/*jslint browser: true, onevar: true, undef: true, nomen: true, eqeqeq: true,
  plusplus: true, bitwise: true, regexp: true, newcap: true, immed: true */
/*global $, window, document, navigator, google */

/* mwForum - Web-based discussion forum
Copyright (c) 1999-2010 Markus Wichitill

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. */

var mwf = { p: $.parseJSON($('meta[name=jsparams]').attr('content')) };

$(document).ready(function () {
	var script = mwf.p.env_script;
	if (mwf.p.cfg_boardJumpList) { mwf.initBoardList(); }
	if (mwf.p.tagButtons) { mwf.initTagButtons(); }
	if (script === 'topic_show') {
		mwf.initToggleBranch();
		mwf.initKeyNavigation();
		mwf.initRevealPost();
	}
	else if (script === 'topic_add' || script === 'post_add' || script === 'post_edit') {
		mwf.initInsertRaw();
	}
	else if (script === 'user_info') {
		mwf.initGoogleMaps();
	}
	else if (script === 'user_profile') {
		mwf.initGeolocate();
	}
	mwf.initDataVersion();
});

$(window).load(function () {
	if (mwf.p.env_script === 'topic_show') { mwf.initFocusPost(); }
	else if (!('autofocus' in document.createElement('input'))) { $('.fcs:first').focus(); }
});

mwf.navigate = function (href) {
	if (mwf.navigating) { return; }
	mwf.navigating = true;
	window.location = href;
};

mwf.initBoardList = function () {
	$('[name=bid]').change(function () {
		var ext = mwf.p.m_ext,
			sid = mwf.p.m_sessionId ? 'sid=' + mwf.p.m_sessionId : '',
			id = this.options[this.selectedIndex].value;
		if (id.indexOf('cid') === 0) { mwf.navigate('forum_show' + ext + '?' + sid + '#' + id); }
		else if (id === 0) { mwf.navigate('forum_show' + ext + '?' + sid); }
		else { mwf.navigate('board_show' + ext + '?' + 'bid=' + id + ';' + sid); }
	});
};

mwf.scrollToPost = function (ob) {
	mwf.currPostOb = ob;
	ob.parents('.brn:hidden').each(function () { mwf.toggleBranch(this.id.substr(3)); });
	ob.find('.psl').focus();
	window.scrollTo(0, ob.offset().top - 5);
};

mwf.initFocusPost = function () {
	$('.psl').live('focus', function () {
		$('.pst.fcp').removeClass('fcp');
		mwf.currPostOb = $(this).closest('.pst');
		mwf.currPostOb.addClass('fcp');
	});
	$('.prl, .nnl').live('click', function () {
		var href = $(this).attr('href');
		if (href.indexOf('#') === 0) {
			mwf.scrollToPost($(href));
			return false;
		}
	});
	if (mwf.p.scrollPostId > 0) {
		mwf.scrollToPost($('#pid' + mwf.p.scrollPostId));
	}
	else if (window.location.search.match(/\bfoc=last\b/)) {
		mwf.scrollToPost($('.pst:last'));
	}
	else {
		mwf.currPostOb = $('.pst:first');
		mwf.currPostOb.find('.psl').focus();
	}
};

mwf.toggleBranch = function (postId) {
	var tglObs = postId ? $('#tgl' + postId) : $('.tgl'),
		brnObs = postId ? $('#brn' + postId) : $('.brn');
	if (brnObs.is(':hidden')) {
		tglObs.removeClass('sic_nav_plus').addClass('sic_nav_minus').
			attr({ title: mwf.p.lng_tpcBrnCollap, alt: '-' });
		if (postId) { brnObs.slideDown(); }
		else { brnObs.show(); }
	}
	else {
		tglObs.removeClass('sic_nav_minus').addClass('sic_nav_plus').
			attr({ title: mwf.p.lng_tpcBrnExpand, alt: '+' });
		if (postId) { brnObs.slideUp(); }
		else { brnObs.hide(); }
	}
};

mwf.initToggleBranch = function () {
	$('.brn.clp').hide();
	$('.tgl').live('click', function (ev) {
		if (ev.shiftKey) { mwf.toggleBranch(); }
		else { mwf.toggleBranch(this.id.substr(3)); }
	});
};

