import { IPlugin } from '../../intf/IPlugin'
import { AxiosInstance, AxiosRequestConfig } from 'axios'
import { IData } from '../../intf/IData'

const filter = (data: IData, filterEmptyString?: boolean) => {
    for (const key in data) {
        if (data[key] === null || data[key] === undefined) {
            delete data[key]
        }
        if (filterEmptyString && data[key] === '') {
            delete data[key]
        }
    }
}

/** 过滤空参数
 * @param {boolean} filterEmptyString 是否过滤空字符串
 */
export const filterNullValue = (filterEmptyString?: boolean): IPlugin => {
    return {
        pluginName: 'filter-null-value',
        handler: (axios: AxiosInstance) => {
            axios.interceptors.request.use((req: AxiosRequestConfig) => {
                if (typeof req.data === 'object') {
                    filter(req.data, filterEmptyString)
                }
                if (req.params === 'object') {
                    filter(req.params, filterEmptyString)
                }
                return req
            })
        }
    }
}