// Dependencies
import { uiRoles as roles } from '@freesewing/config'
import { userAvatarUrl } from '@freesewing/utils'
// Hooks
import React, { useState, useContext, useEffect } from 'react'
import { useAccount } from '@freesewing/react/hooks/useAccount'
import { useBackend } from '@freesewing/react/hooks/useBackend'
// Context
import { LoadingStatusContext } from '@freesewing/react/context/LoadingStatus'
import { ModalContext } from '@freesewing/react/context/Modal'
// Components
import { Spinner } from '@freesewing/react/components/Spinner'
//import { Hits } from 'shared/components/admin.mjs'
import { Link as WebLink } from '@freesewing/react/components/Link'
import { SearchIcon } from '@freesewing/react/components/Icon'
import { KeyVal } from '@freesewing/react/components/KeyVal'
import { Markdown } from '@freesewing/react/components/Markdown'
import { ModalWrapper } from '@freesewing/react/components/Modal'
import { AccountStatus, UserRole } from '@freesewing/react/components/Account'

export const SubscriberAdministration = ({ page }) => {
  const [subscribers, setSubscribers] = useState()
  const [q, setQ] = useState()
  const [hits, setHits] = useState([])
  const backend = useBackend()

  const loadSubscribers = async () => {
    const [status, body] = await backend.adminLoadSubscribers()
    if (status === 200 && body.subscribers) setSubscribers(body.subscribers)
  }

  const search = async () => {
    if (!subscribers) await loadSubscribers()
    const found = []
    for (const lang in subscribers) {
      found.push(
        ...subscribers[lang]
          .filter((sub) => sub.email.toLowerCase().includes(q.toLowerCase()))
          .map((sub) => ({ ...sub, lang }))
      )
    }
    setHits(found)
  }

  const unsubscribe = async (ehash) => {
    await backend.newsletterUnsubscribe(ehash)
    await loadSubscribers()
    await search()
  }

  return (
    <>
      {subscribers ? (
        <>
          <h5>Search subscribers</h5>
          <div className="tw:flex tw:flex-row tw:gap-2 tw:items-center">
            <input
              autoFocus
              value={q}
              onChange={(evt) => setQ(evt.target.value)}
              className="tw:daisy-input tw:w-full tw:daisy-input-bordered tw:flex tw:flex-row"
              type="text"
              placeholder="Username, ID, or E-mail address"
            />
            <button onClick={search} className="tw:daisy-btn tw:daisy-btn-primary">
              <SearchIcon />
            </button>
          </div>
          <table className="tw:table tw:my-4">
            <thead>
              <tr>
                <th className="tw:text-right">Email</th>
                <th className="tw:w-12">Language</th>
                <th>Unsubscribe</th>
              </tr>
            </thead>
            <tbody>
              {hits.map((hit, i) => (
                <tr key={i}>
                  <td className="tw:text-right">
                    <b>{hit.email}</b>
                  </td>
                  <td className="tw:w-12">{hit.lang.toUpperCase()}</td>
                  <td className="tw:w-full">
                    <button
                      className="tw:daisy-btn tw:daisy-btn-link"
                      onClick={() => unsubscribe(hit.ehash)}
                    >
                      Unsubscribe
                    </button>
                  </td>
                </tr>
              ))}
            </tbody>
          </table>
        </>
      ) : (
        <button
          className="tw:daisy-btn tw:daisy-btn-primary tw:daisy-btn-lg"
          onClick={loadSubscribers}
        >
          Load Subscribers
        </button>
      )}
    </>
  )
}

export const UserAdministration = ({ Link = false }) => {
  const backend = useBackend()

  const [q, setQ] = useState('')
  const [results, setResults] = useState()
  const [loading, setLoading] = useState(false)

  const search = async () => {
    /*
     * Search backend
     */
    setLoading(true)
    const [status, body] = await backend.adminSearchUsers(q)
    if (status === 200 && body.result === 'success' && body.users) {
      setResults(body.users)
    }
    setLoading(false)
  }

  return (
    <>
      <div className="tw:flex tw:flex-row tw:gap-8 tw:items-start tw:w-full">
        <div className="tw:grow">
          <h5>Search users</h5>
          <div className="tw:flex tw:flex-row tw:gap-2 tw:items-center">
            <input
              autoFocus
              value={q}
              onChange={(evt) => setQ(evt.target.value)}
              className="tw:daisy-input tw:w-full tw:daisy-input-bordered tw:flex tw:flex-row"
              type="text"
              placeholder="Username, ID, or E-mail address"
            />
            <button
              onClick={search}
              className="tw:daisy-btn tw:daisy-btn-primary"
              disabled={q.length < 3}
            >
              <SearchIcon />
            </button>
          </div>
          {loading ? <Spinner /> : <Hits {...{ backend, results, Link }} />}
        </div>
      </div>
    </>
  )
}

export const Hits = ({ results, Link = false }) => {
  if (!Link) Link = WebLink

  return (
    <>
      {results && results.username && results.username.length > 0 && (
        <>
          <h2>Results based on username</h2>
          {results.username.map((user) => (
            <User user={user} key={user.id} Link={Link} />
          ))}
        </>
      )}
      {results && results.email && results.email.length > 0 && (
        <>
          <h2>Results based on E-mail address</h2>
          {results.email.map((user) => (
            <User user={user} key={user.id} Link={Link} />
          ))}
        </>
      )}
    </>
  )
}

