import { demoFunc } from './dees-simple-appdash.demo.js';

import {
  customElement,
  html,
  DeesElement,
  property,
  type TemplateResult,
  cssManager,
  css,
  unsafeCSS,
  type CSSResult,
  state,
  domtools,
} from '@design.estate/dees-element';
import '../../00group-utility/dees-icon/dees-icon.js';
import type { DeesWorkspaceTerminal } from '../../00group-workspace/dees-workspace-terminal/dees-workspace-terminal.js';
import { themeDefaultStyles } from '../../00theme.js';

declare global {
  interface HTMLElementTagNameMap {
    'dees-simple-appdash': DeesSimpleAppDash;
  }
}

export interface IView {
  name: string;
  iconName?: string;
  element: DeesElement['constructor']['prototype'];
}

export type TGlobalMessageType = 'info' | 'success' | 'warning' | 'error';

export interface IGlobalMessageAction {
  name: string;
  iconName?: string;
  action: () => void | Promise<void>;
}

export interface IGlobalMessage {
  id: string;
  type: TGlobalMessageType;
  message: string;
  dismissible?: boolean;
  icon?: string;
  actions?: IGlobalMessageAction[];
}

@customElement('dees-simple-appdash')
export class DeesSimpleAppDash extends DeesElement {
  // STATIC
  public static demo = demoFunc;
  public static demoGroups = ['Simple'];
  // INSTANCE

  @property()
  accessor name: string = 'Application Dashboard';

  @property({ type: Array })
  accessor viewTabs: IView[] = [];

  @property({ type: String })
  accessor terminalSetupCommand: string = `echo "Terminal ready"`;

  @property({ type: Array })
  accessor globalMessages: IGlobalMessage[] = [];

  @state()
  accessor selectedView!: IView;

  @state()
  accessor _activeMessages: IGlobalMessage[] = [];


  public static styles = [
    themeDefaultStyles,
    cssManager.defaultStyles,
    css`
      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
      :host {
        color: ${cssManager.bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 90%)')};
        user-select: none;
        display: block;
        overflow: hidden;
        position: relative;
        height: 100%;
        width: 100%;
      }

      .maincontainer {
        position: absolute;
        top: 0px;
        left: 0px;
        right: 0px;
        bottom: 0px;
        overflow: hidden;
      }

      .appbar {
        position: absolute;
        top: 0px;
        left: 0px;
        height: calc(100% - 24px);
        width: 240px;
        background: ${cssManager.bdTheme('hsl(0 0% 99%)', 'hsl(0 0% 7%)')};
        border-right: 1px solid ${cssManager.bdTheme('hsl(0 0% 91%)', 'hsl(0 0% 13%)')};
        font-size: 13px;
        font-family: 'Geist Sans', sans-serif;
        z-index: 2;
        display: grid;
        grid-template-rows: auto 1fr min-content;
        overflow: hidden;
      }

      .sidebar-header {
        padding: 20px 16px;
        border-bottom: 1px solid ${cssManager.bdTheme('hsl(0 0% 91%)', 'hsl(0 0% 13%)')};
        display: flex;
        align-items: center;
        gap: 12px;
      }

      .header-icon-wrapper {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: ${cssManager.bdTheme(
          'linear-gradient(135deg, hsl(215 20% 95%) 0%, hsl(215 20% 90%) 100%)',
          'linear-gradient(135deg, hsl(215 20% 18%) 0%, hsl(215 20% 14%) 100%)'
        )};
        box-shadow: ${cssManager.bdTheme(
          '0 1px 2px rgb(0 0 0 / 0.05), inset 0 1px 0 rgb(255 255 255 / 0.5)',
          '0 1px 2px rgb(0 0 0 / 0.2), inset 0 1px 0 rgb(255 255 255 / 0.05)'
        )};
      }

      .header-icon-wrapper dees-icon {
        font-size: 18px;
        color: ${cssManager.bdTheme('hsl(215 20% 40%)', 'hsl(215 20% 70%)')};
      }

      .appName {
        font-size: 15px;
        font-weight: 600;
        color: ${cssManager.bdTheme('hsl(0 0% 9%)', 'hsl(0 0% 98%)')};
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        letter-spacing: -0.02em;
      }

      .viewTabs-container {
        overflow-y: auto;
        padding: 12px 8px;
        scrollbar-width: thin;
        scrollbar-color: ${cssManager.bdTheme('hsl(0 0% 85%)', 'hsl(0 0% 20%)')} transparent;
      }

      .viewTabs-container::-webkit-scrollbar {
        width: 6px;
      }

      .viewTabs-container::-webkit-scrollbar-track {
        background: transparent;
      }

