import * as React from "react"
import * as DropdownMenuPrimitive from "@radix-ui/react-dropdown-menu"

import { cn } from "../libs/utils"

import { CheckIcon, ChevronRightIcon } from "lucide-react"

const HoverMenuContext = React.createContext(false);

function DropdownMenu({
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Root>) {
  return <DropdownMenuPrimitive.Root data-slot="dropdown-menu" {...props} />
}

function DropdownMenuPortal({
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Portal>) {
  return (
    <DropdownMenuPrimitive.Portal data-slot="dropdown-menu-portal" {...props} />
  )
}

function DropdownMenuTrigger({
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Trigger>) {
  return (
    <DropdownMenuPrimitive.Trigger
      data-slot="dropdown-menu-trigger"
      {...props}
    />
  )
}

function DropdownMenuContent({
  className,
  align = "start",
  sideOffset = 4,
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Content>) {
  return (
    <DropdownMenuPrimitive.Portal>
      <DropdownMenuPrimitive.Content
        data-slot="dropdown-menu-content"
        sideOffset={sideOffset}
        align={align}
        className={cn("data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 data-closed:zoom-out-95 data-open:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 ring-foreground/10 bg-popover text-popover-foreground min-w-32 rounded-lg p-1 shadow-md ring-1 duration-100 z-50 max-h-(--radix-dropdown-menu-content-available-height) w-(--radix-dropdown-menu-trigger-width) origin-(--radix-dropdown-menu-content-transform-origin) overflow-x-hidden overflow-y-auto data-[state=closed]:overflow-hidden", className)}
        {...props}
      />
    </DropdownMenuPrimitive.Portal>
  )
}

function DropdownMenuGroup({
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Group>) {
  return (
    <DropdownMenuPrimitive.Group data-slot="dropdown-menu-group" {...props} />
  )
}

function DropdownMenuItem({
  className,
  inset,
  variant = "default",
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Item> & {
  inset?: boolean
  variant?: "default" | "destructive"
}) {
  return (
    <DropdownMenuPrimitive.Item
      data-slot="dropdown-menu-item"
      data-inset={inset}
      data-variant={variant}
      className={cn(
        "hover:bg-muted focus:bg-muted data-[variant=destructive]:text-destructive data-[variant=destructive]:focus:bg-destructive/10 dark:data-[variant=destructive]:focus:bg-destructive/20 data-[variant=destructive]:focus:text-destructive data-[variant=destructive]:*:[svg]:text-destructive gap-2 rounded-md px-1.5 py-1 text-sm data-inset:pl-7 [&_svg:not([class*='size-'])]:size-4 group/dropdown-menu-item relative flex cursor-default items-center outline-hidden select-none data-disabled:pointer-events-none data-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0",
        className
      )}
      {...props}
    />
  )
}

function DropdownMenuCheckboxItem({
  className,
  children,
  checked,
  inset,
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.CheckboxItem> & {
  inset?: boolean
}) {
  return (
    <DropdownMenuPrimitive.CheckboxItem
      data-slot="dropdown-menu-checkbox-item"
      data-inset={inset}
      className={cn(
        "focus:bg-muted focus:text-muted focus:**:text-muted gap-2 rounded-md py-1 pr-8 pl-1.5 text-sm data-inset:pl-7 [&_svg:not([class*='size-'])]:size-4 relative flex cursor-default items-center outline-hidden select-none data-disabled:pointer-events-none data-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0",
        className
      )}
      checked={checked}
      {...props}
    >
      <span
        className="absolute right-2 flex items-center justify-center pointer-events-none"
        data-slot="dropdown-menu-checkbox-item-indicator"
      >
        <DropdownMenuPrimitive.ItemIndicator>
          <CheckIcon
          />
        </DropdownMenuPrimitive.ItemIndicator>
      </span>
      {children}
    </DropdownMenuPrimitive.CheckboxItem>
  )
}

function DropdownMenuRadioGroup({
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.RadioGroup>) {
  return (
    <DropdownMenuPrimitive.RadioGroup
      data-slot="dropdown-menu-radio-group"
      {...props}
    />
  )
}

