// ==UserScript==
// @name        (SE) Markdown on Share links
// @version     1.4
// @namespace   stackapps.com/users/10590/brasofilo
// @description Changes the share links on Q&As to [question-title](http://post-link)
// @homepage    https://stackapps.com/users/10590/brasofilo
// @icon        http://i.stack.imgur.com/EX9Al.png
// @author      brasofilo
// @copyright   2014, Rodolfo Buaiz (http://stackapps.com/users/10590/brasofilo)
// @license MIT http://opensource.org/licenses/MIT
// @match       *://*.askubuntu.com/*
// @match       *://*.mathoverflow.net/*
// @match       *://*.serverfault.com/*
// @match       *://*.stackapps.com/*
// @match       *://*.stackexchange.com/*
// @match       *://*.stackoverflow.com/*
// @match       *://*.superuser.com/*
// @exclude       *://chat.*
// @exclude       *://blog.*
// @exclude       *://api.*
// @exclude       *://data.*
// @homepageURL http://stackapps.com/questions/4905/10590
// @updateURL   https://gist.github.com/brasofilo/a539c1905608b253fcb6/raw/MarkdownOnShareLinks.user.js
// @downloadURL https://gist.github.com/brasofilo/a539c1905608b253fcb6/raw/MarkdownOnShareLinks.user.js
// @grant none
// ==/UserScript==

(function() {
    'use strict';
    if( StackExchange.options.routeName !== 'Questions/Show' )
        return;

    /**
     * Escapes brackets on string
     */
    var escapeString =function( str ) {
        return str.replace(/\[/g, "\\[").replace(/\]/g, "\\]")
    };

    /**
     * Removes meta content from title and escapes brackets
     * A title like "Burninate [tag-name] [closed]" will become "Burninate \[always-check-your-errors\]"
     */
    var cleanTitle = function( str ) {
        let look = [ ' [closed]', ' [duplicate]', ' [on hold]', ' [migrated]', ' [fechado]', ' [duplicado]', ' [suspensa]', ' [migrado]' ];
        for (var j=0; j<look.length; j++) {
            if (str.indexOf(look[j]) > -1 ) {
                var replace = str.replace(look[j], '');
                return escapeString(replace);
            }
        }
        return escapeString(str);
    };

    /**
     * Restore original share URL
     */
    var restoreURL = function( $goto, $input ) {
        $input.val( $goto ).select();
    };

    /**
     * Replaces the share URL by a markdown link
     */
    var changeShareLink = function( $this ) {
        let $input = $this.find('.s-popover input:first');
        let $url = $input.val();
        if ( $this.find('.clean-url').length === 0 ) {
            let $clean = $( "<button class='clean-url s-btn'>clean url</button>");
            $this.find('div.d-flex').prepend($clean).click(function(e){
                e.preventDefault();
                restoreURL( $url, $input );
                $(this).fadeOut();
            });
        }
        let $title = $('#question-header h1 a').text();
        $title = cleanTitle($title);
        console.log($title, $url)
        let $output = '[' + $title + '](' + $url + ')';
        $input.val( $output ).select();
    };

    $(".js-post-menu a.js-share-link").on("click", function(t) {
        let $this = $(this).parent();
        setTimeout( function(){ changeShareLink( $this ); }, 250 );
    });
})();