import {LitElement, html, css} from 'lit';
import {customElement, property} from 'lit/decorators.js';
import {classMap} from 'lit/directives/class-map.js';
import {unsafeHTML} from 'lit/directives/unsafe-html.js';
import {join} from 'lit/directives/join.js';
import '@material/mwc-icon';

import {INinjaAction} from './interfaces/ininja-action.js';

@customElement('ninja-action')
export class NinjaAction extends LitElement {
  static override styles = css`
    :host {
      display: flex;
      width: 100%;
    }
    .ninja-action {
      padding: 0.75em 1em;
      display: flex;
      border-left: 2px solid transparent;
      align-items: center;
      justify-content: start;
      outline: none;
      transition: color 0s ease 0s;
      width: 100%;
    }
    .ninja-action.selected {
      cursor: pointer;
      color: var(--ninja-selected-text-color);
      background-color: var(--ninja-selected-background);
      border-left: 2px solid var(--ninja-accent-color);
      outline: none;
    }
    .ninja-action.selected .ninja-icon {
      color: var(--ninja-selected-text-color);
    }
    .ninja-icon {
      font-size: var(--ninja-icon-size);
      max-width: var(--ninja-icon-size);
      max-height: var(--ninja-icon-size);
      margin-right: 1em;
      color: var(--ninja-icon-color);
      margin-right: 1em;
      position: relative;
    }

    .ninja-title {
      flex-shrink: 0.01;
      margin-right: 0.5em;
      flex-grow: 1;
      font-size: 0.8125em;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .ninja-hotkeys {
      flex-shrink: 0;
      width: min-content;
      display: flex;
    }

    .ninja-hotkeys kbd {
      font-family: inherit;
    }
    .ninja-hotkey {
      background: var(--ninja-secondary-background-color);
      padding: 0.06em 0.25em;
      border-radius: var(--ninja-key-border-radius);
      text-transform: capitalize;
      color: var(--ninja-secondary-text-color);
      font-size: 0.75em;
      font-family: inherit;
    }

    .ninja-hotkey + .ninja-hotkey {
      margin-left: 0.5em;
    }
    .ninja-hotkeys + .ninja-hotkeys {
      margin-left: 1em;
    }
  `;

  @property({type: Object})
  action!: INinjaAction;

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

  /**
   * Display hotkey as separate buttons on UI or as is
   */
  @property({type: Boolean})
  hotKeysJoinedView = true;

  /**
   * Scroll to show element
   */
  ensureInView() {
    requestAnimationFrame(() => this.scrollIntoView({block: 'nearest'}));
  }

  override click() {
    this.dispatchEvent(
      new CustomEvent('actionsSelected', {
        detail: this.action,
        bubbles: true,
        composed: true,
      })
    );
  }

  constructor() {
    super();
    this.addEventListener('click', this.click);
  }

  override updated(changedProperties: Map<string, unknown>) {
    if (changedProperties.has('selected')) {
      if (this.selected) {
        this.ensureInView();
      }
    }
  }

  override render() {
    let icon;
    if (this.action.mdIcon) {
      icon = html`<mwc-icon part="ninja-icon" class="ninja-icon"
        >${this.action.mdIcon}</mwc-icon
      >`;
    } else if (this.action.icon) {
      icon = unsafeHTML(this.action.icon || '');
    }

    // const hotkey = this.action.hotkey
    //   ? html`<div class="ninja-hotkey">${this.action.hotkey}</div>`
    //   : '';
    let hotkey;
    if (this.action.hotkey) {
      if (this.hotKeysJoinedView) {
        hotkey = this.action.hotkey.split(',').map((hotkeys) => {
          const keys = hotkeys.split('+');
          const joinedKeys = html`${join(
            keys.map((key) => html`<kbd>${key}</kbd>`),
            '+'
          )}`;

          return html`<div class="ninja-hotkey ninja-hotkeys">
            ${joinedKeys}
          </div>`;
        });
      } else {
        hotkey = this.action.hotkey.split(',').map((hotkeys) => {
          const keys = hotkeys.split('+');
          const keyElements = keys.map(
            (key) => html`<kbd class="ninja-hotkey">${key}</kbd>`
          );
          return html`<kbd class="ninja-hotkeys">${keyElements}</kbd>`;
        });
      }
    }

    const classes = {
      selected: this.selected,
      'ninja-action': true,
    };

    return html`
      <div
        class="ninja-action"
        part="ninja-action ${this.selected ? 'ninja-selected' : ''}"
        class=${classMap(classes)}
      >
        ${icon}
        <div class="ninja-title">${this.action.title}</div>
        ${hotkey}
      </div>
    `;
  }
}

declare global {
  interface HTMLElementTagNameMap {
    'ninja-action': NinjaAction;
  }
}