Account balances endpoint (#147)

* add accounts/positions to api

* strong type apis

src/pages/api/accounts/[id]/debts.ts

@@ -9,10 +9,12 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
 
   const accountId = req.query.id
 
-  const account = await (await fetch(`${ENV.URL_API}/accounts/${accountId}${VERCEL_BYPASS}`)).json()
+  const position: Position = await (
+    await fetch(`${ENV.URL_API}/accounts/${accountId}${VERCEL_BYPASS}`)
+  ).json()
 
-  if (account) {
-    return res.status(200).json(account.debts)
+  if (position) {
+    return res.status(200).json(position.debts)
   }
 
   return res.status(404)

src/pages/api/accounts/[id]/deposits.ts

@@ -9,10 +9,12 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
 
   const accountId = req.query.id
 
-  const account = await (await fetch(`${ENV.URL_API}/accounts/${accountId}${VERCEL_BYPASS}`)).json()
+  const position: Position = await (
+    await fetch(`${ENV.URL_API}/accounts/${accountId}${VERCEL_BYPASS}`)
+  ).json()
 
-  if (account) {
-    return res.status(200).json(account.deposits)
+  if (position) {
+    return res.status(200).json(position.deposits)
   }
 
   return res.status(404)

src/pages/api/accounts/[id]/index.ts

@@ -2,6 +2,7 @@ import { CosmWasmClient } from '@cosmjs/cosmwasm-stargate'
 import { NextApiRequest, NextApiResponse } from 'next'
 
 import { ENV, ENV_MISSING_MESSAGE } from 'constants/env'
+import { resolvePositionResponse } from 'utils/resolvers'
 
 export default async function handler(req: NextApiRequest, res: NextApiResponse) {
   if (!ENV.URL_RPC || !ENV.ADDRESS_CREDIT_MANAGER) {
@@ -12,14 +13,14 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
 
   const client = await CosmWasmClient.connect(ENV.URL_RPC)
 
-  const data = await client.queryContractSmart(ENV.ADDRESS_CREDIT_MANAGER, {
+  const data: PositionResponse = await client.queryContractSmart(ENV.ADDRESS_CREDIT_MANAGER, {
     positions: {
       account_id: accountId,
     },
   })
 
   if (data) {
-    return res.status(200).json(data)
+    return res.status(200).json(resolvePositionResponse(data))
   }
 
   return res.status(404)

src/pages/api/markets/borrow.ts

@@ -10,7 +10,6 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
     return res.status(404).json(ENV_MISSING_MESSAGE)
   }
 
-  const marketAssets = getMarketAssets()
   const $liquidity = fetch(`${ENV.URL_API}/markets/liquidity${VERCEL_BYPASS}`)
   const $markets = fetch(`${ENV.URL_API}/markets${VERCEL_BYPASS}`)
   const $prices = fetch(`${ENV.URL_API}/prices${VERCEL_BYPASS}`)
@@ -18,16 +17,17 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
   const borrow: BorrowAsset[] = await Promise.all([$liquidity, $markets, $prices]).then(
     async ([$liquidity, $markets, $prices]) => {
       const liquidity: Coin[] = await $liquidity.json()
-      const markets: Market[] = await $markets.json()
+      const borrowEnabledMarkets: Market[] = (await $markets.json()).filter(
+        (market: Market) => market.borrowEnabled,
+      )
       const prices: Coin[] = await $prices.json()
 
-      return marketAssets.map((asset) => {
-        const currentMarket = markets.find((market) => market.denom === asset.denom)
-        const price = prices.find((coin) => coin.denom === asset.denom)?.amount ?? '1'
-        const amount = liquidity.find((coin) => coin.denom === asset.denom)?.amount ?? '0'
+      return borrowEnabledMarkets.map((market) => {
+        const price = prices.find((coin) => coin.denom === market.denom)?.amount ?? '1'
+        const amount = liquidity.find((coin) => coin.denom === market.denom)?.amount ?? '0'
         return {
-          denom: asset.denom,
-          borrowRate: currentMarket?.borrow_rate ?? '0',
+          denom: market.denom,
+          borrowRate: market.borrowRate ?? 0,
           liquidity: {
             amount: amount,
             value: new BigNumber(amount).times(price).toString(),

src/pages/api/markets/debts.ts

@@ -21,7 +21,7 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
     {
         underlying_debt_amount: {
         denom: "${asset.denom}"
-        amount_scaled: "${asset.debt_total_scaled}"
+        amount_scaled: "${asset.debtTotalScaled}"
       }
     }`,
     )

src/pages/api/markets/deposits.ts

@@ -13,15 +13,15 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
 
   let query = ''
 
-  markets.forEach((asset: any) => {
+  markets.forEach((market: Market) => {
     query += getContractQuery(
-      denomToKey(asset.denom),
+      denomToKey(market.denom),
       ENV.ADDRESS_RED_BANK || '',
       `
     {
       underlying_liquidity_amount: {
-        denom: "${asset.denom}"
-        amount_scaled: "${asset.collateral_total_scaled}"
+        denom: "${market.denom}"
+        amount_scaled: "${market.collateralTotalScaled}"
       }
     }`,
     )

src/pages/api/markets/index.ts

@@ -4,6 +4,7 @@ import { NextApiRequest, NextApiResponse } from 'next'
 import { ENV, ENV_MISSING_MESSAGE } from 'constants/env'
 import { getMarketAssets } from 'utils/assets'
 import { denomToKey } from 'utils/query'
+import { resolveMarketResponses } from 'utils/resolvers'
 
