import { useWeb3Provider } from "../useWeb3Provider/useWeb3Provider";
import { useEffect, useMemo } from "react";
import { config } from "../../config";
import {
  ReliquaryABI__factory,
  DepositHelper2ABI__factory,
} from "digit-shared/src/types/generatedContractTypes";
/**
 * A hook to access our contracts
 * Warning!: use only where you know the user will have connected their wallet (conditionally rendered components)
 */
export const useContracts = () => {
  const { signer } = useWeb3Provider();

  useEffect(() => {
    if (
      !config?.reliquaryContractAddress ||
      !config.reliquaryHelperContractAddress
    ) {
      throw new Error(
        "Missing config. Require contract addresses as reliquaryContractAddress & reliquaryHelperContractAddress in chain config!"
      );
    }
  }, []);

  const contracts = useMemo(() => {
    if (
      config == undefined ||
      config.reliquaryContractAddress == undefined ||
      config.reliquaryHelperContractAddress == undefined
    ) {
      return null;
    }

    const contracts = signer
      ? {
          reliquary: ReliquaryABI__factory.connect(
            config!.reliquaryContractAddress!,
            signer
          ),
          depositHelper: DepositHelper2ABI__factory.connect(
            config!.reliquaryHelperContractAddress!,
            signer
          ),
        }
      : null;
    return contracts;
  }, [signer, config]);

  if (!contracts) {
    throw new Error(
      "Contracts have not been initialized. Use the useConnect hook to initialize the contracts"
    );
  }

  return contracts!;
};