Resolve #3

iso8583.js

@@ -59,6 +59,33 @@ class ISO8583 {
   }
   get(name, value) {}
   wrapMsg(mti = '', opts) {
+    /**
+     * Define the MTI with name as key
+     */
+    const MTIBit = new Map([
+      ['AUTHORIZATION_REQUEST', '0100' ],
+      ['AUTHORIZATION_RESPONSE', '0110'],
+      ['AUTHORIZATION_ADVICE', '0120'],
+      ['AUTHORIZATION_ADVICE_REPEAT', '0121'],
+      ['ISSUER_RESPONSE_TO_AUTHORIZATION_ADVICE', '0130'],
+      ['ACQUIRER_FINANCIAL_REQUEST', '0200'],
+      ['ISSUER_RESPONSE_TO_FINANCIAL_REQUEST', '0210'],
+      ['ACQUIRER_FINANCIAL_ADVICE', '0220'],
+      ['ACQUIRER_FINANCIAL_ADVICE_REPEAT', '0221'],
+      ['CONFIRMATION_OF_RECEIPT_OF_FINANCIAL_ADVICE', '0230'],
+      ['BATCH_UPLOAD', '0320'],
+      ['BATCH_UPLOAD_RESPONSE', '0330'],
+      ['ACQUIRER_REVERSAL_REQUEST', '0400'],
+      ['ACQUIRER_REVERSAL_ADVICE', '0420'],
+      ['ACQUIRER_REVERSAL_ADVICE_RESPONSE', '0430'],
+      ['BATCH_SETTLEMENT_RESPONSE', '0510'],
+      ['NETWORK_MANAGEMENT_REQUEST', '0800'],
+      ['NETWORK_MANAGEMENT_RESPONSE', '0810'],
+      ['NETWORK_MANAGEMENT_ADVICE', '0820']
+    ])
+
+    mti = MTIBit.get(mti) || mti
+
     this._string = '';
     let bitmap = [];
     let total_length = 0;
@@ -89,6 +116,30 @@ class ISO8583 {
 
   unWrapMsg(hex, opts = {output : 'array'}) {
     const { output = 'array', validate = false } = opts;
+    /**
+     * Define the MTI with BIT as key
+     */
+    const MTIName = new Map([
+      ['0100', 'AUTHORIZATION_REQUEST' ],
+      ['0110', 'AUTHORIZATION_RESPONSE'],
+      ['0120', 'AUTHORIZATION_ADVICE'],
+      ['0121', 'AUTHORIZATION_ADVICE_REPEAT'],
+      ['0130', 'ISSUER_RESPONSE_TO_AUTHORIZATION_ADVICE'],
+      ['0200', 'ACQUIRER_FINANCIAL_REQUEST'],
+      ['0210', 'ISSUER_RESPONSE_TO_FINANCIAL_REQUEST'],
+      ['0220', 'ACQUIRER_FINANCIAL_ADVICE'],
+      ['0221', 'ACQUIRER_FINANCIAL_ADVICE_REPEAT'],
+      ['0230', 'CONFIRMATION_OF_RECEIPT_OF_FINANCIAL_ADVICE'],
+      ['0320', 'BATCH_UPLOAD'],
+      ['0330', 'BATCH_UPLOAD_RESPONSE'],
+      ['0400', 'ACQUIRER_REVERSAL_REQUEST'],
+      ['0420', 'ACQUIRER_REVERSAL_ADVICE'],
+      ['0430', 'ACQUIRER_REVERSAL_ADVICE_RESPONSE'],
+      ['0510', 'BATCH_SETTLEMENT_RESPONSE'],
+      ['0800', 'NETWORK_MANAGEMENT_REQUEST'],
+      ['0810', 'NETWORK_MANAGEMENT_RESPONSE'],
+      ['0820', 'NETWORK_MANAGEMENT_ADVICE'],
+    ])
 
     let _Temp_Bitmap = new Map([
       ['TYPE', 'NOT GIVEN VALUE']
@@ -130,6 +181,7 @@ class ISO8583 {
 
     _Bitmap.set('PRIMARY_BITMAP', hex.substring(0, 16));
     _Bitmap.set('TYPE', _Temp_Bitmap.get('TYPE'))
+    _Bitmap.set('TYPE_NAME', MTIName.get(_Bitmap.get('TYPE')))
 
     hex = hex.substring(16, hex.length + 16);