import React from 'react';
import {
  View, Text, TouchableOpacity, StyleSheet, Alert,
} from 'react-native';
import { useRouter } from 'expo-router';
import { Ionicons } from '@expo/vector-icons';
import { SafeAreaView } from 'react-native-safe-area-context';
import { useAuthStore } from '@store/authStore';
import { colors, typography, spacing, radius } from '@shared/theme';

/**
 * Tela de Perfil — 1LQ-0
 */
export default function ProfileScreen(): React.ReactElement {
  const router = useRouter();
  const { user, clearSession } = useAuthStore();

  function handleLogout(): void {
    Alert.alert(
      'Sair da conta',
      'Deseja sair da sua conta? Seus dados offline continuarão disponíveis.',
      [
        { text: 'Cancelar', style: 'cancel' },
        {
          text: 'Sair',
          style: 'destructive',
          onPress: async () => {
            await clearSession();
            router.replace('/(auth)/login');
          },
        },
      ],
    );
  }

  const displayName = user?.name ?? 'Usuário';
  const displayEmail = user?.email ?? 'email@exemplo.com';
  const isGoogleLinked = user?.googleId != null;

  return (
    <SafeAreaView style={styles.safe}>
      {/* Header */}
      <View style={styles.header}>
        <Text style={styles.headerTitle}>Perfil</Text>
      </View>

      <View style={styles.content}>
        {/* Avatar */}
        <View style={styles.avatarSection}>
          <View style={styles.avatarRing}>
            <Ionicons name="person-outline" size={40} color={colors.accent} />
          </View>
          <Text style={styles.userName}>{displayName}</Text>
          <Text style={styles.userEmail}>{displayEmail}</Text>
          {isGoogleLinked && (
            <View style={styles.googleBadge}>
              <Ionicons name="logo-google" size={14} color={colors.textPrimary} />
              <Text style={styles.googleBadgeText}>Conectado com Google</Text>
            </View>
          )}
        </View>

        {/* Conta */}
        <Text style={styles.sectionLabel}>CONTA</Text>
        <View style={styles.menuGroup}>
          <TouchableOpacity style={[styles.menuItem, styles.menuItemFirst]}>
            <Ionicons name="mail-outline" size={20} color={colors.textSecondary} />
            <View style={styles.menuItemContent}>
              <Text style={styles.menuItemLabel}>E-mail</Text>
              <Text style={styles.menuItemValue}>{displayEmail}</Text>
            </View>
            <Ionicons name="chevron-forward" size={18} color={colors.textSecondary} />
          </TouchableOpacity>
          <View style={styles.menuDivider} />
          <TouchableOpacity style={[styles.menuItem, styles.menuItemLast]}>
            <Ionicons name="lock-closed-outline" size={20} color={colors.textSecondary} />
            <View style={styles.menuItemContent}>
              <Text style={styles.menuItemLabel}>Senha</Text>
              <Text style={styles.menuItemValue}>••••••••</Text>
            </View>
            <Ionicons name="chevron-forward" size={18} color={colors.textSecondary} />
          </TouchableOpacity>
        </View>

        {/* Vinculações */}
        <Text style={styles.sectionLabel}>VINCULAÇÕES</Text>
        <View style={styles.menuGroup}>
          <View style={[styles.menuItem, styles.menuItemFirst, styles.menuItemLast]}>
            <Ionicons name="logo-google" size={20} color={colors.textSecondary} />
            <View style={styles.menuItemContent}>
              <Text style={styles.menuItemLabel}>Google</Text>
              <Text style={styles.menuItemValue}>{displayEmail}</Text>
            </View>
            <View style={[styles.linkedBadge, !isGoogleLinked && styles.unlinkedBadge]}>
              <Text style={[styles.linkedBadgeText, !isGoogleLinked && styles.unlinkedBadgeText]}>
                {isGoogleLinked ? 'Vinculado' : 'Vincular'}
              </Text>
            </View>
          </View>
        </View>

        {/* Logout */}
        <TouchableOpacity style={styles.logoutBtn} onPress={handleLogout}>
          <Ionicons name="log-out-outline" size={18} color={colors.error} />
          <Text style={styles.logoutText}>Sair da Conta</Text>
        </TouchableOpacity>
      </View>
    </SafeAreaView>
  );
}

const styles = StyleSheet.create({
  safe: { flex: 1, backgroundColor: colors.bgBase },
  header: {
    paddingHorizontal: spacing[5],
    paddingTop: spacing[5],
    paddingBottom: spacing[4],
  },
  headerTitle: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.xl,
    fontWeight: typography.fontWeight.bold,
    color: colors.textPrimary,
  },
  content: { flex: 1, paddingHorizontal: spacing[5], gap: spacing[5] },
  avatarSection: { alignItems: 'center', gap: spacing[2], paddingBottom: spacing[2] },
  avatarRing: {
    width: 80,
    height: 80,
    borderRadius: radius.full,
    borderWidth: 2,
    borderColor: colors.accent,
    alignItems: 'center',
    justifyContent: 'center',
    backgroundColor: colors.bgSurface,
  },
  userName: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.lg,
    fontWeight: typography.fontWeight.bold,
    color: colors.textPrimary,
  },
  userEmail: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.sm,
    color: colors.textSecondary,
  },
  googleBadge: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: 6,
    backgroundColor: colors.bgSurface,
    paddingHorizontal: spacing[3],
    paddingVertical: 5,
    borderRadius: radius.full,
    borderWidth: 1,
    borderColor: colors.border,
    marginTop: spacing[1],
  },
  googleBadgeText: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.xs,
    color: colors.textPrimary,
  },
  sectionLabel: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.xs,
    fontWeight: typography.fontWeight.bold,
    color: colors.textSecondary,
    letterSpacing: 0.8,
    textTransform: 'uppercase',
  },
  menuGroup: {
    backgroundColor: colors.bgSurface,
    borderRadius: radius.lg,
    borderWidth: 1,
    borderColor: colors.border,
    overflow: 'hidden',
    marginTop: -spacing[2],
  },
  menuItem: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: spacing[3],
    padding: spacing[4],
  },
  menuItemFirst: {},
  menuItemLast: {},
  menuItemContent: { flex: 1 },
  menuItemLabel: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.xs,
    color: colors.textSecondary,
    marginBottom: 2,
  },
  menuItemValue: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.base,
    color: colors.textPrimary,
  },
  menuDivider: { height: 1, backgroundColor: colors.border, marginLeft: spacing[5] + 20 + spacing[3] },
  linkedBadge: {
    backgroundColor: colors.bgHover,
    paddingHorizontal: spacing[3],
    paddingVertical: 5,
    borderRadius: radius.sm,
    borderWidth: 1,
    borderColor: colors.border,
  },
  unlinkedBadge: { borderColor: colors.accent, backgroundColor: colors.accentMuted },
  linkedBadgeText: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.xs,
    color: colors.textSecondary,
  },
  unlinkedBadgeText: { color: colors.accent },
  logoutBtn: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'center',
    gap: spacing[2],
    backgroundColor: 'rgba(255,107,107,0.12)',
    paddingVertical: spacing[4],
    borderRadius: radius.lg,
    borderWidth: 1,
    borderColor: 'rgba(255,107,107,0.3)',
  },
  logoutText: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.base,
    fontWeight: typography.fontWeight.medium,
    color: colors.error,
  },
});