'use client'
import { useState } from 'react'
import { useTranslation } from 'react-i18next'

import { useContext } from 'use-context-selector'
import s from './index.module.css'
import Collapse from '@/app/components/header/account-setting/collapse'
import type { IItem } from '@/app/components/header/account-setting/collapse'
import Modal from '@/app/components/base/modal'
import Confirm from '@/app/components/base/confirm'
import Button from '@/app/components/base/button'
import { updateUserProfile } from '@/service/common'
import { useAppContext } from '@/context/app-context'
import { ToastContext } from '@/app/components/base/toast'
import AppIcon from '@/app/components/base/app-icon'
import Avatar from '@/app/components/base/avatar'
import { IS_CE_EDITION } from '@/config'
import Input from '@/app/components/base/input'

const titleClassName = `
  text-sm font-medium text-gray-900
`
const descriptionClassName = `
  mt-1 text-xs font-normal text-gray-500
`

const validPassword = /^(?=.*[a-zA-Z])(?=.*\d).{8,}$/

export default function AccountPage() {
  const { t } = useTranslation()
  const { systemFeatures } = useAppContext()
  const { mutateUserProfile, userProfile, apps } = useAppContext()
  const { notify } = useContext(ToastContext)
  const [editNameModalVisible, setEditNameModalVisible] = useState(false)
  const [editName, setEditName] = useState('')
  const [editing, setEditing] = useState(false)
  const [editPasswordModalVisible, setEditPasswordModalVisible] = useState(false)
  const [currentPassword, setCurrentPassword] = useState('')
  const [password, setPassword] = useState('')
  const [confirmPassword, setConfirmPassword] = useState('')
  const [showDeleteAccountModal, setShowDeleteAccountModal] = useState(false)
  const [showCurrentPassword, setShowCurrentPassword] = useState(false)
  const [showPassword, setShowPassword] = useState(false)
  const [showConfirmPassword, setShowConfirmPassword] = useState(false)

  const handleEditName = () => {
    setEditNameModalVisible(true)
    setEditName(userProfile.name)
  }
  const handleSaveName = async () => {
    try {
      setEditing(true)
      await updateUserProfile({ url: 'account/name', body: { name: editName } })
      notify({ type: 'success', message: t('common.actionMsg.modifiedSuccessfully') })
      mutateUserProfile()
      setEditNameModalVisible(false)
      setEditing(false)
    }
    catch (e) {
      notify({ type: 'error', message: (e as Error).message })
      setEditNameModalVisible(false)
      setEditing(false)
    }
  }

  const showErrorMessage = (message: string) => {
    notify({
      type: 'error',
      message,
    })
  }
  const valid = () => {
    if (!password.trim()) {
      showErrorMessage(t('login.error.passwordEmpty'))
      return false
    }
    if (!validPassword.test(password)) {
      showErrorMessage(t('login.error.passwordInvalid'))
      return false
    }
    if (password !== confirmPassword) {
      showErrorMessage(t('common.account.notEqual'))
      return false
    }

    return true
  }
  const resetPasswordForm = () => {
    setCurrentPassword('')
    setPassword('')
    setConfirmPassword('')
  }
  const handleSavePassword = async () => {
    if (!valid())
      return
    try {
      setEditing(true)
      await updateUserProfile({
        url: 'account/password',
        body: {
          password: currentPassword,
          new_password: password,
          repeat_new_password: confirmPassword,
        },
      })
      notify({ type: 'success', message: t('common.actionMsg.modifiedSuccessfully') })
      mutateUserProfile()
      setEditPasswordModalVisible(false)
      resetPasswordForm()
      setEditing(false)
    }
    catch (e) {
      notify({ type: 'error', message: (e as Error).message })
      setEditPasswordModalVisible(false)
      setEditing(false)
    }
  }

  const renderAppItem = (item: IItem) => {
    return (
      <div className='flex px-3 py-1'>
        <div className='mr-3'>
          <AppIcon size='tiny' />
        </div>
        <div className='mt-[3px] text-xs font-medium text-gray-700 leading-[18px]'>{item.name}</div>
      </div>
    )
  }

