'use strict';

import React from 'react';
import ReactNative from 'react-native';
import YH_Image from '../../../common/components/YH_Image';
import Immutable from 'immutable';

const {
    TouchableOpacity,
    Dimensions,
} = ReactNative;

export default class ImageSingle extends React.Component {

    constructor(props) {
        super(props);
        this._handleParamsJumpWithUrl = this._handleParamsJumpWithUrl.bind(this);
    }

    shouldComponentUpdate(nextProps) {
        if (Immutable.is(nextProps.resource, this.props.resource)) {
            return false;
        } else {
            return true;
        }
    }

    _handleParamsJumpWithUrl(id, name, url) {
        // 为埋点提供参数组装 
        // 后期请将所有的点击事件由 resourceJumpWithUrl 修改为自己独有的事件
        // 由于多数组件都使用的 resourceJumpWithUrl ，埋点传参无法正常进行
        let params = {
          F_ID: id,
          F_NAME: name,
          F_URL: url
        };
        if (this.props.messageResourceInfo) {
            params = {
                ID: id,
            };
        }
        this.props.resourceJumpWithUrl && this.props.resourceJumpWithUrl(url, 'one', params);
    }

    render() {

        let {resource} = this.props;
        if (!resource || resource.size === 0) {
            return null;
        }
            let data = resource.toJS();
            let list = data && data.list;
            if (!list || list.length === 0) {
                return null;
            }

        let sliderWidth = this.props.style && this.props.style.width  ? this.props.style.width : width;
        let ratio = data.imageWidth / width;
        let sliderHeight = data.imageHeight / ratio;
        let imageUrl = YH_Image.getSlicedUrl(list[0].src, sliderWidth, sliderHeight, 2);
        return (
            <TouchableOpacity
                activeOpacity={1}
                yh_exposureData={list[0].yh_exposureData}
                style={[{width: sliderWidth, height: sliderHeight},this.props.style]}
                onPress={() => {
                    this._handleParamsJumpWithUrl(resource.get('template_id'), resource.get('template_name'), list[0].url);
                }}
            >
                <YH_Image
                    url={imageUrl}
                    style={{width: sliderWidth, height: sliderHeight}}
                />
            </TouchableOpacity>
        );
    }
}

let {width} = Dimensions.get('window');