add token name symbol to pools (#61)

* add token name symbol to pools

* fix lint

* fix build

* remove token prefixed keys and add isDatatoken

* add decimals

* merge

* fix package lock

* lock fix

* fix tokenId

Co-authored-by: mihaisc <mihai@oceanprotocol.com>

abis/ERC20.json

@@ -0,0 +1,222 @@
+[
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "name",
+      "outputs": [
+        {
+          "name": "",
+          "type": "string"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "_spender",
+          "type": "address"
+        },
+        {
+          "name": "_value",
+          "type": "uint256"
+        }
+      ],
+      "name": "approve",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "totalSupply",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "_from",
+          "type": "address"
+        },
+        {
+          "name": "_to",
+          "type": "address"
+        },
+        {
+          "name": "_value",
+          "type": "uint256"
+        }
+      ],
+      "name": "transferFrom",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "decimals",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint8"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_owner",
+          "type": "address"
+        }
+      ],
+      "name": "balanceOf",
+      "outputs": [
+        {
+          "name": "balance",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "symbol",
+      "outputs": [
+        {
+          "name": "",
+          "type": "string"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "constant": false,
+      "inputs": [
+        {
+          "name": "_to",
+          "type": "address"
+        },
+        {
+          "name": "_value",
+          "type": "uint256"
+        }
+      ],
+      "name": "transfer",
+      "outputs": [
+        {
+          "name": "",
+          "type": "bool"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "constant": true,
+      "inputs": [
+        {
+          "name": "_owner",
+          "type": "address"
+        },
+        {
+          "name": "_spender",
+          "type": "address"
+        }
+      ],
+      "name": "allowance",
+      "outputs": [
+        {
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "payable": true,
+      "stateMutability": "payable",
+      "type": "fallback"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "owner",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "name": "spender",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "Approval",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "name": "from",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "name": "to",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "name": "value",
+          "type": "uint256"
+        }
+      ],
+      "name": "Transfer",
+      "type": "event"
+    }
+  ]

abis/ERC20NameBytes.json

@@ -0,0 +1,17 @@
+[
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "name",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    }
+  ]

abis/ERC20SymbolBytes.json

@@ -0,0 +1,17 @@
+[
+    {
+      "constant": true,
+      "inputs": [],
+      "name": "symbol",
+      "outputs": [
+        {
+          "internalType": "bytes32",
+          "name": "",
+          "type": "bytes32"
+        }
+      ],
+      "payable": false,
+      "stateMutability": "view",
+      "type": "function"
+    }
+  ]

schema.graphql

@@ -47,15 +47,23 @@ type Pool @entity {
     @derivedFrom(field: "poolAddress")
 }
 
+
 type PoolToken @entity {
-  id: ID! # poolId + token address
-  poolId: Pool!
-  tokenId: Datatoken
-  tokenAddress: String
-  balance: BigDecimal!
-  denormWeight: BigDecimal!
+    id: ID!                                             # poolId + token address
+    poolId: Pool!
+    isDatatoken: Boolean!
+    address: String
+    tokenId: Datatoken
+    tokenAddress: String
+    balance: BigDecimal!
+    denormWeight: BigDecimal!
+    symbol: String
+    name: String
+    decimals: Int
 }
 
+
+
 type PoolShare @entity {
   id: ID! # poolId + userAddress
   userAddress: User!

src/helpers.ts

@@ -22,6 +22,9 @@ import {
 } from './@types/schema'
 
 import { Pool } from './@types/templates/Pool/Pool'
+import { ERC20 } from './@types/templates/Pool/ERC20'
+import { ERC20SymbolBytes } from './@types/templates/Pool/ERC20SymbolBytes'
+import { ERC20NameBytes } from './@types/templates/Pool/ERC20NameBytes'
 
 export const ZERO_BD = BigDecimal.fromString('0.0')
 export const MINUS_1_BD = BigDecimal.fromString('-1.0')
@@ -103,6 +106,67 @@ export function decimalToBigInt(value: BigDecimal): BigInt {
   return value.digits.times(scale)
 }
 
+export function isNullEthValue(value: string): boolean {
+  return (
+    value ==
+    '0x0000000000000000000000000000000000000000000000000000000000000001'
+  )
+}
+
+export function getTokenSymbol(tokenAddress: Address): string {
+  const contract = ERC20.bind(tokenAddress)
+  const contractSymbolBytes = ERC20SymbolBytes.bind(tokenAddress)
+
+  // try types string and bytes32 for symbol
+  let symbolValue = 'unknown'
+  const symbolResult = contract.try_symbol()
+  if (symbolResult.reverted) {
+    const symbolResultBytes = contractSymbolBytes.try_symbol()
+    if (!symbolResultBytes.reverted) {
+      // for broken pairs that have no symbol function exposed
+      if (!isNullEthValue(symbolResultBytes.value.toHexString())) {
+        symbolValue = symbolResultBytes.value.toString()
+      }
+    }
+  } else {
+    symbolValue = symbolResult.value
+  }
+
+  return symbolValue
+}
+
+export function getTokenName(tokenAddress: Address): string {
+  const contract = ERC20.bind(tokenAddress)
+  const contractNameBytes = ERC20NameBytes.bind(tokenAddress)
+
+  // try types string and bytes32 for name
+  let nameValue = 'unknown'
+  const nameResult = contract.try_name()
+  if (nameResult.reverted) {
+    const nameResultBytes = contractNameBytes.try_name()
+    if (!nameResultBytes.reverted) {
+      // for broken exchanges that have no name function exposed
+      if (!isNullEthValue(nameResultBytes.value.toHexString())) {
+        nameValue = nameResultBytes.value.toString()
+      }
+    }
+  } else {
+    nameValue = nameResult.value
+  }
+
+  return nameValue
+}
+
+export function getTokenDecimals(tokenAddress: Address): i32 {
+  const contract = ERC20.bind(tokenAddress)
+  let decimals = 18
+  const decimalCall = contract.try_decimals()
+  if (!decimalCall.reverted) {
+    decimals = decimalCall.value
+  }
+  return decimals
+}
+
 export function updatePoolTokenBalance(
   poolToken: PoolToken,
   balance: BigDecimal,
@@ -118,7 +182,7 @@ export function updatePoolTokenBalance(
       'EEEEEEEEEEEEEEEEE poolToken.balance < Zero: pool={}, poolToken={}, oldBalance={}, newBalance={}',
       [
         poolToken.poolId,
-        poolToken.tokenAddress.toString(),
+        poolToken.address.toString(),
         poolToken.balance.toString(),
         balance.toString()
       ]
@@ -153,16 +217,20 @@ export function createPoolShareEntity(
 export function createPoolTokenEntity(
   id: string,
   pool: string,
-  address: string
+  address: Address
 ): void {
-  const datatoken = Datatoken.load(address)
+  const datatoken = Datatoken.load(address.toHexString())
 