  return (
    <>
      <div className='pt-2 pb-3'>
        <h4 className='title-2xl-semi-bold text-primary'>{t('common.account.myAccount')}</h4>
      </div>
      <div className='mb-8 p-6 rounded-xl flex items-center bg-gradient-to-r from-background-gradient-bg-fill-chat-bg-2 to-background-gradient-bg-fill-chat-bg-1'>
        <Avatar name={userProfile.name} size={64} />
        <div className='ml-4'>
          <p className='system-xl-semibold text-text-primary'>{userProfile.name}</p>
          <p className='system-xs-regular text-text-tertiary'>{userProfile.email}</p>
        </div>
      </div>
      <div className='mb-8'>
        <div className={titleClassName}>{t('common.account.name')}</div>
        <div className='flex items-center justify-between gap-2 w-full mt-2'>
          <div className='flex-1 bg-gray-100 rounded-md p-2 system-sm-regular text-components-input-text-filled '>
            <span className='pl-1'>{userProfile.name}</span>
          </div>
          <div className=' bg-gray-100 rounded-md py-2 px-3 cursor-pointer system-sm-medium text-components-input-text-filled' onClick={handleEditName}>
            {t('common.operation.edit')}
          </div>
        </div>
      </div>
      <div className='mb-8'>
        <div className={titleClassName}>{t('common.account.email')}</div>
        <div className='flex items-center justify-between gap-2 w-full mt-2'>
          <div className='flex-1 bg-gray-100 rounded-md p-2 system-sm-regular text-components-input-text-filled '>
            <span className='pl-1'>{userProfile.email}</span>
          </div>
        </div>
      </div>
      {
        systemFeatures.enable_email_password_login && (
          <div className='mb-8 flex justify-between gap-2'>
            <div>
              <div className='mb-1 text-sm font-medium text-gray-900'>{t('common.account.password')}</div>
              <div className='mb-2 text-xs text-gray-500'>{t('common.account.passwordTip')}</div>
            </div>
            <Button onClick={() => setEditPasswordModalVisible(true)}>{userProfile.is_password_set ? t('common.account.resetPassword') : t('common.account.setPassword')}</Button>
          </div>
        )
      }
      <div className='mb-6 border-[0.5px] border-gray-100' />
      <div className='mb-8'>
        <div className={titleClassName}>{t('common.account.langGeniusAccount')}</div>
        <div className={descriptionClassName}>{t('common.account.langGeniusAccountTip')}</div>
        {!!apps.length && (
          <Collapse
            title={`${t('common.account.showAppLength', { length: apps.length })}`}
            items={apps.map(app => ({ key: app.id, name: app.name }))}
            renderItem={renderAppItem}
            wrapperClassName='mt-2'
          />
        )}
        {!IS_CE_EDITION && <Button className='mt-2 text-[#D92D20]' onClick={() => setShowDeleteAccountModal(true)}>{t('common.account.delete')}</Button>}
      </div>
      {
        editNameModalVisible && (
          <Modal
            isShow
            onClose={() => setEditNameModalVisible(false)}
            className={s.modal}
          >
            <div className='mb-6 text-lg font-medium text-gray-900'>{t('common.account.editName')}</div>
            <div className={titleClassName}>{t('common.account.name')}</div>
            <Input className='mt-2'
              value={editName}
              onChange={e => setEditName(e.target.value)}
            />
            <div className='flex justify-end mt-10'>
              <Button className='mr-2' onClick={() => setEditNameModalVisible(false)}>{t('common.operation.cancel')}</Button>
              <Button
                disabled={editing || !editName}
                variant='primary'
                onClick={handleSaveName}
              >
                {t('common.operation.save')}
              </Button>
            </div>
          </Modal>
        )
      }
      {
        editPasswordModalVisible && (
          <Modal
            isShow
            onClose={() => {
              setEditPasswordModalVisible(false)
              resetPasswordForm()
            }}
            className={s.modal}
          >
            <div className='mb-6 text-lg font-medium text-gray-900'>{userProfile.is_password_set ? t('common.account.resetPassword') : t('common.account.setPassword')}</div>
            {userProfile.is_password_set && (
              <>
                <div className={titleClassName}>{t('common.account.currentPassword')}</div>
                <div className='relative mt-2'>
                  <Input
                    type={showCurrentPassword ? 'text' : 'password'}
                    value={currentPassword}
                    onChange={e => setCurrentPassword(e.target.value)}
                  />

