'use client'

import { LaptopIcon, MoonIcon, SunIcon } from 'lucide-react'
import { useTheme } from 'next-themes'
import { useRouter } from 'next/navigation'
import * as React from 'react'
import {
  Button,
  CommandDialog,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
  CommandList,
  CommandSeparator,
  DialogDescription,
  DialogProps,
  DialogTitle,
} from 'ui'

import { gettingStarted } from '@/config/docs'
import { getLibraryBlockHref, libraryBlocks, libraryCategories } from '@/config/library'
import { useFramework } from '@/context/framework-context'
import { cn } from '@/lib/utils'

export function CommandMenu({ ...props }: DialogProps) {
  const router = useRouter()
  const { framework } = useFramework()
  const [open, setOpen] = React.useState(false)
  const { setTheme } = useTheme()

  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)
      }
    }

    document.addEventListener('keydown', down)
    return () => document.removeEventListener('keydown', down)
  }, [])

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

  return (
    <>
      <Button
        variant="outline"
        className={cn(
          `@container relative h-8 w-full justify-start rounded-[0.5rem] bg-background text-sm font-normal text-foreground-muted shadow-none sm:pr-12 md:pr-2.5 lg:pr-12
            hover:border-foreground-muted hover:bg-surface-100 hover:text-foreground-lighter
          `
        )}
        onClick={() => setOpen(true)}
        {...props}
      >
        <span className="hidden @min-[7.5rem]:inline-flex">Search library...</span>
        <span className="inline-flex @min-[7.5rem]:hidden">Search...</span>
        <kbd className="pointer-events-none absolute right-[0.3rem] top-[0.3rem] hidden h-5 select-none items-center gap-1 rounded-sm border bg-surface-200 px-1.5 font-mono text-[10px] font-medium opacity-100 sm:flex md:hidden lg:flex text-foreground-light">
          <span className="text-sm">⌘</span>K
        </kbd>
      </Button>
      <CommandDialog open={open} onOpenChange={setOpen}>
        <DialogTitle className="sr-only">Search the library</DialogTitle>
        <DialogDescription className="sr-only">
          Find guides, blocks, starter apps, and theme settings.
        </DialogDescription>
        <CommandInput placeholder="Type a command or search..." />
        <CommandList className="min-h-0 max-h-[min(400px,calc(100dvh-8rem))] overscroll-contain [&_[cmdk-group]]:p-2! [&_[cmdk-item]]:rounded-md [&_[cmdk-item]]:p-2!">
          <CommandEmpty>No results found.</CommandEmpty>
          <CommandGroup key="pages" heading="Pages">
            {gettingStarted.items.map((navItem) => (
              <CommandItem
                key={navItem.href}
                value={navItem.title}
                onSelect={() => runCommand(() => router.push(navItem.href as string))}
              >
                {navItem.title}
              </CommandItem>
            ))}
          </CommandGroup>
          {libraryCategories.map((category) => (
            <CommandGroup key={category.slug} heading={category.name}>
              {libraryBlocks
                .filter((block) => block.category === category.name)
                .map((block) => (
                  <CommandItem
                    key={block.slug}
                    value={`${block.title} ${block.category} ${block.tags.join(' ')}`}
                    onSelect={() =>
                      runCommand(() => {
                        const href = getLibraryBlockHref(block, framework)
                        if (block.external) window.location.assign(href)
                        else router.push(href)
                      })
                    }
                  >
                    {block.title}
                  </CommandItem>
                ))}
            </CommandGroup>
          ))}
          <CommandSeparator />
          <CommandGroup heading="Theme">
            <CommandItem onSelect={() => runCommand(() => setTheme('light'))}>
              <SunIcon className="mr-2 h-4 w-4" strokeWidth={1} />
              Light
            </CommandItem>
            <CommandItem onSelect={() => runCommand(() => setTheme('dark'))}>
              <MoonIcon className="mr-2 h-4 w-4" strokeWidth={1} />
              Dark
            </CommandItem>
            <CommandItem onSelect={() => runCommand(() => setTheme('system'))}>
              <LaptopIcon className="mr-2 h-4 w-4" strokeWidth={1} />
              System
            </CommandItem>
          </CommandGroup>
        </CommandList>
      </CommandDialog>
    </>
  )
}