      .viewTabs-container::-webkit-scrollbar-thumb {
        background: ${cssManager.bdTheme('hsl(0 0% 85%)', 'hsl(0 0% 20%)')};
        border-radius: 3px;
      }

      .viewTabs-container::-webkit-scrollbar-thumb:hover {
        background: ${cssManager.bdTheme('hsl(0 0% 75%)', 'hsl(0 0% 30%)')};
      }

      .section-label {
        font-size: 11px;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: ${cssManager.bdTheme('hsl(0 0% 50%)', 'hsl(0 0% 50%)')};
        padding: 8px 12px 8px;
        margin-bottom: 4px;
      }

      .viewTabs {
        display: flex;
        flex-direction: column;
        gap: 2px;
      }

      .viewTab {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        cursor: default;
        transition: all 0.15s ease;
        color: ${cssManager.bdTheme('hsl(0 0% 40%)', 'hsl(0 0% 65%)')};
        user-select: none;
        position: relative;
        border-radius: 8px;
      }

      .viewTab:hover {
        background: ${cssManager.bdTheme('hsl(0 0% 0% / 0.04)', 'hsl(0 0% 100% / 0.05)')};
        color: ${cssManager.bdTheme('hsl(0 0% 15%)', 'hsl(0 0% 90%)')};
      }

      .viewTab:active {
        background: ${cssManager.bdTheme('hsl(0 0% 0% / 0.06)', 'hsl(0 0% 100% / 0.07)')};
        transform: scale(0.99);
      }

      .viewTab.selected {
        background: ${cssManager.bdTheme('hsl(215 25% 95%)', 'hsl(215 20% 15%)')};
        color: ${cssManager.bdTheme('hsl(215 25% 30%)', 'hsl(215 25% 85%)')};
        font-weight: 500;
      }

      .viewTab.selected::before {
        content: '';
        position: absolute;
        left: 0;
        top: 8px;
        bottom: 8px;
        width: 3px;
        border-radius: 0 2px 2px 0;
        background: ${cssManager.bdTheme('hsl(215 70% 50%)', 'hsl(215 70% 60%)')};
      }

      .viewTab dees-icon {
        font-size: 16px;
        opacity: 0.55;
        transition: all 0.15s ease;
      }

      .viewTab:hover dees-icon {
        opacity: 0.75;
      }

      .viewTab.selected dees-icon {
        opacity: 0.9;
        color: ${cssManager.bdTheme('hsl(215 70% 45%)', 'hsl(215 70% 65%)')};
      }

      .viewTab span {
        flex: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      .appActions {
        padding: 12px 8px;
        border-top: 1px solid ${cssManager.bdTheme('hsl(0 0% 91%)', 'hsl(0 0% 13%)')};
      }

      .action {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        border-radius: 8px;
        cursor: default;
        transition: all 0.15s ease;
        color: ${cssManager.bdTheme('hsl(0 0% 40%)', 'hsl(0 0% 65%)')};
      }

      .action:hover {
        background: ${cssManager.bdTheme('hsl(0 84% 60% / 0.08)', 'hsl(0 84% 60% / 0.12)')};
        color: ${cssManager.bdTheme('hsl(0 84% 45%)', 'hsl(0 84% 65%)')};
      }

      .action dees-icon {
        font-size: 16px;
        opacity: 0.6;
        transition: all 0.15s ease;
      }

      .action:hover dees-icon {
        opacity: 0.9;
        color: ${cssManager.bdTheme('hsl(0 84% 45%)', 'hsl(0 84% 65%)')};
      }

      .appcontent {
        z-index: 1;
        position: absolute;
        top: 0px;
        right: 0px;
        height: calc(100% - 24px);
        bottom: 24px;
        width: calc(100% - 240px);
        overflow: auto;
        background: ${cssManager.bdTheme('hsl(0 0% 97%)', 'hsl(0 0% 5%)')};
        overscroll-behavior: contain;
      }

      .controlbar {
        color: #fff;
        position: absolute;
        bottom: 0px;
        left: 0px;
        width: 100%;
        height: 24px;
        background: ${cssManager.bdTheme('hsl(220 13% 18%)', 'hsl(220 13% 12%)')};
        z-index: 2;
        display: flex;
        justify-content: flex-end;
        align-items: center;
        flex-direction: row;
        font-size: 11px;
        font-weight: 500;
        letter-spacing: 0.01em;
      }

