"use client";

import Link from "next/link";
import { usePathname } from "next/navigation";
import {
  LayoutDashboard,
  Megaphone,
  Image,
  TrendingUp,
  Calendar,
  Settings,
  ChevronsUpDown,
  Check,
  Plus,
  AppWindow,
} from "lucide-react";
import {
  Sidebar,
  SidebarContent,
  SidebarGroup,
  SidebarGroupContent,
  SidebarGroupLabel,
  SidebarMenu,
  SidebarMenuButton,
  SidebarMenuItem,
  SidebarHeader,
} from "@/components/ui/sidebar";
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import { useActiveApp } from "@/hooks/use-active-app";

const navItems = [
  { title: "Dashboard", href: "/", icon: LayoutDashboard },
  { title: "Campaigns", href: "/campaigns", icon: Megaphone },
  { title: "Assets", href: "/assets", icon: Image },
  { title: "Trends", href: "/trends", icon: TrendingUp },
  { title: "Queue", href: "/queue", icon: Calendar },
  { title: "Apps", href: "/apps", icon: AppWindow },
  { title: "Settings", href: "/settings", icon: Settings },
];

export function AppSidebar() {
  const pathname = usePathname();
  const { apps, activeApp, setActiveApp } = useActiveApp();

  return (
    <Sidebar>
      <SidebarHeader className="border-b px-6 py-4">
        <DropdownMenu>
          <DropdownMenuTrigger
            render={
              <button className="flex w-full items-center gap-2 rounded-md px-2 py-1.5 text-left font-semibold hover:bg-accent/50 focus:outline-none" />
            }
          >
            {activeApp ? (
              <img
                src={`/api/files/apps/${activeApp.slug}/icon.png`}
                alt={activeApp.name}
                className="h-7 w-7 rounded-md object-cover"
                onError={(e) => {
                  const el = e.target as HTMLImageElement;
                  el.style.display = "none";
                  el.nextElementSibling?.classList.remove("hidden");
                }}
              />
            ) : null}
            <div
              className={`flex h-7 w-7 items-center justify-center rounded-md ${activeApp ? "hidden" : ""}`}
              style={{ backgroundColor: activeApp?.primaryColor || "hsl(var(--primary))" }}
            >
              <Megaphone className="h-4 w-4 text-white" />
            </div>
            <span className="flex-1 truncate">
              {activeApp?.name || "Select App"}
            </span>
            <ChevronsUpDown className="h-4 w-4 text-muted-foreground" />
          </DropdownMenuTrigger>
          <DropdownMenuContent side="bottom" align="start" className="w-56">
            {apps.map((app) => (
              <DropdownMenuItem
                key={app.slug}
                onClick={() => setActiveApp(app.slug)}
                className="flex items-center gap-2"
              >
                <img
                  src={`/api/files/apps/${app.slug}/icon.png`}
                  alt={app.name}
                  className="h-5 w-5 rounded object-cover"
                  onError={(e) => {
                    const el = e.target as HTMLImageElement;
                    el.style.display = "none";
                    if (el.nextElementSibling) el.nextElementSibling.classList.remove("hidden");
                  }}
                />
                <div
                  className="hidden h-5 w-5 rounded"
                  style={{ backgroundColor: app.primaryColor }}
                />
                <span className="flex-1">{app.name}</span>
                {activeApp?.slug === app.slug && (
                  <Check className="h-4 w-4" />
                )}
              </DropdownMenuItem>
            ))}
            <DropdownMenuSeparator />
            <DropdownMenuItem render={<Link href="/apps/new" />} className="flex items-center gap-2">
              <Plus className="h-4 w-4" />
              <span>Add App</span>
            </DropdownMenuItem>
          </DropdownMenuContent>
        </DropdownMenu>
      </SidebarHeader>
      <SidebarContent>
        <SidebarGroup>
          <SidebarGroupLabel>Navigation</SidebarGroupLabel>
          <SidebarGroupContent>
            <SidebarMenu>
              {navItems.map((item) => (
                <SidebarMenuItem key={item.href}>
                  <SidebarMenuButton
                    render={<Link href={item.href} />}
                    isActive={
                      item.href === "/"
                        ? pathname === "/"
                        : pathname.startsWith(item.href)
                    }
                  >
                    <item.icon className="h-4 w-4" />
                    <span>{item.title}</span>
                  </SidebarMenuButton>
                </SidebarMenuItem>
              ))}
            </SidebarMenu>
          </SidebarGroupContent>
        </SidebarGroup>
      </SidebarContent>
    </Sidebar>
  );
}