   const poolToken = new PoolToken(id)
   poolToken.poolId = pool
+  poolToken.isDatatoken = !!datatoken
   poolToken.tokenId = datatoken ? datatoken.id : ''
-  poolToken.tokenAddress = address
+  poolToken.address = address.toHexString()
   poolToken.balance = ZERO_BD
   poolToken.denormWeight = ZERO_BD
+  poolToken.symbol = getTokenSymbol(address)
+  poolToken.name = getTokenName(address)
+  poolToken.decimals = getTokenDecimals(address)
   poolToken.save()
 }
 
@@ -206,7 +274,7 @@ export function updatePoolTransactionToken(
   ptxTokenValues.poolToken = poolTokenId
   ptxTokenValues.poolAddress = poolToken.poolId
   ptxTokenValues.userAddress = ptx.userAddress
-  ptxTokenValues.tokenAddress = PoolToken.load(poolTokenId).tokenAddress
+  ptxTokenValues.tokenAddress = PoolToken.load(poolTokenId).address
 
   ptxTokenValues.value = amount
   ptxTokenValues.tokenReserve = balance

src/mappings/pool.ts

@@ -107,7 +107,7 @@ export function _handleRebind(
   const poolTokenId = poolId.concat('-').concat(address.toHexString())
   let poolToken = PoolToken.load(poolTokenId)
   if (poolToken == null) {
-    createPoolTokenEntity(poolTokenId, poolId, address.toHexString())
+    createPoolTokenEntity(poolTokenId, poolId, address)
     poolToken = PoolToken.load(poolTokenId)
     pool.totalWeight = pool.totalWeight.plus(denormWeight)
   } else {

subgraph.polygon.yaml

@@ -144,6 +144,12 @@ templates:
           file: ./abis/BPool.json
         - name: BToken
           file: ./abis/BToken.json
+        - name: ERC20
+          file: ./abis/ERC20.json
+        - name: ERC20SymbolBytes
+          file: ./abis/ERC20SymbolBytes.json
+        - name: ERC20NameBytes
+          file: ./abis/ERC20NameBytes.json
       eventHandlers:
         - event: LOG_CALL(indexed bytes4,indexed address,bytes)
           topic0: '0x34e1990700000000000000000000000000000000000000000000000000000000'

subgraph.rinkeby.yaml

@@ -144,6 +144,12 @@ templates:
           file: ./abis/BPool.json
         - name: BToken
           file: ./abis/BToken.json
+        - name: ERC20
+          file: ./abis/ERC20.json
+        - name: ERC20SymbolBytes
+          file: ./abis/ERC20SymbolBytes.json
+        - name: ERC20NameBytes
+          file: ./abis/ERC20NameBytes.json
       eventHandlers:
         - event: LOG_CALL(indexed bytes4,indexed address,bytes)
           topic0: '0x34e1990700000000000000000000000000000000000000000000000000000000'

subgraph.ropsten.yaml

@@ -144,6 +144,12 @@ templates:
           file: ./abis/BPool.json
         - name: BToken
           file: ./abis/BToken.json
+        - name: ERC20
+          file: ./abis/ERC20.json
+        - name: ERC20SymbolBytes
+          file: ./abis/ERC20SymbolBytes.json
+        - name: ERC20NameBytes
+          file: ./abis/ERC20NameBytes.json
       eventHandlers:
         - event: LOG_CALL(indexed bytes4,indexed address,bytes)
           topic0: '0x34e1990700000000000000000000000000000000000000000000000000000000'

subgraph.yaml

@@ -144,6 +144,12 @@ templates:
           file: ./abis/BPool.json
         - name: BToken
           file: ./abis/BToken.json
+        - name: ERC20
+          file: ./abis/ERC20.json
+        - name: ERC20SymbolBytes
+          file: ./abis/ERC20SymbolBytes.json
+        - name: ERC20NameBytes
+          file: ./abis/ERC20NameBytes.json
       eventHandlers:
         - event: LOG_CALL(indexed bytes4,indexed address,bytes)
           topic0: '0x34e1990700000000000000000000000000000000000000000000000000000000'