import { mdiFamilyTree } from "@mdi/js";
import Icon from "@mdi/react";
import SettingsIcon from "@mui/icons-material/Settings";
import { Box, Button } from "@mui/material";
import AppBar from "@mui/material/AppBar";
import Menu from "@mui/material/Menu";
import MenuItem from "@mui/material/MenuItem";
import Toolbar from "@mui/material/Toolbar";
import Typography from "@mui/material/Typography";
import * as React from "react";
import { Link, Outlet, useNavigate } from "react-router-dom";
import { useAuth } from "../App";
import { AuthApi } from "../api/AuthApi";
import { User, UserApi } from "../api/UserApi";
import { AsyncWidget } from "./AsyncWidget";
import { RouterLink } from "./RouterLink";
import { DarkThemeButton } from "./DarkThemeButton";

interface UserContext {
  user: User;
  reloadUserInfo: () => void;
}

const UserContextK = React.createContext<UserContext | null>(null);

export function BaseAuthenticatedPage(): React.ReactElement {
  const [user, setUser] = React.useState<null | User>(null);

  const auth = useAuth();
  const navigate = useNavigate();

  const [anchorEl, setAnchorEl] = React.useState<null | HTMLElement>(null);

  const load = async () => {
    setUser(await UserApi.GetUserInfo());
  };

  const handleMenu = (event: React.MouseEvent<HTMLElement>) => {
    setAnchorEl(event.currentTarget);
  };

  const handleCloseMenu = () => {
    setAnchorEl(null);
  };

  const signOut = () => {
    handleCloseMenu();
    AuthApi.SignOut();
    navigate("/");
    auth.setSignedIn(false);
  };

  return (
    <AsyncWidget
      loadKey="1"
      load={load}
      errMsg="Echec du chargement des informations utilisateur !"
      errAdditionalElement={() => (
        <>
          <Button onClick={signOut}>Déconnexion</Button>
        </>
      )}
      build={() => (
        <UserContextK.Provider
          value={{
            user: user!,
            reloadUserInfo: load,
          }}
        >
          <Box
            component="div"
            sx={{
              minHeight: "100vh",
              display: "flex",
              flexDirection: "column",
              backgroundColor: (theme) =>
                theme.palette.mode === "light"
                  ? theme.palette.grey[100]
                  : theme.palette.grey[900],
              color: (theme) =>
                theme.palette.mode === "light"
                  ? theme.palette.grey[900]
                  : theme.palette.grey[100],
            }}
          >
            <AppBar position="sticky">
              <Toolbar>
                <Icon
                  path={mdiFamilyTree}
                  size={1}
                  style={{ marginRight: "1rem" }}
                />

                <Typography variant="h6" component="div" sx={{ flexGrow: 1 }}>
                  <RouterLink to="/">GeneIT</RouterLink>
                </Typography>

                <div>
                  <DarkThemeButton />

                  <Button size="large" color="inherit">
                    {user!.name}
                  </Button>

                  <Button
                    size="large"
                    aria-label="account of current user"
                    aria-controls="menu-appbar"
                    aria-haspopup="true"
                    onClick={handleMenu}
                    color="inherit"
                  >
                    <SettingsIcon />
                  </Button>
                  <Menu
                    id="menu-appbar"
                    anchorEl={anchorEl}
                    anchorOrigin={{
                      vertical: "top",
                      horizontal: "right",
                    }}
                    keepMounted
                    transformOrigin={{
                      vertical: "top",
                      horizontal: "right",
                    }}
                    open={Boolean(anchorEl)}
                    onClose={handleCloseMenu}
                  >
                    <Link
                      to="/profile"
                      style={{ color: "inherit", textDecoration: "none" }}
                    >
                      <MenuItem onClick={handleCloseMenu}>Profil</MenuItem>
                    </Link>
                    <MenuItem onClick={signOut}>Déconnexion</MenuItem>
                  </Menu>
                </div>
              </Toolbar>
            </AppBar>
            <Outlet />
          </Box>
        </UserContextK.Provider>
      )}
    />
  );
}

export function useUser(): UserContext {
  return React.useContext(UserContextK)!;
}