import * as React from "react"
import { Slot } from "@radix-ui/react-slot"
import { cva, type VariantProps } from "class-variance-authority"
import { cn } from "@/lib/utils"

const SIDEBAR_COOKIE_NAME = "sidebar:state"
const SIDEBAR_COOKIE_MAX_AGE = 60 * 60 * 24 * 7
const SIDEBAR_WIDTH = "16rem"
const SIDEBAR_WIDTH_MOBILE = "18rem"
const SIDEBAR_WIDTH_ICON = "3rem"
const SIDEBAR_KEYBOARD_SHORTCUT = "b"

type SidebarContextType = {
  state: "expanded" | "collapsed"
  open: boolean
  setOpen: (open: boolean) => void
  openMobile: boolean
  setOpenMobile: (open: boolean) => void
  isMobile: boolean
  toggleSidebar: () => void
}

const SidebarContext = React.createContext<SidebarContextType | undefined>(undefined)

function useSidebar() {
  const context = React.useContext(SidebarContext)
  if (!context) {
    throw new Error("useSidebar must be used within a SidebarProvider.")
  }

  return context
}

const SidebarProvider = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement> & {
    defaultOpen?: boolean
    open?: boolean
    onOpenChange?: (open: boolean) => void
  }
>(
  (
    {
      defaultOpen = true,
      open: openProp,
      onOpenChange: setOpenProp,
      className,
      style,
      children,
      ...props
    },
    ref
  ) => {
    const isMobile = useIsMobile()
    const [openMobile, setOpenMobile] = React.useState(false)

    const [_open, _setOpen] = React.useState(defaultOpen)
    const open = openProp ?? _open
    const setOpen = React.useCallback(
      (open: boolean) => {
        setOpenProp?.(open)
        _setOpen(open)

        document.cookie = `${SIDEBAR_COOKIE_NAME}=${open}; path=/; max-age=${SIDEBAR_COOKIE_MAX_AGE}`
      },
      [setOpenProp]
    )

    const state = open ? "expanded" : "collapsed"

    const toggleSidebar = React.useCallback(() => {
      return isMobile ? setOpenMobile(!openMobile) : setOpen(!open)
    }, [isMobile, open, setOpen, openMobile])

    React.useEffect(() => {
      const handleKeyDown = (event: KeyboardEvent) => {
        if (event.key === SIDEBAR_KEYBOARD_SHORTCUT && (event.metaKey || event.ctrlKey)) {
          event.preventDefault()
          toggleSidebar()
        }
      }

      window.addEventListener("keydown", handleKeyDown)
      return () => window.removeEventListener("keydown", handleKeyDown)
    }, [toggleSidebar])

    return (
      <SidebarContext.Provider
        value={{
          state,
          open,
          setOpen,
          isMobile,
          openMobile,
          setOpenMobile,
          toggleSidebar,
        }}
      >
        <div
          style={
            {
              "--sidebar-width": SIDEBAR_WIDTH,
              "--sidebar-width-icon": SIDEBAR_WIDTH_ICON,
              ...style,
            } as React.CSSProperties
          }
          className="flex h-full w-full"
          ref={ref}
          {...props}
        >
          {children}
        </div>
      </SidebarContext.Provider>
    )
  }
)
SidebarProvider.displayName = "SidebarProvider"

const Sidebar = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement> & {
    side?: "left" | "right"
    variant?: "sidebar" | "floating" | "inset"
    collapsible?: "offcanvas" | "icon" | "none"
  }
>(
  (
    {
      side = "left",
      variant = "sidebar",
      collapsible = "offcanvas",
      className,
      ...props
    },
    ref
  ) => {
    const { isMobile, state, openMobile, setOpenMobile } = useSidebar()

    if (collapsible === "none") {
      return (
        <div
          className={cn(
            "flex h-full w-[--sidebar-width] flex-col bg-sidebar text-sidebar-foreground",
            className
          )}
          ref={ref}
          {...props}
        />
      )
    }

    if (isMobile) {
      return (
        <Sheet open={openMobile} onOpenChange={setOpenMobile}>
          <SheetContent side={side} className="w-[--sidebar-width-mobile] bg-sidebar p-0 text-sidebar-foreground">
            <div className="flex h-full w-full flex-col" {...props} ref={ref} />
          </SheetContent>
        </Sheet>
      )
    }

