wn.pages['general-ledger'].onload = function(wrapper) { 
	wn.ui.make_app_page({
		parent: wrapper,
		title: 'General Ledger',
		single_column: true
	});
	
	erpnext.general_ledger = new wn.views.GridReport({
		title: "General Ledger",
		page: wrapper,
		parent: $(wrapper).find('.layout-main'),
		appframe: wrapper.appframe,
		doctypes: ["Company", "Account", "GL Entry"],

		setup_columns: function() {
			this.columns = [
				{id: "posting_date", name: "Posting Date", field: "posting_date", width: 100,
					formatter: this.date_formatter},
				{id: "account", name: "Account", field: "account", width: 240, 	
					link_formatter: {
						filter_input: "account",
						open_btn: true,
						doctype: '"Account"'
					}},
				{id: "debit", name: "Debit", field: "debit", width: 100,
					formatter: this.currency_formatter},
				{id: "credit", name: "Credit", field: "credit", width: 100,
					formatter: this.currency_formatter},
				{id: "voucher_type", name: "Voucher Type", field: "voucher_type", width: 120},
				{id: "voucher_no", name: "Voucher No", field: "voucher_no", width: 160,
					link_formatter: {
						filter_input: "voucher_no",
						open_btn: true,
						doctype: "dataContext.voucher_type"
					}},
				{id: "remarks", name: "Remarks", field: "remarks", width: 200,
					formatter: this.text_formatter},
					
			];
		},
		filters: [
			{fieldtype:"Select", label: "Company", link:"Company", default_value: "Select Company...",
				filter: function(val, item, opts) {
					return item.company == val || val == opts.default_value;
				}},
			{fieldtype:"Select", label: "Account", link:"Account", default_value: "Select Account...",
				filter: function(val, item, opts, me) {
					if(val == opts.default_value) {
						return true;
					} else {
						// true if GL Entry belongs to selected
						// account ledger or group
						return me.is_child_account(val, item.account);
					}
				}},
			{fieldtype:"Data", label: "Voucher No",
				filter: function(val, item, opts) {
					if(!val) return true;
					return (item.voucher_no && item.voucher_no.indexOf(val)!=-1);
				}},
			{fieldtype:"Date", label: "From Date", filter: function(val, item) {
				return dateutil.str_to_obj(val) <= dateutil.str_to_obj(item.posting_date);
			}},
			{fieldtype:"Label", label: "To"},
			{fieldtype:"Date", label: "To Date", filter: function(val, item) {
				return dateutil.str_to_obj(val) >= dateutil.str_to_obj(item.posting_date);
			}},
			{fieldtype:"Button", label: "Refresh", icon:"icon-refresh icon-white", cssClass:"btn-info"},
			{fieldtype:"Button", label: "Reset Filters"}
		],
		init_filter_values: function() {
			this.filter_inputs.company.val(sys_defaults.company);
			this.filter_inputs.from_date.val(dateutil.str_to_user(sys_defaults.year_start_date));
			this.filter_inputs.to_date.val(dateutil.str_to_user(sys_defaults.year_end_date));
			this.filter_inputs.voucher_no.val("");
			this.filter_inputs.account.get(0).selectedIndex = 0;			
		},
		is_child_account: function(account, item_account) {
			account = this.account_by_name[account];
			item_account = this.account_by_name[item_account];
			
			return (item_account.lft >= account.lft && item_account.rgt <= account.rgt)			
		},
		prepare_data: function() {
			// add Opening, Closing, Totals rows
			// if filtered by account and / or voucher
			var data = wn.report_dump.data["GL Entry"];
			var out = [];
			
			if(!this.account_by_name)
				this.account_by_name = this.make_name_map(wn.report_dump.data["Account"]);
				
			var me = this;
			
			var from_date = dateutil.str_to_obj(this.from_date);
			var to_date = dateutil.str_to_obj(this.to_date);
			
			if(to_date < from_date) {
				msgprint("From Date must be before To Date");
				return;
			}
			
			var opening = {
				account: "Opening", debit: 0.0, credit: 0.0, 
					id:"_opening", _show: true, _style: "font-weight: bold"
			}
			var totals = {
				account: "Totals", debit: 0.0, credit: 0.0, 
					id:"_totals", _show: true, _style: "font-weight: bold"
			}
			
			$.each(data, function(i, item) {
				if((!me.is_default("account") ? me.is_child_account(me.account, item.account) : true) && 
					(me.voucher_no ? item.voucher_no==me.voucher_no : true)) {

					var date = dateutil.str_to_obj(item.posting_date);
					
					if(date < from_date) {
						opening.debit += item.debit;
						opening.credit += item.credit;
					} else if(date <= to_date) {
						totals.debit += item.debit;
						totals.credit += item.credit;						
					}

					if(me.apply_filters(item)) {
						out.push(item);
					}
				}
			})

			var closing = {
				account: "Closing (Opening + Totals)", debit: opening.debit + totals.debit, 
					credit: opening.credit + totals.credit, 
					id:"_closing", _show: true, _style: "font-weight: bold"
			}
								
			
			if(!me.is_default("account")) {
				if(me.account_by_name[me.account].debit_or_credit == "Debit") {
					opening.debit -= opening.credit; opening.credit = 0;
					closing.debit -= closing.credit; closing.credit = 0;
				} else {
					opening.credit -= opening.debit; opening.debit = 0;
					closing.credit -= closing.debit; closing.debit = 0;
				}
				var out = [opening].concat(out).concat([totals, closing]);
			} else {
				var out = out.concat([totals]);
			}
			
			// sanitize opening / closing
			
			this.data = out;
			this.prepare_data_view(out);
		},
		get_plot_data: function() {
			var data = [];
			var me = this;
			if(me.is_default("account") || me.voucher_no) return false;
			var debit_or_credit = me.account_by_name[me.account].debit_or_credit;
			var balance = debit_or_credit=="Debit" ? me.data[0].debit : me.data[0].credit;
			data.push({
				label: me.account,
				data: [[dateutil.str_to_obj(me.from_date).getTime(), balance]]
					.concat($.map(me.data, function(col, idx) {
						if (col.posting_date) {
							var diff = (debit_or_credit == "Debit" ? 1 : -1) * (flt(col.debit) - flt(col.credit));
							balance += diff;
							return [[dateutil.str_to_obj(col.posting_date).getTime(), balance - diff],
									[dateutil.str_to_obj(col.posting_date).getTime(), balance]]
						}
						return null;
					})).concat([
						// closing
						[dateutil.str_to_obj(me.to_date).getTime(), balance]
					]),
				points: {show: true},
				lines: {show: true, fill: true},
			});
			return data;
		},
		get_plot_options: function() {
			return {
				grid: { hoverable: true, clickable: true },
				xaxis: { mode: "time", 
					min: dateutil.str_to_obj(this.from_date).getTime(),
					max: dateutil.str_to_obj(this.to_date).getTime() }
			}
		},
	});

}