/*
 This file is part of GNU Taler
 (C) 2020 Taler Systems S.A.

 GNU Taler is free software; you can redistribute it and/or modify it under the
 terms of the GNU General Public License as published by the Free Software
 Foundation; either version 3, or (at your option) any later version.

 GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

 You should have received a copy of the GNU General Public License along with
 GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */

/**
 * Main entry point for extension pages.
 *
 * @author Florian Dold <dold@taler.net>
 */

import { setupI18n } from "@gnu-taler/taler-util";
import { createHashHistory } from "history";
import { render, h, VNode } from "preact";
import Router, { route, Route, getCurrentUrl } from "preact-router";
import { useEffect, useState } from "preact/hooks";
import { DevContextProvider } from "./context/devContext";
import { useTalerActionURL } from "./hooks/useTalerActionURL";
import { strings } from "./i18n/strings";
import { BackupPage } from "./popup/BackupPage";
import { BalancePage } from "./popup/BalancePage";
import { DeveloperPage as DeveloperPage } from "./popup/Debug";
import { HistoryPage } from "./popup/History";
import {
  Pages, WalletNavBar
} from "./NavigationBar";
import { ProviderAddPage } from "./popup/ProviderAddPage";
import { ProviderDetailPage } from "./popup/ProviderDetailPage";
import { SettingsPage } from "./popup/Settings";
import { TalerActionFound } from "./popup/TalerActionFound";

function main(): void {
  try {
    const container = document.getElementById("container");
    if (!container) {
      throw Error("container not found, can't mount page contents");
    }
    render(<Application />, container);
  } catch (e) {
    console.error("got error", e);
    if (e instanceof Error) {
      document.body.innerText = `Fatal error: "${e.message}".  Please report this bug at https://bugs.gnunet.org/.`;
    }
  }
}

setupI18n("en-US", strings);

if (document.readyState === "loading") {
  document.addEventListener("DOMContentLoaded", main);
} else {
  main();
}

function Application() {
  const [talerActionUrl, setDismissed] = useTalerActionURL()

  if (talerActionUrl) {
    return <div>
      <WalletNavBar />
      <div style={{ width: 400, height: 290 }}>
        <TalerActionFound url={talerActionUrl} onDismiss={setDismissed} />
      </div>
    </div>
  }

  return (
    <div>
      <DevContextProvider>
        <WalletNavBar />
        <div style={{ width: 400, height: 290 }}>
          <Router history={createHashHistory()}>
            <Route path={Pages.balance} component={BalancePage}
              goToWalletManualWithdraw={() => goToWalletPage(Pages.manual_withdraw)}
            />
            <Route path={Pages.settings} component={SettingsPage} />
            <Route path={Pages.dev} component={DeveloperPage} />

            <Route path={Pages.transaction}
              component={({ tid }: { tid: string }) => goToWalletPage(Pages.transaction.replace(':tid', tid))}
            />

            <Route path={Pages.history} component={HistoryPage} />
            <Route path={Pages.backup} component={BackupPage}
              onAddProvider={() => {
                route(Pages.provider_add)
              }}
            />
            <Route path={Pages.provider_detail} component={ProviderDetailPage}
              onBack={() => {
                route(Pages.backup)
              }}
            />
            <Route path={Pages.provider_add} component={ProviderAddPage}
              onBack={() => {
                route(Pages.backup)
              }}
            />
            <Route default component={Redirect} to={Pages.balance} />
          </Router>
        </div>
      </DevContextProvider>
    </div>
  );
}

function goToWalletPage(page: Pages | string): null {
  chrome.tabs.create({
    active: true,
    url: chrome.extension.getURL(`/static/wallet.html#${page}`),
  })
  return null
}

function Redirect({ to }: { to: string }): null {
  useEffect(() => {
    route(to, true)
  })
  return null
}