import * as plugins from '../plugins.js';
import * as appstate from '../appstate.js';
import * as interfaces from '../../ts_interfaces/index.js';
import { appRouter } from '../router.js';
import {
  DeesElement,
  customElement,
  html,
  state,
  css,
  cssManager,
  type TemplateResult,
} from '@design.estate/dees-element';

import type { SgViewDashboard } from './sg-view-dashboard.js';
import type { SgViewOrganizations } from './sg-view-organizations.js';
import type { SgViewPackages } from './sg-view-packages.js';
import type { SgViewTokens } from './sg-view-tokens.js';
import type { SgViewSettings } from './sg-view-settings.js';
import type { SgViewAdmin } from './sg-view-admin.js';

@customElement('sg-app-shell')
export class SgAppShell extends DeesElement {
  @state()
  accessor loginState: appstate.ILoginState = { identity: null, isLoggedIn: false };

  @state()
  accessor uiState: appstate.IUiState = { activeView: 'dashboard' };

  @state()
  accessor loginLoading: boolean = false;

  @state()
  accessor loginError: string = '';

  @state()
  accessor authProviders: interfaces.data.IPublicAuthProvider[] = [];

  @state()
  accessor localAuthEnabled: boolean = true;

  private viewTabs = [
    {
      name: 'Dashboard',
      iconName: 'lucide:layoutDashboard',
      element: (async () => (await import('./sg-view-dashboard.js')).SgViewDashboard)(),
    },
    {
      name: 'Organizations',
      iconName: 'lucide:building2',
      element: (async () => (await import('./sg-view-organizations.js')).SgViewOrganizations)(),
    },
    {
      name: 'Packages',
      iconName: 'lucide:package',
      element: (async () => (await import('./sg-view-packages.js')).SgViewPackages)(),
    },
    {
      name: 'Tokens',
      iconName: 'lucide:key',
      element: (async () => (await import('./sg-view-tokens.js')).SgViewTokens)(),
    },
    {
      name: 'Settings',
      iconName: 'lucide:settings',
      element: (async () => (await import('./sg-view-settings.js')).SgViewSettings)(),
    },
    {
      name: 'Admin',
      iconName: 'lucide:shield',
      element: (async () => (await import('./sg-view-admin.js')).SgViewAdmin)(),
    },
  ];

  private allResolvedViewTabs: Array<{ name: string; iconName?: string; element: any }> = [];
  private resolvedViewTabs: Array<{ name: string; iconName?: string; element: any }> = [];

  constructor() {
    super();
    document.title = 'Stack.Gallery Registry';

    const loginSubscription = appstate.loginStatePart
      .select((s) => s)
      .subscribe((loginState) => {
        this.loginState = loginState;
        // Re-filter tabs when login state changes
        if (loginState.isLoggedIn && this.allResolvedViewTabs.length > 0) {
          this.resolvedViewTabs = loginState.identity?.isSystemAdmin
            ? this.allResolvedViewTabs
            : this.allResolvedViewTabs.filter((t) => t.name !== 'Admin');
        }
      });
    this.rxSubscriptions.push(loginSubscription);

    const uiSubscription = appstate.uiStatePart
      .select((s) => s)
      .subscribe((uiState) => {
        this.uiState = uiState;
        this.syncAppdashView(uiState.activeView);
      });
    this.rxSubscriptions.push(uiSubscription);
  }

  public static styles = [
    cssManager.defaultStyles,
    css`
      :host {
        display: block;
        width: 100%;
        height: 100%;
      }
      .maincontainer {
        width: 100%;
        height: 100vh;
      }
    `,
  ];

  public render(): TemplateResult {
    if (!this.loginState.isLoggedIn) {
      return html`
        <div class="maincontainer">
          <sg-login-view
            .providers=${this.authProviders}
            .localAuthEnabled=${this.localAuthEnabled}
            .loading=${this.loginLoading}
            .error=${this.loginError}
            @login=${(e: CustomEvent) => this.handleLocalLogin(e)}
            @oauth-login=${(e: CustomEvent) => this.handleOAuthLogin(e)}
            @ldap-login=${(e: CustomEvent) => this.handleLdapLogin(e)}
          ></sg-login-view>
        </div>
      `;
    }

    return html`
      <div class="maincontainer">
        <dees-simple-appdash
          name="Stack.Gallery"
          .viewTabs=${this.resolvedViewTabs}
          .selectedView=${this.resolvedViewTabs.find(
            (t) => t.name.toLowerCase().replace(/\s+/g, '-') === this.uiState.activeView,
          ) || this.resolvedViewTabs[0]}
        >
        </dees-simple-appdash>
      </div>
    `;
  }

  public async firstUpdated() {
    // Fetch auth providers for login page
    this.fetchAuthProviders();