                  <div className="absolute inset-y-0 right-0 flex items-center">
                    <Button
                      type="button"
                      variant='ghost'
                      onClick={() => setShowCurrentPassword(!showCurrentPassword)}
                    >
                      {showCurrentPassword ? '👀' : '😝'}
                    </Button>
                  </div>
                </div>
              </>
            )}
            <div className='mt-8 text-sm font-medium text-gray-900'>
              {userProfile.is_password_set ? t('common.account.newPassword') : t('common.account.password')}
            </div>
            <div className='relative mt-2'>
              <Input
                type={showPassword ? 'text' : 'password'}
                value={password}
                onChange={e => setPassword(e.target.value)}
              />
              <div className="absolute inset-y-0 right-0 flex items-center">
                <Button
                  type="button"
                  variant='ghost'
                  onClick={() => setShowPassword(!showPassword)}
                >
                  {showPassword ? '👀' : '😝'}
                </Button>
              </div>
            </div>
            <div className='mt-8 text-sm font-medium text-gray-900'>{t('common.account.confirmPassword')}</div>
            <div className='relative mt-2'>
              <Input
                type={showConfirmPassword ? 'text' : 'password'}
                value={confirmPassword}
                onChange={e => setConfirmPassword(e.target.value)}
              />
              <div className="absolute inset-y-0 right-0 flex items-center">
                <Button
                  type="button"
                  variant='ghost'
                  onClick={() => setShowConfirmPassword(!showConfirmPassword)}
                >
                  {showConfirmPassword ? '👀' : '😝'}
                </Button>
              </div>
            </div>
            <div className='flex justify-end mt-10'>
              <Button className='mr-2' onClick={() => {
                setEditPasswordModalVisible(false)
                resetPasswordForm()
              }}>{t('common.operation.cancel')}</Button>
              <Button
                disabled={editing}
                variant='primary'
                onClick={handleSavePassword}
              >
                {userProfile.is_password_set ? t('common.operation.reset') : t('common.operation.save')}
              </Button>
            </div>
          </Modal>
        )
      }
      {
        showDeleteAccountModal && (
          <Confirm
            isShow
            onCancel={() => setShowDeleteAccountModal(false)}
            onConfirm={() => setShowDeleteAccountModal(false)}
            showCancel={false}
            type='warning'
            title={t('common.account.delete')}
            content={
              <>
                <div className='my-1 text-[#D92D20] text-sm leading-5'>
                  {t('common.account.deleteTip')}
                </div>
                <div className='mt-3 text-sm leading-5'>
                  <span>{t('common.account.deleteConfirmTip')}</span>
                  <a
                    className='text-primary-600 cursor'
                    href={`mailto:support@dify.ai?subject=Delete Account Request&body=Delete Account: ${userProfile.email}`}
                    target='_blank'
                    rel='noreferrer noopener'
                    onClick={(e) => {
                      e.preventDefault()
                      window.location.href = e.currentTarget.href
                    }}
                  >
                    support@dify.ai
                  </a>
                </div>
                <div className='my-2 px-3 py-2 rounded-lg bg-gray-100 text-sm font-medium leading-5 text-gray-800'>{`${t('common.account.delete')}: ${userProfile.email}`}</div>
              </>
            }
            confirmText={t('common.operation.ok') as string}
          />
        )
      }
    </>
  )
}