      .control {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 0 12px;
        height: 100%;
        white-space: nowrap;
        cursor: default;
        color: hsl(0 0% 70%);
        transition: all 0.15s ease;
        border-left: 1px solid hsl(0 0% 100% / 0.08);
      }

      .control:first-child {
        border-left: none;
      }

      .control:hover {
        background: hsl(0 0% 100% / 0.06);
        color: hsl(0 0% 95%);
      }

      .control dees-icon {
        font-size: 13px;
      }

      .control.status-connected dees-icon {
        color: hsl(142 70% 50%);
      }

      .control.status-terminal dees-icon {
        color: hsl(45 90% 55%);
      }

      /* Global Message Banners */
      .messageBannerArea {
        position: absolute;
        top: 0;
        left: 240px;
        right: 0;
        z-index: 3;
        display: flex;
        flex-direction: column;
        transition: height 0.25s cubic-bezier(0.4, 0, 0.2, 1);
      }

      .messageBanner {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 10px 16px;
        font-size: 13px;
        font-family: 'Geist Sans', sans-serif;
        font-weight: 500;
        border-bottom: 1px solid ${cssManager.bdTheme('hsl(0 0% 91%)', 'hsl(0 0% 13%)')};
        animation: bannerSlideDown 0.25s cubic-bezier(0.4, 0, 0.2, 1) forwards;
      }

      .messageBanner.dismissing {
        animation: bannerSlideUp 0.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
      }

      @keyframes bannerSlideDown {
        from {
          opacity: 0;
          transform: translateY(-100%);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      @keyframes bannerSlideUp {
        from {
          opacity: 1;
          transform: translateY(0);
        }
        to {
          opacity: 0;
          transform: translateY(-100%);
        }
      }

      .messageBanner dees-icon {
        font-size: 16px;
        flex-shrink: 0;
      }

      .messageBanner-text {
        flex: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      .messageBanner-actions {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-shrink: 0;
      }

      .messageBanner-action {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 4px 12px;
        border-radius: 4px;
        cursor: default;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 0.01em;
        transition: all 0.15s ease;
        white-space: nowrap;
        background: ${cssManager.bdTheme('hsl(0 0% 0% / 0.08)', 'hsl(0 0% 100% / 0.1)')};
        color: inherit;
      }

      .messageBanner-action:hover {
        background: ${cssManager.bdTheme('hsl(0 0% 0% / 0.15)', 'hsl(0 0% 100% / 0.18)')};
      }

      .messageBanner-action:active {
        transform: scale(0.97);
      }

      .messageBanner-action dees-icon {
        font-size: 13px;
      }

      .messageBanner-dismiss {
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 24px;
        height: 24px;
        border-radius: 4px;
        cursor: default;
        opacity: 0.5;
        transition: all 0.15s ease;
      }

      .messageBanner-dismiss:hover {
        opacity: 1;
        background: hsl(0 0% 0% / 0.1);
      }

      /* Message type: info */
      .messageBanner-info {
        background: ${cssManager.bdTheme('hsl(210 100% 97%)', 'hsl(210 50% 10%)')};
        color: ${cssManager.bdTheme('hsl(210 70% 30%)', 'hsl(210 70% 80%)')};
        border-left: 3px solid #0084ff;
      }
      .messageBanner-info dees-icon {
        color: #0084ff;
      }

      /* Message type: success */
      .messageBanner-success {
        background: ${cssManager.bdTheme('hsl(142 70% 97%)', 'hsl(142 30% 10%)')};
        color: ${cssManager.bdTheme('hsl(142 50% 25%)', 'hsl(142 50% 80%)')};
        border-left: 3px solid #22c55e;
      }
      .messageBanner-success dees-icon {
        color: #22c55e;
      }

      /* Message type: warning */
      .messageBanner-warning {
        background: ${cssManager.bdTheme('hsl(38 90% 97%)', 'hsl(38 40% 10%)')};
        color: ${cssManager.bdTheme('hsl(38 60% 25%)', 'hsl(38 60% 80%)')};
        border-left: 3px solid #f59e0b;
      }
      .messageBanner-warning dees-icon {
        color: #f59e0b;
      }

      /* Message type: error */
      .messageBanner-error {
        background: ${cssManager.bdTheme('hsl(0 70% 97%)', 'hsl(0 40% 10%)')};
        color: ${cssManager.bdTheme('hsl(0 60% 30%)', 'hsl(0 60% 80%)')};
        border-left: 3px solid #ef4444;
      }
      .messageBanner-error dees-icon {
        color: #ef4444;
      }

      .messageBanner-dismiss:hover {
        background: ${cssManager.bdTheme('hsl(0 0% 0% / 0.08)', 'hsl(0 0% 100% / 0.1)')};
      }

