fixed price

example/src/App.tsx

@@ -7,8 +7,7 @@ import { Config, ConfigHelper } from '@oceanprotocol/lib'
 import { AllDdos } from './AllDdos'
 import { ConsumeDdo } from './ConsumeDdo'
 
-import WalletConnectProvider from '@walletconnect/web3-provider'
-import Torus from '@toruslabs/torus-embed'
+
 import { NetworkMonitor } from './NetworkMonitor'
 import { MetadataExample } from './MetadataExample'
 
@@ -23,22 +22,7 @@ const config = {
 const configRinkeby = new ConfigHelper().getConfig('rinkeby')
 
 const providerOptions = {
-  walletconnect: {
-    package: WalletConnectProvider,
-    options: {
-      infuraId: ''
-    }
-  },
-  torus: {
-    package: Torus,
-    options: {
-      networkParams: {
-        host: config.nodeUri // optional
-        // chainId: 1337, // optional
-        // networkId: 1337 // optional
-      }
-    }
-  }
+
 }
 
 export const web3ModalOpts = {

example/src/Publish.tsx

@@ -32,7 +32,16 @@ export function Publish() {
 
   const publishAsset = async () => {
     console.log(isLoading)
-    const ddo = await publish(asset as Metadata, '90', 'access', '', '')
+
+    const priceOptions = {
+      price:10,
+      tokensToMint:10,
+      type: 'simple',
+      weightOnDataToken: '',
+      liquidityProviderFee: ''
+    }
+
+    const ddo = await publish(asset as Metadata, priceOptions, 'access', '', '')
     console.log(ddo)
     console.log(isLoading)
     const pool = ocean.pool.createDTPool(

src/hooks/usePublish/PriceOptions.ts

@@ -0,0 +1,8 @@
+export interface PriceOptions {
+    price?: number
+    tokensToMint: number
+    type: 'simple' | 'advanced' | string
+    weightOnDataToken: string
+    liquidityProviderFee: string
+  }
+  

src/hooks/usePublish/ServiceConfig.ts

@@ -1,5 +0,0 @@
-import { ServiceType } from '@oceanprotocol/lib/dist/node/ddo/interfaces/Service'
-export interface ServiceConfig {
-  serviceType: ServiceType
-  cost: string
-}

src/hooks/usePublish/index.ts

@@ -1,2 +1,2 @@
 export * from './usePublish'
-export * from './ServiceConfig'
+export * from './PriceOptions'

src/hooks/usePublish/usePublish.ts

@@ -1,5 +1,5 @@
-import { useEffect, useState } from 'react'
-import { DDO, Metadata, DataTokens, Logger } from '@oceanprotocol/lib'
+import { useState } from 'react'
+import { DDO, Metadata, Logger } from '@oceanprotocol/lib'
 import { useOcean } from '../../providers'
 import ProviderStatus from '../../providers/OceanProvider/ProviderStatus'
 import {
@@ -7,13 +7,13 @@ import {
   ServiceComputePrivacy,
   ServiceType
 } from '@oceanprotocol/lib/dist/node/ddo/interfaces/Service'
-import { ServiceConfig } from './ServiceConfig'
+import { PriceOptions } from './PriceOptions'
 import { publishFeedback } from '../../utils'
 
 interface UsePublish {
   publish: (
     asset: Metadata,
-    tokensToMint: string,
+    priceOptions: PriceOptions,
     serviceConfigs: ServiceType,
     mpAddress: string,
     mpFee: string
@@ -26,7 +26,7 @@ interface UsePublish {
 }
 
