Ana/add only tokens gas prices 2nd attempt (#344)

* add terra and emoney gas price. terra reducer * delete fiatvalue from get balances in cosmos * add emoney reducer * hyper important emoney fixes * fix for emoney denoms * change gas price to micro units * add emoney denoms to denomlookup * transform to microunit also for terra tokens * return null for emoney gas prices * add harcoded gas prices * correct emoney hardcoded values * hardcoded terra gas prices. not working * update hardcoded values to working ones * delete unrelated changes to gas prices * apply suggestions except coinreducer * they call me mr coinreducer * change amount for price. add gas price reducer * change naming in gas price reducer * add error message Co-authored-by: Fabian <[email protected]>
luniehq · Feb 19, 2020 · e93ab67 · e93ab67
1 parent ec6a9ac
commit e93ab67
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Showing 6 changed files with 111 additions and 26 deletions.
diff --git a/lib/reducers/cosmosV0-reducers.js b/lib/reducers/cosmosV0-reducers.js
@@ -283,11 +283,8 @@ function coinReducer(coin) {
   }
 }
 
-function balanceReducer(coin, fiatValue) {
-  return {
-    ...coin,
-    fiatValue
-  }
+function balanceReducer(coin) {
+  return coin
 }
 
 function delegationReducer(delegation, validator) {
@@ -656,5 +653,6 @@ module.exports = {
   getTotalVotePercentage,
   getValidatorStatus,
   expectedRewardsPerToken,
-  getGroupByType
+  getGroupByType,
+  denomLookup
 }
diff --git a/lib/reducers/terraV3-reducers.js b/lib/reducers/terraV3-reducers.js
@@ -1,5 +1,6 @@
 const cosmosV2Reducers = require('./cosmosV2-reducers')
-const { atoms } = cosmosV2Reducers
+const BigNumber = require('bignumber.js')
+const { atoms, denomLookup } = cosmosV2Reducers
 
 // Terra has a slightly different structure and needs its own undelegationEndTimeReducer
 function undelegationEndTimeReducer(transaction) {
@@ -24,6 +25,31 @@ function undelegationEndTimeReducer(transaction) {
   }
 }
 
+function gasPriceReducer(gasPrice) {
+  if (!gasPrice) {
+    throw new Error(
+      'The token you are trying to request data for is not supported by Lunie.'
+    )
+  }
+
+  // we want to show only atoms as this is what users know
+  const denom = denomLookup(gasPrice.denom)
+  return {
+    denom: denom,
+    price: BigNumber(gasPrice.price).div(1000000) // Danger: this might not be the case for all future tokens
+  }
+}
+
+function balanceReducer(coin, fiatValue, gasPrices) {
+  return {
+    ...coin,
+    fiatValue,
+    gasPrice: gasPriceReducer(
+      gasPrices.find(gasprice => denomLookup(gasprice.denom) === coin.denom)
+    ).price
+  }
+}
+
 function rewardReducer(rewards, validatorsDictionary) {
   const formattedRewards = rewards.map(
     reward =>
@@ -47,6 +73,7 @@ function rewardReducer(rewards, validatorsDictionary) {
 
 module.exports = {
   ...cosmosV2Reducers,
+  balanceReducer,
   rewardReducer,
   undelegationEndTimeReducer
 }
diff --git a/lib/schema.js b/lib/schema.js
@@ -29,6 +29,7 @@ const typeDefs = gql`
     denom: String!
     amount: String!
     fiatValue: String
+    gasPrice: String
   }
 
   type Proposal {

diff --git a/lib/source/cosmosV0-source.js b/lib/source/cosmosV0-source.js
@@ -316,30 +316,13 @@ class CosmosV0API extends RESTDataSource {
     return this.reducers.blockReducer(this.networkId, block, transactions)
   }
 
