fix: After dropping DB agent would throw exception as we removed the …

…data source

packages/agent-config/src/dataSources.ts

@@ -126,14 +126,19 @@ export const getDbConnection = async (
   return DataSources.singleInstance().getDbConnection(connectionName)
 }
 
-export const dropDatabase = async (dbName: string): Promise<void> => {
+export const dropDatabase = async (dbName: string, opts?: {removeDataSource?: boolean}): Promise<void> => {
+  const {removeDataSource = false} = {...opts}
   if (!DataSources.singleInstance().has(dbName)) {
     return Promise.reject(Error(`No database present with name: ${dbName}`))
   }
 
   const connection: DataSource = await getDbConnection(dbName)
   await connection.dropDatabase()
-  DataSources.singleInstance().delete(dbName)
+  if (removeDataSource) {
+    DataSources.singleInstance().delete(dbName)
+  } else if (!connection.isInitialized) {
+      await connection.initialize()
+  }
 }
 
 /**

packages/ssi-types/src/mapper/credential-constraints.ts

@@ -0,0 +1,19 @@
+import { CredentialFormat, PresentationFormat } from '../types'
+
+export type CredentialEncoding = 'json' /*includes json-ld*/ | 'jwt' | 'cbor'
+
+export type IssuerAttributeName = 'iss' | 'issuer' | 'issuerAuth'
+export type SubjectAttributeName = 'subject' | 'id' | 'deviceMac' | 'TODO'
+export type TypeAttributeName = 'type' | 'vct'
+
+export type DataModel = 'W3C_VCDM' | 'IETF_SD_JWT' | 'ISO_MSO_MDOC'
+
+export interface CredentialConstraint {
+  credentialFormat: CredentialFormat
+  presentationFormat: PresentationFormat
+  maxSignatures: number
+  encoding: CredentialEncoding
+  dataModel: DataModel
+  typeAttribute?: TypeAttributeName // optional since mdocs use namespace maps without an explicit type attribute
+  issuerAttributes: [IssuerAttributeName]
+}