User:Lyrithya/batchdelete.js

//<code><nowiki>
/* Ajax batch delete thingy, version [0.1.1b]
Originally from: http://en.wikipedia.org/wiki/User:Splarka/ajaxbatchdelete.js
 
Notes:
* It is a bit verbose, after debugging perhaps some output should be removed.
* It waits 1 second after every delete before starting the next.
* Can be aborted by simply deleting the contents of the textarea, or leaving the page.
* Stops when it hits a blank line.
* Nonfatal errors (skip to next line):
** Bad character or malformed line
** Bad token
** Unexpected response
* Pauses in execution can be added with a blank line.

To do:
* Cache the token if two the same?
** Please note the delete token is not guaranteed to be static, but currently it always is.
*/

addOnloadHook(function() {addPortletLink('p-tb','/wiki/Special:BlankPage?blankspecial=ajaxbd','Batch Delete');});

if(wgCanonicalSpecialPageName && wgCanonicalSpecialPageName.toLowerCase() == 'blankpage' && queryString('blankspecial') == 'ajaxbd') {
	document.title = 'Ajax Batch Deletion';
	addOnloadHook(abdForm);
}

function abdForm() {
	addPortletLink('p-tb','/wiki/Special:Log/delete?user=' + encodeURIComponent(wgUserName),'My delete log');

	//subvert this Special: page to our own needs.
	var con = document.getElementById('content') || document.getElementById('mw_content');
	var bcon = document.getElementById('bodyContent') || document.getElementById('mw_contentholder');
	var fh = getElementsByClassName(con,'h1','firstHeading')[0];
	while(fh.firstChild) fh.removeChild(fh.firstChild)
		fh.appendChild(document.createTextNode('Ajax Batch Deletion'));
	for(var i=0;i<bcon.childNodes.length;i++) {
		bcur = bcon.childNodes[i];
		if(bcur.id != 'siteSub' && bcur.id != 'contentSub' && bcur.className != 'visualClear') {
			while(bcur.firstChild) bcur.removeChild(bcur.firstChild)
			if(bcur.nodeType == 3) bcur.nodeValue = '';
		}
	}

	//generate content
	var form = document.createElement('form');
		form.appendChild(document.createTextNode('List of pages to delete:'));
		form.appendChild(document.createElement('p'));
		form.setAttribute('action','javascript:void(0);');
	var txt = document.createElement('textarea');
		txt.style.height = '20em';
		txt.style.width = '50%';
		txt.setAttribute('id','abd-textarea');
		form.appendChild(txt);
		form.appendChild(document.createElement('p'));
	var lab1 = document.createElement('label');
		lab1.setAttribute('for','abd-reason');
		lab1.appendChild(document.createTextNode('Deletion reason: '));
		form.appendChild(lab1);
	var inp1 = document.createElement('input');
		inp1.style.width = '20em';
		inp1.setAttribute('type','text');
		inp1.setAttribute('id','abd-reason');
		form.appendChild(inp1);
		form.appendChild(document.createElement('p'));
	var sub1 = document.createElement('input');
		sub1.setAttribute('type','button');
		sub1.setAttribute('id','abd-startbutton');
		sub1.setAttribute('value','start');
		sub1.setAttribute('onclick','abdStart()');
		form.appendChild(sub1);
		bcon.appendChild(form);
	var pre = document.createElement('pre');
		pre.setAttribute('id','abd-output');
		bcon.appendChild(pre);
}

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

function abdGetToken(page) {
	var out = document.getElementById('abd-output');
	out.appendChild(document.createTextNode(' > Fetching delete token for [[' + page + ']]\n'));
	var url = wgScriptPath + '/api.php?action=query&prop=info&indexpageids=1&intoken=delete&format=json&titles=' + encodeURIComponent(page);
	var req = sajax_init_object();
		req.open('GET', url, true);
		req.onreadystatechange = function() {
			if(req.readyState == 4 && req.status == 200) {
			eval("abdDelete(" + req.responseText + ",'" + req.responseText.replace(/\'/g,"`") + "','" + page + "')");
		}
	}
	req.send(null);
}

function abdDelete(obj,txt,page) {
	var out = document.getElementById('abd-output');
	if(obj['error']) {
		out.appendChild(document.createTextNode(' ! Api error: ' + obj['error']['code'] + ' - ' + obj['error']['info'] + '\n'));
		return;
  	}
	if(!obj['query'] || !obj['query']['pageids'] || !obj['query']['pages'][obj['query']['pageids'][0]] || !obj['query']['pages'][obj['query']['pageids'][0]]['deletetoken']) {
		out.appendChild(document.createTextNode('  ? Unexpected response: ' + txt + '\n'));
		return;
	}
	var token = obj['query']['pages'][obj['query']['pageids'][0]]['deletetoken'];
	out.appendChild(document.createTextNode('  > Token found, attempting delete\n'));
	var reason = document.getElementById('abd-reason').value;

	var params = 'action=delete&format=json&token=' + encodeURIComponent(token) + '&title=' + encodeURIComponent(page) + '&reason=' + encodeURIComponent(reason);
	var url = wgScriptPath + '/api.php';

	var req = sajax_init_object();
		req.open('POST', url, true);
		req.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
		req.setRequestHeader('Content-length', params.length);
		req.setRequestHeader('Connection', 'close');
		req.onreadystatechange = function() {
			if(req.readyState == 4 && req.status == 200) {
			eval("abdDeleteAftermath(" + req.responseText + ",'" + req.responseText.replace(/\'/g,"`") + "')");
		}
	}
	req.send(params);
}

function abdDeleteAftermath(obj,txt) {
	var out = document.getElementById('abd-output');
	if(obj['error']) {
		out.appendChild(document.createTextNode('   ! Api error: ' + obj['error']['code'] + ' - ' + obj['error']['info'] + '\n'));
	} else if(obj['delete'] && obj['delete']['title']) {
		out.appendChild(document.createTextNode('   > Page [[' + obj['delete']['title'] + ']] deleted\n'));
	} else {
		out.appendChild(document.createTextNode('   ? Unexpected response: ' + txt + '\n'));
		return;
	}
	setTimeout('abdStart()',1000);
}

function queryString(p) {
	var re = RegExp('[&?]' + p + '=([^&]*)');
	var matches;
	if (matches = re.exec(document.location)) {
		try { 
			return decodeURI(matches[1]);
		} catch (e) {
		}
	}
	return null;
}

//</nowiki></code>