$( function () {
    if( skin === 'monobook' ) {
        addPortletLink( 'p-tb', wgServer + wgScriptPath + '/index.php?title=Special:BlankPage&blankspecial=ajaxjqbd', 'Batch Delete');
    } else {
        $( '#my-tools-menu' ).prepend( '<li class="custom"><a href="' + wgServer + wgScriptPath + '/index.php?title=Special:BlankPage&blankspecial=ajaxjqbd" rel="nofollow">Batch Delete</a></li>' );
    }
} );

if( wgCanonicalSpecialPageName === 'Blankpage' && $.getUrlVar( 'blankspecial' ) === 'ajaxjqbd' ) {
    document.title = 'Ajax Batch Delete';
    $( createAjaxDeleteForm );
}

function createAjaxDeleteForm() {
    var pageHeading = ( skin === 'oasis' ) ? ( $( '.AdminDashboardArticleHeader' ).length ? '.AdminDashboardArticleHeader > h1' : '.WikiaPageHeader > h1' ) : 'h1.firstHeading',
        $bodyId = $( '#mw-content-text > p' ),
        bdelFormHtml = '<form id="ajaxdeleteform" action="javascript:void(0);"><textarea style="height: 20em; width: 50%;" id="abd-textarea">'
            + '</textarea><p><label for="abd-reason">Delete reason: </label><input type="text" style="width: 20em;" id="abd-reason" />'
            + '</p><p><input type="button" id="abd-startbutton" value="start" onclick="ajaxDeleteStart()" /></p></form><pre id="abd-output"></pre>';
    $( pageHeading ).text( 'Ajax Batch Delete' );
    $bodyId.text( 'List of pages to delete:' );
    $bodyId.after( bdelFormHtml );
}

function ajaxDeleteStart() {
    document.getElementById( 'abd-startbutton' ).setAttribute( 'disabled', 'disabled' );
    var txt = document.getElementById( 'abd-textarea' ),
        deletes = txt.value.split( '\n' ),
        page = deletes[0],
        reason = document.getElementById( 'abd-reason' ).value,
        badchars = /(\#|\<|\>|\[|\]|\{|\}|\|)/;
    if( page === '' ) {
        $( '#abd-output' ).append( '* Done! Nothing left to do, or next line is blank.\n' );
        document.getElementById( 'abd-startbutton' ).removeAttribute( 'disabled');
    } else {
        if( badchars.test( page ) ) {
            $( '#abd-output' ).append( '! Illegal characters detected, skipping:' + page + '\n' );
            setTimeout( ajaxDeleteStart, 1000 );
        } else {
            $( '#abd-output' ).append( '> Attempting to delete [[' + page + ']]\n' );
            ajaxBatchDeleteAPage( page, reason );
        }
    }
    deletes = deletes.slice(1,deletes.length);
    txt.value = deletes.join( '\n' );
}

function ajaxBatchDeleteAPage( title, reason ) {
    var url =  wgServer + wgScriptPath + '/api.php?action=query&prop=info&intoken=delete|protect&titles=' + encodeURIComponent( title ) + '&format=json';
    $.getJSON( url, function( data ) {
        for ( var p in data.query.pages ) {
            break;
        }
        var DT = data.query.pages[p].deletetoken,
            PT = data.query.pages[p].protecttoken,
            url1 = wgServer + wgScriptPath + '/api.php?title=' + encodeURIComponent( title ) + '&reason=' + encodeURIComponent( reason ) + '&format=json',
            url2 = url1 + '&action=protect&protections=create=sysop&token=' + encodeURIComponent( PT );
            url1 += '&action=delete&token=' + encodeURIComponent( DT );
        $.post( url1, function() {
            $( '#abd-output' ).append( '  > Deleted\n' );
            $( '#abd-output' ).append( '> Attempting to fully protect [[' + page + ']]\n' );
            $.post( url2, function() {
                $( '#abd-output' ).append( '  > Fully protected\n' );
                setTimeout( ajaxDeleteStart, 1000 );
            });
        });
    });
}