import Link from 'next/link'
import { useRouter } from 'next/router'
import clsx from 'clsx'
import { AnimatePresence, motion } from 'framer-motion'
import { Button } from '@/components/Button'
import { Tag } from '@/components/Tag'
import { remToPx } from '@/lib/remToPx'
import { useEffect, useState } from 'react'
import {
  NavigationStateProvider,
  useNavigationState,
} from '@/components/NavigationState'

export const apiNavigation = [
  {
    title: 'Guides',
    links: [
      { title: 'Quickstart', href: '/api/guides/quickstart' },
      { title: 'Authentication', href: '/api/guides/authentication' },
      { title: 'Errors', href: '/api/guides/errors' },
      { title: 'MSP API access', href: '/api/guides/msp-api-access' },
    ],
  },
  {
    title: 'Resources',
    links: [
      { title: 'Accounts', href: '/api/resources/accounts' },
      { title: 'Users', href: '/api/resources/users' },
      { title: 'Tokens', href: '/api/resources/tokens' },
      { title: 'Peers', href: '/api/resources/peers' },
      { title: 'Setup Keys', href: '/api/resources/setup-keys' },
      { title: 'Groups', href: '/api/resources/groups' },
      { title: 'Policies', href: '/api/resources/policies' },
      { title: 'Posture Checks', href: '/api/resources/posture-checks' },
      { title: 'Geo Locations', href: '/api/resources/geo-locations' },
      { title: 'Routes (deprecated)', href: '/api/resources/routes' },
      { title: 'Networks', href: '/api/resources/networks' },
      { title: 'DNS', href: '/api/resources/dns' },
      { title: 'DNS Zones', href: '/api/resources/dns-zones' },
      { title: 'Services', href: '/api/resources/services' },
      { title: 'Agent Network', href: '/api/resources/agent-network' },
      { title: 'Events', href: '/api/resources/events' },
      {
        title: 'Event Streaming',
        href: '/api/resources/event-streaming-integrations',
      },
      { title: 'Jobs', href: '/api/resources/jobs' },
      {
        title: 'Identity Providers',
        href: '/api/resources/identity-providers',
      },
      { title: 'Instance', href: '/api/resources/instance' },
    ],
  },
  {
    title: 'Cloud Resources',
    links: [
      { title: 'Ingress Ports', href: '/api/resources/ingress-ports' },
      {
        title: 'IDP (Azure API)',
        href: '/api/resources/idp-azure-integrations',
      },
      {
        title: 'IDP (Google API)',
        href: '/api/resources/idp-google-integrations',
      },
      {
        title: 'IDP (Okta SCIM)',
        href: '/api/resources/idp-okta-scim-integrations',
      },
      {
        title: 'IDP (SCIM Generic)',
        href: '/api/resources/idp-scim-integrations',
      },
      {
        title: 'Event Streaming',
        href: '/api/resources/event-streaming-integrations',
      },
      { title: 'EDR Peers', href: '/api/resources/edr-peers' },
      { title: 'EDR Falcon', href: '/api/resources/edr-falcon-integrations' },
      { title: 'EDR FleetDM', href: '/api/resources/edr-fleetdm-integrations' },
      {
        title: 'EDR Huntress',
        href: '/api/resources/edr-huntress-integrations',
      },
      { title: 'EDR Intune', href: '/api/resources/edr-intune-integrations' },
      {
        title: 'EDR SentinelOne',
        href: '/api/resources/edr-sentinelone-integrations',
      },
      { title: 'Notifications', href: '/api/resources/notifications' },
      { title: 'MSP', href: '/api/resources/msp' },
      { title: 'Invoice', href: '/api/resources/invoice' },
      { title: 'Usage', href: '/api/resources/usage' },
    ],
  },
]

export function NavigationAPI({ tableOfContents, className }) {
  return (
    <nav className={className}>
      <ul role="list">
        <TopLevelNavItem href="https://netbird.io/">Home</TopLevelNavItem>
        <TopLevelNavItem href="/">Docs</TopLevelNavItem>
        <TopLevelNavItem href="/api">API</TopLevelNavItem>
        <TopLevelNavItem href="https://netbird.io/knowledge-hub/">
          Learn
        </TopLevelNavItem>
        <TopLevelNavItem href="https://github.com/netbirdio/netbird">
          Github
        </TopLevelNavItem>
        <TopLevelNavItem href="/slack-url">Support</TopLevelNavItem>
        {apiNavigation.map((group, groupIndex) => (
          <NavigationStateProvider key={group.title} index={groupIndex}>
            <NavigationGroup
              group={group}
              tableOfContents={tableOfContents}
              className={groupIndex === 0 && 'md:mt-0'}
            />
          </NavigationStateProvider>
        ))}
        <li className="sticky bottom-0 z-10 mt-6 min-[416px]:hidden">
          <Button
            href="https://app.netbird.io/"
            variant="filled"
            className="w-full"
          >
            Sign in
          </Button>
        </li>
      </ul>
    </nav>
  )
}
export function TopLevelNavItem({ href, children }) {
  return (
    <li className="md:hidden">
      <Link
        href={href}
        className="block py-1 text-sm text-zinc-600 transition hover:text-zinc-900 dark:text-zinc-400 dark:hover:text-white"
      >
        {children}
      </Link>
    </li>
  )
}

