export interface DonateLink {
  url: string;
  label: string;
}
export interface ComponentLabels {
  open: string;
  close: string;
  expand?: string;
  label?: string;
}

import {Component, Element, Prop, State, h, Listen} from '@stencil/core';
import ResizeObserver from 'resize-observer-polyfill';
import {SiteLogoSize, SiteLogoColor} from '../../utils/utils';

@Component({
  tag: 'hy-site-header',
  styleUrl: 'site-header.scss',
  shadow: true
})
export class SiteHeader {
  @Element() el: HTMLElement;
  @State() isMobile: boolean;
  @State() isMenuOpen: boolean = false;
  @Prop() dataMenuLanguage: string;
  @Prop() dataMenuDonate: string;
  @Prop() dataSiteHeaderLabels: string;
  @Prop() logoUrl?: string;
  @Prop() logoLabel?: string;
  @Prop({reflect: true}) menuType: string;
  private ro: ResizeObserver;
  private donateLink: DonateLink[];
  private menuLabels: ComponentLabels[];
  private searchLabels: ComponentLabels[];
  private languageLabels: ComponentLabels[];

  @Listen('mobileMenuToggle') mobileMenuToggle() {
    this.isMenuOpen = !this.isMenuOpen;
  }

  componentDidLoad() {
    this.ro = new ResizeObserver((entries) => {
      for (const entry of entries) {
        this.applySizeClasses(entry.contentRect.width);
      }
    });
    this.ro.observe(document.body);
    this.el.children[0].setAttribute('data-menu-language', this.dataMenuLanguage);
  }

  componentWillLoad() {
    const labels = JSON.parse(this.dataSiteHeaderLabels);
    this.menuLabels = labels.menu_labels;
    this.languageLabels = labels.language_labels;
    this.searchLabels = labels.search_labels;
    this.donateLink = JSON.parse(this.dataMenuDonate);
  }

  componentWillUpdate() {
    this.el.children[0].setAttribute('open', this.isMenuOpen.toString());
    this.el.children[0].setAttribute('logo-label', this.logoLabel);
    this.el.children[0].setAttribute('logo-url', this.logoUrl);
    this.el.children[0].setAttribute('menu-button-submenu-expand', this.menuLabels['expand']);
    this.el.children[0].setAttribute('menu-language-label-open', this.languageLabels['open']);
    this.el.children[0].setAttribute('menu-language-label-close', this.languageLabels['close']);
  }

  componentDidUnload() {
    this.ro.disconnect();
  }

  applySizeClasses(size: number) {
    if (size < 768) {
      this.el.children[0].setAttribute('menu-type', 'mobile');
      this.menuType = 'mobile';
      this.isMobile = true;
    } else {
      this.el.children[0].setAttribute('menu-type', 'desktop');
      this.menuType = 'desktop';
      this.isMobile = false;
    }
  }

  render() {
    const black = 'var(--brand-main-nearly-black)';
    const white = 'var(--grayscale-white)';
    const logoSize = this.isMobile ? SiteLogoSize.small : SiteLogoSize.big;
    const logoColor = this.isMobile ? SiteLogoColor.white : SiteLogoColor.black;

    let classAttributes = ['hy-site-header', 'hy-site-header--' + this.menuType];
    return this.isMobile ? (
      // Mobile
      <header class={classAttributes.join(' ')}>
        <div class={{'hy-backdrop': true, 'is-active': this.isMenuOpen}} />
        <div class={'hy-site-header__logo-container'}>
          <hy-site-logo size={logoSize} color={logoColor} url={this.logoUrl} label={this.logoLabel} />
        </div>
        <div class={'hy-site-header__menu-container'}>
          <hy-site-search
            is-alternative={this.isMenuOpen}
            color={this.isMenuOpen ? black : white}
            size={20}
            labels={this.searchLabels}
          />
          <button
            onClick={() => this.mobileMenuToggle()}
            class={{
              'hy-site-header__panel-toggle': true,
              'is-open': this.isMenuOpen
            }}
            aria-label={this.isMenuOpen ? this.menuLabels['close'] : this.menuLabels['open']}
          >
            {this.isMenuOpen ? (
              <hy-icon icon={'hy-icon-remove'} size={20} fill={black} />
            ) : (
              <hy-icon icon={'hy-icon-hamburger'} size={20} fill={white} />
            )}
          </button>
          <div
            class={{
              'is-open': this.isMenuOpen,
              'hy-site-header__panel': true
            }}
          >
            <slot name={'menu'} />
          </div>
        </div>
      </header>
    ) : (
      // Desktop
      <header class={classAttributes.join(' ')}>
        <div class={'hy-site-header__logo-container'}>
          <hy-site-logo size={logoSize} color={logoColor} url={this.logoUrl} label={this.logoLabel} />
        </div>
        <slot name={'menu'} />
        <div class={'menu--secondary'}>
          <hy-menu-language
            class={'menu--secondary__item is-first'}
            is-mobile={false}
            data-menu-language={this.dataMenuLanguage}
            labels={this.languageLabels}
          />
          <hy-site-search
            class={'menu--secondary__item'}
            size={14}
            color={black}
            show-label={true}
            labels={this.searchLabels}
          />
          {this.donateLink.map((i) => {
            return (
              <a class={'menu--secondary__item hy-link__donate'} href={i.url}>
                <hy-icon icon={'hy-icon-euro'} size={14} fill={black} />
                <span class={'hy-link__donate__label'}>{i.label}</span>
              </a>
            );
          })}
        </div>
      </header>
    );
  }
}