 function usePublish(): UsePublish {
-  const { ocean, status, account, accountId, config } = useOcean()
+  const { ocean, status, account, accountId } = useOcean()
   const [isLoading, setIsLoading] = useState(false)
   const [publishStep, setPublishStep] = useState<number | undefined>()
   const [publishStepText, setPublishStepText] = useState<string | undefined>()
@@ -40,33 +40,23 @@ function usePublish(): UsePublish {
   /**
    * Publish an asset.It also creates the datatoken, mints tokens and gives the market allowance
    * @param  {Metadata} asset The metadata of the asset.
-   * @param  {string} tokensToMint Numer of tokens to mint and give allowance to market
-   * @param  {ServiceConfig[]} serviceConfigs Desired services of the asset, ex: [{serviceType: 'access', cost:'1'}]
+   * @param  {PriceOptions}  priceOptions : number of tokens to mint, datatoken weight , liquidity fee, type : simple, advanced
+   * @param  {ServiceType} serviceType Desired service type of the asset access or compute
    * @param  {string} mpAddress The address of the market
    * @param  {string} mpFee The fee of the market
    * @return {Promise<DDO>} Returns the newly published ddo
    */
   async function publish(
     asset: Metadata,
-    tokensToMint: string,
-    serviceType: ServiceType,
-    mpAddress: string,
-    mpFee: string
+    priceOptions: PriceOptions,
+    serviceType: ServiceType
   ): Promise<DDO> {
     if (status !== ProviderStatus.CONNECTED || !ocean || !account) return
     setIsLoading(true)
     setPublishError(undefined)
     try {
-      setStep(0)
-      
-      const dtAddress = await ocean.datatokens.create(config.metadataStoreUri,"name",'DT',"1000", accountId)
-      Logger.log('datatoken created', dtAddress)
+      const tokensToMint = priceOptions.tokensToMint.toString()
 
-      setStep(1)
-      await mint(dtAddress, tokensToMint)
-      Logger.log(`minted ${tokensToMint} tokens`)
-
-      setStep(2)
       const publishedDate =
         new Date(Date.now()).toISOString().split('.')[0] + 'Z'
       const timeout = 0
@@ -134,11 +124,17 @@ function usePublish(): UsePublish {
       }
 
       Logger.log('services created', services)
-      setStep(3)
-      const ddo = await ocean.assets.create(asset, account, services, dtAddress)
-      Logger.log('ddo created', ddo)
-      setStep(4)
 
+      const ddo = await ocean.assets
+        .create(asset, account, services)
+        .next(setStep)
+      Logger.log('ddo created', ddo)
+      setStep(7)
+      await mint(ddo.dataToken, tokensToMint)
+      Logger.log(`minted ${tokensToMint} tokens`)
+
+      await createPricing(priceOptions, ddo.dataToken)
+      setStep(8)
       return ddo
     } catch (error) {
       setPublishError(error.message)
@@ -149,6 +145,34 @@ function usePublish(): UsePublish {
     }
   }
 
+  async function createPricing(
+    priceOptions: PriceOptions,
+    dataTokenAddress: string
+  ) {
+    switch (priceOptions.type) {
+      case 'advanced': {
+        // weight is hardcoded at 9 (90%) and publisher fee at 0.03(this was a random value set by me)
+        const pool = await ocean.pool.createDTPool(
+          accountId,
+          dataTokenAddress,
+          priceOptions.tokensToMint.toString(),
+          priceOptions.weightOnDataToken,
+          priceOptions.liquidityProviderFee
+        )
+        break
+      }
+      case 'simple': {
+        const fixedPriceExchange = await ocean.fixedRateExchange.create(
+          dataTokenAddress,
+          priceOptions.price.toString(),
+          accountId
+        )
+        await ocean.fixedRateExchange.activate(fixedPriceExchange, accountId)
+        break
+      }
+    }
+  }
+
   async function mint(tokenAddress: string, tokensToMint: string) {
     Logger.log('mint function', tokenAddress, accountId)
     await ocean.datatokens.mint(tokenAddress, accountId, tokensToMint)

