import { Link, usePage, router } from '@inertiajs/react';
import {
    BookOpen,
    Folder,
    LayoutGrid,
    Menu,
    Search,
    Bell,
    AlertTriangle,
    Info as InfoIcon,
    ShieldAlert,
    Check,
} from 'lucide-react';
import * as React from 'react';
import { toast } from 'sonner';
import AppLogo from '@/components/app-logo';
import AppLogoIcon from '@/components/app-logo-icon';
import { Breadcrumbs } from '@/components/breadcrumbs';
import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
import { Button } from '@/components/ui/button';
import {
    DropdownMenu,
    DropdownMenuContent,
    DropdownMenuTrigger,
} from '@/components/ui/dropdown-menu';
import {
    NavigationMenu,
    NavigationMenuItem,
    NavigationMenuList,
    navigationMenuTriggerStyle,
} from '@/components/ui/navigation-menu';
import {
    Sheet,
    SheetContent,
    SheetHeader,
    SheetTitle,
    SheetTrigger,
} from '@/components/ui/sheet';
import {
    Tooltip,
    TooltipContent,
    TooltipTrigger,
} from '@/components/ui/tooltip';
import { UserMenuContent } from '@/components/user-menu-content';
import { useCurrentUrl } from '@/hooks/use-current-url';
import { useInitials } from '@/hooks/use-initials';
import { cn, toUrl } from '@/lib/utils';
import { dashboard } from '@/routes';
import type { BreadcrumbItem, NavItem } from '@/types';

type Props = {
    breadcrumbs?: BreadcrumbItem[];
};

const mainNavItems: NavItem[] = [
    {
        title: 'Dashboard',
        href: dashboard(),
        icon: LayoutGrid,
    },
];

const rightNavItems: NavItem[] = [
    {
        title: 'Repository',
        href: 'https://github.com/zeromsg/zeromsg-community',
        icon: Folder,
    },
    {
        title: 'Documentation',
        href: 'https://github.com/zeromsg/zeromsg-community#readme',
        icon: BookOpen,
    },
];

const activeItemStyles =
    'text-neutral-900 dark:bg-neutral-800 dark:text-neutral-100';

export function AppHeader({ breadcrumbs = [] }: Props) {
    const page = usePage();
    const { auth, notifications = [], unshownToasts = [] } = page.props as any;
    const getInitials = useInitials();
    const { isCurrentUrl, whenCurrentUrl } = useCurrentUrl();

    React.useEffect(() => {
        if (unshownToasts && unshownToasts.length > 0) {
            unshownToasts.forEach((toastItem: any) => {
                const message = `${toastItem.title}: ${toastItem.message}`;

                if (toastItem.type === 'error') {
                    toast.error(message, { duration: 8000 });
                } else if (toastItem.type === 'warning') {
                    toast.warning(message, { duration: 6000 });
                } else {
                    toast.info(message, { duration: 5000 });
                }
            });
        }
    }, [unshownToasts]);

    return (
        <>
            <div className="border-b border-sidebar-border/80">
                <div className="mx-auto flex h-16 items-center px-4 md:max-w-7xl">
                    {/* Mobile Menu */}
                    <div className="lg:hidden">
                        <Sheet>
                            <SheetTrigger asChild>
                                <Button
                                    variant="ghost"
                                    size="icon"
                                    className="mr-2 h-[34px] w-[34px]"
                                >
                                    <Menu className="h-5 w-5" />
                                </Button>
                            </SheetTrigger>
                            <SheetContent
                                side="left"
                                className="flex h-full w-64 flex-col items-stretch justify-between bg-sidebar"
                            >
                                <SheetTitle className="sr-only">
                                    Navigation menu
                                </SheetTitle>
                                <SheetHeader className="flex justify-start text-left">
                                    <AppLogoIcon className="h-6 w-6 fill-current text-black dark:text-white" />
                                </SheetHeader>
                                <div className="flex h-full flex-1 flex-col space-y-4 p-4">
                                    <div className="flex h-full flex-col justify-between text-sm">
                                        <div className="flex flex-col space-y-4">
                                            {mainNavItems.map((item) => (
                                                <Link
                                                    key={item.title}
                                                    href={item.href}
                                                    className="flex items-center space-x-2 font-medium"
                                                >
                                                    {item.icon && (
                                                        <item.icon className="h-5 w-5" />
                                                    )}
                                                    <span>{item.title}</span>
                                                </Link>
                                            ))}
                                        </div>

