function xmlContent(content){
  if(content != null){
    return { "$t" : content };
  }
  return null;
}

export class RetailInvoiceConverter {
  shopify2Wintersteiger(data){
    console.log(data);
    const invoices = data.map(this.populateWintersteigerInovice.bind(this));

    const xmlData = {
      invoices : {
        invoice : invoices
      }
    }

    return xmlData;
  }

  wintersteiger2Shopify(data){
    const jsonData = data.map(function(orderData){
        return orderData;
    });
    return jsonData;
  }

  populateWintersteigerInovice(order) {

    var tax1amount = order.total_tax;
    var grand_total = order.total_price;

    var self = this;
    const invoiceitem = order.line_items.filter(this.filterRetailItems).map(function(line_item){
      grand_total = parseFloat(grand_total) + parseFloat(line_item.price);
      return self.populateWintersteigerInoviceItem(line_item);
    });

    let marketingpermission = null;
    if(order.customer && order.customer.marketing_opt_in_level == "confirmed_opt_in"){
      marketingpermission = { "$t" : "yes" };
    }

    const invoice = {
      invoiceid : { "$t" : order.id },
      invoice_number: { "$t" : order.name.replace("#", "") },
      created_at : { "$t" : order.created_at },
      currency : { "$t" : order.currency },
      custextid : { "$t" :  order.customer && order.customer.id },
      custextidorigin : { "$t" : "Shopify" },
      firstname : { "$t" :  order.customer && order.customer.first_name },
      lastname : { "$t" :  order.customer && order.customer.last_name },
      address1 : { "$t" : order.shipping_address && order.shipping_address.address1 },
      address2 : order.shipping_address && order.shipping_address.address2 ?
        {"$t":order.shipping_address.address2}
        :null,
      zip : { "$t" : order.shipping_address && order.shipping_address.zip },
      city : { "$t" : order.shipping_address && order.shipping_address.city },
      countryisoa2 : { "$t" : order.shipping_address && order.shipping_address.country_code },
      countryname : { "$t" : order.shipping_address && order.shipping_address.country },
      er_regioncode : { "$t" : order.shipping_address && order.shipping_address.province_code },
      phone : order.shipping_address && order.shipping_address.phone ?
        {"$t":order.shipping_address.phone}
        :null,
      email : { "$t" : order.email },
      marketingpermission : marketingpermission,
      tax1amount : { "$t" : tax1amount },
      grand_total : { "$t" : grand_total },
      invoiceitem : invoiceitem
    }

    return invoice
  }

  filterRetailItems(line_item){
    console.log(line_item);
    return true;
  }

  populateWintersteigerInoviceItem(line_item){
    console.log(line_item);
    const invoiceitem = {
      invoiceitemid : { "$t" : line_item.id },
      articlecode : { "$t" : line_item.sku },
      articlename : { "$t" : line_item.name },
      quantity : { "$t" : line_item.quantity },
      // indicating that this item is taxable or that the totals in this item inlcude tax
      totals_include_tax : { "$t" : line_item.taxable },
      total_listprice : { "$t" : line_item.price },
      total_price_alteration : { "$t" : line_item.total_discount },
      total_amount : { "$t" : line_item.price - line_item.total_discount }
      // precentage of total tax or tax rate?
      // tax1percent : { //calculate average rate from taxlines? }
    };
    return invoiceitem;
  }

