Merge pull request #340 from oceanprotocol/feature/ddo-pricing

update DDO

src/ddo/DDO.ts

@@ -4,6 +4,7 @@ import { Proof } from './interfaces/Proof'
 import { PublicKey } from './interfaces/PublicKey'
 import { Service, ServiceType } from './interfaces/Service'
 import Web3Provider from '../datatokens/Web3Provider'
+import { BestPrice } from './interfaces/BestPrice'
 /**
  * DID Descriptor Object.
  * Contains all the data related to an asset.
@@ -51,6 +52,8 @@ export class DDO {
 
   public proof: Proof
 
+  public price: BestPrice
+
   public constructor(ddo: Partial<DDO> = {}) {
     Object.assign(this, ddo, {
       created: (ddo && ddo.created) || new Date().toISOString().replace(/\.[0-9]{3}/, '')

src/ddo/interfaces/BestPrice.ts

@@ -0,0 +1,7 @@
+export interface BestPrice {
+  type: 'pool' | 'exchange'
+  address: string
+  value: number
+  ocean?: number
+  datatoken?: number
+}

src/ddo/interfaces/index.ts

@@ -1,5 +1,6 @@
 export * from './AdditionalInformation'
 export * from './Authentication'
+export * from './BestPrice'
 export * from './Curation'
 export * from './EditableMetadata'
 export * from './EditableMetadataLinks'