"use client";

import * as React from "react";
import { useNavigate } from "react-router-dom";
import { AppWindow, Box, ShieldCheck, Zap } from "lucide-react";
import { appopsClient } from "@/api/appopsClient";
import {
  CommandDialog,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
  CommandList,
  CommandSeparator,
  CommandShortcut,
} from "@/components/ui/command";
import { buildCommandPaletteGroups } from "@/lib/commandPaletteNavigation";
import { isCommandPaletteShortcut } from "@/lib/commandPaletteShortcut";
import { navigationGroups } from "@/lib/navigationGroups";

const commandPaletteGroups = buildCommandPaletteGroups(navigationGroups);

export function CommandPalette() {
  const [open, setOpen] = React.useState(false);
  const [liveItems, setLiveItems] = React.useState<{
    apps: Awaited<ReturnType<typeof appopsClient.getApps>>;
    containers: Awaited<ReturnType<typeof appopsClient.getContainers>>;
    policies: Awaited<ReturnType<typeof appopsClient.getPolicies>>;
    actions: Awaited<ReturnType<typeof appopsClient.getActionRegistry>>["items"];
  }>({ apps: [], containers: [], policies: [], actions: [] });
  const navigate = useNavigate();

  React.useEffect(() => {
    const down = (e: KeyboardEvent) => {
      if (isCommandPaletteShortcut(e)) {
        e.preventDefault();
        setOpen((open) => !open);
      }
    };
    document.addEventListener("keydown", down);
    return () => document.removeEventListener("keydown", down);
  }, []);

  React.useEffect(() => {
    if (!open) return;
    let active = true;
    Promise.allSettled([
      appopsClient.getApps(),
      appopsClient.getContainers(),
      appopsClient.getPolicies(),
      appopsClient.getActionRegistry(),
    ]).then(([apps, containers, policies, actions]) => {
      if (!active) return;
      setLiveItems({
        apps: apps.status === "fulfilled" ? apps.value : [],
        containers: containers.status === "fulfilled" ? containers.value : [],
        policies: policies.status === "fulfilled" ? policies.value : [],
        actions: actions.status === "fulfilled" ? actions.value.items : [],
      });
    });
    return () => { active = false; };
  }, [open]);

  const runCommand = (command: () => void) => {
    setOpen(false);
    command();
  };

  return (
    <CommandDialog open={open} onOpenChange={setOpen}>
      <CommandInput placeholder="Typ een commando of zoek..." className="border-none focus:ring-0" />
      <CommandList className="bg-slate-950 text-slate-200 border-t border-slate-800">
        <CommandEmpty>Geen resultaten gevonden.</CommandEmpty>
        {commandPaletteGroups.map((group, groupIndex) => (
          <React.Fragment key={group.label}>
            {groupIndex > 0 && <CommandSeparator className="bg-slate-800" />}
            <CommandGroup heading={group.label}>
              {group.items.map((item) => (
                <CommandItem
                  key={item.path}
                  value={`${item.searchLabel} ${group.label} ${item.path}`}
                  onSelect={() => runCommand(() => navigate(item.path))}
                >
                  <item.icon className="mr-2 h-4 w-4" />
                  <span>{item.searchLabel}</span>
                </CommandItem>
              ))}
            </CommandGroup>
          </React.Fragment>
        ))}
        {liveItems.apps.length > 0 && (
          <>
            <CommandSeparator className="bg-slate-800" />
            <CommandGroup heading="Apps">
              {liveItems.apps.map((app) => (
                <CommandItem key={`app-${app.id}`} value={`${app.name} ${app.id} ${app.category} app`} onSelect={() => runCommand(() => navigate(`/apps/${encodeURIComponent(app.id)}`))}>
                  <AppWindow className="mr-2 h-4 w-4" /><span>{app.name}</span><CommandShortcut>{app.status}</CommandShortcut>
                </CommandItem>
              ))}
            </CommandGroup>
          </>
        )}
        {liveItems.containers.length > 0 && (
          <>
            <CommandSeparator className="bg-slate-800" />
            <CommandGroup heading="Containers">
              {liveItems.containers.map((container) => (
                <CommandItem key={`container-${container.id}`} value={`${container.name} ${container.image} ${container.appId || ""} container`} onSelect={() => runCommand(() => navigate(`/containers?query=${encodeURIComponent(container.name)}`))}>
                  <Box className="mr-2 h-4 w-4" /><span>{container.name}</span><CommandShortcut>{container.state}</CommandShortcut>
                </CommandItem>
              ))}
            </CommandGroup>
          </>
        )}
        {liveItems.actions.length > 0 && (
          <>
            <CommandSeparator className="bg-slate-800" />
            <CommandGroup heading="Acties">
              {liveItems.actions.map((action) => (
                <CommandItem key={`action-${action.id}-${action.target}`} value={`${action.label} ${action.id} ${action.target} ${action.category}`} onSelect={() => runCommand(() => navigate(`/command-center?query=${encodeURIComponent(action.id)}`))}>
                  <Zap className="mr-2 h-4 w-4" /><span>{action.label}</span><CommandShortcut>{action.policyDecision}</CommandShortcut>
                </CommandItem>
              ))}
            </CommandGroup>
          </>
        )}
        {liveItems.policies.length > 0 && (
          <>
            <CommandSeparator className="bg-slate-800" />
            <CommandGroup heading="Policies">
              {liveItems.policies.map((policy) => (
                <CommandItem key={`policy-${policy.id}`} value={`${policy.action} ${policy.target} ${policy.reason || ""} policy`} onSelect={() => runCommand(() => navigate(`/policies?query=${encodeURIComponent(policy.id)}`))}>
                  <ShieldCheck className="mr-2 h-4 w-4" /><span>{policy.action}</span><CommandShortcut>{policy.manual}</CommandShortcut>
                </CommandItem>
              ))}
            </CommandGroup>
          </>
        )}
      </CommandList>
    </CommandDialog>
  );
}