import * as shared from './shared.js';

import { LitElement, html, css, type TemplateResult } from 'lit';
import { customElement } from 'lit/decorators.js';
import { property } from 'lit/decorators/property.js';

import * as csInterfaces from '@consent.software/interfaces';
import * as csWebclient from '@consent.software/webclient';
import { delayFor } from '@push.rocks/smartdelay';

declare global {
  interface HTMLElementTagNameMap {
    'consentsoftware-cookieconsent': ConsentsoftwareCookieconsent;
  }
}

@customElement('consentsoftware-cookieconsent')
export class ConsentsoftwareCookieconsent extends LitElement {
  public static demo = () => html`<consentsoftware-cookieconsent></consentsoftware-cookieconsent>`;

  public csWebclientInstance = new csWebclient.CsWebclient();
  public csWebclientRan = false;

  @property({ type: String, reflect: true })
  public theme: 'light' | 'dark' = 'light';

  /**
   * We bind `heightPixels` to a CSS variable (--cookieconsent-height).
   * Then we can do margin-bottom animations in CSS.
   */
  public static styles = css`
    :host {
      font-family: ${shared.fontStack};
      user-select: none;
      /* Default theme variables */
      --text-color: #333;
      --background-color: #eeeeee;
      --accent-color: #333333;
      --button-bg: #ffffff;
      --button-hover-bg: #f2f2f2;
      --icon-color: #4496f5;
      --link-color: #333;
      --padding-sides: 16px;
    }

    :host([theme='dark']) {
      --text-color: #fff;
      --background-color: #111;
      --accent-color: #333333;
      --button-bg: #252525;
      --button-hover-bg: #222222;
      --icon-color: #4496f5;
      --link-color: #fff;
    }

    :host([theme='light']) {
      --text-color: #333;
      --background-color: #eeeeee;
      --accent-color: #333333;
      --button-bg: #ffffff;
      --button-hover-bg: #f2f2f2;
      --icon-color: #4496f5;
      --link-color: #333;
    }

    .pageOverlay {
      position: fixed;
      top: 0px;
      bottom: 0px;
      right: 0px;
      left: 0px;
      display: grid;
      align-items: center;
      justify-content: center;
      z-index: 1000; /* standard z-index for fixed elements */
      background: rgba(255, 255, 255, 0);
      backdrop-filter: blur(0px);
      transition: all 0.2s;
    }

    .modalBox {
      display: block;
      color: var(--text-color);
      background: var(--background-color);
      box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.6);
      position: realtive;
      border: 1px dotted rgba(255, 255, 255, 0.1);
      border-top: 1px solid var(--accent-color);
      border-radius: 16px;
      max-width: 1100px;
      min-width: calc(100vw / 3);
      box-sizing: border-box;
      overflow: hidden;
      will-change: transform; /* ensure efficient rendering */
      transition: all 0.3s;
      transform: scale(0.95);
      opacity: 0;
    }

    /* 
     * Toggle display based on [show] attribute 
     * (so if show=false, the banner doesn't show at all).
     */
    :host([show='false']) {
      display: none;
    }
    :host([show='true']) {
      display: block;
    }

    .content {
      margin: auto;
    }

    .text-container {
      padding-left: var(--padding-sides);
      padding-right: var(--padding-sides);
      display: grid;
      grid-template-columns: auto;
    }

    .text-container a {
      color: var(--link-color);
      text-decoration: none;
    }

    .button-container {
      padding: var(--padding-sides);
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .info-container {
      color: var(--text-color);
      text-align: center;
      line-height: 3em;
      background: rgba(0, 0, 0, 0.1);
      border-top: 1px dotted rgba(255, 255, 255, 0.1);
      font-size: 0.8em;
      color: rgba(255, 255, 255, 0.5);
    }

    .info-container a {
      text-decoration: underline;
      color: var(--link-color);
      transition: color 0.2s;
    }
    .info-container a:hover {
      color: #ffffff;
    }

    .consent-button {
      border-radius: 3px;
      background: var(--button-bg);
      box-shadow: 0px 0px 5px rgba(0, 0, 0, 0.2);
      padding: 10px;
      line-height: 30px;
      text-align: center;
      cursor: pointer;
      transition: all 0.2s;
    }

