// Copyright 2023 The Casdoor Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import * as React from "react";
import {Appbar, Avatar, Button, Menu, Text} from "react-native-paper";
import UserContext from "./UserContext";
import {View} from "react-native";
import CasdoorLoginPage, {CasdoorLogout} from "./CasdoorLoginPage";

const Header = () => {
  const {userInfo, setUserInfo} = React.useContext(UserContext);
  const [showLoginPage, setShowLoginPage] = React.useState(false);
  const [menuVisible, setMenuVisible] = React.useState(false);
  const openMenu = () => setMenuVisible(true);
  const closeMenu = () => setMenuVisible(false);
  const handleMenuLogoutClicked = () => {
    handleCasdoorLogout();
    closeMenu();
  };

  const handleCasdoorLogin = () => {
    setShowLoginPage(true);
  };
  const handleCasdoorLogout = () => {
    CasdoorLogout();
    setUserInfo(null);
  };
  const handleHideLoginPage = () => {
    setShowLoginPage(false);
  };
  return (
    <View>
      <Appbar.Header style={{height: 40}}>
        <Appbar.Content title="Casdoor" />
        <Menu
          visible={menuVisible}
          anchor={
            <Button
              style={{marginRight: 10, backgroundColor: "transparent", height: 40}}
              onPress={userInfo === null ? handleCasdoorLogin : openMenu}
            >
              {
                userInfo === null ?
                  null :
                  <Avatar.Image
                    size={32}
                    source={{uri: userInfo.avatar}}
                    style={{marginRight: 10, backgroundColor: "transparent"}}
                  />
              }
              <Text style={{marginRight: 10}} variant="titleMedium">
                {userInfo === null ? "Login" : userInfo.name}
              </Text>
            </Button>
          }
          onDismiss={closeMenu}
        >
          <Menu.Item onPress={() => handleMenuLogoutClicked()} title="Logout" />
        </Menu>
      </Appbar.Header>
      {showLoginPage && <CasdoorLoginPage onWebviewClose={handleHideLoginPage} />}
    </View>
  );
};

export default Header;