count readme, improve error messages

Author: alexnuttall

lambdas/backend-api/README.md

@@ -152,6 +152,14 @@ curl --location "${APIG_STAGE}/v1/routing-configurations" \
 --header "Authorization: $SANDBOX_TOKEN"
 ```
 
+### GET - /v1/routing-configurations/count - Count routing configurations
+
+```bash
+curl --location "${APIG_STAGE}/v1/routing-configurations/count" \
+--header 'Accept: application/json' \
+--header "Authorization: $SANDBOX_TOKEN"
+```
+
 ### POST - /v1/routing-configuration - Create a routing configuration
 
 ```bash

lambdas/backend-api/src/__tests__/templates/infra/routing-config-repository/repository.test.ts

@@ -307,7 +307,7 @@ describe('RoutingConfigRepository', () => {
           }),
           errorMeta: {
             code: 500,
-            description: 'Error retrieving Routing Config',
+            description: 'Error parsing submitted Routing Config',
           },
         },
       });
@@ -552,7 +552,7 @@ describe('RoutingConfigRepository', () => {
           }),
           errorMeta: {
             code: 500,
-            description: 'Error retrieving Routing Config',
+            description: 'Error parsing updated Routing Config',
           },
         },
       });

lambdas/backend-api/src/templates/infra/routing-config-repository/repository.ts

@@ -98,7 +98,7 @@ export class RoutingConfigRepository {
       if (!parsed.success) {
         return failure(
           ErrorCase.INTERNAL,
-          'Error retrieving Routing Config',
+          'Error parsing updated Routing Config',
           parsed.error
         );
       }
@@ -132,7 +132,7 @@ export class RoutingConfigRepository {
       if (!parsed.success) {
         return failure(
           ErrorCase.INTERNAL,
-          'Error retrieving Routing Config',
+          'Error parsing submitted Routing Config',
           parsed.error
         );
       }