function DropdownMenuRadioItem({
  className,
  children,
  inset,
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.RadioItem> & {
  inset?: boolean
}) {
  return (
    <DropdownMenuPrimitive.RadioItem
      data-slot="dropdown-menu-radio-item"
      data-inset={inset}
      className={cn(
        "focus:bg-muted focus:text-muted focus:**:text-muted gap-2 rounded-md py-1 pr-8 pl-1.5 text-sm data-inset:pl-7 [&_svg:not([class*='size-'])]:size-4 relative flex cursor-default items-center outline-hidden select-none data-disabled:pointer-events-none data-disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0",
        className
      )}
      {...props}
    >
      <span
        className="absolute right-2 flex items-center justify-center pointer-events-none"
        data-slot="dropdown-menu-radio-item-indicator"
      >
        <DropdownMenuPrimitive.ItemIndicator>
          <CheckIcon
          />
        </DropdownMenuPrimitive.ItemIndicator>
      </span>
      {children}
    </DropdownMenuPrimitive.RadioItem>
  )
}

function DropdownMenuLabel({
  className,
  inset,
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Label> & {
  inset?: boolean
}) {
  return (
    <DropdownMenuPrimitive.Label
      data-slot="dropdown-menu-label"
      data-inset={inset}
      className={cn("text-muted px-1.5 py-1 text-xs font-medium data-inset:pl-7", className)}
      {...props}
    />
  )
}

function DropdownMenuSeparator({
  className,
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Separator>) {
  return (
    <DropdownMenuPrimitive.Separator
      data-slot="dropdown-menu-separator"
      className={cn("bg-border -mx-1 my-1 h-px", className)}
      {...props}
    />
  )
}

function DropdownMenuShortcut({
  className,
  ...props
}: React.ComponentProps<"span">) {
  return (
    <span
      data-slot="dropdown-menu-shortcut"
      className={cn("text-muted group-focus/dropdown-menu-item:text-muted ml-auto text-xs tracking-widest", className)}
      {...props}
    />
  )
}

function DropdownMenuSub({
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.Sub>) {
  return <DropdownMenuPrimitive.Sub data-slot="dropdown-menu-sub" {...props} />
}

function DropdownMenuSubTrigger({
  className,
  inset,
  children,
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.SubTrigger> & {
  inset?: boolean
}) {
  return (
    <DropdownMenuPrimitive.SubTrigger
      data-slot="dropdown-menu-sub-trigger"
      data-inset={inset}
      className={cn(
        "focus:bg-muted focus:text-muted data-open:bg-muted data-open:text-muted not-data-[variant=destructive]:focus:**:text-muted gap-2 rounded-md px-1.5 py-1 text-sm data-inset:pl-7 [&_svg:not([class*='size-'])]:size-4 flex cursor-default items-center outline-hidden select-none [&_svg]:pointer-events-none [&_svg]:shrink-0",
        className
      )}
      {...props}
    >
      {children}
      <ChevronRightIcon className="cn-rtl-flip ml-auto" />
    </DropdownMenuPrimitive.SubTrigger>
  )
}

function DropdownMenuSubContent({
  className,
  ...props
}: React.ComponentProps<typeof DropdownMenuPrimitive.SubContent>) {
  return (
    <DropdownMenuPrimitive.SubContent
      data-slot="dropdown-menu-sub-content"
      className={cn("data-open:animate-in data-closed:animate-out data-closed:fade-out-0 data-open:fade-in-0 data-closed:zoom-out-95 data-open:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 ring-foreground/10 bg-popover text-popover-foreground min-w-[96px] rounded-lg p-1 shadow-lg ring-1 duration-100 z-50 origin-(--radix-dropdown-menu-content-transform-origin) overflow-hidden", className)}
      {...props}
    />
  )
}

export {
  DropdownMenu,
  DropdownMenuPortal,
  DropdownMenuTrigger,
  DropdownMenuContent,
  DropdownMenuGroup,
  DropdownMenuLabel,
  DropdownMenuItem,
  DropdownMenuCheckboxItem,
  DropdownMenuRadioGroup,
  DropdownMenuRadioItem,
  DropdownMenuSeparator,
  DropdownMenuShortcut,
  DropdownMenuSub,
  DropdownMenuSubTrigger,
  DropdownMenuSubContent,
}

