import {
    Box,
    BoxProps,
    Center,
    CloseButton,
    Flex,
    HStack,
    IconButton,
    IconButtonProps,
    useBreakpointValue,
    useColorModeValue,
    useUpdateEffect,
  } from "@chakra-ui/react"
  import { AnimatePresence, motion, useElementScroll } from "framer-motion"
  import useRouteChanged from "src/hooks/use-route-changed"
  import NextLink from "next/link"
  import { useRouter } from "next/router"
  import * as React from "react"
  import { AiOutlineMenu } from "react-icons/ai"
  import { RemoveScroll } from "react-remove-scroll"
  import Logo from "src/components/logo"
  
  function NavLink({ href, children }) {
    const { pathname } = useRouter()
  
    const [, group] = href.split("/")
    const isActive = pathname.includes(group)
  
    return (
      <NextLink href={href}>
        <Center
          flex="1"
          minH="40px"
          as="button"
          rounded="md"
          transition="0.2s all"
          fontWeight={isActive ? "semibold" : "medium"}
          bg={isActive ? "teal.400" : undefined}
          borderWidth={isActive ? undefined : "1px"}
          color={isActive ? "white" : undefined}
          _hover={{
            bg: isActive
              ? "teal.500"
              : useColorModeValue("gray.100", "whiteAlpha.100"),
          }}
        >
          {children}
        </Center>
      </NextLink>
    )
  }
  
  interface MobileNavContentProps {
    isOpen?: boolean
    onClose?: () => void
  }
  
  export function MobileNavContent(props: MobileNavContentProps) {
    const { isOpen, onClose } = props
    const closeBtnRef = React.useRef<HTMLButtonElement>()
    const { pathname } = useRouter()
  
    useRouteChanged(onClose)
  
    /**
     * Scenario: Menu is open on mobile, and user resizes to desktop/tablet viewport.
     * Result: We'll close the menu
     */
    const showOnBreakpoint = useBreakpointValue({ base: true, lg: false })
  
    React.useEffect(() => {
      if (showOnBreakpoint == false) {
        onClose()
      }
    }, [showOnBreakpoint])
  
    useUpdateEffect(() => {
      if (isOpen) {
        requestAnimationFrame(() => {
          closeBtnRef.current?.focus()
        })
      }
    }, [isOpen])
  
    const [shadow, setShadow] = React.useState<string>()
  
    return (
      <AnimatePresence>
        {isOpen && (
          <RemoveScroll forwardProps>
            <motion.div
              transition={{ duration: 0.08 }}
              initial={{ opacity: 0 }}
              animate={{ opacity: 1 }}
              exit={{ opacity: 0 }}
            >
              <Flex
                direction="column"
                w="100%"
                bg={useColorModeValue("white", "gray.800")}
                h="100vh"
                overflow="auto"
                pos="absolute"
                top="0"
                left="0"
                zIndex={20}
                pb="8"
              >
                <Box>
                  <Flex justify="space-between" px="6" pt="5" pb="4">
                    <Logo />
                    <HStack spacing="5">
                      <CloseButton ref={closeBtnRef} onClick={onClose} />
                    </HStack>
                  </Flex>
                  <Box px="6" pb="6" pt="2" shadow={shadow}>
                    <HStack>
                      <NavLink href="/docs/getting-started">Docs</NavLink>
                      <NavLink href="/guides/integrations/with-cra">
                        Guides
                      </NavLink>
                      <NavLink href="/team">Team</NavLink>
                    </HStack>
                  </Box>
                </Box>
  
                <ScrollView
                  onScroll={(scrolled) => {
                    setShadow(scrolled ? "md" : undefined)
                  }}
                >
  
                </ScrollView>
              </Flex>
            </motion.div>
          </RemoveScroll>
        )}
      </AnimatePresence>
    )
  }
  
  const ScrollView = (props: BoxProps & { onScroll?: any }) => {
    const { onScroll, ...rest } = props
    const [y, setY] = React.useState(0)
    const elRef = React.useRef<any>()
    const { scrollY } = useElementScroll(elRef)
    React.useEffect(() => {
      return scrollY.onChange(() => setY(scrollY.get()))
    }, [scrollY])
  
    useUpdateEffect(() => {
      onScroll?.(y > 5 ? true : false)
    }, [y])
  
    return (
      <Box
        ref={elRef}
        flex="1"
        id="routes"
        overflow="auto"
        px="6"
        pb="6"
        {...rest}
      />
    )
  }
  
  export const MobileNavButton = React.forwardRef(
    (props: IconButtonProps, ref: React.Ref<any>) => {
      return (
        <IconButton
          ref={ref}
          display={{ base: "flex", md: "none" }}
          aria-label="Open menu"
          fontSize="20px"
          color={useColorModeValue("gray.800", "inherit")}
          variant="ghost"
          icon={<AiOutlineMenu />}
          {...props}
        />
      )
    },
  )