adding address_info endpoint

backend/moonstream/actions.py

@@ -3,7 +3,7 @@ import logging
 
 
 from typing import Dict, Any, List, Optional, Union
-
+from enum import Enum
 from sqlalchemy.engine.base import Transaction
 from moonstreamdb.models import (
     EthereumBlock,
@@ -265,6 +265,52 @@ def parse_search_query_to_sqlalchemy_filters(q: str, allowed_addresses: List[str
     return constructed_filters
 
 
+class AdressType:
+    TOKEN = 0
+    SMART_CONTRACT = 1
+    NFT = 2
+    EXCHANGE = 3
+
+
+class LabelNames(Enum):
+    ETHERSCAN_SMARTCONTRACT = "etherscan_smartcontract"
+    COINMARKETCAP_TOKEN = "coinmarketcap_token"
+    EXCHANGE = "EXCANGE"
+
+
+def get_ethereum_address_info(
+    db_session: Session, address: str
+) -> Optional[data.EthereumAddressInfo]:
+    query = db_session.query(EthereumAddress.id).filter(
+        EthereumAddress.address == address
+    )
+    id = query.one_or_none()
+    if id is None:
+        return None
+    labels = (
+        db_session.query(EthereumLabel).filter(EthereumLabel.address_id == id[0]).all()
+    )
+    address_info = data.EthereumAddressInfo(address=address)
+    for label in labels:
+        if label.label == LabelNames.ETHERSCAN_SMARTCONTRACT:
+            address_info.address_type = AdressType.SMART_CONTRACT
+            address_info.details.name = label.label_data["name"]
+            address_info.details.external_URL = (
+                f"https://etherscan.io/address/{address}"
+            )
+        elif label.label == LabelNames.COINMARKETCAP_TOKEN:
+            address_info.address_type = AdressType.TOKEN
+            address_info.details.name = label.label_data["name"]
+            address_info.details.symbol = label.label_data["symbol"]
+            address_info.details.external_URL = label.label_data["coinmarketcap_url"]
+        elif label.label == LabelNames.EXCHANGE:
+            address_info.address_type = AdressType.EXCHANGE
+            address_info.details.name = label.label_data["name"]
+            address_info.details.symbol = label.label_data["label"]
+
+    return address_info
+
+
 def get_contract_source_info(
     db_session: Session, contract_address: str
 ) -> Optional[data.EthereumSmartContractSourceInfo]:

backend/moonstream/data.py

@@ -140,6 +140,18 @@ class EthereumSmartContractSourceInfo(BaseModel):
     compiler_version: str
 
 
+class EthereumAddressDetails(BaseModel):
+    name: Optional[str]
+    symbol: Optional[str]
+    external_URL: Optional[str]
+
+
+class EthereumAddressInfo(BaseModel):
+    address: str
+    address_type: Optional[int]
+    details: EthereumAddressDetails = EthereumAddressDetails()
+
+
 class TxinfoEthereumBlockchainResponse(BaseModel):
     tx: EthereumTransaction
     is_smart_contract_deployment: bool = False

backend/moonstream/routes/address_info.py

@@ -0,0 +1,10 @@
+import logging
+from typing import Dict, Optional
+
+from sqlalchemy.sql.expression import true
+
+from fastapi import FastAPI, Depends, HTTPException, Query
+from fastapi.middleware.cors import CORSMiddleware
+from moonstreamdb.db import yield_db_session
+from moonstreamdb.models import EthereumAddress
+from sqlalchemy.orm import Session

backend/moonstream/routes/txinfo.py

@@ -10,7 +10,7 @@ from typing import Dict, Optional
 
 from sqlalchemy.sql.expression import true
 
-from fastapi import FastAPI, Depends, HTTPException, Query
+from fastapi import FastAPI, Depends, HTTPException, Query, Form
 from fastapi.middleware.cors import CORSMiddleware
 from moonstreamdb.db import yield_db_session
 from moonstreamdb.models import EthereumAddress
@@ -94,6 +94,18 @@ async def txinfo_ethereum_blockchain_handler(
     return response
 
 
+@app.get(
+    "/ethereum_blockchain/address_info",
+    tags=["address info"],
+    response_model=data.EthereumAddressInfo,
+)
+async def address_info_handler(
+    address: str = Form(...), db_session: Session = Depends(yield_db_session)
+) -> Optional[data.EthereumAddressInfo]:
+    response = actions.get_ethereum_address_info(db_session, address)
+    return response
+
+
 @app.get(
     "/addresses", tags=["address info"], response_model=data.AddressListLabelsResponse
 )