export const User = ({ user, Link }) => {
  const { setModal } = useContext(ModalContext)

  return (
    <div className="tw:flex tw:flex-row tw:w-full tw:gap-4 tw:my-2">
      <button
        className="tw:w-24 tw:h-24 tw:bg-base-100 tw:rounded-lg tw:shadow tw:shrink-0"
        onClick={() =>
          setModal(
            <ModalWrapper>
              <img src={userAvatarUrl({ ihash: user.ihash, variant: 'public' })} />
            </ModalWrapper>
          )
        }
        style={{
          backgroundImage: `url(${userAvatarUrl({ ihash: user.ihash, variant: 'sq500' })})`,
          backgroundSize: 'cover',
          backgroundColor: '#ccc',
        }}
      ></button>
      <div className="tw:w-full tw:flex tw:flex-col tw:gap-1">
        <div className="tw:w-full tw:flex tw:flex-row tw:flex-wrap tw:gap-1">
          <Link href={`/users/?id=${user.id}`}>{user.username}</Link>
          <KeyVal k="id" val={user.id} />
        </div>
        <div className="tw:w-full tw:flex tw:flex-row tw:flex-wrap tw:gap-1">
          <UserRole role={user.role} />
          <AccountStatus status={user.status} />
        </div>
        <div className="tw:w-full tw:flex tw:flex-row tw:flex-wrap tw:gap-1">
          <button
            className="tw:daisy-btn tw:daisy-btn-primary tw:daisy-btn-sm tw:daisy-btn-outline"
            onClick={() =>
              setModal(
                <ModalWrapper>
                  <pre>{JSON.stringify(user, null, 2)}</pre>
                </ModalWrapper>
              )
            }
          >
            Details
          </button>
          <ImpersonateButton userId={user.id} />
        </div>
      </div>
    </div>
  )
}

export const ImpersonateButton = ({ userId }) => {
  const backend = useBackend()
  const { setLoadingStatus } = useContext(LoadingStatusContext)
  const { impersonate } = useAccount()

  if (!userId) return null

  const impersonateUser = async () => {
    setLoadingStatus([true, 'Contacting backend'])
    const [status, body] = await backend.adminImpersonateUser(userId)
    if (status === 200 && body.result === 'success') {
      impersonate(body)
      setLoadingStatus([true, 'Now impersonating', true, true])
    } else setLoadingStatus([true, 'An error occured', true, false])
  }

  return (
    <button
      className="tw:daisy-btn tw:daisy-btn-primary tw:daisy-btn-sm tw:daisy-btn-outline"
      onClick={impersonateUser}
    >
      Impersonate
    </button>
  )
}

export const Row = ({ title, val }) => (
  <tr className="py-1">
    <td className="text-sm px-2 text-right font-bold">{title}</td>
    <td className="text-sm">{val}</td>
  </tr>
)

export const ManageUser = ({ userId }) => {
  // Hooks
  const backend = useBackend()
  const { setLoadingStatus } = useContext(LoadingStatusContext)
  const { account } = useAccount()
  const { role } = account

  // State
  const [user, setUser] = useState({})
  const [patterns, setPatterns] = useState({})
  const [sets, setSets] = useState({})

  // Effect
  useEffect(() => {
    const loadUser = async () => {
      const result = await backend.adminLoadUser(userId)
      if (result.success) {
        setUser(result.data.user)
        setPatterns(result.data.patterns)
        setSets(result.data.sets)
      }
    }
    loadUser()
  }, [userId])

  const updateUser = async (data) => {
    setLoadingStatus([true, 'status:contactingBackend'])
    const result = await backend.adminUpdateUser({ id: userId, data })
    if (result.success) {
      setLoadingStatus([true, 'status:settingsSaved', true, true])
      setUser(result.data.user)
    } else setLoadingStatus([true, 'status:backendError', true, false])
  }

  return user.id ? (
    <div className="my-8">
      <ShowUser
        user={user}
        button={role === 'admin' ? <ImpersonateButton userId={user.id} /> : null}
      />
      {role === 'admin' ? (
        <div className="flex flex-row flex-wrap gap-2 my-2">
          {roles.map((role) => (
            <button
              key={role}
              className="btn btn-primary btn-outline btn-sm"
              onClick={() => updateUser({ role })}
              disabled={role === user.role}
            >
              Assign {role} role
            </button>
          ))}
        </div>
      ) : null}
      <div className="flex flex-row flex-wrap gap-2 my-2 mb-4">
        {user.mfaEnabled && (
          <button
            className="btn btn-warning btn-outline btn-sm"
            onClick={() => updateUser({ mfaEnabled: false })}
          >
            Disable MFA
          </button>
        )}
        {Object.keys(freeSewingConfig.statuses).map((status) => (
          <button
            key={status}
            className="btn btn-warning btn-outline btn-sm"
            onClick={() => updateUser({ status })}
            disabled={Number(status) === user.status}
          >
            Set {freeSewingConfig.statuses[status].name.toUpperCase()} status
          </button>
        ))}
      </div>
      <Tabs tabs="Account, Patterns, Sets">
        <Tab tabId="Account">{user.id ? <Json js={user} /> : null}</Tab>
        <Tab tabId="Patterns">{patterns ? <Json js={patterns} /> : null}</Tab>
        <Tab id="Sets">{sets ? <Json js={sets} /> : null}</Tab>
      </Tabs>
    </div>
  ) : (
    <Loading />
  )
}