import React, { useContext, useState } from "react";
import { ClientList } from "./clients/ClientList";
import { DataLoader } from "./components/data-loader/DataLoader";
import { HttpClientContext } from "./http-service/HttpClientContext";
import { ClientRepresentation } from "./model/client-model";
import { Page, PageSection, Button } from "@patternfly/react-core";
import { Header } from "./PageHeader";
import { PageNav } from "./PageNav";
import { KeycloakContext } from "./auth/KeycloakContext";
import { TableToolbar } from "./components/table-toolbar/TableToolbar";

import { Help } from "./components/help-enabler/HelpHeader";
import {
  BrowserRouter as Router,
  Route,
  Switch,
  useHistory,
} from "react-router-dom";
import { NewRealmForm } from "./forms/realm/NewRealmForm";
import { NewClientForm } from "./forms/client/NewClientForm";

export const App = () => {
  const [max, setMax] = useState(10);
  const [first, setFirst] = useState(0);
  const httpClient = useContext(HttpClientContext);
  const keycloak = useContext(KeycloakContext);

  const loader = async () => {
    return await httpClient
      ?.doGet("/admin/realms/master/clients", { params: { first, max } })
      .then((r) => r.data as ClientRepresentation[]);
  };

  const Clients = () => {
    const history = useHistory();
    return (
      <DataLoader loader={loader}>
        {(clients) => (
          <TableToolbar
            count={clients!.length}
            first={first}
            max={max}
            onNextClick={(f) => setFirst(f)}
            onPreviousClick={(f) => setFirst(f)}
            onPerPageSelect={(f, m) => {
              setFirst(f);
              setMax(m);
            }}
            toolbarItem={
              <>
                <Button onClick={() => history.push("/add-client")}>
                  Create client
                </Button>
                <Button variant="link">Import client</Button>
              </>
            }
          >
            <ClientList
              clients={clients}
              baseUrl={keycloak!.authServerUrl()!}
            />
          </TableToolbar>
        )}
      </DataLoader>
    );
  };
  return (
    <Router>
      <Help>
        <Page header={<Header />} isManagedSidebar sidebar={<PageNav />}>
          <PageSection variant="light">
            <Switch>
              <Route exact path="/add-realm" component={NewRealmForm}></Route>
              <Route exact path="/add-client" component={NewClientForm}></Route>
              <Route exact path="/" component={Clients}></Route>
            </Switch>
          </PageSection>
        </Page>
      </Help>
    </Router>
  );
};