    .consent-button:hover {
      background: var(--button-hover-bg);
    }
  `;

  constructor() {
    super();
    this.setAttribute('show', 'false');
  }

  public render(): TemplateResult {
    return html`
      <div class="pageOverlay">
        <div class="modalBox">
          <div class="content">
            <consentsoftware-header></consentsoftware-header>
            <consentsoftware-tabs></consentsoftware-tabs>
            <div class="text-container" style="padding: 16px;">
              <div class="toptext">
                This page uses cookies. Please review our
                <a href="https://lossless.gmbh/cookie" target="_blank">cookie policy</a>
                and choose which cookie level you are willing to accept.
              </div>
            </div>
            <!-- <div class="button-container">
              <div
                class="consent-button"
                @click=${(event: MouseEvent) =>
              this.handleConsentButtonClick(event, ['functional'])}
              >
                Functional cookies
              </div>
              <div
                class="consent-button"
                @click=${(event: MouseEvent) =>
              this.handleConsentButtonClick(event, ['functional', 'analytics'])}
              >
                Analytics cookies
              </div>
              <div
                class="consent-button"
                @click=${(event: MouseEvent) =>
              this.handleConsentButtonClick(event, ['functional', 'analytics', 'marketing'])}
              >
                Marketing cookies
              </div>
              <div
                class="consent-button"
                @click=${(event: MouseEvent) =>
              this.handleConsentButtonClick(event, ['functional', 'analytics', 'marketing', 'all'])}
              >
                All cookies
              </div>
            </div> -->
            <consentsoftware-mainselection></consentsoftware-mainselection>
            <div class="button-container">
              <div
                class="consent-button"
                @click=${(event: MouseEvent) =>
                  this.handleConsentButtonClick(event, ['functional'])}
              >
                Deny
              </div>
              <div
                class="consent-button"
                @click=${(event: MouseEvent) =>
                  this.handleConsentButtonClick(event, ['functional', 'analytics'])}
              >
                Accept selection
              </div>
              <div
                class="consent-button"
                @click=${(event: MouseEvent) =>
                  this.handleConsentButtonClick(event, ['functional', 'analytics', 'marketing'])}
              >
                Accept all cookies
              </div>
            </div>
            <div class="info-container">
              consent management powered by
              <a href="https://consent.software">consent.software</a>
              (Open Source)
            </div>
          </div>
        </div>
      </div>
    `;
  }

  /**
   * Called when the element is inserted into the DOM.
   */
  public async connectedCallback() {
    super.connectedCallback();
    this.updateTheme();

    const cookieLevel = await this.csWebclientInstance.getCookieLevels();
    if (!cookieLevel) {
      this.setAttribute('show', 'true');
      requestAnimationFrame(async () => {
        await this.updated();
        const pageOverlay: HTMLDivElement = this.shadowRoot?.querySelector('.pageOverlay');
        if (pageOverlay) {
          pageOverlay.style.background = 'rgba(255,255,255, 0.1)';
          pageOverlay.style.backdropFilter = 'blur(1px)';
        }
        const modalBox: HTMLDivElement = this.shadowRoot?.querySelector('.modalBox');
        if (modalBox) {
          modalBox.style.transform = `scale(1)`;
          modalBox.style.opacity = '1';
        }
      });
    } else {
      this.setAttribute('show', 'false');
    }
  }

  /**
   * Called after the first render of the component.
   * We measure the actual height of the banner and update the CSS variable.
   */
  public async firstUpdated() {}

  /**
   * Called whenever the element is updated or re-rendered.
   */
  public async updated() {
    console.log(`The height of the cookie banner is ${this.shadowRoot?.host?.clientHeight}px`);
    const acceptedCookieLevels = await this.csWebclientInstance.getCookieLevels();
    if (!this.csWebclientRan && acceptedCookieLevels) {
      this.csWebclientRan = true;
      await this.csWebclientInstance.getAndRunConsentTuples();
    }
  }

  /**
   * Sets the user’s chosen cookie level(s) and hides the banner.
   */
  private async handleConsentButtonClick(
    event: MouseEvent,
    levelsArg: csInterfaces.TCookieLevel[]
  ) {
    console.log(`Set level to ${levelsArg}`);
    const pageOverlay: HTMLDivElement = this.shadowRoot?.querySelector('.pageOverlay');
    if (pageOverlay) {
      pageOverlay.style.background = 'rgba(255,255,255, 0)';
      pageOverlay.style.backdropFilter = 'blur(0px)';
    }
    const modalBox: HTMLDivElement = this.shadowRoot?.querySelector('.modalBox');
    if (modalBox) {
      modalBox.style.transform = `scale(0.95)`;
      modalBox.style.opacity = '0';
    }
    await this.csWebclientInstance.setCookieLevels(levelsArg);
    await delayFor(300);
    this.setAttribute('show', 'false');
    // After user selection, re-check for any required scripts to run
    this.updated();
  }

  /**
   * Dynamically switches the theme between light/dark,
   * respecting `prefers-color-scheme` by default.
   */
  private updateTheme() {
    const prefersDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
    this.theme = prefersDark ? 'dark' : 'light';
    window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', (e) => {
      this.theme = e.matches ? 'dark' : 'light';
    });
  }
}