import React from 'react'
import {
  ActivityIndicator,
  SafeAreaView,
  StyleSheet,
  TouchableOpacity,
  View,
} from 'react-native'
import {LinearGradient} from 'expo-linear-gradient'
import {msg, Trans} from '@lingui/macro'
import {useLingui} from '@lingui/react'

import {DM_SERVICE_HEADERS} from '#/lib/constants'
import {usePalette} from '#/lib/hooks/usePalette'
import {useWebMediaQueries} from '#/lib/hooks/useWebMediaQueries'
import {cleanError} from '#/lib/strings/errors'
import {colors, gradients, s} from '#/lib/styles'
import {useTheme} from '#/lib/ThemeContext'
import {isAndroid, isWeb} from '#/platform/detection'
import {useModalControls} from '#/state/modals'
import {useAgent, useSession, useSessionApi} from '#/state/session'
import {atoms as a, useTheme as useNewTheme} from '#/alf'
import {CircleInfo_Stroke2_Corner0_Rounded as CircleInfo} from '#/components/icons/CircleInfo'
import {Text as NewText} from '#/components/Typography'
import {resetToTab} from '../../../Navigation'
import {ErrorMessage} from '../util/error/ErrorMessage'
import {Text} from '../util/text/Text'
import * as Toast from '../util/Toast'
import {ScrollView, TextInput} from './util'

export const snapPoints = isAndroid ? ['90%'] : ['55%']

export function Component({}: {}) {
  const pal = usePalette('default')
  const theme = useTheme()
  const t = useNewTheme()
  const {currentAccount} = useSession()
  const agent = useAgent()
  const {removeAccount} = useSessionApi()
  const {_} = useLingui()
  const {closeModal} = useModalControls()
  const {isMobile} = useWebMediaQueries()
  const [isEmailSent, setIsEmailSent] = React.useState<boolean>(false)
  const [confirmCode, setConfirmCode] = React.useState<string>('')
  const [password, setPassword] = React.useState<string>('')
  const [isProcessing, setIsProcessing] = React.useState<boolean>(false)
  const [error, setError] = React.useState<string>('')
  const onPressSendEmail = async () => {
    setError('')
    setIsProcessing(true)
    try {
      await agent.com.atproto.server.requestAccountDelete()
      setIsEmailSent(true)
    } catch (e: any) {
      setError(cleanError(e))
    }
    setIsProcessing(false)
  }
  const onPressConfirmDelete = async () => {
    if (!currentAccount?.did) {
      throw new Error(`DeleteAccount modal: currentAccount.did is undefined`)
    }

    setError('')
    setIsProcessing(true)
    const token = confirmCode.replace(/\s/g, '')

    try {
      // inform chat service of intent to delete account
      const {success} = await agent.api.chat.bsky.actor.deleteAccount(
        undefined,
        {
          headers: DM_SERVICE_HEADERS,
        },
      )
      if (!success) {
        throw new Error('Failed to inform chat service of account deletion')
      }
      await agent.com.atproto.server.deleteAccount({
        did: currentAccount.did,
        password,
        token,
      })
      Toast.show(_(msg`Your account has been deleted`))
      resetToTab('HomeTab')
      removeAccount(currentAccount)
      closeModal()
    } catch (e: any) {
      setError(cleanError(e))
    }
    setIsProcessing(false)
  }
  const onCancel = () => {
    closeModal()
  }
  return (
    <SafeAreaView style={[s.flex1]}>
      <ScrollView style={[pal.view]} keyboardShouldPersistTaps="handled">
        <View style={[styles.titleContainer, pal.view]}>
          <Text type="title-xl" style={[s.textCenter, pal.text]}>
            <Trans>
              Delete Account{' '}
              <Text type="title-xl" style={[pal.text, s.bold]}>
                "
              </Text>
              <Text
                type="title-xl"
                numberOfLines={1}
                style={[
                  isMobile ? styles.titleMobile : styles.titleDesktop,
                  pal.text,
                  s.bold,
                ]}>
                {currentAccount?.handle}
              </Text>
              <Text type="title-xl" style={[pal.text, s.bold]}>
                "
              </Text>
            </Trans>
          </Text>
        </View>
        {!isEmailSent ? (
          <>
            <Text type="lg" style={[styles.description, pal.text]}>
              <Trans>
                For security reasons, we'll need to send a confirmation code to
                your email address.
              </Trans>
            </Text>
            {error ? (
              <View style={s.mt10}>
                <ErrorMessage message={error} />
              </View>
            ) : undefined}
            {isProcessing ? (
              <View style={[styles.btn, s.mt10]}>
                <ActivityIndicator />
              </View>
            ) : (
              <>
                <TouchableOpacity
                  style={styles.mt20}
                  onPress={onPressSendEmail}
                  accessibilityRole="button"
                  accessibilityLabel={_(msg`Send email`)}
                  accessibilityHint={_(
                    msg`Sends email with confirmation code for account deletion`,
                  )}>
                  <LinearGradient
                    colors={[
                      gradients.blueLight.start,
                      gradients.blueLight.end,
                    ]}
                    start={{x: 0, y: 0}}
                    end={{x: 1, y: 1}}
                    style={[styles.btn]}>
                    <Text type="button-lg" style={[s.white, s.bold]}>
                      <Trans context="action">Send Email</Trans>
                    </Text>
                  </LinearGradient>
                </TouchableOpacity>
                <TouchableOpacity
                  style={[styles.btn, s.mt10]}
                  onPress={onCancel}
                  accessibilityRole="button"
                  accessibilityLabel={_(msg`Cancel account deletion`)}
                  accessibilityHint=""
                  onAccessibilityEscape={onCancel}>
                  <Text type="button-lg" style={pal.textLight}>
                    <Trans context="action">Cancel</Trans>
                  </Text>
                </TouchableOpacity>
              </>
            )}

