'use client';

import * as React from 'react';
import { Command as CommandPrimitive } from 'cmdk';
import { SearchIcon } from 'lucide-react';

import { cn } from '../../shared/utils';
import { Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle } from '../dialog';

/**
 * Searchable command palette (Cmd+K / Spotlight style).
 *
 * @description
 * Built on cmdk. Abstracts the logic for a search bar that instantly filters
 * dense groups in real time. Often used inside a `<CommandDialog>` for a
 * keyboard-accessible global command launcher.
 *
 * @ai-rules
 * 1. `<CommandInput>` does NOT hold form state — it filters the `<CommandList>` in the DOM in real time.
 * 2. `<CommandItem>` REQUIRES the `value` prop to be indexed and filterable when its child is not plain text.
 * 3. Wrap in `<CommandDialog>` for a full keyboard-triggered modal palette.
 */
function Command({ className, ...props }: React.ComponentProps<typeof CommandPrimitive>) {
  return (
    <CommandPrimitive
      data-slot="command"
      className={cn(
        'bg-popover text-popover-foreground flex h-full w-full flex-col overflow-hidden rounded-md',
        className
      )}
      {...props}
    />
  );
}

function CommandDialog({
  title = 'Command Palette',
  description = 'Search for a command to run...',
  children,
  ...props
}: React.ComponentProps<typeof Dialog> & {
  title?: string;
  description?: string;
}) {
  return (
    <Dialog {...props}>
      <DialogHeader className="sr-only">
        <DialogTitle>{title}</DialogTitle>
        <DialogDescription>{description}</DialogDescription>
      </DialogHeader>
      <DialogContent className="overflow-hidden p-0">
        <Command className="[&_[cmdk-group-heading]]:text-muted-foreground **:data-[slot=command-input-wrapper]:h-12 [&_[cmdk-group-heading]]:px-2 [&_[cmdk-group-heading]]:font-medium [&_[cmdk-group]]:px-2 [&_[cmdk-group]:not([hidden])_~[cmdk-group]]:pt-0 [&_[cmdk-input-wrapper]_svg]:h-5 [&_[cmdk-input-wrapper]_svg]:w-5 [&_[cmdk-input]]:h-12 [&_[cmdk-item]]:px-2 [&_[cmdk-item]]:py-3 [&_[cmdk-item]_svg]:h-5 [&_[cmdk-item]_svg]:w-5">
          {children}
        </Command>
      </DialogContent>
    </Dialog>
  );
}

function CommandInput({
  className,
  ...props
}: React.ComponentProps<typeof CommandPrimitive.Input>) {
  return (
    <div data-slot="command-input-wrapper" className="flex h-9 items-center gap-2 border-b px-3">
      <SearchIcon className="size-4 shrink-0 opacity-50" />
      <CommandPrimitive.Input
        data-slot="command-input"
        className={cn(
          'placeholder:text-muted-foreground flex h-10 w-full rounded-md bg-transparent py-3 text-sm outline-hidden disabled:cursor-not-allowed disabled:opacity-50',
          className
        )}
        {...props}
      />
    </div>
  );
}

function CommandList({ className, ...props }: React.ComponentProps<typeof CommandPrimitive.List>) {
  return (
    <CommandPrimitive.List
      data-slot="command-list"
      role="listbox"
      className={cn('max-h-[300px] scroll-py-1 overflow-x-hidden overflow-y-auto', className)}
      {...props}
    />
  );
}

function CommandEmpty({ ...props }: React.ComponentProps<typeof CommandPrimitive.Empty>) {
  return (
    <CommandPrimitive.Empty
      data-slot="command-empty"
      className="py-6 text-center text-sm"
      {...props}
    />
  );
}

function CommandGroup({
  className,
  ...props
}: React.ComponentProps<typeof CommandPrimitive.Group>) {
  return (
    <CommandPrimitive.Group
      data-slot="command-group"
      className={cn(
        'text-foreground [&_[cmdk-group-heading]]:text-muted-foreground overflow-hidden p-1 [&_[cmdk-group-heading]]:px-2 [&_[cmdk-group-heading]]:py-1.5 [&_[cmdk-group-heading]]:text-xs [&_[cmdk-group-heading]]:font-medium',
        className
      )}
      {...props}
    />
  );
}

function CommandSeparator({
  className,
  ...props
}: React.ComponentProps<typeof CommandPrimitive.Separator>) {
  return (
    <CommandPrimitive.Separator
      data-slot="command-separator"
      className={cn('bg-border -mx-1 h-px', className)}
      {...props}
    />
  );
}

function CommandItem({ className, ...props }: React.ComponentProps<typeof CommandPrimitive.Item>) {
  return (
    <CommandPrimitive.Item
      data-slot="command-item"
      role="option"
      className={cn(
        "data-[selected=true]:bg-accent data-[selected=true]:text-accent-foreground [&_svg:not([class*='text-'])]:text-muted-foreground relative flex cursor-default items-center gap-2 rounded-sm px-2 py-1.5 text-sm outline-hidden select-none data-[disabled=true]:pointer-events-none data-[disabled=true]:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
        className
      )}
      {...props}
    />
  );
}

function CommandShortcut({ className, ...props }: React.ComponentProps<'span'>) {
  return (
    <span
      data-slot="command-shortcut"
      className={cn('text-muted-foreground ml-auto text-xs tracking-widest', className)}
      {...props}
    />
  );
}

export {
  Command,
  CommandDialog,
  CommandInput,
  CommandList,
  CommandEmpty,
  CommandGroup,
  CommandItem,
  CommandShortcut,
  CommandSeparator,
};