                                        <div className="flex flex-col space-y-4">
                                            {rightNavItems.map((item) => (
                                                <a
                                                    key={item.title}
                                                    href={toUrl(item.href)}
                                                    target="_blank"
                                                    rel="noopener noreferrer"
                                                    className="flex items-center space-x-2 font-medium"
                                                >
                                                    {item.icon && (
                                                        <item.icon className="h-5 w-5" />
                                                    )}
                                                    <span>{item.title}</span>
                                                </a>
                                            ))}
                                        </div>
                                    </div>
                                </div>
                            </SheetContent>
                        </Sheet>
                    </div>

                    <Link
                        href={dashboard()}
                        prefetch
                        className="flex items-center space-x-2"
                    >
                        <AppLogo />
                    </Link>

                    {/* Desktop Navigation */}
                    <div className="ml-6 hidden h-full items-center space-x-6 lg:flex">
                        <NavigationMenu className="flex h-full items-stretch">
                            <NavigationMenuList className="flex h-full items-stretch space-x-2">
                                {mainNavItems.map((item, index) => (
                                    <NavigationMenuItem
                                        key={index}
                                        className="relative flex h-full items-center"
                                    >
                                        <Link
                                            href={item.href}
                                            className={cn(
                                                navigationMenuTriggerStyle(),
                                                whenCurrentUrl(
                                                    item.href,
                                                    activeItemStyles,
                                                ),
                                                'h-9 cursor-pointer px-3',
                                            )}
                                        >
                                            {item.icon && (
                                                <item.icon className="mr-2 h-4 w-4" />
                                            )}
                                            {item.title}
                                        </Link>
                                        {isCurrentUrl(item.href) && (
                                            <div className="absolute bottom-0 left-0 h-0.5 w-full translate-y-px bg-black dark:bg-white"></div>
                                        )}
                                    </NavigationMenuItem>
                                ))}
                            </NavigationMenuList>
                        </NavigationMenu>
                    </div>