mwf.initKeyNavigation = function () {
	$(document).keydown(function (ev) {
		var mode, obs, ob, i, href;
		if (ev.ctrlKey || $(ev.target).is('input, textarea, select')) { return; }
		if (ev.which === 106) { mwf.toggleBranch(); }
		switch (String.fromCharCode(ev.which)) {
			case 'W': mode = 'up';    break;
			case 'S': mode = 'down';  break;
			case 'A': mode = 'left';  break;
			case 'D': mode = 'right'; break;
			case 'E': mode = 'next';  break;
			default: return;
		}
		if (mode === 'up') {
			obs = $('.pst:visible');
			if ((i = obs.index(mwf.currPostOb)) > 0) {
				mwf.scrollToPost(obs.eq(i - 1));
			}
			else if ((obs = $('.sic_nav_prev')).length === 4) {
				mwf.navigate(obs.eq(1).parent().attr('href') + ';foc=last');
			}
		}
		else if (mode === 'down') {
			obs = $('.pst:visible');
			if ((i = obs.index(mwf.currPostOb)) >= 0 && i + 1 < obs.length) {
				mwf.scrollToPost(obs.eq(i + 1));
			}
			else if ((obs = $('.sic_nav_next')).length === 4) {
				mwf.navigate(obs.eq(1).parent().attr('href'));
			}
		}
		else if (mode === 'left') {
			if (mwf.currPostOb.next().is('.brn:visible')) {
				mwf.toggleBranch(mwf.currPostOb.attr('id').substr(3));
			}
			else if ((ob = mwf.currPostOb.find('.sic_nav_up')).length) {
				href = ob.parent().attr('href');
				if (href && href.indexOf('#') === 0) {
					mwf.scrollToPost($('#pid' + href.substr(4)));
				}
				else if (href) {
					mwf.navigate(href);
				}
			}
		}
		else if (mode === 'right') {
			if (mwf.currPostOb.next('.brn:hidden').length) {
				mwf.toggleBranch(mwf.currPostOb.attr('id').substr(3));
			}
			else if (mwf.currPostOb.next('.brn').length) {
				mwf.scrollToPost(mwf.currPostOb.next().find('.pst:first'));
			}
		}
		else if (mode === 'next') {
			if (mwf.currPostOb.is('.new, .unr')) {
				obs = $('.pst.new, .pst.unr');
				if ((i = obs.index(mwf.currPostOb)) >= 0 && i + 1 < obs.length) {
					mwf.scrollToPost(obs.eq(i + 1));
				}
				else if ((ob = mwf.currPostOb.find('.sic_post_nn')).length) {
					mwf.navigate(ob.parent().attr('href'));
				}
			}
			else {
				if ((ob = $('.pst.new, .pst.unr').first()).length) {
					mwf.scrollToPost(ob);
				}
				else if ((ob = $('.sic_post_nn:first')).length) {
					mwf.navigate(ob.parent().attr('href'));
				}
			}
		}
	});
};

mwf.initRevealPost = function () {
	$('.frm.pst.ign').live('click', function () {
		$(this).find('.bcl').show();
		$(this).find('.ccl').slideDown();
	});
};

mwf.insertTags = function (tag1, tag2) {
	var range, sel, scroll, start, end, before, after, caret,
		el = $('.tgi')[0];
	el.focus();
	if (document.selection) {
		range = document.selection.createRange();
		sel = range.text;
		range.text = tag2 ? '[' + tag1 + ']' + sel + '[/' + tag2 + ']' : ':' + tag1 + ':';
		range = document.selection.createRange();
		if (tag2 && !sel.length) { range.move('character', -tag2.length - 3); }
		else if (tag2) { range.move('character', tag1.length + 2 + sel.length + tag2.length + 3); }
		range.select();
	}
	else if (typeof el.selectionStart !== 'undefined') {
		scroll = el.scrollTop;
		start = el.selectionStart;
		end = el.selectionEnd;
		before = el.value.substring(0, start);
		sel = el.value.substring(start, end);
		after = el.value.substring(end, el.textLength);
		el.value = tag2 ? before + '[' + tag1 + ']' + sel + '[/' + tag2 + ']' + after :
			before + ':' + tag1 + ':' + after;
		caret = sel.length === 0 ? start + tag1.length + 2 :
			start + tag1.length + 2 + sel.length + tag2.length + 3;
		el.selectionStart = caret;
		el.selectionEnd = caret;
		el.scrollTop = scroll;
	}
};

