// Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
// License: GNU General Public License v3. See license.txt

erpnext.payments = erpnext.stock.StockController.extend({
	make_payment: function() {
		var me = this;

		this.dialog = new frappe.ui.Dialog({
			title: 'Payment'
		});

		this.dialog.show();
		this.$body = this.dialog.body;
		this.set_payment_primary_action();
		this.make_keyboard();
		this.select_text();
	},

	select_text() {
		$(this.$body).find('.form-control').click(function() {
			$(this).select();
		});
	},

	set_payment_primary_action: function() {
		var me = this;

		this.dialog.set_primary_action(__("Submit"), function() {
			// Allow no ZERO payment
			$.each(me.frm.doc.payments, function (index, data) {
				if (data.amount != 0) {
					me.dialog.hide();
					me.submit_invoice();
					return;
				}
			});
		})
	},

	make_keyboard: function() {
		var me = this;
		$(this.$body).empty();
		$(this.$body).html(frappe.render_template('pos_payment', this.frm.doc))
		this.show_payment_details();
		this.bind_keyboard_event();
		this.clear_amount();
	},

	make_multimode_payment: function() {
		var me = this;

		if (this.frm.doc.change_amount > 0) {
			me.payment_val = me.doc.outstanding_amount;
		}

		this.payments = frappe.model.add_child(this.frm.doc, 'Multi Mode Payment', "payments");
		this.payments.mode_of_payment = this.dialog.fields_dict.mode_of_payment.get_value();
		this.payments.amount = flt(this.payment_val);
	},

	show_payment_details: function() {
		var me = this;
		var multimode_payments = $(this.$body).find('.multimode-payments').empty();
		if (this.frm.doc.payments.length) {
			$.each(this.frm.doc.payments, function(index, data) {
				$(frappe.render_template('payment_details', {
					mode_of_payment: data.mode_of_payment,
					amount: data.amount,
					idx: data.idx,
					currency: me.frm.doc.currency,
					type: data.type
				})).appendTo(multimode_payments)

				if (data.type == 'Cash' && data.amount == me.frm.doc.paid_amount) {
					me.idx = data.idx;
					me.selected_mode = $(me.$body).find(repl("input[idx='%(idx)s']",{'idx': me.idx}));
					me.highlight_selected_row();
					me.bind_amount_change_event();
				}
			})
		}else{
			$("<p>No payment mode selected in pos profile</p>").appendTo(multimode_payments)
		}
	},

	set_outstanding_amount: function() {
		this.selected_mode = $(this.$body).find(repl("input[idx='%(idx)s']",{'idx': this.idx}));
		this.highlight_selected_row();
		this.payment_val = 0.0;
		if (this.frm.doc.outstanding_amount > 0 && flt(this.selected_mode.val()) == 0.0) {
			//When user first time click on row
			this.payment_val = flt(this.frm.doc.outstanding_amount / this.frm.doc.conversion_rate, precision("outstanding_amount"))
			this.selected_mode.val(format_currency(this.payment_val, this.frm.doc.currency));
			this.update_payment_amount();
		} else if (flt(this.selected_mode.val()) > 0) {
			//If user click on existing row which has value
			this.payment_val = flt(this.selected_mode.val());
		}
		this.selected_mode.select()
		this.bind_amount_change_event();
	},

	bind_keyboard_event() {
		this.payment_val = '';
		this.bind_form_control_event();
		this.bind_numeric_keys_event();
	},

	bind_form_control_event: function() {
		var me = this;
		$(this.$body).find('.pos-payment-row').click(function() {
			me.idx = $(this).attr("idx");
			me.set_outstanding_amount();
		});

		$(this.$body).find('.form-control').click(function() {
			me.idx = $(this).attr("idx");
			me.set_outstanding_amount();
			me.update_paid_amount(true);
		});

		$(this.$body).find('.write_off_amount').change(function() {
			me.write_off_amount(flt($(this).val()), precision("write_off_amount"));
		});

