var commit;
var Commit = Class.create({
	initialize: function(obj) {
		this.raw = obj.details;
		this.refs = obj.refs;
		this.object = obj;

		var diffStart = this.raw.indexOf("\ndiff ");
		var messageStart = this.raw.indexOf("\n\n") + 2;

		if (diffStart > 0) {
			this.message = this.raw.substring(messageStart, diffStart).gsub(/^    /m, "").escapeHTML();
			this.diff = this.raw.substring(diffStart);
		} else {
			this.message = this.raw.substring(messageStart).gsub(/^    /m, "").escapeHTML();
			this.diff = "";
		}
		this.header = this.raw.substring(0, messageStart);

		this.sha = this.header.match(/^commit ([0-9a-f]{40,40})/)[1];

		var match = this.header.match(/\nauthor (.*) <(.*@.*)> ([0-9].*)/);
		this.author_name = match[1];
		if (!(match[2].match(/@[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}/)))
			this.author_email = match[2];

		this.author_date = new Date(parseInt(match[3]) * 1000);

		match = this.header.match(/\ncommitter (.*) <(.*@.*)> ([0-9].*)/);
		this.committer_name = match[1];
		this.committer_email = match[2];
		this.committer_date = new Date(parseInt(match[3]) * 1000);

		this.parents = obj.parents;
	},
	reloadRefs: function() {
		this.refs = CommitObject.refs;
	}
});

var notify = function(text, busy) {
	var n = $("notification");
	n.style.display = "";
	if (busy)
		$("spinner").style.display = "";
	else
		$("spinner").style.display = "none";
	
	$("notification_message").innerHTML = text;
}

var gistie = function() {
	notify("Uploading code to Gistie..", true);
	parameters = {
		"file_ext[gistfile1]":      "patch",
		"file_name[gistfile1]":     commit.object.subject.replace(/[^a-zA-Z0-9]/g, "-") + ".patch",
		"file_contents[gistfile1]": commit.object.patch(),
	};

	// TODO: Replace true with private preference
	token = Controller.getConfig_("github.token");
	login = Controller.getConfig_("github.user");
	if (token && login)
	{
		parameters.login = login;
		parameters.token = token;
	} else {
		parameters.private = true;
	}

	new Ajax.Request("http://gist.github.com/gists", {
		method: 'post',
		parameters: parameters,

		onSuccess: function(t) {
			if (m = t.responseText.match(/gist: ([a-f0-9]+)/))
				notify("Code uploaded to gistie <a target='_new' href='http://gist.github.com/" + m[1] + "'>#" + m[1] + "</a>");
			else
				notify("Pasting to Gistie failed.");
		},
		onFailure: function(t) {
			notify("Pasting to Gistie failed.");
		},
		onException: function(t) {
			notify("Pasting to Gistie failed.");
		},
		
	});
	
}

var selectCommit = function(a) {
	Controller.selectCommit_(a);
}

var showDiffs = function() {
	$("details").hide();

	$("details").innerHTML = commit.diff.escapeHTML();

	highlightDiffs();
	$("details").show();
}

var reload = function() {
	$("notification").style.display = "none";
	commit.refs = null;
	showRefs();
	commit.reloadRefs();
	showRefs();
}

var showRefs = function() {
	if (commit.refs){
		$('refs').parentNode.style.display = "";
		$('refs').innerHTML = "";
		$A(commit.refs).each(function(ref) {
							 curBranch = "";
							 $('refs').innerHTML += '<span class="refs ' + ref.type()  + (CurrentBranch == ref.ref ? ' currentBranch' : '') + '">' + ref.shortName() + '</span>';
							 });
	} else
		$('refs').parentNode.style.display = "none";
}

var loadCommit = function() {
	commit = new Commit(CommitObject);
	$("notification").style.display = "none";

	$("commitID").innerHTML = commit.sha;
	if (commit.author_email) {
		$("authorID").innerHTML = commit.author_name + " &lt;<a href='mailto:" + commit.author_email + "'>" + commit.author_email + "</a>&gt;";
		$("gravatar").src = "http://www.gravatar.com/avatar/" + hex_md5(commit.author_email) + "?d=wavatar";
	}
	else {
		$("authorID").innerHTML = commit.author_name;
		$("gravatar").src = "http://www.gravatar.com/avatar/?d=wavatar";
	}
	$("date").innerHTML = commit.author_date;
	$("subjectID").innerHTML =CommitObject.subject.escapeHTML();
	
	$A($("commit_header").rows).each(function(row) {
		if (row.innerHTML.match(/Parent:/))
			row.remove();
	});
	commit.parents.each(function(parent) {
		var new_row = $("commit_header").insertRow(-1);
		new_row.innerHTML = "<td class='property_name'>Parent:</td><td><a href='' onclick=\"selectCommit(this.innerHTML); return false;\">" + parent + "</a></td>";
	});

	showRefs();

	$("message").innerHTML = commit.message.replace(/\n/g,"<br>");

	if (commit.diff.length < 200000) {
		showDiffs();
	} else {
		$("details").innerHTML = "<a class='showdiff' href='' onclick='showDiffs(); return false;'>This is a large commit. Click here or press 'v' to view.</a>";
	}

	scroll(0, 0);
}