 export default async function handler(req: NextApiRequest, res: NextApiResponse) {
   if (!ENV.URL_GQL || !ENV.ADDRESS_RED_BANK || !ENV.ADDRESS_INCENTIVES) {
@@ -35,11 +36,11 @@ export default async function handler(req: NextApiRequest, res: NextApiResponse)
     const market = result.rbwasmkey[`${denomToKey(asset.denom)}`]
     return market
   })
-  return res.status(200).json(markets)
+  return res.status(200).json(resolveMarketResponses(markets))
 }
 
 interface RedBankData {
   rbwasmkey: {
-    [key: string]: Market
+    [key: string]: MarketResponse
   }
 }

src/pages/api/wallets/[address]/accounts/positions.ts

@@ -0,0 +1,35 @@
+import { CosmWasmClient } from '@cosmjs/cosmwasm-stargate'
+import { NextApiRequest, NextApiResponse } from 'next'
+
+import { ENV, ENV_MISSING_MESSAGE, VERCEL_BYPASS } from 'constants/env'
+import { resolvePositionResponses } from 'utils/resolvers'
+
+export default async function handler(req: NextApiRequest, res: NextApiResponse) {
+  if (!ENV.URL_RPC || !ENV.ADDRESS_CREDIT_MANAGER || !ENV.URL_API) {
+    return res.status(404).json(ENV_MISSING_MESSAGE)
+  }
+
+  const address = req.query.address
+
+  const accounts: string[] = await (
+    await fetch(`${ENV.URL_API}/wallets/${address}/accounts${VERCEL_BYPASS}`)
+  ).json()
+
+  const client = await CosmWasmClient.connect(ENV.URL_RPC)
+
+  const $positions: Promise<PositionResponse>[] = accounts.map((account) =>
+    client.queryContractSmart(ENV.ADDRESS_CREDIT_MANAGER!, {
+      positions: {
+        account_id: `${account}`,
+      },
+    }),
+  )
+
+  const positions = await Promise.all($positions).then((positions) => positions)
+
+  if (positions) {
+    return res.status(200).json(resolvePositionResponses(positions))
+  }
+
+  return res.status(404)
+}

src/types/interfaces/account.d.ts

@@ -0,0 +1,6 @@
+interface Position {
+  account: string
+  deposits: import('@cosmjs/stargate').Coin[]
+  debts: import('@cosmjs/stargate').Coin[]
+  lends: import('@cosmjs/stargate').Coin[]
+}

src/types/interfaces/asset.d.ts

@@ -18,7 +18,7 @@ interface OtherAsset extends Omit<Asset, 'symbol'> {
 
 interface BorrowAsset {
   denom: string
-  borrowRate: string | null
+  borrowRate: number | null
   liquidity: {
     amount: string
     value: string

src/types/interfaces/market.d.ts

@@ -0,0 +1,9 @@
+interface Market {
+  denom: string
+  borrowRate: number
+  debtTotalScaled: number
+  collateralTotalScaled: number
+  depositEnabled: boolean
+  borrowEnabled: boolean
+  depositCap: number
+}

src/types/interfaces/responses.d.ts

@@ -1,4 +1,11 @@
-interface Market {
+interface PositionResponse {
+  account_id: string
+  deposits: Coin[]
+  debts: Coin[]
+  lends: Coin[]
+}
+
+interface MarketResponse {
   denom: string
   max_loan_to_value: string
   liquidation_threshold: string
@@ -21,11 +28,3 @@ interface Market {
   borrow_enabled: boolean
   deposit_cap: string
 }
-
-interface MarketResult {
-  wasm: MarketData
-}
-
-interface MarketData {
-  [key: string]: Market
-}

src/utils/api.ts

@@ -11,13 +11,12 @@ export async function callAPI<T>(endpoint: string): Promise<T> {
 }
 
 export async function getBorrowData() {
-  await sleep()
   return callAPI<BorrowAsset[]>('/markets/borrow')
 }
 
 export async function getCreditAccounts(address: string) {
   if (!address) return []
-  return callAPI<any[]>(`/wallets/${address}/accounts`)
+  return callAPI<string[]>(`/wallets/${address}/accounts`)
 }
 
 export async function getMarkets() {
@@ -41,11 +40,13 @@ export async function getAccountDeposits(account: string) {
   if (!account) return []
   return callAPI<Coin[]>(`/accounts/${account}/deposits`)
 }
+
 export async function getWalletBalances(wallet: string) {
   if (!wallet) return []
   return callAPI<Coin[]>(`/wallets/${wallet}/balances`)
 }
 
-async function sleep() {
-  return new Promise((resolve) => setTimeout(resolve, 2500))
+export async function getAccountsPositions(wallet: string) {
+  if (!wallet) return []
+  return callAPI<Position[]>(`/wallets/${wallet}/accounts/positions`)
 }

src/utils/resolvers.ts

@@ -0,0 +1,24 @@
+export function resolvePositionResponses(responses: PositionResponse[]): Position[] {
+  return responses.map(resolvePositionResponse)
+}
+
+export function resolvePositionResponse(response: PositionResponse): Position {
+  return {
+    account: response.account_id,
+    deposits: response.deposits,
+    debts: response.debts,
+    lends: response.lends,
+  }
+}
+
+export function resolveMarketResponses(responses: MarketResponse[]): Market[] {
+  return responses.map((response) => ({
+    denom: response.denom,
+    borrowRate: Number(response.borrow_rate),
+    debtTotalScaled: Number(response.debt_total_scaled),
+    collateralTotalScaled: Number(response.collateral_total_scaled),
+    depositEnabled: response.deposit_enabled,
+    borrowEnabled: response.borrow_enabled,
+    depositCap: Number(response.deposit_cap),
+  }))
+}