// ==UserScript==
// @name        Seenthis Quotator
// @namespace   seenthis
// @description Easy answering with quote
// @include     http://seenthis.net/*
// @include     https://seenthis.net/*
// @version     4
// @grant       none
// ==/UserScript==



// Extrait le nom à afficher à partir de l'élément .auteur
function extractAuthorTitle(elt) {
    var name = elt.find('strong').first().text().trim();
    var login = elt.find('.login').first().text().trim();
    if (isNameUseful(login, name))
        return name + ' (' + login + ')';
    else
        return login;
}



function getSelectedText() {
    var text = "";
    if (window.getSelection) {
        text = window.getSelection().toString();
    } else if (document.selection && document.selection.type != "Control") {
        text = document.selection.createRange().text;
    }
    return text.replace('▻', '').replace('►', '').replace(/^\s*\n/gm, "");
}


function scrollToElement(selector, time, verticalOffset) {
    time = typeof(time) != 'undefined' ? time : 1000;
    verticalOffset = typeof(verticalOffset) != 'undefined' ? verticalOffset : 0;
    element = $(selector);
    offset = element.offset();
    offsetTop = offset.top + verticalOffset;
    $('html, body').animate({
        scrollTop: offsetTop
    }, time);
}

function addSelectedTextInAnswer() {

    var selectedText = getSelectedText();
    console.log(selectedText);
    if (selectedText.length > 0) {
        var selectNode = $(window.getSelection().anchorNode);
        var cont = selectNode.parents('.reponse');
        if (cont.length > 0) {
            var article = cont.find('article');
            var textarea = article.parents('li[id^=message]').find('.formulaire_poster_message textarea');

            var author = extractAuthorTitle(article);
            insertAtTextareaCursor(textarea, author + ' \n❝' + selectedText + '❞\n');

        }

    }
}



function insertAtTextareaCursor(elt, text) {

    var txtarea = elt[0];
    var scrollPos = txtarea.scrollTop;
    var strPos = 0;
    var br = ((txtarea.selectionStart || txtarea.selectionStart == '0') ?
        "ff" : (document.selection ? "ie" : false));
    if (br == "ie") {
        txtarea.focus();
        var range = document.selection.createRange();
        range.moveStart('character', -txtarea.value.length);
        strPos = range.text.length;
    } else if (br == "ff") strPos = txtarea.selectionStart;

    var front = (txtarea.value).substring(0, strPos);
    var back = (txtarea.value).substring(strPos, txtarea.value.length);
    txtarea.value = front + text + back;
    strPos = strPos + text.length;
    if (br == "ie") {
        txtarea.focus();
        var range = document.selection.createRange();
        range.moveStart('character', -txtarea.value.length);
        range.moveStart('character', strPos);
        range.moveEnd('character', 0);
        range.select();
    } else if (br == "ff") {
        txtarea.selectionStart = strPos;
        txtarea.selectionEnd = strPos;
        txtarea.focus();
    }
    txtarea.scrollTop = scrollPos;
}



function isNameUseful(login, name) {
    var nameRaw = name.toLowerCase();
    nameRaw = nameRaw.replace(RegExp('[ @_-]', 'g'), '');
    var loginRaw = login.toLowerCase();
    loginRaw = loginRaw.replace(RegExp('[ @_-]', 'g'), '');
    return nameRaw != loginRaw;
}

function deleteWithLogin(login, things) {
    for (var i = 0; i < things.length; i++) {
        if (things[i]['login'] == login)
            things.splice(i, 1);
    }
    return things;
}

function deleteDuplicate(things) {
    var arr = {};
    for (var i = 0; i < things.length; i++)
        arr[things[i]['login']] = things[i];

    things = new Array();
    for (var key in arr)
        things.push(arr[key]);

    return things;
}





function openCommentInput(elt) {
    var textarea = elt.find('.formulaire_poster_message textarea').first();
    if (!textarea.is(":visible")) {
        elt.find('.bouton_repondre a').click();
    }

    scrollToElement(textarea, 500, -200);
    textarea.focus();
}


// Change le comportement de l'élément @login sous un commentaire
// cliquer sur le login l'insert dans le champ de réponse
$('li[id^=message]').find('.auteur a').click(function() {

    var login = extractAuthorTitle($(this).parent()) + ' ';
    var selTxt = getSelectedText();
    var areaTxt = login;
    if (selTxt.length > 0) {
        areaTxt += "\n❝" + getSelectedText() + "❞";
    }
    openCommentInput($(this).parents('li[id^=message]'));
    insertAtTextareaCursor($(this).parents('li[id^=message]').find('.formulaire_poster_message textarea'), areaTxt);
    return false;
});


// Ajoute un comportement sur Ctrl + Alt + Shift + R
// insert dans le champ de réponse le texte sélectionné ainsi que son auteur
$(document).keydown(function(e) {
    if (e.which == 82 && e.altKey && e.ctrlKey) {
        var article = $(window.getSelection().anchorNode).parents('li[id^=message]');
        if (article.length > 0) {
            addSelectedTextInAnswer();
            openCommentInput(article);
        }
    }
});


// Ajoute la liste des logins participant à la discussion sous le textarea
$('#messages textarea').each(function() {


    var cont = $('<div class="completeAuthor author"></div>');
    cont.css('font-size', '0.7em');
    cont.css('margin-top', '5px');
    cont.css('float', 'left');

    $(this).parent().append(cont);
    var authorList = [];
    var authors = [];
    $(this).parents('li[id^=message]')
        .find('.auteur').each(function() {
            var name = $(this).find('strong').first().text();
            var login = $(this).find('a').first().attr('href').
            replace('people/', '');
            authorList.push(name);
            authors.push({
                'login': login,
                'name': name
            });
        });

    authors = deleteDuplicate(authors);

    authors = deleteWithLogin($('#entete .perso .nom_auteur').text(), authors);


    for (var i = 0; i < authors.length; i++) {

        var name;
        if (isNameUseful(authors[i]['login'], authors[i]['name']))
            name = authors[i]['name'] + '(@' + authors[i]['login'] + ')';
        else
            name = '@' + authors[i]['login'];



        var html = '<span><a class="login quotator_login" data-login="' + authors[i]['login'] + '" href="javascript:void(0);">' + name + '</a> ';

        if (i < authors.length - 1)
            html += ' &bullet; ';

        html += '</span>';
        cont.append($(html));

    }


    cont.find('a').each(function() {
        $(this).css('text-decoration', 'none').css('color', '#333');
    });

    cont.find('.quotator_login').click(function() {
        insertAtTextareaCursor($(this).parents('li[id^=message]').first().find('.formulaire_poster_message textarea').first(), '@' + $(this).attr('data-login') + ' ');
    });


});