		$(this.$body).find('.change_amount').change(function() {
			me.change_amount(flt($(this).val()), precision("change_amount"));
		});
	},

	highlight_selected_row() {
		var selected_row = $(this.$body).find(repl(".pos-payment-row[idx='%(idx)s']", {'idx': this.idx}));
		$(this.$body).find('.pos-payment-row').removeClass('selected-payment-mode');
		selected_row.addClass('selected-payment-mode');
		$(this.$body).find('.amount').attr('disabled', true);
		this.selected_mode.attr('disabled', false);
	},

	bind_numeric_keys_event: function() {
		var me = this;
		$(this.$body).find('.pos-keyboard-key').click(function(){
			me.payment_val += $(this).text();
			me.selected_mode.val(format_currency(me.payment_val, me.frm.doc.currency));
			me.idx = me.selected_mode.attr("idx");
			me.update_paid_amount();
		});

		$(this.$body).find('.delete-btn').click(function() {
			me.payment_val =  cstr(flt(me.selected_mode.val())).slice(0, -1);
			me.selected_mode.val(format_currency(me.payment_val, me.frm.doc.currency));
			me.idx = me.selected_mode.attr("idx");
			me.update_paid_amount();
		})

	},

	bind_amount_change_event() {
		var me = this;
		this.selected_mode.change(function() {
			me.payment_val =  flt($(this).val()) || 0.0;
			me.selected_mode.val(format_currency(me.payment_val, me.frm.doc.currency));
			me.idx = me.selected_mode.attr("idx");
			me.update_payment_amount();
		});
	},

	clear_amount: function() {
		var me = this;
		$(this.$body).find('.clr').click(function(e) {
			e.stopPropagation();
			me.idx = $(this).attr("idx");
			me.selected_mode = $(me.$body).find(repl("input[idx='%(idx)s']",{'idx': me.idx}));
			me.payment_val = 0.0;
			me.selected_mode.val(0.0);
			me.highlight_selected_row();
			me.update_payment_amount();
		});
	},

	write_off_amount(write_off_amount) {
		this.frm.doc.write_off_amount = flt(write_off_amount, precision("write_off_amount"));
		this.frm.doc.base_write_off_amount = flt(this.frm.doc.write_off_amount * this.frm.doc.conversion_rate,
			precision("base_write_off_amount"));
		this.calculate_outstanding_amount(false);
		this.show_amounts();
	},

	change_amount: function(change_amount) {
		var me = this;

		this.frm.doc.change_amount = flt(change_amount, precision("change_amount"));
		this.calculate_write_off_amount();
		this.show_amounts();
	},

	update_paid_amount: function(update_write_off) {
		var me = this;
		if (in_list(['change_amount', 'write_off_amount'], this.idx)) {
			var value = me.selected_mode.val();
			if (me.idx == 'change_amount') {
				me.change_amount(value);
			} else {
				if(flt(value) == 0 && update_write_off && me.frm.doc.outstanding_amount > 0) {
					value = flt(me.frm.doc.outstanding_amount / me.frm.doc.conversion_rate, precision(me.idx));
				}
				me.write_off_amount(value);
			}
		} else {
			this.update_payment_amount();
		}
	},

	update_payment_amount: function() {
		var me = this;

		$.each(this.frm.doc.payments, function(index, data) {
			if (cint(me.idx) == cint(data.idx)) {
				data.amount = flt(me.selected_mode.val(), 2);
			}
		})

		this.calculate_outstanding_amount(false);
		this.show_amounts();
	},

	show_amounts: function() {
		var me = this;
		$(this.$body).find(".write_off_amount").val(format_currency(this.frm.doc.write_off_amount, this.frm.doc.currency));
		$(this.$body).find('.paid_amount').text(format_currency(this.frm.doc.paid_amount, this.frm.doc.currency));
		$(this.$body).find('.change_amount').val(format_currency(this.frm.doc.change_amount, this.frm.doc.currency));
		$(this.$body).find('.outstanding_amount').text(format_currency(this.frm.doc.outstanding_amount, frappe.get_doc(":Company", this.frm.doc.company).default_currency));
		this.update_invoice();
	}
})