///Adapted from [[User:Animum/massdelete.js]]
function doMassUnblock() {
    document.getElementById("wpMassUnblockSubmit").disabled = true;
    var users = document.getElementById("wpMassUnblockUsers").value.split("\n");
    if(users.length == 0) return;
    var wpMassUnblockReason = document.getElementById("wpMassUnblockReason").value, unblocked = 0, failed = new Array(), error = new Array();
    for(i=0;i<users.length;i++) {
        var user = users[i];
        if(user.length > 0) {
            var req = new XMLHttpRequest();
            req.open("GET", mw.config.get('wgScriptPath') + "/api.php?format=json&action=query&prop=info&meta=tokens&type=csrf&titles=User:" + encodeURIComponent(user), false);
            req.send(null);
            var query = eval("(" + req.responseText + ")").query;
            var token = query.tokens.csrftoken;
            var response = query.pages;
            for(var index in response) {
                var info = response[index];
                var postdata = "format=json"
                             + "&action=unblock"
                             + "&user=" + encodeURIComponent(user)
                             + "&reason=" + encodeURIComponent(wpMassUnblockReason)
                             + "&token=" + encodeURIComponent(token);
                var req = new XMLHttpRequest();
                req.open("POST", mw.config.get('wgScriptPath') + "/api.php", false);
                req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
                req.setRequestHeader("Content-length", postdata.length);
                req.send(postdata);
                if(eval("(" + req.responseText + ")").unblock) { //If unblocked, update the unblocked count and the button.
                    unblocked++;
                    document.getElementById("wpMassUnblockSubmit").value = "(" + unblocked + ")";
                } else { //If not deleted, add the title to the "failed" array and a description of the error to the "error" array.
                    failed.push(user);
                    error.push(eval("(" + req.responseText + ")").error.info);
                }
            }
        }
        if(!users[i+1]) {
            document.getElementById("wpMassUnblockSubmit").value = "Done (" + unblocked + ")";
            if(failed.length > 0) {
                var linkedList = "";
                for(x=0; x<failed.length; x++) {
                    linkedList += "<li><a href=\"" + mw.config.get('wgScript') + "?title=" + encodeURIComponent(failed[x]) + "\">" + failed[x] + "</a>: " + error[x] + "</li>"; //Links the titles in the "failed" array
                }
                document.getElementById("wpMassUnblockFailedContainer").innerHTML += '<br /><b>Failed unblocks:</b><ul>' + linkedList + '</ul>';
            }
            
        }
    }
}
 
function massUnblockform() {
    var bodyContent;
	switch (mw.config.get('skin')) {
		case 'modern':
			bodyContent = 'mw_contentholder';
			break;
		case 'cologneblue':
			bodyContent = 'article';
			break;
		case 'monobook':
		case 'vector':
		default:
			bodyContent = 'bodyContent';
			break;
	}
    document.getElementsByTagName("h1")[0].textContent = "Tim's mass-unblocking tool";
    document.title = "Tim's mass-unblocking tool - Wikipedia, the free encyclopedia";
    document.getElementById(bodyContent).innerHTML = '<h3 id="siteSub">From Wikipedia, the free encyclopedia</h3><br /><br />'
        + '<form id="wpMassUnblock" name="wpMassUnblock">'
        + '<b>If you abuse this tool, it\'s <i>your</i> fault, not mine.</b>'
        + '<div id="wpMassUnblockFailedContainer"></div>'
        + '<br /><br />'
            + 'Users to unblock (one on each line, please):<br />'
                + '<textarea tabindex="1" accesskey="," name="wpMassUnblockUsers" id="wpMassUnblockUsers" rows="10" cols="80"></textarea>'
            + '<br /><br /><table style="background-color:transparent">'
            + '<tr><td>Reason:</td>'
                + '<td><input type="text" id="wpMassUnblockReason" name="wpMassUnblockReason" maxlength="255" /></td></tr>'
                + '<tr><td><input type="button" id="wpMassUnblockSubmit" name="wpMassUnblockSubmit" value="Unblock" onclick="doMassUnblock()" /></td>'
        + '</form>';
}
 
if(mw.config.get("wgNamespaceNumber") == -1 && mw.config.get("wgTitle").toLowerCase() == "massunblock" && /sysop/.test(mw.config.get("wgUserGroups"))) $(massUnblockform);