    return (
      <div
        className={cn(
          "group peer hidden md:flex md:flex-col",
          state === "collapsed" && "md:w-[--sidebar-width-icon]",
          state === "expanded" && "md:w-[--sidebar-width]",
          "h-full transition-[width] duration-300 ease-in-out",
          variant === "inset" && "border-r"
        )}
      >
        <div
          className={cn(
            "flex h-full w-full flex-col bg-sidebar text-sidebar-foreground",
            className
          )}
          ref={ref}
          {...props}
        />
      </div>
    )
  }
)
Sidebar.displayName = "Sidebar"

const SidebarTrigger = React.forwardRef<
  React.ElementRef<"button">,
  React.ButtonHTMLAttributes<HTMLButtonElement>
>(({ className, ...props }, ref) => {
  const { toggleSidebar } = useSidebar()

  return (
    <button
      ref={ref}
      onClick={toggleSidebar}
      className={cn(
        "inline-flex h-8 w-8 items-center justify-center rounded-md border border-input bg-background text-foreground hover:bg-accent hover:text-accent-foreground",
        className
      )}
      {...props}
    >
      <svg
        xmlns="http://www.w3.org/2000/svg"
        width="24"
        height="24"
        viewBox="0 0 24 24"
        fill="none"
        stroke="currentColor"
        strokeWidth="2"
        strokeLinecap="round"
        strokeLinejoin="round"
        className="h-4 w-4"
      >
        <rect width="18" height="18" x="3" y="3" rx="2" />
        <path d="M9 3v18" />
      </svg>
    </button>
  )
})
SidebarTrigger.displayName = "SidebarTrigger"

const SidebarInset = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
  <div
    ref={ref}
    className={cn("relative flex min-h-screen w-full flex-col bg-background", className)}
    {...props}
  />
))
SidebarInset.displayName = "SidebarInset"

const SidebarContent = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
  <div
    ref={ref}
    className={cn("flex flex-col gap-4 overflow-hidden px-2 py-4 flex-1", className)}
    {...props}
  />
))
SidebarContent.displayName = "SidebarContent"

const SidebarHeader = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
  <div
    ref={ref}
    className={cn("flex flex-col gap-2 overflow-hidden px-2 py-4", className)}
    {...props}
  />
))
SidebarHeader.displayName = "SidebarHeader"

const SidebarFooter = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
  <div
    ref={ref}
    className={cn("flex flex-col gap-2 overflow-hidden px-2 py-4", className)}
    {...props}
  />
))
SidebarFooter.displayName = "SidebarFooter"

const SidebarSeparator = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
  <div
    ref={ref}
    className={cn("-mx-2 my-2 h-px bg-sidebar-border", className)}
    {...props}
  />
))
SidebarSeparator.displayName = "SidebarSeparator"

const SidebarGroup = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
  <div
    ref={ref}
    className={cn("overflow-hidden px-2 py-4", className)}
    {...props}
  />
))
SidebarGroup.displayName = "SidebarGroup"

const SidebarGroupLabel = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
  <div
    ref={ref}
    className={cn(
      "px-2 py-1.5 text-xs font-medium text-sidebar-foreground/70",
      className
    )}
    {...props}
  />
))
SidebarGroupLabel.displayName = "SidebarGroupLabel"

const SidebarGroupContent = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement>
>(({ className, ...props }, ref) => (
  <div ref={ref} className={cn("w-full", className)} {...props} />
))
SidebarGroupContent.displayName = "SidebarGroupContent"

const SidebarMenu = React.forwardRef<
  HTMLUListElement,
  React.HTMLAttributes<HTMLUListElement>
>(({ className, ...props }, ref) => (
  <ul ref={ref} className={cn("flex w-full flex-col gap-1", className)} {...props} />
))
SidebarMenu.displayName = "SidebarMenu"

const SidebarMenuItem = React.forwardRef<
  HTMLLIElement,
  React.HTMLAttributes<HTMLLIElement>
>(({ className, ...props }, ref) => (
  <li ref={ref} className={cn("w-full", className)} {...props} />
))
SidebarMenuItem.displayName = "SidebarMenuItem"

