import React from 'react';

export default class Gallery extends React.Component {
  onPrevClick (e) {
    this.props.dispatch({type: 'PREV_IMAGE'});
  }

  onNextClick (e) {
    this.props.dispatch({type: 'NEXT_IMAGE'});
  }

  onImageDotClick (index, e) {
    this.props.dispatch({type: 'VIEW_IMAGE', action: {index}})
  }

  render() {
    const {images, imageIndex} = this.props;
    if (!images || images.length === 0) {
      return null;
    }

    const showPrev = imageIndex > 0;
    const showNext = imageIndex < images.length - 1;

    return (
      <div className="ld-image-container">
        <img src={images[imageIndex]}></img>
        {showPrev ?
          <div
            className='prev-button'
            onClick={this.onPrevClick.bind(this)}>
            <div>
              <svg fill="white" version="1.1" x="0px" y="0px" width="100%" height="100%" viewBox="0 0 512 512">
                <path d="M213.7,256L213.7,256L213.7,256L380.9,81.9c4.2-4.3,4.1-11.4-0.2-15.8l-29.9-30.6c-4.3-4.4-11.3-4.5-15.5-0.2L131.1,247.9 c-2.2,2.2-3.2,5.2-3,8.1c-0.1,3,0.9,5.9,3,8.1l204.2,212.7c4.2,4.3,11.2,4.2,15.5-0.2l29.9-30.6c4.3-4.4,4.4-11.5,0.2-15.8 L213.7,256z"></path>
              </svg>
            </div>


          </div>
          : null}
          {showNext ?
            <div
              className='next-button'
              onClick={this.onNextClick.bind(this)}>
              <div>
                <svg fill="white" version="1.1" x="0px" y="0px" width="100%" height="100%" viewBox="0 0 512 512">
                  <path d="M298.3,256L298.3,256L298.3,256L131.1,81.9c-4.2-4.3-4.1-11.4,0.2-15.8l29.9-30.6c4.3-4.4,11.3-4.5,15.5-0.2l204.2,212.7 c2.2,2.2,3.2,5.2,3,8.1c0.1,3-0.9,5.9-3,8.1L176.7,476.8c-4.2,4.3-11.2,4.2-15.5-0.2L131.3,446c-4.3-4.4-4.4-11.5-0.2-15.8 L298.3,256z"></path>
                </svg>
              </div>
              </div>
            : null}
            <div className="image-dots">
              {images.map((img, index) => {
                let cls = 'image-dot'
                if (index === imageIndex) {
                  cls += ' selected'
                }

                return <div onClick={this.onImageDotClick.bind(this, index)} className={cls}></div>
              })}
            </div>
      </div>)
  }
}