"use client"

import * as React from "react"
import { useRouter } from "next/navigation"
import { type DialogProps } from "@radix-ui/react-dialog"
import { IconArrowRight } from "@tabler/icons-react"
import { CornerDownLeftIcon, SquareDashedIcon } from "lucide-react"

import { source } from "@/lib/source"
import { cn } from "@/lib/utils"
import { useConfig } from "@/hooks/use-config"
import { useIsMac } from "@/hooks/use-is-mac"
import { useMutationObserver } from "@/hooks/use-mutation-observer"
import { copyToClipboardWithMeta } from "@/components/copy-button"
import { Button } from "@/components/ui/button"
import {
  Command,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
  CommandList,
} from "@/components/ui/command"
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogHeader,
  DialogTitle,
  DialogTrigger,
} from "@/components/ui/dialog"
import { Separator } from "@/components/ui/separator"

export function CommandMenu({
  tree,
  blocks,
  navItems,
  ...props
}: DialogProps & {
  tree: typeof source.pageTree
  blocks?: { name: string; description: string; categories: string[] }[]
  navItems?: { href: string; label: string }[]
}) {
  const router = useRouter()
  const isMac = useIsMac()
  const [config] = useConfig()
  const [open, setOpen] = React.useState(false)
  const [selectedType, setSelectedType] = React.useState<
    "page" | "component" | "block" | null
  >(null)
  const [copyPayload, setCopyPayload] = React.useState("")
  const packageManager = config.packageManager || "pnpm"

  const handlePageHighlight = React.useCallback(
    (isComponent: boolean, item: { url: string; name?: React.ReactNode }) => {
      if (isComponent) {
        const componentName = item.url.split("/").pop()
        setSelectedType("component")
        setCopyPayload(
          `${packageManager} dlx @creative-tim/ui@latest add ${componentName}`
        )
      } else {
        setSelectedType("page")
        setCopyPayload("")
      }
    },
    [packageManager, setSelectedType, setCopyPayload]
  )

  const handleBlockHighlight = React.useCallback(
    (block: { name: string; description: string; categories: string[] }) => {
      setSelectedType("block")
      setCopyPayload(
        `${packageManager} dlx @creative-tim/ui@latest add ${block.name}`
      )
    },
    [setSelectedType, setCopyPayload, packageManager]
  )

  const runCommand = React.useCallback((command: () => unknown) => {
    setOpen(false)
    command()
  }, [])

  React.useEffect(() => {
    const down = (e: KeyboardEvent) => {
      if ((e.key === "k" && (e.metaKey || e.ctrlKey)) || e.key === "/") {
        if (
          (e.target instanceof HTMLElement && e.target.isContentEditable) ||
          e.target instanceof HTMLInputElement ||
          e.target instanceof HTMLTextAreaElement ||
          e.target instanceof HTMLSelectElement
        ) {
          return
        }

        e.preventDefault()
        setOpen((open) => !open)
      }

      if (e.key === "c" && (e.metaKey || e.ctrlKey)) {
        runCommand(() => {
          if (selectedType === "block") {
            copyToClipboardWithMeta(copyPayload, {
              name: "copy_npm_command",
              properties: { command: copyPayload, pm: packageManager },
            })
          }

          if (selectedType === "page" || selectedType === "component") {
            copyToClipboardWithMeta(copyPayload, {
              name: "copy_npm_command",
              properties: { command: copyPayload, pm: packageManager },
            })
          }
        })
      }
    }

    document.addEventListener("keydown", down)
    return () => document.removeEventListener("keydown", down)
  }, [copyPayload, runCommand, selectedType, packageManager])

  return (
    <Dialog open={open} onOpenChange={setOpen}>
      <DialogTrigger asChild>
        <Button
          variant="ghost"
          className={cn(
            "relative h-8 w-full justify-start rounded-full border border-white/20 pl-2.5 font-normal text-white/70 shadow-none hover:bg-white/10 hover:text-white sm:pr-12 md:w-40 lg:w-56"
          )}
          onClick={() => setOpen(true)}
          {...props}
        >
          <span className="hidden lg:inline-flex">Search doc...</span>
          <span className="inline-flex lg:hidden">Search...</span>
          <div className="absolute top-1.5 right-1.5 hidden gap-1 sm:flex mt-[-1px]">
            <CommandMenuKbd>{isMac ? "⌘" : "Ctrl"}</CommandMenuKbd>
            <CommandMenuKbd className="aspect-square">K</CommandMenuKbd>
          </div>
        </Button>
      </DialogTrigger>
      <DialogContent
        showCloseButton={false}
        className="rounded-xl border-none bg-clip-padding p-2 pb-11 shadow-2xl ring-4 ring-neutral-200/80 dark:bg-neutral-900 dark:ring-neutral-800"
      >
        <DialogHeader className="sr-only">
          <DialogTitle>Search documentation...</DialogTitle>
          <DialogDescription>Search for a command to run...</DialogDescription>
        </DialogHeader>
        <Command
          className="**:data-[slot=command-input-wrapper]:bg-input/50 **:data-[slot=command-input-wrapper]:border-input rounded-none bg-transparent **:data-[slot=command-input]:!h-9 **:data-[slot=command-input]:py-0 **:data-[slot=command-input-wrapper]:mb-0 **:data-[slot=command-input-wrapper]:!h-9 **:data-[slot=command-input-wrapper]:rounded-md **:data-[slot=command-input-wrapper]:border"
          filter={(value, search, keywords) => {
            const extendValue = value + " " + (keywords?.join(" ") || "")
            if (extendValue.toLowerCase().includes(search.toLowerCase())) {
              return 1
            }
            return 0
          }}
        >
          <CommandInput placeholder="Search documentation..." />
          <CommandList className="no-scrollbar min-h-80 scroll-pt-2 scroll-pb-1.5">
            <CommandEmpty className="text-muted-foreground py-12 text-center text-sm">
              No results found.
            </CommandEmpty>
            {navItems && navItems.length > 0 && (
              <CommandGroup
                heading="Pages"
                className="!p-0 [&_[cmdk-group-heading]]:scroll-mt-16 [&_[cmdk-group-heading]]:!p-3 [&_[cmdk-group-heading]]:!pb-1"
              >
                {navItems.map((item) => (
                  <CommandMenuItem
                    key={item.href}
                    value={`Navigation ${item.label}`}
                    keywords={["nav", "navigation", item.label.toLowerCase()]}
                    onHighlight={() => {
                      setSelectedType("page")
                      setCopyPayload("")
                    }}
                    onSelect={() => {
                      runCommand(() => router.push(item.href))
                    }}
                  >
                    <IconArrowRight />
                    {item.label}
                  </CommandMenuItem>
                ))}
              </CommandGroup>
            )}
            {tree.children.map((group) => (
              <CommandGroup
                key={group.$id}
                heading={group.name}
                className="!p-0 [&_[cmdk-group-heading]]:scroll-mt-16 [&_[cmdk-group-heading]]:!p-3 [&_[cmdk-group-heading]]:!pb-1"
              >
                {group.type === "folder" &&
                  group.children.map((item) => {
                    if (item.type === "page") {
                      const isComponent = item.url.includes("/components/")

