import { tsString } from './string'
/**
 * URL处理模块
 */
export module tsUrl {
    /**
     * 获取域名传参，！！！警告：参数名不能带=号，仅支持参数值带=号
     * @param url 带参数的url，默认值：window.location
     * @returns
     */
    export function getQuery(url?: string): Map<string, any> {
        if (!tsString.isNullOrEmpty(url)) {
            if (String(url).indexOf('?') != -1) {
                url = url.split('?')[1]
            }
        } else if (tsString.isNullOrEmpty(url) && window) {
            url = window.location.search.substring(1)
        }
        let m: Map<string, any> = new Map<string, any>()
        if (tsString.isNullOrEmpty(url)) {
            return m
        }
        let query = decodeURI(url)
        if (query.length > 0) {
            let vars = query.split('&')
            for (let val of vars) {
                let index = val.indexOf('=')
                if (index == -1) {
                    continue
                }
                let k = val.substring(0, index)
                let v = val.substring(index + 1, val.length)
                m[k] = v
            }
        }
        return m
    }

    /**
     * 获取指定参数值
     * @param key 参数名
     * @param defaultVal 默认值
     * @param url 带参数的url，默认值：window.location
     * @returns
     */
    export function getQueryValue(key: string, defaultVal?: any, url?: string): any {
        let m = getQuery(url)
        return m[key] || defaultVal
    }

    /**
     * 从url中提取域名
     * @param url 支持：http, https, wss, ws,
     * @returns
     */
    export function getDomain(url: string): string {
        if (tsString.isNullOrEmpty(url)) {
            return ''
        }
        let domain = url.replace('https://', '')
        domain = domain.replace('http://', '')
        domain = domain.replace('wss://', '')
        domain = domain.replace('ws://', '')
        let index = domain.indexOf('/')
        if (index != -1) {
            domain = domain.substring(0, index)
        }
        return domain
    }

    /**
     * 转换url wss->https, ws->http
     * @param url
     * @returns
     */
    export function convertWSToHttp(url: string): string {
        let httpUrl = url.replace('wss://', 'https://')
        httpUrl = httpUrl.replace('ws://', 'http://')
        return httpUrl
    }
}