import React, { useState } from 'react';

import {

  View,

  Text,

  StyleSheet,

  ScrollView,

  KeyboardAvoidingView,

  Platform,

  Alert,

} from 'react-native';

import { Link, useLocalSearchParams, router } from 'expo-router';

import { SafeAreaView } from 'react-native-safe-area-context';

import { useThemeColor } from '@/hooks/use-theme-color';

import { Button, Input } from '@/components/ui';

import { useAuth } from '@/context/AuthContext';

export default function ResetPasswordScreen() {

  const { token } = useLocalSearchParams<{ token: string }>();

  const [password, setPassword] = useState('');

  const [confirmPassword, setConfirmPassword] = useState('');

  const [errors, setErrors] = useState<{

    password?: string;

    confirmPassword?: string;

  }>({});

  const { resetPassword } = useAuth();

  const [loading, setLoading] = useState(false);

  const textColor = useThemeColor({}, 'text');

  const backgroundColor = useThemeColor({}, 'background');

  const tintColor = useThemeColor({}, 'tint');

  const validateForm = () => {

    const newErrors: typeof errors = {};

    if (!password) {

      newErrors.password = 'A senha é obrigatória';

    } else if (password.length < 6) {

      newErrors.password = 'A senha deve conter pelo menos 6 caracteres';

    }

    if (!confirmPassword) {

      newErrors.confirmPassword = 'Por favor confirme sua senha';

    } else if (password !== confirmPassword) {

      newErrors.confirmPassword = 'As senhas não coincidem';

    }

    setErrors(newErrors);

    return Object.keys(newErrors).length === 0;

  };

  const handleResetPassword = async () => {

    if (!validateForm()) return;

    if (!token) {

      Alert.alert('Erro: ', 'Token de reset não encontrado. Por favor, solicite um novo link de recuperação.');

      return;

    }

    setLoading(true);

    try {

      await resetPassword(token, password);

      Alert.alert('Sucesso!', 'Senha recuperada com sucesso', [

        {

          text: 'OK',

          onPress: () => router.replace('/auth/login'),

        },

      ]);

    } catch (error: any) {

      Alert.alert('Erro: ', error.message || 'Falha em recuperar a conta');

    } finally {

      setLoading(false);

    }

  };

  return (

    <SafeAreaView style={[styles.container, { backgroundColor }]}>

      <KeyboardAvoidingView

        behavior='height'

        style={styles.keyboardView}

      >

        <ScrollView

          contentContainerStyle={styles.scrollContainer}

          showsVerticalScrollIndicator={false}

        >

          <View style={styles.header}>

            <Text style={[styles.title, { color: textColor }]}>Recuperar a conta</Text>

            <Text style={[styles.subtitle, { color: textColor, opacity: 0.7 }]}>

              Digite uma nova senha para sua conta

            </Text>

          </View>

          <View style={styles.form}>

            <Input

              label="Nova senha"

              type="password"

              value={password}

              onChangeText={setPassword}

              placeholder="Digite uma nova senha"

              error={errors.password}

              showPasswordToggle

            />

            <Input

              label="Confirmar nova senha"

              type="password"

              value={confirmPassword}

              onChangeText={setConfirmPassword}

              placeholder="Confirme a nova senha"

              error={errors.confirmPassword}

              showPasswordToggle

            />

            <Button

              title="Trocar senha"

              onPress={handleResetPassword}

              loading={loading}

              style={styles.resetButton}

            />

          </View>

          <View style={styles.footer}>

            <Text style={[styles.footerText, { color: textColor, opacity: 0.7 }]}>

              Lembrou da senha?{' '}

            </Text>

            <Link href="/auth/login" asChild style={[styles.link, { color: tintColor }]}>

              <Text style={[styles.link, { color: tintColor }]}>

                Faça login

              </Text>

            </Link>

          </View>

        </ScrollView>

      </KeyboardAvoidingView>

    </SafeAreaView>

  );

}

const styles = StyleSheet.create({

  container: {

    flex: 1,

  },

  keyboardView: {

    flex: 1,

  },

  scrollContainer: {

    flexGrow: 1,

    paddingHorizontal: 24,

    justifyContent: 'center',

    minHeight: '100%',

  },

  header: {

    alignItems: 'center',

    marginBottom: 40,

  },

  title: {

    fontSize: 28,

    fontWeight: 'bold',

    marginBottom: 8,

  },

  subtitle: {

    fontSize: 16,

    textAlign: 'center',

  },

  form: {

    marginBottom: 32,

  },

  resetButton: {

    marginTop: 8,

  },

  link: {

    textAlign: 'center',

    fontSize: 14,

    fontWeight: '500',

  },

  footer: {

    flexDirection: 'row',

    justifyContent: 'center',

    alignItems: 'center',

    marginTop: 'auto',

    paddingBottom: 20,

  },

  footerText: {

    fontSize: 14,

  },

});