    // Resolve async view tab imports
    const allTabs = await Promise.all(
      this.viewTabs.map(async (tab) => ({
        name: tab.name,
        iconName: tab.iconName,
        element: await tab.element,
      })),
    );

    // Filter admin tab based on user role
    this.resolvedViewTabs = this.loginState.identity?.isSystemAdmin
      ? allTabs
      : allTabs.filter((t) => t.name !== 'Admin');

    this.requestUpdate();
    await this.updateComplete;

    const appDash = this.shadowRoot!.querySelector('dees-simple-appdash') as any;
    if (appDash) {
      appDash.addEventListener('view-select', (e: CustomEvent) => {
        const viewName = e.detail.view.name.toLowerCase().replace(/\s+/g, '-');
        appRouter.navigateToView(viewName);
      });
      appDash.addEventListener('logout', async () => {
        await appstate.loginStatePart.dispatchAction(appstate.logoutAction, null);
      });

      // Load initial view
      if (this.resolvedViewTabs.length > 0) {
        const currentActiveView = appstate.uiStatePart.getState().activeView;
        const initialView = this.resolvedViewTabs.find(
          (t) => t.name.toLowerCase().replace(/\s+/g, '-') === currentActiveView,
        ) || this.resolvedViewTabs[0];
        await appDash.loadView(initialView);
      }
    }

    // Check for stored session
    const loginState = appstate.loginStatePart.getState();
    if (loginState.identity?.jwt) {
      if (loginState.identity.expiresAt > Date.now()) {
        // Validate token with server in the background
        try {
          await appstate.settingsStatePart.dispatchAction(appstate.fetchMeAction, null);
        } catch {
          console.warn('Stored session invalid, returning to login');
          await appstate.loginStatePart.dispatchAction(appstate.logoutAction, null);
        }
      } else {
        // Token expired, try refresh
        const newState = await appstate.loginStatePart.dispatchAction(
          appstate.refreshTokenAction, null,
        );
        if (!newState.isLoggedIn) {
          // Refresh failed
          await appstate.loginStatePart.dispatchAction(appstate.logoutAction, null);
        }
      }
    }
  }

  private async fetchAuthProviders() {
    try {
      const typedRequest = new plugins.domtools.plugins.typedrequest.TypedRequest<
        interfaces.requests.IReq_GetAuthProviders
      >('/typedrequest', 'getAuthProviders');
      const response = await typedRequest.fire({});
      this.authProviders = response.providers;
      this.localAuthEnabled = response.localAuthEnabled;
    } catch {
      // Default to local auth if we can't fetch providers
      this.localAuthEnabled = true;
    }
  }

  private async handleLocalLogin(e: CustomEvent) {
    const { email, password } = e.detail;
    this.loginLoading = true;
    this.loginError = '';
    try {
      const newState = await appstate.loginStatePart.dispatchAction(appstate.loginAction, {
        email,
        password,
      });
      if (!newState.isLoggedIn) {
        this.loginError = 'Invalid email or password';
      }
    } catch {
      this.loginError = 'Login failed. Please try again.';
    }
    this.loginLoading = false;
  }

  private async handleOAuthLogin(e: CustomEvent) {
    const { providerId } = e.detail;
    try {
      const typedRequest = new plugins.domtools.plugins.typedrequest.TypedRequest<
        interfaces.requests.IReq_OAuthAuthorize
      >('/typedrequest', 'oauthAuthorize');
      const response = await typedRequest.fire({ providerId });
      // Redirect to OAuth provider
      window.location.href = response.redirectUrl;
    } catch {
      this.loginError = 'OAuth login failed. Please try again.';
    }
  }

  private async handleLdapLogin(e: CustomEvent) {
    const { providerId, username, password } = e.detail;
    this.loginLoading = true;
    this.loginError = '';
    try {
      const typedRequest = new plugins.domtools.plugins.typedrequest.TypedRequest<
        interfaces.requests.IReq_LdapLogin
      >('/typedrequest', 'ldapLogin');
      const response = await typedRequest.fire({ providerId, username, password });
      if (response.identity) {
        appstate.loginStatePart.setState({
          identity: response.identity,
          isLoggedIn: true,
        });
      } else {
        this.loginError = response.errorMessage || 'LDAP login failed';
      }
    } catch {
      this.loginError = 'LDAP login failed. Please try again.';
    }
    this.loginLoading = false;
  }

  private syncAppdashView(viewName: string): void {
    const appDash = this.shadowRoot?.querySelector('dees-simple-appdash') as any;
    if (!appDash || this.resolvedViewTabs.length === 0) return;
    const targetTab = this.resolvedViewTabs.find(
      (t) => t.name.toLowerCase().replace(/\s+/g, '-') === viewName,
    );
    if (!targetTab) return;
    appDash.loadView(targetTab);
  }
}