// High-level convenience components

const alignMap = { left: 'start', center: 'center', right: 'end' } as const;

interface DropdownProps {
  trigger: React.ReactNode;
  children: React.ReactNode | React.ReactNode[];
  align?: 'left' | 'center' | 'right';
  hover?: boolean;
}
export function Dropdown({ trigger, children, align = 'right', hover }: DropdownProps) {
  const [open, setOpen] = React.useState(false);
  const closeTimer = React.useRef<ReturnType<typeof setTimeout> | null>(null);

  if (hover) {
    const onEnter = () => {
      if (closeTimer.current) clearTimeout(closeTimer.current);
      setOpen(true);
    };
    const onLeave = () => {
      closeTimer.current = setTimeout(() => setOpen(false), 80);
    };
    const alignClass = align === 'right' ? 'right-0' : align === 'center' ? 'left-1/2 -translate-x-1/2' : 'left-0';
    return (
      <div className="relative inline-flex" onMouseEnter={onEnter} onMouseLeave={onLeave}>
        {trigger}
        {open && (
          <div className={cn('absolute top-full pt-1 z-50', alignClass)}>
            <div className="min-w-32 rounded-lg p-1 shadow-md ring-1 ring-foreground/10 bg-popover text-popover-foreground">
              <HoverMenuContext.Provider value={true}>{children}</HoverMenuContext.Provider>
            </div>
          </div>
        )}
      </div>
    );
  }

  return (
    <DropdownMenu>
      <DropdownMenuTrigger asChild>
        <span className="-m-1.5 flex items-center p-1.5">
          {trigger}
        </span>
      </DropdownMenuTrigger>
      <DropdownMenuContent align={alignMap[align]} className="w-max">
        {children}
      </DropdownMenuContent>
    </DropdownMenu>
  );
}

interface MenuGroupProps {
  children: React.ReactNode | React.ReactNode[];
  label?: string;
}
export function MenuGroup({ children, label }: MenuGroupProps) {
  return (
    <DropdownMenuGroup>
      {label && <DropdownMenuLabel>{label}</DropdownMenuLabel>}
      {children}
    </DropdownMenuGroup>
  );
}

interface MenuItemProps {
  children: React.ReactNode | React.ReactNode[];
  onClick?: (ev: React.MouseEvent) => void;
  href?: string;
  closeOnClick?: boolean;
  isDisabled?: boolean;
  variant?: "default" | "destructive";
  className?: string;
}
export function MenuItem({ children, href, onClick, isDisabled = false, variant = "default", className }: MenuItemProps) {
  const isHoverMenu = React.useContext(HoverMenuContext);
  const baseClass = cn(
    "w-full gap-2 rounded-md px-1.5 py-1 text-sm text-nowrap [&_svg:not([class*='size-'])]:size-4 flex cursor-default items-center select-none [&_svg]:pointer-events-none [&_svg]:shrink-0",
    variant === 'destructive' ? 'text-destructive' : '',
    isDisabled ? 'pointer-events-none opacity-50' : 'hover:bg-muted focus:bg-muted',
    className
  );
  if (isHoverMenu) {
    const handleClick = (e: React.MouseEvent) => { e.stopPropagation(); onClick?.(e); };
    return href
      ? <a href={href} className={baseClass}>{children}</a>
      : <button className={baseClass} disabled={isDisabled} onClick={handleClick}>{children}</button>;
  }
  return (
    <DropdownMenuItem
      className={cn("data-[disabled]:pointer-events-none data-[disabled]:opacity-50 text-nowrap", className)}
      disabled={isDisabled}
      variant={variant}
      onClick={(e) => { e.stopPropagation(); onClick?.(e); }}
      asChild={!!href}
    >
      {href ? <a href={href}>{children}</a> : <>{children}</>}
    </DropdownMenuItem>
  );
}