export function NavLink({
  href,
  tag,
  active,
  isAnchorLink = false,
  children,
  links,
  isChildren = false,
}) {
  let router = useRouter()

  return (
    <div className={'relative'}>
      <Link
        href={href ? href : '#'}
        data-nb-link={active ? 1 : 0}
        aria-current={active ? 'page' : undefined}
        title={children}
        className={clsx(
          'flex justify-between gap-2 py-1 pr-3 text-sm transition',
          isAnchorLink ? 'pl-7' : 'pl-4',
          active
            ? 'text-zinc-900 dark:text-white'
            : 'text-zinc-600 hover:text-zinc-900 dark:text-zinc-400 dark:hover:text-white',
          isChildren ? 'pl-7' : 'pl-4'
        )}
      >
        <span className="truncate">{children}</span>
        {tag && (
          <Tag variant="small" color="zinc">
            {tag}
          </Tag>
        )}
      </Link>

      {links && (
        <ul role="list">
          {links.map((link, index) => (
            <motion.li key={index} className="relative">
              <NavLink
                href={link.href}
                active={link.href === router.pathname}
                isChildren={true}
              >
                {link.title}
              </NavLink>
            </motion.li>
          ))}
        </ul>
      )}
    </div>
  )
}

export function flattenNavItems(links, onlyLinks = false) {
  let output = []
  for (let link of links) {
    output.push(link)
    if (link.links) output.push(...flattenNavItems(link.links, onlyLinks))
  }
  if (onlyLinks) output = output.filter((link) => link.href)
  return output
}

export function VisibleSectionHighlight() {
  const router = useRouter()
  let height = remToPx(2)
  let offset = remToPx(0)
  const [activeIndex] = useNavigationState()
  const [top, setTop] = useState(0)

  useEffect(() => {
    setTop(offset + activeIndex * height)
  }, [activeIndex, router.pathname])

  return (
    activeIndex >= 0 && (
      <motion.div
        // layout
        initial={{ opacity: 0 }}
        animate={{ opacity: 1, transition: { delay: 0.2 } }}
        exit={{ opacity: 0 }}
        className="absolute inset-x-0 top-0 bg-zinc-800/2.5 will-change-transform dark:bg-white/2.5"
        style={{ borderRadius: 8, height, top }}
      />
    )
  )
}

export function ActivePageMarker() {
  const router = useRouter()
  let itemHeight = remToPx(2)
  let offset = remToPx(0.25)
  const [activeIndex] = useNavigationState()
  const [top, setTop] = useState(0)

  useEffect(() => {
    setTop(offset + activeIndex * itemHeight)
  }, [activeIndex, router.pathname])

  return (
    activeIndex >= 0 && (
      <motion.div
        // layout
        className="absolute left-2 h-6 w-px bg-orange-500"
        initial={{ opacity: 0 }}
        animate={{ opacity: 1, transition: { delay: 0.2 } }}
        exit={{ opacity: 0 }}
        style={{ top }}
      />
    )
  )
}

function NavigationGroup({ group, className, tableOfContents }) {
  let router = useRouter()
  let isActiveGroup =
    group.links.findIndex(
      (link) => link.href === router.pathname.replace('ipa', 'api')
    ) !== -1

  return (
    <li className={clsx('relative mt-6', className)}>
      <motion.h2
        // layout="position"
        data-nb-link={group.title}
        className="text-xs font-semibold text-zinc-900 dark:text-white"
      >
        {group.title}
      </motion.h2>
      <div className="relative mt-3 pl-2">
        <AnimatePresence>
          {isActiveGroup && (
            <VisibleSectionHighlight
              group={group}
              pathname={router.pathname.replace('ipa', 'api')}
            />
          )}
        </AnimatePresence>
        <motion.div
          // layout
          className="absolute inset-y-0 left-2 w-px bg-zinc-900/10 dark:bg-white/5"
        />
        <AnimatePresence initial={false}>
          {isActiveGroup && (
            <ActivePageMarker
              group={group}
              pathname={router.pathname.replace('ipa', 'api')}
            />
          )}
        </AnimatePresence>
        <ul role="list" className="border-l border-transparent">
          {group.links.map((link) => (
            <motion.li key={link.href} className="relative">
              <NavLink
                href={link.href}
                active={link.href === router.pathname.replace('ipa', 'api')}
              >
                {link.title}
              </NavLink>
              <AnimatePresence mode="popLayout" initial={false}>
                {link.href === router.pathname.replace('ipa', 'api') && (
                  <motion.ul
                    role="list"
                    initial={{ opacity: 0 }}
                    animate={{
                      opacity: 1,
                      transition: { delay: 0.1 },
                    }}
                    exit={{
                      opacity: 0,
                      transition: { duration: 0.15 },
                    }}
                  >
                    {router.route.startsWith('/ipa/resources') &&
                      tableOfContents?.map((section) => (
                        <li key={section.id}>
                          <NavLink
                            href={`${link.href}#${section.id}`}
                            tag={section.tag}
                            isAnchorLink
                          >
                            {section.title}
                          </NavLink>
                        </li>
                      ))}
                  </motion.ul>
                )}
              </AnimatePresence>
            </motion.li>
          ))}
        </ul>
      </div>
    </li>
  )
}