/* Copyright 2018 GRAP - Sylvain LE GAL
   Copyright 2018 Tecnativa - David Vidal
   Copyright 2019 Druidoo - Ivan Todorovich
   License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl). */

odoo.define('pos_order_mgmt.widgets', function (require) {
    "use strict";

    var core = require('web.core');
    var _t = core._t;
    var PosBaseWidget = require('point_of_sale.BaseWidget');
    var screens = require('point_of_sale.screens');
    var gui = require('point_of_sale.gui');
    var chrome = require('point_of_sale.chrome');
    var models = require('point_of_sale.models');

    var QWeb = core.qweb;
    var ScreenWidget = screens.ScreenWidget;
    var DomCache = screens.DomCache;

    screens.ReceiptScreenWidget.include({
        render_receipt: function () {
            if (!this.pos.reloaded_order) {
                return this._super();
            }
            var order = this.pos.reloaded_order;
            this.$('.pos-receipt-container').html(QWeb.render('PosTicket', {
                widget: this,
                pos: this.pos,
                order: order,
                receipt: order.export_for_printing(),
                orderlines: order.get_orderlines(),
                paymentlines: order.get_paymentlines(),
            }));
            this.pos.from_loaded_order = true;
        },
        click_next: function () {
            if (!this.pos.from_loaded_order) {
                return this._super();
            }
            this.pos.from_loaded_order = false;
            // When reprinting a loaded order we temporarily set it as the
            // active one. When we get out from the printing screen, we set
            // it back to the one that was active
            if (this.pos.current_order) {
                this.pos.set_order(this.pos.current_order);
                this.pos.current_order = false;
            }
            return this.gui.show_screen(this.gui.startup_screen);
        },
    });

    var OrderListScreenWidget = ScreenWidget.extend({
        template: 'OrderListScreenWidget',

        init: function (parent, options) {
            this._super(parent, options);
            this.order_cache = new DomCache();
            this.orders = [];
            this.unknown_products = [];
            this.search_query = false;
            this.perform_search();
        },

        auto_back: true,

        show: function () {
            var self = this;
            var previous_screen = false;
            if (this.pos.get_order()) {
                previous_screen = this.pos.get_order().get_screen_data(
                    'previous-screen');
            }
            if (previous_screen === 'receipt') {
                this.gui.screen_instances.receipt.click_next();
                this.gui.show_screen('orderlist');
            }
            this._super();
            this.renderElement();
            this.old_order = this.pos.get_order();
            this.$('.back').click(function () {
                return self.gui.show_screen(self.gui.startup_screen);
            });

            if (this.pos.config.iface_vkeyboard &&
                this.chrome.widget.keyboard) {
                this.chrome.widget.keyboard.connect(
                    this.$('.searchbox input'));
            }

            var search_timeout = null;
            this.$('.searchbox input').on('keyup', function () {
                self.search_query = this.value;
                clearTimeout(search_timeout);
                search_timeout = setTimeout(function () {
                    self.perform_search();
                }, 70);
            });

            this.$('.searchbox .search-clear').click(function () {
                self.clear_search();
            });

            this.perform_search();
        },

        render_list: function () {
            var self = this;
            var orders = this.orders;
            var contents = this.$el[0].querySelector('.order-list-contents');
            contents.innerHTML = "";
            for (
                var i = 0, len = Math.min(orders.length, 1000); i < len; i++
            ) {
                var order = orders[i];
                var orderline = this.order_cache.get_node(
                    order.id || order.uid);
                if (!orderline) {
                    var orderline_html = QWeb.render('OrderLine', {
                        widget: this,
                        order: order,
                    });
                    orderline = document.createElement('tbody');
                    orderline.innerHTML = orderline_html;
                    orderline = orderline.childNodes[1];
                    this.order_cache.cache_node(
                        order.id || order.uid, orderline);
                }
                if (order === this.old_order) {
                    orderline.classList.add('highlight');
                } else {
                    orderline.classList.remove('highlight');
                }
                contents.appendChild(orderline);
            }
            // FIXME: Everytime the list is rendered we need to reassing the
            // button events.
            this.$('.order-list-return').off('click');
            this.$('.order-list-reprint').off('click');
            this.$('.order-list-copy').off('click');
            this.$('.order-list-reprint').click(function (event) {
                self.order_list_actions(event, 'print');
            });
            this.$('.order-list-copy').click(function (event) {
                self.order_list_actions(event, 'copy');
            });
            this.$('.order-list-return').click(function (event) {
                self.order_list_actions(event, 'return');
            });
        },

