fix(cardano-services): correct mapping of chain history redeemer purpose

Author: mkazlauskas

packages/cardano-services/src/ChainHistory/DbSyncChainHistory/mappers.ts

@@ -105,14 +105,30 @@ export const mapWithdrawal = (withdrawalModel: WithdrawalModel): Cardano.Withdra
 // Remove this and select the actual redeemer data from `redeemer_data` table.
 const stubRedeemerData = Buffer.from('not implemented');
 
+const mapRedeemerPurpose = (purpose: string): Cardano.RedeemerPurpose => {
+  switch (purpose) {
+    case 'cert':
+      return Cardano.RedeemerPurpose.certificate;
+    case 'mint':
+      return Cardano.RedeemerPurpose.mint;
+    case 'spend':
+      return Cardano.RedeemerPurpose.spend;
+    case 'reward':
+      return Cardano.RedeemerPurpose.withdrawal;
+    default:
+      // TODO: find what value it can be
+      return Cardano.RedeemerPurpose.delegateRepresentative;
+  }
+};
+
 export const mapRedeemer = (redeemerModel: RedeemerModel): Cardano.Redeemer => ({
   data: stubRedeemerData,
   executionUnits: {
     memory: Number(redeemerModel.unit_mem),
     steps: Number(redeemerModel.unit_steps)
   },
   index: redeemerModel.index,
-  purpose: redeemerModel.purpose as Cardano.RedeemerPurpose
+  purpose: mapRedeemerPurpose(redeemerModel.purpose)
 });
 
 export const mapCertificate = (

packages/cardano-services/src/ChainHistory/openApi.json

@@ -361,7 +361,8 @@
               "spend",
               "mint",
               "certificate",
-              "withdrawal"
+              "withdrawal",
+              "representative"
             ]
           },
           "data": {

packages/cardano-services/test/ChainHistory/DbSyncChainHistoryProvider/mappers.test.ts

@@ -294,24 +294,28 @@ describe('chain history mappers', () => {
     });
   });
   describe('mapRedeemer', () => {
-    const redeemerModel: RedeemerModel = {
+    const redeemerModel: Omit<RedeemerModel, 'purpose'> = {
       index: 1,
-      purpose: 'mint',
       script_hash: Buffer.from(hash28ByteBase16, 'hex'),
       tx_id: Buffer.from(transactionHash, 'hex'),
       unit_mem: '2000',
       unit_steps: '5000'
     };
-    test('map RedeemerModel to Cardano.Redeemer', () => {
-      const result = mappers.mapRedeemer(redeemerModel);
+    test.each([
+      ['spend', Cardano.RedeemerPurpose.spend],
+      ['mint', Cardano.RedeemerPurpose.mint],
+      ['cert', Cardano.RedeemerPurpose.certificate],
+      ['reward', Cardano.RedeemerPurpose.withdrawal]
+    ])("maps '%p' redeemer", (dbSyncRedeemerPurpose, sdkRedeemerPurpose) => {
+      const result = mappers.mapRedeemer({ ...redeemerModel, purpose: dbSyncRedeemerPurpose });
       expect(result).toEqual<Cardano.Redeemer>({
         data: Buffer.from('not implemented'),
         executionUnits: {
           memory: 2000,
           steps: 5000
         },
         index: 1,
-        purpose: Cardano.RedeemerPurpose.mint
+        purpose: sdkRedeemerPurpose
       });
     });
   });