import { Outlet, useNavigate, useLocation } from "react-router-dom";
import {
  AppShell,
  Burger,
  Group,
  Text,
  NavLink,
  Button,
  Avatar,
  Stack,
  Image,
  ActionIcon,
  Tooltip,
  useMantineColorScheme,
} from "@mantine/core";
import { useDisclosure } from "@mantine/hooks";
import {
  IconDashboard,
  IconUsers,
  IconWebhook,
  IconBrandWhatsapp,
  IconSend,
  IconBuildingStore,
  IconTemplate,
  IconCategory,
  IconArrowsShuffle,
  IconFileText,
  IconDatabase,
  IconLogout,
  IconSun,
  IconMoon,
} from "@tabler/icons-react";
import { useAuthStore } from "../stores/authStore";

export default function DashboardLayout() {
  const { user, logout } = useAuthStore();
  const { colorScheme, setColorScheme } = useMantineColorScheme();
  const navigate = useNavigate();
  const location = useLocation();
  const [opened, { toggle }] = useDisclosure();

  const handleLogout = () => {
    logout();
    navigate("/login");
  };

  const isActive = (path: string) => location.pathname === path;
  const isAnyActive = (paths: string[]) =>
    paths.some((path) => location.pathname === path);
  const displayName =
    user?.username?.trim() ||
    user?.full_name?.trim() ||
    user?.email?.trim() ||
    "User";
  const displayInitial = displayName[0]?.toUpperCase() || "U";
  const logoSrc = `${import.meta.env.BASE_URL}logo.png`;
  const swaggerIconSrc = `${import.meta.env.BASE_URL}swagger-icon.svg`;
  const isDark = colorScheme === "dark";

  const toggleTheme = () => {
    if (colorScheme === "auto") {
      const prefersDark = window.matchMedia("(prefers-color-scheme: dark)").matches;
      setColorScheme(prefersDark ? "light" : "dark");
      return;
    }

    setColorScheme(isDark ? "light" : "dark");
  };

  return (
    <AppShell
      header={{ height: 60 }}
      navbar={{
        width: 280,
        breakpoint: "sm",
        collapsed: { mobile: !opened },
      }}
      padding="md"
    >
      <AppShell.Header>
        <Group h="100%" px="md" justify="space-between">
          <Group>
            <Burger
              opened={opened}
              onClick={toggle}
              hiddenFrom="sm"
              size="sm"
            />
            <Image src={logoSrc} alt="WhatsHooked logo" w={24} h={24} fit="contain" />
            <Text size="xl" fw={700}>
              WhatsHooked
            </Text>
          </Group>
          <Group>
            <Text size="sm" c="dimmed">
              {displayName}
            </Text>
            <Avatar color="blue" radius="xl" size="sm">
              {displayInitial}
            </Avatar>
          </Group>
        </Group>
      </AppShell.Header>

