}
          <SettingsSidebarSection title={t('settings.sections.communication', 'Communication')}>
            <SettingsSidebarItem
              to="/settings/email"
              icon={Mail}
              label={t('settings.email.title', 'Email Setup')}
              description={t('settings.email.description', 'Email addresses for tickets')}
            />
            <SettingsSidebarItem
              to="/settings/sms-calling"
              icon={Phone}
              label={t('settings.smsCalling.title', 'SMS & Calling')}
              description={t('settings.smsCalling.description', 'Credits, phone numbers')}
              locked={isLocked('sms_reminders')}
            />
          </SettingsSidebarSection>

          {/* Billing Section */}
          <SettingsSidebarSection title={t('settings.sections.billing', 'Billing')}>
            <SettingsSidebarItem
              to="/settings/billing"
              icon={CreditCard}
              label={t('settings.billing.title', 'Plan & Billing')}
              description={t('settings.billing.description', 'Subscription, invoices')}
            />
            <SettingsSidebarItem
              to="/settings/quota"
              icon={AlertTriangle}
              label={t('settings.quota.title', 'Quota Management')}
              description={t('settings.quota.description', 'Usage limits, archiving')}
            />
          </SettingsSidebarSection>
        </nav>
      </aside>

      {/* Content Area */}
      <main className="flex-1 overflow-y-auto">
        <div className="max-w-4xl mx-auto p-8">
          <Outlet context={{
            ...parentContext,
            isFeatureLocked: currentPageLocked,
            lockedFeature: currentPageFeature,
          }} />
        </div>
      </main>
    </div>
  );
};

export default SettingsLayout;