                    <div className="ml-auto flex items-center space-x-2">
                        <div className="relative flex items-center space-x-1">
                            <Button
                                variant="ghost"
                                size="icon"
                                className="group h-9 w-9 cursor-pointer"
                            >
                                <Search className="!size-5 opacity-80 group-hover:opacity-100" />
                            </Button>
                            <div className="ml-1 hidden gap-1 lg:flex">
                                {rightNavItems.map((item) => (
                                    <Tooltip key={item.title}>
                                        <TooltipTrigger>
                                            <a
                                                href={toUrl(item.href)}
                                                target="_blank"
                                                rel="noopener noreferrer"
                                                className="group inline-flex h-9 w-9 items-center justify-center rounded-md bg-transparent p-0 text-sm font-medium text-accent-foreground ring-offset-background transition-colors hover:bg-accent hover:text-accent-foreground focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 focus-visible:outline-none disabled:pointer-events-none disabled:opacity-50"
                                            >
                                                <span className="sr-only">
                                                    {item.title}
                                                </span>
                                                {item.icon && (
                                                    <item.icon className="size-5 opacity-80 group-hover:opacity-100" />
                                                )}
                                            </a>
                                        </TooltipTrigger>
                                        <TooltipContent>
                                            <p>{item.title}</p>
                                        </TooltipContent>
                                    </Tooltip>
                                ))}
                            </div>
                        </div>
                        {/* Notifications Dropdown */}
                        <DropdownMenu>
                            <DropdownMenuTrigger asChild>
                                <Button
                                    variant="ghost"
                                    size="icon"
                                    className="relative h-9 w-9 cursor-pointer"
                                >
                                    <Bell className="h-5 w-5 opacity-80" />
                                    {notifications.length > 0 && (
                                        <span className="absolute -top-0.5 -right-0.5 flex h-4 w-4 items-center justify-center rounded-full bg-rose-500 text-[9px] font-extrabold text-white">
                                            {notifications.length}
                                        </span>
                                    )}
                                </Button>
                            </DropdownMenuTrigger>
                            <DropdownMenuContent
                                className="w-80 p-2 text-left"
                                align="end"
                            >
                                <div className="mb-2 flex items-center justify-between border-b px-2 pb-2">
                                    <span className="text-xs font-bold text-foreground">
                                        System Notifications
                                    </span>
                                    {notifications.length > 0 && (
                                        <button
                                            onClick={() =>
                                                router.post(
                                                    '/dashboard/notifications/read-all',
                                                )
                                            }
                                            className="text-[10px] font-semibold text-primary hover:underline"
                                        >
                                            Mark all read
                                        </button>
                                    )}
                                </div>
                                <div className="flex max-h-64 flex-col gap-1.5 overflow-y-auto">
                                    {notifications.length > 0 ? (
                                        notifications.map((n: any) => (
                                            <div
                                                key={n.id}
                                                className="group relative flex items-start gap-2.5 rounded-lg border border-transparent p-2 transition hover:border-neutral-200/50 hover:bg-neutral-50 dark:hover:border-neutral-800/30 dark:hover:bg-neutral-900"
                                            >
                                                {n.type === 'error' ? (
                                                    <ShieldAlert className="mt-0.5 h-4 w-4 shrink-0 text-rose-500" />
                                                ) : n.type === 'warning' ? (
                                                    <AlertTriangle className="mt-0.5 h-4 w-4 shrink-0 text-amber-500" />
                                                ) : (
                                                    <InfoIcon className="mt-0.5 h-4 w-4 shrink-0 text-blue-500" />
                                                )}
                                                <div className="min-w-0 flex-1 pr-6">
                                                    <h5 className="truncate text-[11px] font-bold text-foreground">
                                                        {n.title}
                                                    </h5>
                                                    <p className="mt-0.5 text-[10px] leading-normal text-muted-foreground">
                                                        {n.message}
                                                    </p>
                                                    <span className="mt-1 block text-[9px] text-zinc-400">
                                                        {n.created_at}
                                                    </span>
                                                </div>
                                                <button
                                                    onClick={() =>
                                                        router.post(
                                                            `/dashboard/notifications/${n.id}/read`,
                                                        )
                                                    }
                                                    className="absolute top-2 right-2 rounded p-1 text-muted-foreground opacity-0 transition-opacity group-hover:opacity-100 hover:bg-neutral-200 dark:hover:bg-neutral-800"
                                                    title="Mark read"
                                                >
                                                    <Check className="h-3 w-3" />
                                                </button>
                                            </div>
                                        ))
                                    ) : (
                                        <div className="py-8 text-center text-xs text-muted-foreground">
                                            No new notifications
                                        </div>
                                    )}
                                </div>
                            </DropdownMenuContent>
                        </DropdownMenu>

                        <DropdownMenu>
                            <DropdownMenuTrigger asChild>
                                <Button
                                    variant="ghost"
                                    className="size-10 rounded-full p-1"
                                >
                                    <Avatar className="size-8 overflow-hidden rounded-full">
                                        <AvatarImage
                                            src={auth.user?.avatar}
                                            alt={auth.user?.name}
                                        />
                                        <AvatarFallback className="rounded-lg bg-neutral-200 text-black dark:bg-neutral-700 dark:text-white">
                                            {getInitials(auth.user?.name ?? '')}
                                        </AvatarFallback>
                                    </Avatar>
                                </Button>
                            </DropdownMenuTrigger>
                            <DropdownMenuContent className="w-56" align="end">
                                {auth.user && (
                                    <UserMenuContent user={auth.user} />
                                )}
                            </DropdownMenuContent>
                        </DropdownMenu>
                    </div>
                </div>
            </div>
            {breadcrumbs.length > 1 && (
                <div className="flex w-full border-b border-sidebar-border/70">
                    <div className="mx-auto flex h-12 w-full items-center justify-start px-4 text-neutral-500 md:max-w-7xl">
                        <Breadcrumbs breadcrumbs={breadcrumbs} />
                    </div>
                </div>
            )}
        </>
    );
}