      .appcontent {
        top: var(--banner-area-height, 0px);
        height: calc(100% - 24px - var(--banner-area-height, 0px));
      }
    `,
  ];

  public render(): TemplateResult {
    return html`
      <div class="maincontainer">
        <div class="appbar">
          <div class="sidebar-header">
            <div class="header-icon-wrapper">
              <dees-icon .icon="${'lucide:layoutGrid'}"></dees-icon>
            </div>
            <div class="appName">${this.name}</div>
          </div>
          <div class="viewTabs-container">
            <div class="section-label">Navigation</div>
            <div class="viewTabs">
              ${this.viewTabs.map(
                (view) => html`
                  <div
                    class="viewTab ${this.selectedView === view ? 'selected' : ''}"
                    @click=${() => this.loadView(view)}
                  >
                    ${view.iconName ? html`
                      <dees-icon .icon="${view.iconName.includes(':') ? view.iconName : `lucide:${view.iconName}`}"></dees-icon>
                    ` : html`
                      <dees-icon .icon="${'lucide:file'}"></dees-icon>
                    `}
                    <span>${view.name}</span>
                  </div>
                `
              )}
            </div>
          </div>
          <div class="appActions">
            <div class="action" @click=${() => {
              this.dispatchEvent(new CustomEvent('logout', { bubbles: true, composed: true }));
            }}>
              <dees-icon .icon="${'lucide:logOut'}"></dees-icon>
              <span>Sign out</span>
            </div>
          </div>
        </div>
        ${this._activeMessages.length > 0 ? html`
        <div class="messageBannerArea">
          ${this._activeMessages.map(msg => html`
            <div
              class="messageBanner messageBanner-${msg.type}"
              data-message-id="${msg.id}"
            >
              <dees-icon .icon="${this.getMessageIcon(msg)}"></dees-icon>
              <span class="messageBanner-text">${msg.message}</span>
              ${msg.actions?.length ? html`
                <div class="messageBanner-actions">
                  ${msg.actions.map(a => html`
                    <div class="messageBanner-action" @click=${() => a.action()}>
                      ${a.iconName ? html`<dees-icon .icon="${a.iconName.includes(':') ? a.iconName : `lucide:${a.iconName}`}"></dees-icon>` : ''}
                      <span>${a.name}</span>
                    </div>
                  `)}
                </div>
              ` : ''}
              ${msg.dismissible !== false ? html`
                <div class="messageBanner-dismiss" @click=${() => this.removeMessage(msg.id)}>
                  <dees-icon .icon="${'lucide:x'}"></dees-icon>
                </div>
              ` : ''}
            </div>
          `)}
        </div>
      ` : ''}
        <div class="appcontent">
          <!-- Content goes here -->
        </div>
        <div class="controlbar">
          <div class="control status-connected">
            <dees-icon .icon="${'lucide:wifi'}"></dees-icon>
            <span>Connected</span>
          </div>
          <div class="control status-terminal" @click=${this.launchTerminal}>
            <dees-icon .icon="${'lucide:terminal'}"></dees-icon>
            <span>Terminal</span>
          </div>
        </div>
      </div>
    `;
  }

  public async firstUpdated(_changedProperties: Map<string | number | symbol, unknown>): Promise<void> {
    const domtools = await this.domtoolsPromise;
    super.firstUpdated(_changedProperties);
    if (this.viewTabs && this.viewTabs.length > 0) {
      const viewToLoad = this.selectedView || this.viewTabs[0];
      await this.loadView(viewToLoad);
    }
  }

  public willUpdate(changedProperties: Map<string, unknown>) {
    if (changedProperties.has('globalMessages')) {
      // Sync globalMessages property into _activeMessages
      // Keep any messages added via addMessage() that aren't in globalMessages
      const propertyIds = new Set(this.globalMessages.map(m => m.id));
      const existingIds = new Set(this._activeMessages.map(m => m.id));

      // Add new messages from property that aren't already active
      const newMessages = this.globalMessages.filter(m => !existingIds.has(m.id));

