import {
  customElement,
  type TemplateResult,
  html,
  property,
  css,
  cssManager,
} from '@design.estate/dees-element';
import { DeesInputBase } from './dees-input-base.js';

import * as colors from './00colors.js'

const { demoFunc } = await import('./dees-input-multitoggle.demo.js');

declare global {
  interface HTMLElementTagNameMap {
    'dees-input-multitoggle': DeesInputMultitoggle;
  }
}

@customElement('dees-input-multitoggle')
export class DeesInputMultitoggle extends DeesInputBase<DeesInputMultitoggle> {
  public static demo = demoFunc;


  @property()
  type: 'boolean' | 'multi' | 'single' = 'multi';

  @property()
  booleanTrueName: string = 'true';

  @property()
  booleanFalseName: string = 'false';

  @property({
    type: Array,
  })
  options: string[] = [];

  @property()
  selectedOption: string = '';

  @property({ type: Boolean })
  boolValue: boolean = false;

  // Add value property for form compatibility
  public get value(): string | boolean {
    if (this.type === 'boolean') {
      return this.selectedOption === this.booleanTrueName;
    }
    return this.selectedOption;
  }

  public set value(val: string | boolean) {
    if (this.type === 'boolean' && typeof val === 'boolean') {
      this.selectedOption = val ? this.booleanTrueName : this.booleanFalseName;
    } else {
      this.selectedOption = val as string;
    }
    // Defer indicator update to next frame if component not yet updated
    if (this.hasUpdated) {
      this.setIndicator();
    }
  }

  public static styles = [
    ...DeesInputBase.baseStyles,
    cssManager.defaultStyles,
    css`
      :host {
        color: ${cssManager.bdTheme('#333', '#ccc')};
        user-select: none;
      }


      .selections {
        position: relative;
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        background: ${cssManager.bdTheme('#fff', '#222')};
        width: min-content;
        border-radius: 20px;
        height: 32px;
        border-top: 1px solid ${cssManager.bdTheme('rgba(0,0,0,0.1)', 'rgba(255,255,255,0.1)')};
      }

      .option {
        color: ${cssManager.bdTheme('#666', '#999')};
        position: relative;
        padding: 0px 16px;
        line-height: 32px;
        cursor: default;
        width: min-content; /* Make the width as per the content */
        white-space: nowrap; /* Prevent text wrapping */
        transition: all 0.1s;
        font-size: 14px;
        transform: translateY(-1px);
      }

      .option:hover {
        color: ${cssManager.bdTheme('#333', '#fff')};
      }

      .option.selected {
        color: ${cssManager.bdTheme('#fff', '#fff')};
      }

      .indicator {
        opacity: 0;
        position: absolute;
        height: 24px;
        left: 4px;
        top: 3px;
        border-radius: 16px;
        background: ${cssManager.bdTheme(colors.bright.blueActive, colors.dark.blueActive)};
        min-width: 24px;
        transition: all 0.1s ease-in-out;
      }
      
      .indicator.no-transition {
        transition: none;
      }
    `,
  ];

  public render(): TemplateResult {
    return html`
      <div class="input-wrapper">
        <dees-label .label=${this.label} .description=${this.description}></dees-label>
        <div class="mainbox">
          <div class="selections">
          <div class="indicator"></div>
          ${this.options.map(
            (option) =>
              html`<div class="option ${option === this.selectedOption ? 'selected': ''}" @click=${() => this.handleSelection(option)}>
                ${option}
              </div> `
          )}
          </div>
        </div>
      </div>
    `;
  }

  public async connectedCallback() {
    await super.connectedCallback();
    // Initialize boolean options early
    if (this.type === 'boolean' && this.options.length === 0) {
      this.options = [this.booleanTrueName || 'true', this.booleanFalseName || 'false'];
    }
  }

  public async firstUpdated(_changedProperties: Map<string | number | symbol, unknown>) {
    super.firstUpdated(_changedProperties);
    // Update boolean options if they changed
    if (this.type === 'boolean') {
      this.options = [this.booleanTrueName || 'true', this.booleanFalseName || 'false'];
    }
    // Wait for the next frame to ensure DOM is fully rendered
    await this.updateComplete;
    requestAnimationFrame(() => {
      this.setIndicator();
    });
  }

  public async handleSelection(optionArg: string) {
    this.selectedOption = optionArg;
    this.setIndicator();
  }

  private indicatorInitialized = false;

  public async setIndicator() {
    const indicator: HTMLDivElement = this.shadowRoot.querySelector('.indicator');
    const selectedIndex = this.options.indexOf(this.selectedOption);
    
    // If no valid selection, hide indicator
    if (selectedIndex === -1 || !indicator) {
      if (indicator) {
        indicator.style.opacity = '0';
      }
      return;
    }
    
    const option: HTMLDivElement = this.shadowRoot.querySelector(
      `.option:nth-child(${selectedIndex + 2})`
    );
    
    if (indicator && option) {
      // Only disable transition for the very first positioning
      if (!this.indicatorInitialized) {
        indicator.classList.add('no-transition');
        this.indicatorInitialized = true;
        
        // Remove the no-transition class after a brief delay
        setTimeout(() => {
          indicator.classList.remove('no-transition');
        }, 50);
      }
      
      indicator.style.width = `${option.clientWidth - 8}px`;
      indicator.style.left = `${option.offsetLeft + 4}px`;
      indicator.style.opacity = '1';
    }
  }

  public getValue(): string | boolean {
    if (this.type === 'boolean') {
      return this.selectedOption === this.booleanTrueName;
    }
    return this.selectedOption;
  }

  public setValue(value: string | boolean): void {
    if (this.type === 'boolean' && typeof value === 'boolean') {
      this.selectedOption = value ? (this.booleanTrueName || 'true') : (this.booleanFalseName || 'false');
    } else {
      this.selectedOption = value as string;
    }
    if (this.hasUpdated) {
      this.setIndicator();
    }
  }
}