mwf.initTagButtons = function () {
	var html, selOb,
		dlOb = $('#snippets');
	$('.tbt').live('click', function () {
		var match = this.id.match(/tbt_([a-z]+)(?:_([a-z]+))?/),
			tag1 = match[1],
			tag2 = tag1;
		if ($(this).hasClass('tbt_p')) { tag1 += '='; }
		else if (match[2]) { tag1 += '=' + match[2]; }
		mwf.insertTags(tag1, tag2);
	});
	$('.tbc').live('click', function () { mwf.insertTags(this.id.substr(4)); });
	if (!dlOb) { return; }
	html = '<option selected="selected" disabled="disabled">' + mwf.p.lng_tbbInsSnip + '</option>';
	dlOb.children('dt').each(function () {
		html = html + '<option>' + $(this).text() + '</option>';
	});
	selOb = $('<select size="1">' + html + '</select>').insertAfter(dlOb);
	$('<button type="button" class="snp">+</button>').insertAfter(selOb).
		click(function () {
			var start, end, before, after,
				name = selOb.find('option:selected').text(),
				text = dlOb.find('dt:contains(' + name + ')').next().text(),
				el = $('.tgi')[0];
			el.focus();
			if (document.selection) {
				document.selection.createRange().text = text;
			}
			else if (typeof el.selectionStart !== 'undefined') {
				start = el.selectionStart;
				end = el.selectionEnd;
				before = el.value.substring(0, start);
				after = el.value.substring(end, el.textLength);
				el.value = before + text + after;
			}
		});
};

mwf.initInsertRaw = function () {
	$('#rawlnk').click(function () {
		$(this).hide();
		$('#rawfld').slideDown();
	});
};

mwf.initGoogleMaps = function () {
	if (!mwf.p.location) { return; }
	var geocoder = new google.maps.Geocoder();
	geocoder.geocode({ address: mwf.p.location, country: mwf.p.countryCode,
		language: mwf.p.uaLangCode }, function (results, status) {
			var txt, i, result,
				mapOb = $('#map');
			if (status !== google.maps.GeocoderStatus.OK) {
				mapOb.closest('.frm').hide();
				return;
			}
			mwf.viewport = results[0].geometry.viewport;
			if (mwf.p.location.match(/^[\s\d\.\-]+$/)) { results = results.slice(0, 1); }
			if (results[0].formatted_address) {
				txt = results[0].formatted_address;
				if (results.length > 1) {
					txt += ' (' + (results.length - 1) + ' ' + mwf.p.lng_uifMapOthrMt + ')';
				}
				$('#loc').append(txt);
			}
			mwf.map = new google.maps.Map(mapOb[0], { mapTypeId: google.maps.MapTypeId.ROADMAP,
				center: results[0].geometry.location, zoom: 4 });
			mwf.mapMarkers = [];
			for (i = 0; (result = results[i]); i += 1) {
				mwf.mapMarkers.push(
					new google.maps.Marker({ map: mwf.map, position: result.geometry.location,
					title: result.formatted_address + ' [' + result.geometry.location_type + ']' }));
			}
	});
	$('#loc').click(function () { mwf.map.fitBounds(mwf.viewport); });
};

mwf.initGeolocate = function () {
	if (mwf.p.cfg_userInfoMap < 1 || !navigator.geolocation) { return; }
	$('#loc').show().click(function () {
		navigator.geolocation.getCurrentPosition(function (p) {
			$('[name=location]').val(p.coords.latitude + ' ' + p.coords.longitude);
		});
	});
};

mwf.initDataVersion = function () {
	$('.cpr').dblclick(function () {
		$.post('ajax_dataversion' + mwf.p.m_ext, { foo: 'bar' }, function (json) {
			$('.cpr:first').after('<p class="cpr">' + (json.error || json.dataVersion) + '</p>');
		});
	});
};