        order_list_actions: function (event, action) {
            var self = this;
            var dataset = event.target.parentNode.dataset;
            self.load_order_data(parseInt(dataset.orderId, 10))
                .then(function (order_data) {
                    self.order_action(order_data, action);
                });
        },

        order_action: function (order_data, action) {
            if (this.old_order !== null) {
                this.gui.back();
            }
            var order = this.load_order_from_data(order_data, action);
            if (!order) {
                // The load of the order failed. (products not found, ...
                // We cancel the action
                return;
            }
            this['action_' + action](order_data, order);
        },

        action_print: function (order_data, order) {
            // We store temporarily the current order so we can safely compute
            // taxes based on fiscal position
            this.pos.current_order = this.pos.get_order();

            this.pos.set_order(order);

            this.pos.reloaded_order = order;
            var skip_screen_state = this.pos.config.iface_print_skip_screen;
            // Disable temporarily skip screen if set
            this.pos.config.iface_print_skip_screen = false;
            this.gui.show_screen('receipt');
            this.pos.reloaded_order = false;
            // Set skip screen to whatever previous state
            this.pos.config.iface_print_skip_screen = skip_screen_state;

            // If it's invoiced, we also print the invoice
            if (order_data.to_invoice) {
                this.pos.chrome.do_action('point_of_sale.pos_invoice_report', {
                    additional_context: { active_ids: [order_data.id] }
                })
            }

            // Destroy the order so it's removed from localStorage
            // Otherwise it will stay there and reappear on browser refresh
            order.destroy();
        },

        action_copy: function (order_data, order) {
            order.trigger('change');
            this.pos.get('orders').add(order);
            this.pos.set('selectedOrder', order);
            return order;
        },

        action_return: function (order_data, order) {
            order.trigger('change');
            this.pos.get('orders').add(order);
            this.pos.set('selectedOrder', order);
            return order;
        },

        _prepare_order_from_order_data: function (order_data, action) {
            var self = this;
            var order = new models.Order({}, {
                pos: this.pos,
            });

            // Get Customer
            if (order_data.partner_id) {
                order.set_client(
                    this.pos.db.get_partner_by_id(order_data.partner_id));
            }

            // Get fiscal position
            if (order_data.fiscal_position && this.pos.fiscal_positions) {
                var fiscal_positions = this.pos.fiscal_positions;
                order.fiscal_position = fiscal_positions.filter(function (p) {
                    return p.id === order_data.fiscal_position;
                })[0];
                order.trigger('change');
            }

            // Get order lines
            self._prepare_orderlines_from_order_data(
                order, order_data, action);

            // Get Name
            if (['print'].indexOf(action) !== -1) {
                order.name = order_data.pos_reference;
            } else if (['return'].indexOf(action) !== -1) {
                order.name = _t("Refund ") + order.uid;
            }

            // Get to invoice
            if (['return', 'copy'].indexOf(action) !== -1) {
                // If previous order was invoiced, we need a refund too
                order.set_to_invoice(order_data.to_invoice);
            }

            // Get returned Order
            if (['print'].indexOf(action) !== -1) {
                // Get the same value as the original
                order.returned_order_id = order_data.returned_order_id;
                order.returned_order_reference =
                order_data.returned_order_reference;
            } else if (['return'].indexOf(action) !== -1) {
                order.returned_order_id = order_data.id;
                order.returned_order_reference = order_data.pos_reference;
            }

            // Get Date
            if (['print'].indexOf(action) !== -1) {
                order.formatted_validation_date =
                moment(order_data.date_order).format('YYYY-MM-DD HH:mm:ss');
            }

            // Get Payment lines
            if (['print'].indexOf(action) !== -1) {
                var paymentLines = order_data.statement_ids || [];
                _.each(paymentLines, function (paymentLine) {
                    var line = paymentLine;
                    // In case of local data
                    if (line.length === 3) {
                        line = line[2];
                    }
                    _.each(self.pos.cashregisters, function (cashregister) {
                        if (cashregister.journal.id === line.journal_id) {
                            if (line.amount > 0) {
                                // If it is not change
                                order.add_paymentline(cashregister);
                                order.selected_paymentline.set_amount(
                                    line.amount);
                            }
                        }
                    });
                });
            }
            return order;
        },

