User:Teemu08/NRHPbutton.js

function RenumberButton() {
    if (wgPageName.search("National_Register_of_Historic_Places_listings_in")==-1) return
    var button=document.createElement("input")
    button.setAttribute("type", "button");
    button.setAttribute("value", "Renumber list");
    button.setAttribute("id", "button");
    button.setAttribute("onclick", "RenumberClick()");
    var content=document.getElementById('mw-content-text')
 
    content.parentNode.insertBefore(button, content)
}
 
function RenumberClick() { 
    var button = document.getElementById('button')
    button.disabled = true
    getWikitext(wgPageName)
}
 
function getWikitext(title) {
    $.getJSON(
        mw.util.wikiScript('api'),
        {
            format: 'json',
            action: 'query',
            prop: 'revisions',
            rvprop: 'content',
            titles: title,
            indexpageids: true
        }
    )
        .done(function (data) {
            var page, wikitext;
            for (page in data.query.pages) {
                wikitext = data.query.pages[page].revisions[0]['*'];
                RenumberList(wikitext)
            }
        })
        .fail(function() {
            alert('Could not get wikitext; failure.');
        });
}
 
function RenumberList(wikitext) {
    var StartIndex = 0
    var str = "|pos="
    var skip = str.length;
    var index, RowLocations = [];
    while ((index = wikitext.indexOf(str, StartIndex)) > -1) {
        RowLocations.push(index);
        StartIndex = index + skip;
    }
 
    var stop=RowLocations.length+1
    for (var i=1; i<stop; i++) {
        var StartIndex = RowLocations[i-1]+1
        var str="|"
        var NextParam = wikitext.indexOf(str,StartIndex)
        wikitext = wikitext.substr(0,RowLocations[i-1])+"|pos="+i+wikitext.substr(NextParam-1,wikitext.length-NextParam+1)
 
        var StartIndex = 0
        var str = "|pos="
        var skip = str.length;
        var index, RowLocations = [];
        while ((index = wikitext.indexOf(str, StartIndex)) > -1) {  // find location of each county row in wikitext string
            RowLocations.push(index);
            StartIndex = index + skip;
        }
    }
    editNRHPPage({
        title: wgPageName,
        text: wikitext,
        summary: 'Semi-automated renumbering of list items after addition/deletion.'
    });
}
 
function editNRHPPage(info) {
    $.ajax({
        url: mw.util.wikiScript( 'api' ),
        type: 'POST',
        dataType: 'json',
        async: false,
        data: {
            format: 'json',
            action: 'edit',
            title: info.title,
            text: info.text,
            summary: info.summary,
            token: mw.user.tokens.get( 'editToken' )
        }
    })
        .done (function( data ) {
            if (data && data.edit && data.edit.result && data.edit.result == 'Success') {
                alert("Success! Rows renumbered!")
            } else {
                alert("Error! Rows not renumbered! Refresh the page to try again")
            }
        })
        .fail (function() {
            alert('Ajax failure.');
        });
}
 
$(RenumberButton);