      <AppShell.Navbar p="md">
        <AppShell.Section grow>
          <Stack gap="xs">
            <NavLink
              href="/dashboard"
              label="Dashboard"
              leftSection={<IconDashboard size={20} stroke={1.5} />}
              active={isActive("/dashboard")}
              onClick={(e) => {
                e.preventDefault();
                navigate("/dashboard");
                if (opened) toggle();
              }}
            />
            <NavLink
              href="/users"
              label="Users"
              leftSection={<IconUsers size={20} stroke={1.5} />}
              active={isActive("/users")}
              onClick={(e) => {
                e.preventDefault();
                navigate("/users");
                if (opened) toggle();
              }}
            />
            <NavLink
              href="/hooks"
              label="Hooks"
              leftSection={<IconWebhook size={20} stroke={1.5} />}
              active={isActive("/hooks")}
              onClick={(e) => {
                e.preventDefault();
                navigate("/hooks");
                if (opened) toggle();
              }}
            />
            <NavLink
              label="WhatsApp Accounts"
              leftSection={<IconBrandWhatsapp size={20} stroke={1.5} />}
              defaultOpened
              active={isAnyActive([
                "/accounts",
                "/whatsapp-business",
                "/business-templates",
                "/catalogs",
                "/flows",
              ])}
            >
              <NavLink
                href="/accounts"
                label="Account List"
                active={isActive("/accounts")}
                leftSection={
                  <IconBrandWhatsapp size={20} stroke={1.5} color="green" />
                }
                onClick={(e) => {
                  e.preventDefault();
                  navigate("/accounts");
                  if (opened) toggle();
                }}
              />
              <NavLink
                label="Business Management"
                leftSection={
                  <IconBrandWhatsapp size={20} stroke={1.5} color="orange" />
                }
                defaultOpened
                active={isAnyActive([
                  "/whatsapp-business",
                  "/business-templates",
                  "/catalogs",
                  "/flows",
                ])}
              >
                <NavLink
                  href="/whatsapp-business"
                  label="Business Management Tools"
                  active={isActive("/whatsapp-business")}
                  leftSection={<IconBuildingStore size={16} stroke={1.5} />}
                  onClick={(e) => {
                    e.preventDefault();
                    navigate("/whatsapp-business");
                    if (opened) toggle();
                  }}
                />
                <NavLink
                  href="/business-templates"
                  label="Templates"
                  leftSection={<IconTemplate size={16} stroke={1.5} />}
                  active={isActive("/business-templates")}
                  onClick={(e) => {
                    e.preventDefault();
                    navigate("/business-templates");
                    if (opened) toggle();
                  }}
                />
                <NavLink
                  href="/catalogs"
                  label="Catalogs"
                  leftSection={<IconCategory size={16} stroke={1.5} />}
                  active={isActive("/catalogs")}
                  onClick={(e) => {
                    e.preventDefault();
                    navigate("/catalogs");
                    if (opened) toggle();
                  }}
                />
                <NavLink
                  href="/flows"
                  label="Flows"
                  leftSection={<IconArrowsShuffle size={16} stroke={1.5} />}
                  active={isActive("/flows")}
                  onClick={(e) => {
                    e.preventDefault();
                    navigate("/flows");
                    if (opened) toggle();
                  }}
                />
              </NavLink>
            </NavLink>
            <NavLink
              href="/send-message"
              label="Send Message"
              leftSection={<IconSend size={20} stroke={1.5} color="green" />}
              active={isActive("/send-message")}
              onClick={(e) => {
                e.preventDefault();
                navigate("/send-message");
                if (opened) toggle();
              }}
            />
            <NavLink
              href="/event-logs"
              label="Event Logs"
              leftSection={
                <IconFileText size={20} stroke={1.5} color="maroon" />
              }
              active={isActive("/event-logs")}
              onClick={(e) => {
                e.preventDefault();
                navigate("/event-logs");
                if (opened) toggle();
              }}
            />
            <NavLink
              href="/message-cache"
              label="Message Cache"
              leftSection={
                <IconDatabase size={20} stroke={1.5} color="indigo" />
              }
              active={isActive("/message-cache")}
              onClick={(e) => {
                e.preventDefault();
                navigate("/message-cache");
                if (opened) toggle();
              }}
            />
            <NavLink
              href="/sw"
              label="Swagger"
              leftSection={
                <Image src={swaggerIconSrc} alt="Swagger" w={18} h={18} fit="contain" />
              }
              active={isActive("/sw")}
              onClick={(e) => {
                e.preventDefault();
                navigate("/sw");
                if (opened) toggle();
              }}
            />
          </Stack>
        </AppShell.Section>

        <AppShell.Section>
          <Stack gap="xs">
            <Group justify="space-between" px="sm">
              <Tooltip label={isDark ? "Switch to light theme" : "Switch to dark theme"}>
                <ActionIcon
                  variant="light"
                  size="lg"
                  onClick={toggleTheme}
                  aria-label={isDark ? "Switch to light theme" : "Switch to dark theme"}
                >
                  {isDark ? <IconSun size={18} /> : <IconMoon size={18} />}
                </ActionIcon>
              </Tooltip>
              <div>
                <Text size="sm" fw={500}>
                  {displayName}
                </Text>
                <Text size="xs" c="dimmed">
                  {user?.role || "user"}
                </Text>
              </div>
            </Group>
            <Button
              leftSection={<IconLogout size={16} />}
              variant="light"
              color="red"
              fullWidth
              onClick={handleLogout}
            >
              Logout
            </Button>
          </Stack>
        </AppShell.Section>
      </AppShell.Navbar>

      <AppShell.Main>
        <Outlet />
      </AppShell.Main>
    </AppShell>
  );
}