from xrpl.clients import JsonRpcClient
from xrpl.models import AccountLines

client = JsonRpcClient("https://xrplcluster.com")

print("connected to mainnet")

# Real accounts that were frozen on mainnet as an example

# Issuer address
issuer_addr = "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn"

# Target address to query for freeze status
target_addr = "rUpy3eEg8rqjqfUoLeBnZkscbKbFsKXC3v"

token_name = "USD"
print(f"searching for a trustline for {token_name} issued by {target_addr} for the address {issuer_addr}")

# Build account line query
acc_info = AccountLines(account=issuer_addr, ledger_index="validated")

# Submit query
response = client.request(acc_info)

# Parse response for result
result = response.result

# Parse result for account lines
found_target_line = False
if "lines" in result:
    lines = result["lines"]
    for line in lines:
        # Query result with trustline params
        if target_addr == line["account"] and token_name == line["currency"]: 
            found_target_line = True

            if 'freeze' in line:
                print(f'freeze status of trustline: {line["freeze"]}')
            else:
                print(f'freeze status of trustline: False')

    if(not(found_target_line)):
        print(f"no such trustline exists for {token_name} issued by {target_addr} for the address {issuer_addr}")
else:
    print("this account has no trustlines")