Add getTokenDetails to EVM and Zano

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- added: Implement `getTokenDetails` in Ethereum and Zano tools
 - added: (Zano) Support infoServerTokens
 - changed: Allow Zano to spend to multiple destinations
 - fixed: Update builtinTokens with infoServerPayload when creating tools

package.json

@@ -149,7 +149,7 @@
     "chai": "^4.2.0",
     "clipanion": "^4.0.0-rc.2",
     "crypto-browserify": "^3.12.0",
-    "edge-core-js": "^2.28.0",
+    "edge-core-js": "^2.29.0",
     "esbuild-loader": "^2.20.0",
     "eslint": "^8.19.0",
     "eslint-config-standard-kit": "0.15.1",

src/ethereum/EthereumTools.ts

@@ -5,6 +5,7 @@ import {
   EdgeCurrencyInfo,
   EdgeCurrencyTools,
   EdgeEncodeUri,
+  EdgeGetTokenDetailsFilter,
   EdgeIo,
   EdgeMetaToken,
   EdgeParsedUri,
@@ -381,6 +382,79 @@ export class EthereumTools implements EdgeCurrencyTools {
     return Object.keys(ethereumPlugins).map(plugin => `wallet:${plugin}`)
   }
 
+  async getTokenDetails(
+    filter: EdgeGetTokenDetailsFilter
+  ): Promise<EdgeToken[]> {
+    const { contractAddress } = filter
+    if (contractAddress == null) return []
+
+    const valid = EthereumUtil.isValidAddress(contractAddress)
+    if (!valid) return []
+
+    const { networkAdapterConfigs } = this.networkInfo
+
+    const networkAdapterConfig = networkAdapterConfigs.find(
+      (networkAdapterConfig): networkAdapterConfig is RpcAdapterConfig =>
+        networkAdapterConfig.type === 'rpc'
+    )
+
+    if (networkAdapterConfig == null) return []
+
+    const rpcServers = networkAdapterConfig.servers
+
+    const ethProviders: ethers.providers.JsonRpcProvider[] = rpcServers.map(
+      rpcServer =>
+        new ethers.providers.JsonRpcProvider(
+          rpcServer,
+          this.networkInfo.chainParams.chainId
+        )
+    )
+    const ERC20_ABI = [
+      'function name() view returns (string)',
+      'function symbol() view returns (string)',
+      'function decimals() view returns (uint8)'
+    ]
+
+    interface ERC20Details {
+      name: string
+      symbol: string
+      decimals: number
+    }
+
+    const details: ERC20Details | undefined = await multicastEthProviders<
+      ERC20Details,
+      ethers.providers.JsonRpcProvider
+    >({
+      func: async (ethProvider: ethers.providers.JsonRpcProvider) => {
+        const contract = new ethers.Contract(
+          contractAddress,
+          ERC20_ABI,
+          ethProvider
+        )
+        const [name, symbol, decimals] = await Promise.all([
+          contract.name(),
+          contract.symbol(),
+          contract.decimals()
+        ])
+        return { name, symbol, decimals }
+      },
+      providers: ethProviders
+    }).catch(() => undefined)
+    if (details == null) return []
+
+    const out: EdgeToken = {
+      currencyCode: details.symbol,
+      displayName: details.name,
+      networkLocation: {
+        contractAddress
+      },
+      denominations: [
+        { name: details.symbol, multiplier: '1' + '0'.repeat(details.decimals) }
+      ]
+    }
+    return [out]
+  }
+
   async getTokenId(token: EdgeToken): Promise<string> {
     validateToken(token)
     const cleanLocation = asMaybeContractLocation(token.networkLocation)

src/zano/ZanoTools.ts

@@ -1,9 +1,10 @@
 import { div } from 'biggystring'
-import { asString } from 'cleaners'
+import { asMaybe, asString } from 'cleaners'
 import {
   EdgeCurrencyInfo,
   EdgeCurrencyTools,
   EdgeEncodeUri,
+  EdgeGetTokenDetailsFilter,
   EdgeIo,
   EdgeLog,
   EdgeMetaToken,
@@ -23,6 +24,7 @@ import { encodeUriCommon, parseUriCommon } from '../common/uriHelpers'
 import { getLegacyDenomination, mergeDeeply } from '../common/utils'
 import {
   asSafeZanoWalletInfo,
+  asZanoAssetDetails,
   asZanoPrivateKeys,
   ZanoImportPrivateKeyOpts,
   ZanoInfoPayload,
@@ -215,6 +217,62 @@ export class ZanoTools implements EdgeCurrencyTools {
     return encodedUri
   }
 