            <View style={[!isWeb && a.px_xl]}>
              <View
                style={[
                  a.w_full,
                  a.flex_row,
                  a.gap_sm,
                  a.mt_lg,
                  a.p_lg,
                  a.rounded_sm,
                  t.atoms.bg_contrast_25,
                ]}>
                <CircleInfo
                  size="md"
                  style={[
                    a.relative,
                    {
                      top: -1,
                    },
                  ]}
                />

                <NewText style={[a.leading_snug, a.flex_1]}>
                  <Trans>
                    You can also temporarily deactivate your account instead,
                    and reactivate it at any time.
                  </Trans>
                </NewText>
              </View>
            </View>
          </>
        ) : (
          <>
            {/* TODO: Update this label to be more concise */}
            <Text
              type="lg"
              style={[pal.text, styles.description]}
              nativeID="confirmationCode">
              <Trans>
                Check your inbox for an email with the confirmation code to
                enter below:
              </Trans>
            </Text>
            <TextInput
              style={[styles.textInput, pal.borderDark, pal.text, styles.mb20]}
              placeholder={_(msg`Confirmation code`)}
              placeholderTextColor={pal.textLight.color}
              keyboardAppearance={theme.colorScheme}
              value={confirmCode}
              onChangeText={setConfirmCode}
              accessibilityLabelledBy="confirmationCode"
              accessibilityLabel={_(msg`Confirmation code`)}
              accessibilityHint={_(
                msg`Input confirmation code for account deletion`,
              )}
            />
            <Text
              type="lg"
              style={[pal.text, styles.description]}
              nativeID="password">
              <Trans>Please enter your password as well:</Trans>
            </Text>
            <TextInput
              style={[styles.textInput, pal.borderDark, pal.text]}
              placeholder={_(msg`Password`)}
              placeholderTextColor={pal.textLight.color}
              keyboardAppearance={theme.colorScheme}
              secureTextEntry
              value={password}
              onChangeText={setPassword}
              accessibilityLabelledBy="password"
              accessibilityLabel={_(msg`Password`)}
              accessibilityHint={_(msg`Input password for account deletion`)}
            />
            {error ? (
              <View style={styles.mt20}>
                <ErrorMessage message={error} />
              </View>
            ) : undefined}
            {isProcessing ? (
              <View style={[styles.btn, s.mt10]}>
                <ActivityIndicator />
              </View>
            ) : (
              <>
                <TouchableOpacity
                  style={[styles.btn, styles.evilBtn, styles.mt20]}
                  onPress={onPressConfirmDelete}
                  accessibilityRole="button"
                  accessibilityLabel={_(msg`Confirm delete account`)}
                  accessibilityHint="">
                  <Text type="button-lg" style={[s.white, s.bold]}>
                    <Trans>Delete my account</Trans>
                  </Text>
                </TouchableOpacity>
                <TouchableOpacity
                  style={[styles.btn, s.mt10]}
                  onPress={onCancel}
                  accessibilityRole="button"
                  accessibilityLabel={_(msg`Cancel account deletion`)}
                  accessibilityHint={_(msg`Exits account deletion process`)}
                  onAccessibilityEscape={onCancel}>
                  <Text type="button-lg" style={pal.textLight}>
                    <Trans context="action">Cancel</Trans>
                  </Text>
                </TouchableOpacity>
              </>
            )}
          </>
        )}
      </ScrollView>
    </SafeAreaView>
  )
}

const styles = StyleSheet.create({
  titleContainer: {
    display: 'flex',
    flexDirection: 'row',
    justifyContent: 'center',
    flexWrap: 'wrap',
    marginTop: 12,
    marginBottom: 12,
    marginLeft: 20,
    marginRight: 20,
  },
  titleMobile: {
    textAlign: 'center',
  },
  titleDesktop: {
    textAlign: 'center',
    overflow: 'hidden',
    whiteSpace: 'nowrap',
    textOverflow: 'ellipsis',
    // @ts-ignore only rendered on web
    maxWidth: '400px',
  },
  description: {
    textAlign: 'center',
    paddingHorizontal: 22,
    marginBottom: 10,
  },
  mt20: {
    marginTop: 20,
  },
  mb20: {
    marginBottom: 20,
  },
  textInput: {
    borderWidth: 1,
    borderRadius: 6,
    paddingHorizontal: 16,
    paddingVertical: 12,
    fontSize: 20,
    marginHorizontal: 20,
  },
  btn: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'center',
    borderRadius: 32,
    padding: 14,
    marginHorizontal: 20,
  },
  evilBtn: {
    backgroundColor: colors.red4,
  },
})