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Add CallContract (and helper methods) for calling contracts via Metamask #79

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merged 2 commits into from
Sep 4, 2022
Merged

Add CallContract (and helper methods) for calling contracts via Metamask #79

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3ac1d71
Add CallContract (and helper methods) for calling contracts via Metam…
blevinstein Jan 15, 2022
087712d
Merge branch 'ChainSafe:main' into main
blevinstein Apr 10, 2022
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36 changes: 35 additions & 1 deletion Web3Unity/Scripts/Library/WebGL/Web3GL.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,18 @@ public class Web3GL
[DllImport("__Internal")]
private static extern void SetContractResponse(string value);

[DllImport("__Internal")]
private static extern void CallContractJs(string method, string abi, string contract, string args);

[DllImport("__Internal")]
private static extern void ResetCallContractResponse();

[DllImport("__Internal")]
private static extern string CallContractResponse();

[DllImport("__Internal")]
private static extern string CallContractError();

[DllImport("__Internal")]
private static extern void SendTransactionJs(string to, string value, string gasLimit, string gasPrice);

Expand All @@ -38,6 +50,28 @@ public class Web3GL
[DllImport("__Internal")]
private static extern int GetNetwork();

async public static Task<string> CallContract(string _method, string _abi, string _contract, string _args, float _waitSeconds = 0.1f)
{
ResetCallContractResponse();
CallContractJs(_method, _abi, _contract, _args);
string response = CallContractResponse();
string error = CallContractError();
while (response == "" && error == "")
{
await new WaitForSeconds(_waitSeconds);
response = CallContractResponse();
error = CallContractError();
}
ResetCallContractResponse();
if (error.Length > 0)
{
throw new Exception(error);
} else
{
return response;
}
}

// this function will create a metamask tx for user to confirm.
async public static Task<string> SendContract(string _method, string _abi, string _contract, string _args, string _value, string _gasLimit = "", string _gasPrice = "")
{
Expand Down Expand Up @@ -113,4 +147,4 @@ public static int Network()
}

}
#endif
#endif