const sidebarMenuButtonVariants = cva(
  "peer/menu-button flex w-full items-center gap-2 overflow-hidden rounded-md px-2 py-1.5 text-sm font-medium outline-none ring-sidebar-ring transition-all hover:bg-sidebar-accent hover:text-sidebar-accent-foreground focus-visible:ring-2 active:bg-sidebar-accent active:text-sidebar-accent-foreground disabled:pointer-events-none disabled:opacity-50 [&>span:last-child]:truncate [&>svg]:size-4 [&>svg]:shrink-0",
  {
    variants: {
      isActive: {
        true: "bg-sidebar-accent text-sidebar-accent-foreground",
        false: "text-sidebar-foreground",
      },
      variant: {
        default: "hover:bg-sidebar-accent hover:text-sidebar-accent-foreground",
        outline:
          "border border-sidebar-border bg-background text-sidebar-foreground hover:bg-sidebar-accent hover:text-sidebar-accent-foreground hover:border-sidebar-accent",
      },
      size: {
        default: "h-8 px-2",
        sm: "h-7 px-1.5 text-xs",
        lg: "h-12 px-2 text-base",
      },
    },
    defaultVariants: {
      variant: "default",
      size: "default",
    },
  }
)

const SidebarMenuButton = React.forwardRef<
  HTMLButtonElement,
  React.ButtonHTMLAttributes<HTMLButtonElement> &
    VariantProps<typeof sidebarMenuButtonVariants> & {
      asChild?: boolean
      isActive?: boolean
    }
>(
  (
    { asChild = false, isActive = false, variant = "default", size = "default", ...props },
    ref
  ) => {
    const Comp = asChild ? Slot : "button"
    return (
      <Comp
        ref={ref}
        className={sidebarMenuButtonVariants({
          isActive,
          variant,
          size,
          className: props.className,
        })}
        {...props}
      />
    )
  }
)
SidebarMenuButton.displayName = "SidebarMenuButton"

// Sheet component for mobile
const Sheet = React.forwardRef<
  HTMLDivElement,
  React.HTMLAttributes<HTMLDivElement> & {
    open?: boolean
    onOpenChange?: (open: boolean) => void
  }
>(({ open, onOpenChange, children, ...props }, ref) => {
  const [isOpen, setIsOpen] = React.useState(open ?? false)

  React.useEffect(() => {
    if (open !== undefined) {
      setIsOpen(open)
    }
  }, [open])

  return (
    <>
      {isOpen && (
        <div
          className="fixed inset-0 z-50 bg-background/80 backdrop-blur-sm"
          onClick={() => {
            setIsOpen(false)
            onOpenChange?.(false)
          }}
        />
      )}
      <div ref={ref} {...props}>
        {children}
      </div>
    </>
  )
})
Sheet.displayName = "Sheet"

interface SheetContentProps extends React.HTMLAttributes<HTMLDivElement> {
  side?: "left" | "right" | "top" | "bottom"
}

const SheetContent = React.forwardRef<
  HTMLDivElement,
  SheetContentProps
>(({ side = "left", className, ...props }, ref) => {
  const sideClasses = {
    left: "left-0 top-0 h-full w-[--sidebar-width-mobile] border-r",
    right: "right-0 top-0 h-full w-[--sidebar-width-mobile] border-l",
    top: "top-0 left-0 right-0 h-auto border-b",
    bottom: "bottom-0 left-0 right-0 h-auto border-t",
  }

  return (
    <div
      ref={ref}
      className={cn(
        "fixed z-50 bg-background transition-all duration-300",
        sideClasses[side],
        className
      )}
      {...props}
    />
  )
})
SheetContent.displayName = "SheetContent"

function useIsMobile() {
  const [isMobile, setIsMobile] = React.useState<boolean | undefined>(undefined)

  React.useEffect(() => {
    const mq = window.matchMedia("(max-width: 768px)")
    setIsMobile(mq.matches)

    const onChange = (m: MediaQueryListEvent) => {
      setIsMobile(m.matches)
    }

    mq.addEventListener("change", onChange)
    return () => mq.removeEventListener("change", onChange)
  }, [])

  return isMobile ?? false
}

export {
  Sidebar,
  SidebarProvider,
  SidebarTrigger,
  SidebarContent,
  SidebarHeader,
  SidebarFooter,
  SidebarSeparator,
  SidebarGroup,
  SidebarGroupLabel,
  SidebarGroupContent,
  SidebarMenu,
  SidebarMenuItem,
  SidebarMenuButton,
  SidebarInset,
  Sheet,
  SheetContent,
  useSidebar,
}