// ==UserScript==
// @name         移除csdn
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  自动从google搜索结果中移除csdn
// @author       zhyl
// @grant        none
// @run-at       document-start

// @include https://www.google.*/*
// @downloadURL none
// ==/UserScript==

(function() {
    let url = new URL(location.href)
    let searchParams = url.searchParams
    let it = searchParams.keys()

    let search = '?'

    let result = it.next()
    let removeFlag = false

    while(!result.done) {
        let key = result.value, value = searchParams.get(key)
        if (value.indexOf('-csdn') === -1 && (key === 'q' || key === 'oq')) {
            value += ' -csdn'
            removeFlag = true
        }
        search += `${key}=${value}&`
        result = it.next()
    }
    if (removeFlag) {
        search = search.substr(0, search.length - 1)
        location.search = search
    }

    window.onload = () => {
        let searchInput = document.getElementsByClassName('gLFyf')[0]
        searchInput.value = searchInput.value.replace('-csdn', '').trim()
    }
})()