-  async calculateFiatValues(balances, fiatCurrency) {
-    return Promise.all(
-      balances.map(balance => ({
-        denom: this.reducers.coinReducer(balance).denom,
-        fiatValue: this.calculateFiatValue
-          ? this.calculateFiatValue(balance, fiatCurrency)
-          : null
-      }))
-    )
-  }
-
-  async getBalancesFromAddress(address, fiatCurrency = `EUR`) {
+  async getBalancesFromAddress(address) {
     this.checkAddress(address)
     const response = await this.query(`bank/balances/${address}`)
     let balances = response || []
     const coins = balances.map(this.reducers.coinReducer)
-    // We calculate the fiatValue field for networks with multiple tokens
-    // For now, it is just e-Money
-    const fiatBalances = await this.calculateFiatValues(balances, fiatCurrency)
     return coins.map(coin => {
-      return this.reducers.balanceReducer(
-        coin,
-        fiatBalances.find(({ denom }) => denom === coin.denom).fiatValue
-      )
+      return this.reducers.balanceReducer(coin)
     })
   }
 

diff --git a/lib/source/emoneyV0-source.js b/lib/source/emoneyV0-source.js
@@ -3,9 +3,33 @@ const BigNumber = require('bignumber.js')
 const fetch = require('node-fetch')
 const apiURL = `https://api.exchangeratesapi.io/latest?`
 
+const gasPrices = [
+  {
+    denom: 'echf',
+    price: '0.400000'
+  },
+  {
+    denom: 'eeur',
+    price: '0.400000'
+  },
+  {
+    denom: 'ejpy',
+    price: '48.800000'
+  },
+  {
+    denom: 'eusd',
+    price: '0.440000'
+  },
+  {
+    denom: 'ungm',
+    price: '0.800000'
+  }
+]
+
 class EMoneyV0API extends TerraV3API {
   setReducers() {
     this.reducers = require('../reducers/emoneyV0-reducers')
+    this.gasPrices = gasPrices
   }
 
   // Here we query for the current inflation rates for all the backed tokens

diff --git a/lib/source/terraV3-source.js b/lib/source/terraV3-source.js
@@ -6,9 +6,33 @@ const { pubkeyToAddress } = require('../tools')
 // Terra is provisioning this amount manually https://medium.com/terra-money/project-santa-community-initiative-b8ab6c4d79be
 const annualProvision = '21700000000000' // 21.7 million in uluna
 
+const gasPrices = [
+  {
+    denom: 'ukrw',
+    price: '0.091000'
+  },
+  {
+    denom: 'uluna',
+    price: '0.001000'
+  },
+  {
+    denom: 'umnt',
+    price: '0.091000'
+  },
+  {
+    denom: 'usdr',
+    price: '0.091000'
+  },
+  {
+    denom: 'uusd',
+    price: '0.091000'
+  }
+]
+
 class TerraV3API extends CosmosV2API {
   setReducers() {
     this.reducers = require('../reducers/terraV3-reducers')
+    this.gasPrices = gasPrices
   }
 
   async getAllValidators(height) {
@@ -78,6 +102,34 @@ class TerraV3API extends CosmosV2API {
     )
     return this.reducers.rewardReducer(rewards, validatorsDictionary)
   }
+
+  async calculateFiatValues(balances, fiatCurrency) {
+    return Promise.all(
+      balances.map(balance => ({
+        denom: this.reducers.coinReducer(balance).denom,
+        fiatValue: this.calculateFiatValue
+          ? this.calculateFiatValue(balance, fiatCurrency)
+          : null
+      }))
+    )
+  }
+
+  async getBalancesFromAddress(address, fiatCurrency = `EUR`) {
+    this.checkAddress(address)
+    const response = await this.query(`bank/balances/${address}`)
+    let balances = response || []
+    const coins = balances.map(this.reducers.coinReducer)
+    // We calculate the fiatValue field for networks with multiple tokens
+    // For now, it is just e-Money (probably also Terra)
+    const fiatBalances = await this.calculateFiatValues(balances, fiatCurrency)
+    return coins.map(coin => {
+      return this.reducers.balanceReducer(
+        coin,
+        fiatBalances.find(({ denom }) => denom === coin.denom).fiatValue,
+        this.gasPrices
+      )
+    })
+  }
 }
 
 module.exports = TerraV3API