import {h} from 'preact';
import MaterialComponent from '../MaterialComponent';
import Icon from '../Icon';

const notEmptyString = val => val !== '';

/**
 * @prop tile-gutter-1 {boolean} - use 1px gutter (default is 4px)
 * @prop header-caption {boolean} - position <GridList.SecondaryTile> at top
 * @prop twoline-caption {boolean} - add spacing to <GridList.SecondaryTile> for <GridList.SupportTextTile>
 * @prop with-icon-align {"start"|"end"} - position <GridList.IconTile> at beginning or end of <GridList.SecondaryTile>
 * @prop tile-aspect {"1x1"|"16x9"|"2x3"|"3x2"|"4x3"|"3x4"} - aspect ratio for <GridList.PrimaryTile>
 */
class GridList extends MaterialComponent {
  get validationValuesByKey() {
    return {
      'with-icon-align': ['start', 'end'],
      'tile-aspect': ['1x1', '16x9', '2x3', '3x2', '4x3', '3x4']
    };
  }

  isValidValue(validationValues, testValue) {
    return (
      validationValues &&
      validationValues.findIndex(val => val === testValue) >= 0
    );
  }

  constructor() {
    super();
    this.componentName = 'grid-list';
    this._mdcProps = ['header-caption', 'twoline-caption', 'tile-gutter-1'];
  }
  mapClassName(propKey, props) {
    const propValue = props[propKey];
    const validationValues = this.validationValuesByKey[propKey];

    return this.isValidValue(validationValues, propValue)
      ? `mdc-${this.componentName}--${propKey}-${propValue}`
      : '';
  }
  materialDom(props) {
    const className = Object.keys(this.validationValuesByKey)
      .map(key => {
        return this.mapClassName(key, props);
      })
      .filter(notEmptyString)
      .join(' ');

    return (
      <div {...props} className={className}>
        {props.children}
      </div>
    );
  }
}

class GridListTiles extends MaterialComponent {
  constructor() {
    super();
    this.componentName = 'grid-list__tiles';
  }
  materialDom(props) {
    return <ul {...props}>{props.children}</ul>;
  }
}

class GridListTile extends MaterialComponent {
  constructor() {
    super();
    this.componentName = 'grid-tile';
  }
  materialDom(props) {
    return <li {...props}>{props.children}</li>;
  }
}

class GridListPrimaryTile extends MaterialComponent {
  constructor() {
    super();
    this.componentName = 'grid-tile__primary';
  }
  materialDom(props) {
    return <div {...props}>{props.children}</div>;
  }
}

class GridListPrimaryContentTile extends MaterialComponent {
  constructor() {
    super();
    this.componentName = 'grid-tile__primary-content';
  }
  materialDom(props) {
    return <img {...props} />;
  }
}

class GridListSecondaryTile extends MaterialComponent {
  constructor() {
    super();
    this.componentName = 'grid-tile__secondary';
  }
  materialDom(props) {
    return <span {...props}>{props.children}</span>;
  }
}

class GridListTitleTile extends MaterialComponent {
  constructor() {
    super();
    this.componentName = 'grid-tile__title';
  }
  materialDom(props) {
    return <span {...props}>{props.children}</span>;
  }
}

class GridListSupportTextTile extends MaterialComponent {
  constructor() {
    super();
    this.componentName = 'grid-tile__support-text';
  }
  materialDom(props) {
    return <span {...props}>{props.children}</span>;
  }
}

class GridListIconTile extends Icon {
  constructor() {
    super();
    this.componentName = 'grid-tile__icon';
  }
}

GridList.Tiles = GridListTiles;
GridList.Tile = GridListTile;
GridList.PrimaryTile = GridListPrimaryTile;
GridList.PrimaryContentTile = GridListPrimaryContentTile;
GridList.SecondaryTile = GridListSecondaryTile;
GridList.TitleTile = GridListTitleTile;
GridList.SupportTextTile = GridListSupportTextTile;
GridList.IconTile = GridListIconTile;

export default GridList;