                      return (
                        <CommandMenuItem
                          key={item.url}
                          value={
                            item.name?.toString()
                              ? `${group.name} ${item.name}`
                              : ""
                          }
                          keywords={isComponent ? ["component"] : undefined}
                          onHighlight={() =>
                            handlePageHighlight(isComponent, item)
                          }
                          onSelect={() => {
                            runCommand(() => router.push(item.url))
                          }}
                        >
                          {isComponent ? (
                            <div className="border-muted-foreground aspect-square size-4 rounded-full border border-dashed" />
                          ) : (
                            <IconArrowRight />
                          )}
                          {item.name}
                        </CommandMenuItem>
                      )
                    }
                    return null
                  })}
              </CommandGroup>
            ))}

            {blocks?.length ? (
              <CommandGroup
                heading="Examples"
                className="!p-0 [&_[cmdk-group-heading]]:!p-3"
              >
                {blocks.map((block) => (
                  <CommandMenuItem
                    key={block.name}
                    value={block.name}
                    onHighlight={() => {
                      handleBlockHighlight(block)
                    }}
                    keywords={[
                      "block",
                      block.name,
                      block.description,
                      ...block.categories,
                    ]}
                    onSelect={() => {
                      runCommand(() =>
                        router.push(
                          `/blocks/${block.categories[0]}#${block.name}`
                        )
                      )
                    }}
                  >
                    <SquareDashedIcon />
                    {block.description}
                    <span className="text-muted-foreground ml-auto font-mono text-xs font-normal tabular-nums">
                      {block.name}
                    </span>
                  </CommandMenuItem>
                ))}
              </CommandGroup>
            ) : null}
          </CommandList>
        </Command>
        <div className="text-muted-foreground absolute inset-x-0 bottom-0 z-20 flex h-10 items-center gap-2 rounded-b-xl border-t border-t-neutral-100 bg-neutral-50 px-4 text-xs font-medium dark:border-t-neutral-700 dark:bg-neutral-800">
          <div className="flex items-center gap-2">
            <CommandMenuKbd>
              <CornerDownLeftIcon />
            </CommandMenuKbd>{" "}
            {selectedType === "page" || selectedType === "component"
              ? "Go to Page"
              : null}
          </div>
          {copyPayload && (
            <>
              <Separator orientation="vertical" className="!h-4" />
              <div className="flex items-center gap-1">
                <CommandMenuKbd>{isMac ? "⌘" : "Ctrl"}</CommandMenuKbd>
                <CommandMenuKbd>C</CommandMenuKbd>
                {copyPayload}
              </div>
            </>
          )}
        </div>
      </DialogContent>
    </Dialog>
  )
}

function CommandMenuItem({
  children,
  className,
  onHighlight,
  ...props
}: React.ComponentProps<typeof CommandItem> & {
  onHighlight?: () => void
  "data-selected"?: string
  "aria-selected"?: string
}) {
  const ref = React.useRef<HTMLDivElement>(null)

  useMutationObserver(ref, (mutations) => {
    mutations.forEach((mutation) => {
      if (
        mutation.type === "attributes" &&
        mutation.attributeName === "aria-selected" &&
        ref.current?.getAttribute("aria-selected") === "true"
      ) {
        onHighlight?.()
      }
    })
  })

  return (
    <CommandItem
      ref={ref}
      className={cn(
        "data-[selected=true]:border-input data-[selected=true]:bg-input/50 h-9 rounded-md border border-transparent !px-3 font-medium",
        className
      )}
      {...props}
    >
      {children}
    </CommandItem>
  )
}

function CommandMenuKbd({ className, ...props }: React.ComponentProps<"kbd">) {
  return (
    <kbd
      className={cn(
        "pointer-events-none flex h-5 items-center justify-center gap-1 rounded-full border border-white/20 bg-white/10 px-1 font-sans text-[0.7rem] font-medium text-white/70 select-none [&_svg:not([class*='size-'])]:size-3",
        className
      )}
      {...props}
    />
  )
}