      // Keep messages added via API (those not in globalMessages are kept as-is)
      // Remove messages that were in the previous globalMessages but are no longer
      const previousGlobalMessages = (changedProperties.get('globalMessages') as IGlobalMessage[]) || [];
      const previousIds = new Set(previousGlobalMessages.map(m => m.id));
      const removedIds = new Set([...previousIds].filter(id => !propertyIds.has(id)));

      this._activeMessages = [
        ...this._activeMessages.filter(m => !removedIds.has(m.id)),
        ...newMessages,
      ];
    }
  }

  public updated(changedProperties: Map<string, unknown>) {
    super.updated(changedProperties);
    this.updateBannerOffset();
  }

  private updateBannerOffset() {
    requestAnimationFrame(() => {
      const bannerArea = this.shadowRoot?.querySelector('.messageBannerArea') as HTMLElement;
      const maincontainer = this.shadowRoot?.querySelector('.maincontainer') as HTMLElement;
      const height = bannerArea ? bannerArea.offsetHeight : 0;
      maincontainer?.style.setProperty('--banner-area-height', `${height}px`);
    });
  }

  private getMessageIcon(msg: IGlobalMessage): string {
    if (msg.icon) return msg.icon;
    const defaults: Record<TGlobalMessageType, string> = {
      info: 'lucide:info',
      success: 'lucide:circleCheck',
      warning: 'lucide:triangleAlert',
      error: 'lucide:circleX',
    };
    return defaults[msg.type];
  }

  public addMessage(message: Omit<IGlobalMessage, 'id'> & { id?: string }): string {
    const id = message.id || `msg-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
    const fullMessage: IGlobalMessage = {
      dismissible: true,
      ...message,
      id,
    };
    this._activeMessages = [...this._activeMessages, fullMessage];
    return id;
  }

  public removeMessage(id: string): void {
    const bannerEl = this.shadowRoot?.querySelector(`[data-message-id="${id}"]`) as HTMLElement;
    if (bannerEl) {
      bannerEl.classList.add('dismissing');
      bannerEl.addEventListener('animationend', () => {
        this._activeMessages = this._activeMessages.filter(m => m.id !== id);
        this.dispatchEvent(new CustomEvent('message-dismiss', {
          detail: { id },
          bubbles: true,
          composed: true,
        }));
      }, { once: true });
    } else {
      this._activeMessages = this._activeMessages.filter(m => m.id !== id);
    }
  }

  public clearMessages(): void {
    this._activeMessages = [];
  }
  
  public currentTerminal: DeesWorkspaceTerminal | null = null;
  public async launchTerminal() {
    const domtools = await this.domtoolsPromise;
    if (this.currentTerminal) {
      // If terminal already exists, remove it
      await this.closeTerminal();
      return;
    }

    const maincontainer = this.shadowRoot!.querySelector('.maincontainer')! as HTMLElement;
    const { DeesWorkspaceTerminal } = await import('../../00group-workspace/dees-workspace-terminal/dees-workspace-terminal.js');
    const terminal = new DeesWorkspaceTerminal();
    terminal.setupCommand = this.terminalSetupCommand;
    this.currentTerminal = terminal;
    maincontainer.appendChild(terminal);
    terminal.style.position = 'absolute';
    terminal.style.zIndex = '10';
    terminal.style.top = 'var(--banner-area-height, 0px)';
    terminal.style.left = '240px';
    terminal.style.right = '0px';
    terminal.style.height = 'auto';
    terminal.style.bottom = '24px';
    terminal.style.opacity = '0';
    terminal.style.transform = 'translateY(8px) scale(0.99)';
    terminal.style.transition = 'all 0.25s cubic-bezier(0.4, 0, 0.2, 1)';
    terminal.style.boxShadow = '0 25px 50px -12px rgb(0 0 0 / 0.5), 0 0 0 1px rgb(255 255 255 / 0.05)';
    
    // Add close button to terminal
    terminal.addEventListener('close', () => this.closeTerminal());
    
    await domtools.convenience.smartdelay.delayFor(0);
    terminal.style.opacity = '1';
    terminal.style.transform = 'translateY(0) scale(1)';
    return terminal;
  }
  
  private async closeTerminal() {
    const domtools = await this.domtoolsPromise;
    if (this.currentTerminal) {
      this.currentTerminal.style.opacity = '0';
      this.currentTerminal.style.transform = 'translateY(8px) scale(0.99)';
      await domtools.convenience.smartdelay.delayFor(250);
      this.currentTerminal.remove();
      this.currentTerminal = null;
    }
  }


  private currentView!: DeesElement;
  public async loadView(viewArg: IView) {
    const appcontent = this.shadowRoot!.querySelector('.appcontent')!;
    const view = new viewArg.element();
    if (this.currentView) {
      this.currentView.remove();
    }
    appcontent.appendChild(view);
    this.currentView = view;
    this.selectedView = viewArg;
    
    // Emit view-select event
    this.dispatchEvent(new CustomEvent('view-select', {
      detail: { view: viewArg },
      bubbles: true,
      composed: true
    }));
  }
}