}




// <?xml version="1.0"?>
// <invoices xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
//   <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="" xmlns:prodata="urn:schemas-progress-com:xml-prodata:0001">
//     <xsd:element name="invoices" prodata:proDataSet="true" prodata:datasetName="dsinvoicedata">
//       <xsd:complexType>
//         <xsd:sequence>
//           <xsd:element name="invoice" minOccurs="0" maxOccurs="unbounded" prodata:tableName="ttInvoice">
//             <xsd:complexType>
//               <xsd:sequence>
//                 <xsd:element name="invoiceid" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="invoice_number" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="created_at" type="xsd:dateTime" nillable="true" minOccurs="0" prodata:dataType="prodata:dateTime" prodata:initial="prodata:unknown"/>
//                 <xsd:element name="er_branchid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                 <xsd:element name="er_workstationid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                 <xsd:element name="er_cashdeskid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                 <xsd:element name="currency" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="er_userid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                 <xsd:element name="tax1amount" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                 <xsd:element name="tax2amount" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                 <xsd:element name="grand_total" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                 <xsd:element name="er_custid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                 <xsd:element name="er_custcode" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="custcard" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="custextid" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="custextidorigin" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="firstname" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="lastname" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="address1" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="address2" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="zip" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="city" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="countryisoa2" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="countryname" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="er_regioncode" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="er_genderid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                 <xsd:element name="gendername" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="er_titleid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                 <xsd:element name="titlename" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="dateofbirth" type="xsd:date" nillable="true" minOccurs="0" prodata:initial="prodata:unknown"/>
//                 <xsd:element name="telephone" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="mobile" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="fax" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="email" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="remark" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="languagecode" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                 <xsd:element name="marketingpermission" type="xsd:boolean" nillable="true" minOccurs="0" prodata:initial="prodata:unknown"/>
//                 <xsd:element name="regularcustomer" type="xsd:boolean" nillable="true" minOccurs="0" prodata:initial="prodata:unknown"/>
//                 <xsd:element name="invoiceitem" minOccurs="0" maxOccurs="unbounded" prodata:tableName="ttInvoiceItem">
//                   <xsd:complexType>
//                     <xsd:sequence>
//                       <xsd:element name="invoiceitemid" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                       <xsd:element name="line_number" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                       <xsd:element name="articlecode" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                       <xsd:element name="articlename" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                       <xsd:element name="quantity" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                       <xsd:element name="duration" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                       <xsd:element name="totals_include_tax" type="xsd:boolean" nillable="true" minOccurs="0" default="false"/>
//                       <xsd:element name="total_listprice" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                       <xsd:element name="total_price_alteration" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                       <xsd:element name="total_amount" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                       <xsd:element name="tax1percent" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                       <xsd:element name="tax2percent" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                       <xsd:element name="created_at" type="xsd:dateTime" nillable="true" minOccurs="0" prodata:dataType="prodata:dateTime" prodata:initial="prodata:unknown"/>
//                       <xsd:element name="er_userid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                       <xsd:element name="er_workstationid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                     </xsd:sequence>
//                   </xsd:complexType>
//                 </xsd:element>
//                 <xsd:element name="payment" minOccurs="0" maxOccurs="unbounded" prodata:tableName="ttpayment">
//                   <xsd:complexType>
//                     <xsd:sequence>
//                       <xsd:element name="er_paymenttypeid" type="xsd:int" nillable="true" minOccurs="0" default="0"/>
//                       <xsd:element name="paymenttypeextid" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                       <xsd:element name="paymenttypename" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                       <xsd:element name="amount" type="xsd:decimal" nillable="true" minOccurs="0" default="0.0"/>
//                       <xsd:element name="cardpayment" type="xsd:boolean" nillable="true" minOccurs="0" default="false"/>
//                       <xsd:element name="paymentref" type="xsd:string" nillable="true" minOccurs="0" default=""/>
//                     </xsd:sequence>
//                   </xsd:complexType>
//                 </xsd:element>
//               </xsd:sequence>
//             </xsd:complexType>
//           </xsd:element>
//         </xsd:sequence>
//       </xsd:complexType>
//     </xsd:element>
//     <xsd:annotation>
//       <xsd:appinfo>
//         <prodata:relation name="ttInvoiceItem" prodata:nested="true" prodata:parent="ttInvoice" prodata:child="ttInvoiceItem" prodata:relationFields="invoiceid,invoiceid"/>
//         <prodata:relation name="ttpayment" prodata:nested="true" prodata:parent="ttInvoice" prodata:child="ttpayment" prodata:relationFields="invoiceid,invoiceid"/>
//       </xsd:appinfo>
//     </xsd:annotation>
//   </xsd:schema>
// </invoices>