import React, { useMemo, useContext } from "react";
import { useParams, Routes, Route } from "react-router-dom";
import { Tab } from "@headlessui/react";
import StandardFrame from "./StandardFrame";
import StandardSubtitle from "./StandardSubtitle";
import ContentFrame from "./ContentFrame";
import NavTab from "./components/NavTab";
import { RuntimeContext } from "./useRuntime";
import { SelectionContext, useSelection } from "./useSelection";
import { useInternalOperations, useTxData } from "./useErigonHooks";
import { useETHUSDOracle } from "./usePriceOracle";
import { useAppConfigContext } from "./useAppConfig";
import { useSourcify, useTransactionDescription } from "./sourcify/useSourcify";
import { SelectedTransactionContext } from "./useSelectedTransaction";

const Details = React.lazy(
  () =>
    import(
      /* webpackChunkName: "txdetails", webpackPrefetch: true */
      "./transaction/Details"
    )
);
const Logs = React.lazy(
  () =>
    import(
      /* webpackChunkName: "txlogs", webpackPrefetch: true */ "./transaction/Logs"
    )
);
const Trace = React.lazy(
  () =>
    import(
      /* webpackChunkName: "txtrace", webpackPrefetch: true */ "./transaction/Trace"
    )
);

const Transaction: React.FC = () => {
  const { provider } = useContext(RuntimeContext);
  const { txhash } = useParams();
  if (txhash === undefined) {
    throw new Error("txhash couldn't be undefined here");
  }

  const txData = useTxData(provider, txhash);
  const internalOps = useInternalOperations(provider, txData);
  const sendsEthToMiner = useMemo(() => {
    if (!txData || !internalOps) {
      return false;
    }

    for (const t of internalOps) {
      if (t.to === txData.confirmedData?.miner) {
        return true;
      }
    }
    return false;
  }, [txData, internalOps]);

  const selectionCtx = useSelection();

  const blockETHUSDPrice = useETHUSDOracle(
    provider,
    txData?.confirmedData?.blockNumber
  );

  const { sourcifySource } = useAppConfigContext();
  const metadata = useSourcify(
    txData?.to,
    provider?.network.chainId,
    sourcifySource
  );
  const txDesc = useTransactionDescription(metadata, txData);

  return (
    <SelectedTransactionContext.Provider value={txData}>
      <StandardFrame>
        <StandardSubtitle>Transaction Details</StandardSubtitle>
        {txData === null && (
          <ContentFrame>
            <div className="py-4 text-sm">
              Transaction <span className="font-hash">{txhash}</span> not found.
            </div>
          </ContentFrame>
        )}
        {txData && (
          <SelectionContext.Provider value={selectionCtx}>
            <Tab.Group>
              <Tab.List className="flex space-x-2 border-l border-r border-t rounded-t-lg bg-white">
                <NavTab href=".">Overview</NavTab>
                {txData.confirmedData?.blockNumber !== undefined && (
                  <NavTab href="logs">
                    Logs
                    {txData && ` (${txData.confirmedData?.logs?.length ?? 0})`}
                  </NavTab>
                )}
                <NavTab href="trace">Trace</NavTab>
              </Tab.List>
            </Tab.Group>
            <React.Suspense fallback={null}>
              <Routes>
                <Route
                  index
                  element={
                    <Details
                      txData={txData}
                      txDesc={txDesc}
                      toMetadata={metadata}
                      userDoc={metadata?.output.userdoc}
                      devDoc={metadata?.output.devdoc}
                      internalOps={internalOps}
                      sendsEthToMiner={sendsEthToMiner}
                      ethUSDPrice={blockETHUSDPrice}
                    />
                  }
                />
                <Route
                  path="logs"
                  element={<Logs txData={txData} metadata={metadata} />}
                />
                <Route path="trace" element={<Trace txData={txData} />} />
              </Routes>
            </React.Suspense>
          </SelectionContext.Provider>
        )}
      </StandardFrame>
    </SelectedTransactionContext.Provider>
  );
};

export default Transaction;