import {
  Avatar,
  Divider,
  Modal,
  Stack,
  Text,
  Title,
  UnstyledButton,
  useMantineTheme,
} from "@mantine/core";
import "./Sidebar.css";
import {
  IconDevicesPc,
  IconFileDescription,
  IconFlaskFilled,
  IconLogout,
  IconSettings2,
  IconUsers,
  type Icon,
  type IconProps,
} from "@tabler/icons-react";
import {
  Link,
  useLocation,
  useNavigate,
  type NavigateFunction,
} from "react-router";
import { useEffect, useState, type ForwardRefExoticComponent } from "react";
import { routes } from "Routes/Routes";
import keycloak from "Api/Keycloak/Keycloak";
import { useAuthenticationStore } from "Stores/AuthenticationStore";
import CustomButton from "Components/CustomButton/CustomButton";

interface SubtleLinkButtonProps {
  link: string;
  Icon: ForwardRefExoticComponent<IconProps & React.RefAttributes<Icon>>;
  text: string;
  color: string;
  selected?: boolean;
  nav: NavigateFunction;
}

function SubtleLinkButton(props: SubtleLinkButtonProps) {
  return (
    <Link to={props.link} className="invisible_link">
      <CustomButton
        icon={<props.Icon color={props.color} size={20} />}
        style="subtle"
        color={props.selected ? props.color : "contrast"}
        text={props.text}
        textAlign="left"
        onClick={() => {
          props.nav(props.link);
        }}
      />
    </Link>
  );
}

function Sidebar() {
  const { profile, set_profile_picture_path, profile_picture_path } =
    useAuthenticationStore();
  const [open, set_open] = useState(false);
  const theme = useMantineTheme();
  const location = useLocation(); // get current URL
  const navigate = useNavigate();

  useEffect(() => {
    if (!profile) return;

    const fetchAvatar = async () => {
      try {
        const response = await fetch(
          `${import.meta.env.VITE_QUANTUM_BACKEND_URL}/user/serve/${profile.id}`,
          {
            headers: {
              Authorization: `Bearer ${keycloak.token}`,
            },
          },
        );

        if (response.ok) {
          const blob = await response.blob();
          const url = URL.createObjectURL(blob);
          set_profile_picture_path(url);
        }
      } catch (error) {
        console.error("Failed to load avatar:", error);
      }
    };

    fetchAvatar();
  }, [profile]);

  return (
    <div className="sidebar">
      <Modal
        opened={open}
        onClose={() => set_open(false)}
        title=<Title size="lg">Выйти?</Title>
        centered
        withCloseButton={false}
        size="auto"
      >
        <div className="sidebar_bottom_bottom">
          <CustomButton
            text="Подтвердить"
            onClick={() =>
              keycloak.logout({
                redirectUri: window.location.origin,
              })
            }
            textSize="lg"
            color="contrast"
          ></CustomButton>
          <CustomButton
            onClick={() => set_open(false)}
            text="Отменить"
            textSize="lg"
            style="outline"
            color="contrast"
          ></CustomButton>
        </div>
      </Modal>

      <div className="sidebar_top">
        <SubtleLinkButton
          link={routes.ExperimentsPage.path}
          Icon={IconFlaskFilled}
          text="Эксперименты"
          color={theme.colors.teal[7]}
          selected={location.pathname.startsWith(routes.ExperimentsPage.path)}
          nav={navigate}
        />
        <SubtleLinkButton
          link={routes.MachinesPage.path}
          Icon={IconDevicesPc}
          text="Вычислительные системы"
          color={theme.colors.violet[7]}
          selected={location.pathname.startsWith(routes.MachinesPage.path)}
          nav={navigate}
        />
        <SubtleLinkButton
          link={routes.TeamsPage.path}
          Icon={IconUsers}
          text="Команды"
          color={theme.colors.grape[7]}
          selected={location.pathname.startsWith(routes.TeamsPage.path)}
          nav={navigate}
        />
        <SubtleLinkButton
          link={routes.DocumentationPage.path}
          Icon={IconFileDescription}
          text="Документация"
          color={theme.colors.blue[7]}
          selected={location.pathname.startsWith(routes.DocumentationPage.path)}
          nav={navigate}
        />
      </div>
      <div className="sidebar_bottom">
        {keycloak.authenticated && (
          <>
            <div className="sidebar_bottom_top">
              <Avatar radius="xl" src={profile_picture_path} />
              <Stack className="userInfo">
                <Text size="md">{profile?.username}</Text>
                <Text size="sm" c="dimmed" truncate="end">
                  {profile?.email}
                </Text>
              </Stack>
            </div>
            <Divider
              color="secondaryContrast"
              style={{ width: "100%", height: "5px", margin: "5px" }}
            />
            <div className="sidebar_bottom_bottom">
              <CustomButton
                style="subtle"
                icon={<IconSettings2 size={26} />}
                text="Настройки"
                color="contrast"
                textSize="lg"
                onClick={() => {
                  navigate(routes.SettingsPage.path);
                }}
              />
              <CustomButton
                style="subtle"
                icon={<IconLogout size={26} />}
                text="Выйти"
                textSize="lg"
                color="contrast"
                onClick={() => {
                  set_open(true);
                }}
              />
            </div>
          </>
        )}
        {!keycloak.authenticated && (
          <UnstyledButton onClick={() => keycloak.login()}>
            Войти / Зарегестрироваться
          </UnstyledButton>
        )}
      </div>
    </div>
  );
}

export default Sidebar;