// {{documentation}}
/** Change Special:Search to use a radio menu
 *
 *  Description: Change Special:Search to use a radio menu, with the default being
 *               the internal MediaWiki engine
 *  Created by: [[:fr:User:Pmartin]]
 */

if ((mw.config.get("wgNamespaceNumber") == -1) && (mw.config.get("wgCanonicalSpecialPageName") == "Search")) {
    var searchEngines = {
        mediawiki: {
            ShortName: "MediaWiki search",
            Template: mw.config.get("wgScript") + "?search={searchTerms}"
        },
        google: {
            ShortName: "Google",
            Template: "https://www.google.com/search?q=site:" + mw.config.get("wgServer").replace(/^.*?\/\//, '') + "&q={searchTerms}"
        },
        wikiwix: {
            ShortName: "Wikiwix",
            Template: "http://www.wikiwix.com/index.php?action={searchTerms}"
        },
        live: {
            ShortName: "Bing",
            Template: "https://www.bing.com/search?q1=site:" + mw.config.get("wgServer").replace(/^.*?\/\//, '') + "&q={searchTerms}"
        },
        yahoo: {
            ShortName: "Yahoo",
            Template: "https://search.yahoo.com/search?p={searchTerms}&vs=" + mw.config.get("wgServer").replace(/^.*?\/\//, '')
        }
    };
    $(externalSearchEngines);
}

function externalSearchEngines()
{
    var mwSearchTopTable = $('#mw-search-top-table');
    if (mwSearchTopTable.length === 0) return;

    var firstEngine = "mediawiki";
    var choices = $('<div>').attr("id", "searchengineChoices").css("clear", "left").css("padding-top", "0.3em");

    for (var id in searchEngines) {
        var engine = searchEngines[id];
        if (engine.ShortName) {
            choices.append(" " );

            $('<label>')
                .attr("for", "searchengineRadio-" + id)
                .append(
                    $('<input>')
                    .attr("type", "radio")
                    .val(id)
                    .data("engine-name", id)
                    .on("focus", changeSearchEngine)
                    .attr("id", "searchengineRadio-" + id)
                )
                .append(" " + engine.ShortName)
                .appendTo(choices);
        }
    }

    $('<input type="hidden" />').attr("id", "searchengineextraparam").appendTo(choices);
    $(choices).insertAfter(mwSearchTopTable);

    $("[id^='searchengineRadio-']").click(function() {
        $("[id^='searchengineRadio-']").not(this).prop('checked', false);
    });

    $("#searchengineRadio-" + firstEngine).prop("checked", true);
}

function changeSearchEngine()
{
    $("#searchengineextraparam").removeAttr("name");

    var radio = $(this).prop("checked", true);

    var selectedEngineName = radio.data("engine-name");
    if (selectedEngineName == $("#searchengineChoices").data("currentChoice")) return;

    $("#searchengineChoices").data("currentChoice", selectedEngineName);

    var engine = searchEngines[selectedEngineName];
    var p = engine.Template.indexOf('?');
    var params = engine.Template.substr(p + 1);

    var form;
    if (document.forms["search"]) {
        form = document.forms["search"];
    } else {
        form = document.getElementById("powersearch");
    }
    form.setAttribute("action", engine.Template.substr(0, p));

    var l = ("" + params).split("&");
    for (var i in l) {
        var pName = l[i].split("=")[0];
        var pValue = l[i].split("=")[1];

        if (pValue == "{language}") {}
        else if (pValue == "{searchTerms}") {
            var input;
            if (document.forms["search"]) {
                input = document.getElementById("searchText");
            } else {
                input = document.getElementById("ooui-php-1") || form.querySelectorAll("[type='search']")[0];
            }

            if (input) {
                if (input.tagName.toUpperCase() != "INPUT") {
                    input = input.getElementsByTagName("input")[0];
                }

                input.name = pName;
            }
        } else {
            $("#searchengineextraparam").attr("name", pName).val(pValue);
        }
    }
    $(form).find("input:not(#searchengineextraparam):not([type='search']):not([id^='searchengineRadio-']").prop("disabled", selectedEngineName != "mediawiki");
}

// == Drop-down language preload menu for [[MediaWiki:Searchmenu-new]] ==

function addNogoPreloadMenu() {
    var preloadGuide = document.getElementById('preloadGuide');
    if (preloadGuide) {
        preloadGuide.style.display = 'inline-block';
        var menu = "<select style=\"float: left; display: inline-block; margin: 0 0 0.4em 0.5em;\" onChange=\"showPreloads(selectedIndex)\">";
        menu += "<option>English</option>";
        var languages = document.getElementsByClassName("searchmenu-language-name");
        for (var i = 0; i < languages.length; ++i) {
            var languageName = languages[i].textContent.trim();
            if (languageName[languageName.length - 1] == ":") {
                languageName = languageName.substring(0, languageName.length - 1);
            }
            menu += "<option>" + languageName + "</option>";
        }
        menu += "</select>";
        var menuDiv = document.getElementById('entryTemplateMenu');
        menuDiv.innerHTML = menu;
        showPreloads(0);
    }
}
$(addNogoPreloadMenu);

window.showPreloads = function (selectedIndex) {
    var languageOptions = document.getElementById('preloadGuide').getElementsByTagName('table');
    for (var i = 0; i < languageOptions.length; i++) {
        if (languageOptions[i].className == "language") {
            languageOptions[i].style.display = i == selectedIndex ? 'block' : 'none';
        }
    }
};