/**
 * Pilot
 * @author Tevin
 */

import { Fetcher } from './Fetcher';
import { Tools } from '@components/common/Tools';
import project from '@project';

export class Pilot {

    constructor() {
    }

    $data() {
        return {};
    }

    createOptions(dataAdd) {
        const options = {
            methods: {},
        };
        const names = [];
        // 实例本身的字段
        Object.getOwnPropertyNames(this).forEach(name => names.push(name));
        // 类的字段
        Object.getOwnPropertyNames(Object.getPrototypeOf(this)).forEach(name => names.push(name));
        // 传递
        names.forEach(name => {
            // 构造器忽略，如果存在属性 $methods 也忽略
            if (name === 'constructor' || name === '$methods') {
                return;
            }
            if (/^\$/.test(name)) {
                if (name === '$data' && typeof dataAdd !== 'undefined') {
                    // 转换 dataAdd 中 assets 属性下的图片地址值
                    if (typeof dataAdd.assets !== 'undefined') {
                        dataAdd.assets = Pilot.transAssets(dataAdd.assets);
                    }
                    options.data = () => {
                        // 当有传data值进来，初始值必须带data中的字段
                        const dataOrig = this.$data();
                        return {
                            ...dataOrig,
                            ...dataAdd,
                        };
                    };
                } else {
                    options[name.replace('$', '')] = this[name];
                }
            } else {
                options.methods[name] = this[name];
            }
        });
        return options;
    }

    /**
     * 转换静态图片引用
     * @param assets
     * @return {{}}
     */
    static transAssets(assets = {}) {
        const assets2 = {};
        Object.keys(assets).forEach(key => {
            let asset = '';
            if (assets[key].indexOf('assets') >= 0) {
                asset = assets[key].split('assets')[1];
            } else {
                asset = assets[key].replace(/^[.\/\\]*/, '/');
            }
            // 网页
            if (process.env.TARO_ENV === 'h5') {
                assets2[key] = project.host.assetsPath + asset;
            }
            // 小程序
            else if (process.env.TARO_ENV === 'weapp') {
                assets2[key] = Fetcher.host + project.host.assetsPath + asset;
            }
        });
        return assets2;
    }

}