src/utils/dtUtils.ts

@@ -54,6 +54,48 @@ export async function getBestDataTokenPrice(
 
   return bestPool.price
 }
+export async function getCheapestExchange(
+  ocean: Ocean,
+  dataTokenAddress: string
+) {
+  if (!ocean || !dataTokenAddress) return
+
+  const tokenExchanges = await ocean.fixedRateExchange.searchforDT(
+    dataTokenAddress,
+    '1'
+  )
+  Logger.log('Exchanges found', tokenExchanges)
+  if (tokenExchanges === undefined || tokenExchanges.length === 0) {
+    return {
+      address: '',
+      price: ''
+    }
+  }
+  let cheapestExchangeAddress
+  let cheapestExchangePrice = new Decimal(999999999999)
+
+  if (tokenExchanges) {
+    for (let i = 0; i < tokenExchanges.length; i++) {
+      const exchangePrice = tokenExchanges[i].fixedRate
+
+      const decimalExchangePrice = new Decimal(exchangePrice)
+      Logger.log(
+        'Pool price ',
+        tokenExchanges[i],
+        decimalExchangePrice.toString()
+      )
+      if (decimalExchangePrice < cheapestExchangePrice) {
+        cheapestExchangePrice = decimalExchangePrice
+        cheapestExchangeAddress = tokenExchanges[i]
+      }
+    }
+  }
+
+  return {
+    address: cheapestExchangeAddress,
+    price: cheapestExchangePrice.toString()
+  }
+}
 
 export async function checkAndBuyDT(
   ocean: Ocean,
@@ -65,25 +107,37 @@ export async function checkAndBuyDT(
     account
   )
   Logger.log(`User has ${userOwnedTokens} tokens`)
-  let cheapestPool
   if (userOwnedTokens === '0') {
-    cheapestPool = await getCheapestPool(
+    const cheapestPool = await getCheapestPool(
       ocean,
       account.getId(),
       dataTokenAddress
     )
+    const cheapestExchange = await getCheapestExchange(ocean, dataTokenAddress)
     Decimal.set({ precision: 5 })
-    const price = new Decimal(cheapestPool.poolPrice).times(1.05).toString()
-    const maxPrice = new Decimal(cheapestPool.poolPrice).times(2).toString()
-    Logger.log('Buying token', cheapestPool, account.getId(), price)
-    const buyResponse = await ocean.pool.buyDT(
-      account.getId(),
-      cheapestPool.poolAddress,
-      '1',
-      price,
-      maxPrice
-    )
-    Logger.log('DT buy response', buyResponse)
-    return buyResponse
+    const cheapestPoolPrice = new Decimal(cheapestPool.price)
+    const cheapestExchangePrice = new Decimal(cheapestExchange.price)
+
+    if (cheapestExchangePrice > cheapestPoolPrice) {
+      const price = new Decimal(cheapestPool.price).times(1.05).toString()
+      const maxPrice = new Decimal(cheapestPool.price).times(2).toString()
+      Logger.log('Buying token', cheapestPool, account.getId(), price)
+      const buyResponse = await ocean.pool.buyDT(
+        account.getId(),
+        cheapestPool.address,
+        '1',
+        price,
+        maxPrice
+      )
+      Logger.log('DT buy response', buyResponse)
+      return buyResponse
+    } else {
+      const exchange = await ocean.fixedRateExchange.buyDT(
+        cheapestExchange.address,
+        '1',
+        account.getId()
+      )
+      return exchange
+    }
   }
 }

src/utils/index.ts

@@ -29,10 +29,12 @@ export const feedback: { [key in number]: string } = {
 }
 
 export const publishFeedback: { [key in number]: string } = {
-  0: '1/4 Creating datatoken ...',
-  1: '2/4 Minting tokens ...',
-  3: '3/4 Publishing asset ...',
-  4: '4/4 Asset published succesfully'
+  0: '1/6 Creating datatoken ...',
+  2: '2/6 Encrypting files ...',
+  4: '3/6 Generating proof ...',
+  6: '4/6 Storing ddo ...',
+  7: '5/6 Minting tokens ...',
+  8: '6/6 Asset published succesfully'
 }
 
 export * from './web3'