        _prepare_orderlines_from_order_data: function (
            order, order_data, action) {
            var orderLines = order_data.line_ids || order_data.lines || [];

            var self = this;
            _.each(orderLines, function (orderLine) {
                var line = orderLine;
                // In case of local data
                if (line.length === 3) {
                    line = line[2];
                }
                var product = self.pos.db.get_product_by_id(line.product_id);
                // Check if product are available in pos
                if (_.isUndefined(product)) {
                    self.unknown_products.push(String(line.product_id));
                } else {
                    // Create a new order line
                    order.add_product(product,
                        self._prepare_product_options_from_orderline_data(
                            order, line, action));
                    // Restore lot information.
                    if (['return'].indexOf(action) !== -1) {
                        var orderline = order.get_selected_orderline()
                        if (orderline.pack_lot_lines) {
                            _.each(orderline.return_pack_lot_names, function(lot_name) {
                                orderline.pack_lot_lines.add(new models.Packlotline(
                                    {'lot_name': lot_name}, {'order_line': orderline}
                                ));
                            })
                            orderline.trigger('change', orderline);
                        }
                    }
                }
            });
        },

        _prepare_product_options_from_orderline_data: function (
            order, line, action) {

            var qty = line.qty;
            if (['return'].indexOf(action) !== -1) {
                // Invert line quantities
                qty *= -1;
            }
            return {
                price: line.price_unit,
                quantity: qty,
                discount: line.discount,
                merge: false,
                extras: {
                    return_pack_lot_names: line.pack_lot_names,
                },
            }

        },

        load_order_data: function (order_id) {
            var self = this;
            return this._rpc({
                model: 'pos.order',
                method: 'load_done_order_for_pos',
                args: [order_id],
            }).fail(function (error) {
                if (parseInt(error.code, 10) === 200) {
                    // Business Logic Error, not a connection problem
                    self.gui.show_popup(
                        'error-traceback', {
                            'title': error.data.message,
                            'body': error.data.debug,
                        });
                } else {
                    self.gui.show_popup('error', {
                        'title': _t('Connection error'),
                        'body': _t(
                            'Can not execute this action because the POS' +
                            ' is currently offline'),
                    });
                }
            });
        },

        load_order_from_data: function (order_data, action) {
            var self = this;
            this.unknown_products = [];
            var order = self._prepare_order_from_order_data(
                order_data, action);
            // Forbid POS Order loading if some products are unknown
            if (self.unknown_products.length > 0) {
                self.gui.show_popup('error-traceback', {
                    'title': _t('Unknown Products'),
                    'body': _t('Unable to load some order lines because the ' +
                        'products are not available in the POS cache.\n\n' +
                        'Please check that lines :\n\n  * ') +
                    self.unknown_products.join("; \n  *"),
                });
                return false;
            }
            return order;
        },

        // Search Part
        search_done_orders: function (query) {
            var self = this;
            return this._rpc({
                model: 'pos.order',
                method: 'search_done_orders_for_pos',
                args: [query || '', this.pos.pos_session.id],
            }).then(function (result) {
                self.orders = result;
                // Get the date in local time
                _.each(self.orders, function (order) {
                    if (order.date_order) {
                        order.date_order = moment.utc(order.date_order)
                            .local().format('YYYY-MM-DD HH:mm:ss');
                    }
                });
            }).fail(function (error, event) {
                if (parseInt(error.code, 10) === 200) {
                    // Business Logic Error, not a connection problem
                    self.gui.show_popup(
                        'error-traceback', {
                            'title': error.data.message,
                            'body': error.data.debug,
                        }
                    );
                } else {
                    self.gui.show_popup('error', {
                        'title': _t('Connection error'),
                        'body': _t(
                            'Can not execute this action because the POS' +
                            ' is currently offline'),
                    });
                }
                event.preventDefault();
            });
        },

        perform_search: function () {
            var self = this;
            return this.search_done_orders(self.search_query)
                .done(function () {
                    self.render_list();
                });
        },

        clear_search: function () {
            var self = this;
            self.$('.searchbox input')[0].value = '';
            self.$('.searchbox input').focus();
            self.search_query = false;
            self.perform_search();
        },
    });

    gui.define_screen({
        name: 'orderlist',
        widget: OrderListScreenWidget,
    });

    var ListOrderButtonWidget = PosBaseWidget.extend({
        template: 'ListOrderButtonWidget',
        init: function (parent, options) {
            var opts = options || {};
            this._super(parent, opts);
            this.action = opts.action;
            this.label = opts.label;
        },

        button_click: function () {
            this.gui.show_screen('orderlist');
        },

        renderElement: function () {
            var self = this;
            this._super();
            this.$el.click(function () {
                self.button_click();
            });
        },
    });

    var widgets = chrome.Chrome.prototype.widgets;
    widgets.push({
        'name': 'list_orders',
        'widget': ListOrderButtonWidget,
        'prepend': '.pos-rightheader',
        'args': {
            'label': 'All Orders',
        },
    });

    return {
        ListOrderButtonWidget: ListOrderButtonWidget,
        OrderListScreenWidget: OrderListScreenWidget,
    };

});