+  async getTokenDetails(
+    filter: EdgeGetTokenDetailsFilter
+  ): Promise<EdgeToken[]> {
+    const { contractAddress } = filter
+    if (contractAddress == null) return []
+
+    const hex64Regex = /^[0-9a-fA-F]{64}$/
+    if (!hex64Regex.test(contractAddress)) {
+      return []
+    }
+
+    const opts = {
+      headers: {
+        'Content-Type': 'application/json'
+      },
+      method: 'POST',
+      body: JSON.stringify({
+        method: 'get_asset_info',
+        params: { asset_id: contractAddress }
+      })
+    }
+
+    const response = await this.io.fetch(
+      `${this.networkInfo.walletRpcAddress}/json_rpc`,
+      opts
+    )
+
+    if (!response.ok) {
+      const message = await response.text()
+      throw new Error(message)
+    }
+
+    const json: unknown = await response.json()
+
+    const assetDetails = asMaybe(asZanoAssetDetails)(json)
+    if (assetDetails == null) return []
+
+    const {
+      ticker,
+      full_name: displayName,
+      decimal_point: decimals
+    } = assetDetails.result.asset_descriptor
+    const out: EdgeToken = {
+      currencyCode: ticker,
+      denominations: [
+        {
+          name: ticker,
+          multiplier: '1' + '0'.repeat(decimals)
+        }
+      ],
+      displayName,
+      networkLocation: { contractAddress }
+    }
+    return [out]
+  }
+
   async getTokenId(token: EdgeToken): Promise<string> {
     validateToken(token)
     const cleanLocation = asMaybeContractLocation(token.networkLocation)

src/zano/zanoTypes.ts

@@ -93,3 +93,20 @@ export const asZanoTransferParams = asObject<TransferParams>({
 export const createZanoTokenId = (token: EdgeToken): string => {
   return createTokenIdFromContractAddress(token).toLowerCase()
 }
+
+export const asZanoAssetDetails = asObject({
+  result: asObject({
+    asset_descriptor: asObject({
+      // current_supply: 2100000000000000,
+      decimal_point: asNumber, // 8,
+      full_name: asString, // 'Get Edgy ',
+      // hidden_supply: false,
+      // meta_info: '',
+      // owner: '7e924fb7f5f6f7f6e683e3f210f9fa4047c9978f7b9e5aa19a10afea0249d8fe',
+      // owner_eth_pub_key: '',
+      ticker: asString // 'EDGE'
+      // total_max_supply: 2100000000000000
+    })
+    // status: 'OK'
+  })
+})

yarn.lock

@@ -3928,10 +3928,10 @@ [email protected]:
     bindings "^1.2.1"
     nan "^2.0.9"
 
-edge-core-js@^2.28.0:
-  version "2.28.0"
-  resolved "https://registry.yarnpkg.com/edge-core-js/-/edge-core-js-2.28.0.tgz#3ec5549c1b821ba7cea369c7ff36ed980553b1f3"
-  integrity sha512-c6oU43fMu9L53kMy9qhsqKHkJ05QqKEeSc80FhwfDTeBtlG9/hn+tdie50wREki3p4amLMvXdqVoqX/m+RwWUQ==
+edge-core-js@^2.29.0:
+  version "2.29.0"
+  resolved "https://registry.yarnpkg.com/edge-core-js/-/edge-core-js-2.29.0.tgz#36945c029bac568025ff5b22878d850df3803304"
+  integrity sha512-7HQwlLZELlG0dmjymyVABWOA2+9x5MvLcVtrTubNBGE24s4nQEtcsO/+WAF08J+Zm220E9GtlxBD3uScDoibMw==
   dependencies:
     aes-js "^3.1.0"
     base-x "^4.0.0"