import {BasicCustomerInstance, CustomerParams} from '../Controller';
import {stringify} from 'querystring';
import {compileExpressionString, isExpression} from '../../../util/vm';
import * as _ from 'lodash';
import {parseExpressString} from '../../../parser/index';

export interface PassCustomerExecConfig {
    /**
     * 跳转的地址
     */
    href: string;

    /**
     * 跳转带的参数
     */
    params?: Object | string;
}

export class LocationCustomer implements BasicCustomerInstance {
    async exec(config: PassCustomerExecConfig, customParams: CustomerParams) {
        let {
            runTime
        } = customParams;
        let targetHref = config.href;
        let locationParams = config.params;

        if (!targetHref) {
            console.error('targetHref is necessary for location jumping');
        } else if (typeof targetHref === 'string' && isExpression(targetHref)) {
            targetHref = parseExpressString(targetHref, runTime);
        }

        if (locationParams) {
            if (typeof locationParams === 'string' && isExpression(locationParams)) {
                locationParams = parseExpressString(locationParams, runTime);
            }

            if (_.isPlainObject(locationParams)) {
                locationParams = compileExpressionString(locationParams, runTime);
            }

            locationParams = (targetHref.indexOf('?') === -1 ? '?' : '&') + stringify(locationParams);

        } else {
            locationParams = '';
        }

        location.href = targetHref + locationParams;
    }
}