import React, { useEffect, useRef } from 'react';
import {
  View,
  Text,
  TouchableOpacity,
  StyleSheet,
  Animated,
  Alert,
} from 'react-native';
import { useRouter } from 'expo-router';
import { SvgXml } from 'react-native-svg';
import { colors, typography, spacing, radius } from '@shared/theme';
import { readNFCTagUseCase, nfcRepository } from '@infrastructure/container';

const NFC_SVG = `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
  <g stroke="${colors.textSecondary}" stroke-width="10" fill="none">
    <path d="M 23.49 41.51 A 12 12 0 0 1 23.49 58.49"/>
    <path d="M 34.80 30.20 A 28 28 0 0 1 34.80 69.80"/>
    <path d="M 46.11 18.89 A 44 44 0 0 1 46.11 81.11"/>
    <path d="M 57.43 7.57 A 60 60 0 0 1 57.43 92.43"/>
  </g>
</svg>`;

/**
 * Bottom sheet modal de leitura NFC — artboard 1RY-0
 */
export default function NFCReaderScreen(): React.ReactElement {
  const router = useRouter();
  const ring1 = useRef(new Animated.Value(0)).current;
  const ring2 = useRef(new Animated.Value(0)).current;
  const ring3 = useRef(new Animated.Value(0)).current;

  useEffect(() => {
    const pulse = (ring: Animated.Value, delay: number) =>
      Animated.loop(
        Animated.sequence([
          Animated.delay(delay),
          Animated.timing(ring, {
            toValue: 1,
            duration: 1400,
            useNativeDriver: true,
          }),
          Animated.timing(ring, {
            toValue: 0,
            duration: 0,
            useNativeDriver: true,
          }),
        ]),
      );

    const a1 = pulse(ring1, 0);
    const a2 = pulse(ring2, 400);
    const a3 = pulse(ring3, 800);
    a1.start();
    a2.start();
    a3.start();

    startReading();

    return () => {
      a1.stop();
      a2.stop();
      a3.stop();
      nfcRepository.cancelSession().catch(() => {});
    };
  }, []);

  async function startReading(): Promise<void> {
    try {
      const filamentId = await readNFCTagUseCase.execute();
      router.replace(`/(app)/inventory/${filamentId}` as never);
    } catch (err: unknown) {
      const message = err instanceof Error ? err.message : 'Erro ao ler a tag.';
      Alert.alert('Erro NFC', message, [{ text: 'OK', onPress: () => router.back() }]);
    }
  }

  const ringStyle = (anim: Animated.Value) => ({
    opacity: anim.interpolate({ inputRange: [0, 0.5, 1], outputRange: [0.5, 0.15, 0] }),
    transform: [{ scale: anim.interpolate({ inputRange: [0, 1], outputRange: [1, 2.2] }) }],
  });

  return (
    <View style={styles.overlay}>
      {/* Bottom sheet */}
      <View style={styles.sheet}>
        {/* Drag handle */}
        <View style={styles.handle} />

        {/* NFC animation area */}
        <View style={styles.iconArea}>
          <Animated.View style={[styles.ring, ringStyle(ring3)]} />
          <Animated.View style={[styles.ring, ringStyle(ring2)]} />
          <Animated.View style={[styles.ring, ringStyle(ring1)]} />
          <View style={styles.iconCircle}>
            <SvgXml xml={NFC_SVG} width={40} height={40} />
          </View>
        </View>

        {/* Status badge */}
        <View style={styles.badge}>
          <View style={styles.badgeDot} />
          <Text style={styles.badgeText}>LENDO...</Text>
        </View>

        {/* Text */}
        <Text style={styles.title}>Aguardando NFC</Text>
        <Text style={styles.subtitle}>
          Aproxime a tag do carretel ao sensor NFC do seu dispositivo
        </Text>

        {/* Cancel */}
        <TouchableOpacity
          style={styles.cancelBtn}
          onPress={() => {
            nfcRepository.cancelSession().catch(() => {});
            router.back();
          }}
        >
          <Text style={styles.cancelText}>Cancelar</Text>
        </TouchableOpacity>
      </View>
    </View>
  );
}

const RING_SIZE = 120;

const styles = StyleSheet.create({
  overlay: {
    flex: 1,
    backgroundColor: 'rgba(0,0,0,0.6)',
    justifyContent: 'flex-end',
  },
  sheet: {
    backgroundColor: colors.bgSurface,
    borderTopLeftRadius: radius.xl,
    borderTopRightRadius: radius.xl,
    paddingBottom: spacing[10],
    paddingHorizontal: spacing[6],
    alignItems: 'center',
    gap: spacing[4],
    paddingTop: spacing[3],
  },
  handle: {
    width: 36,
    height: 4,
    borderRadius: radius.full,
    backgroundColor: colors.border,
    marginBottom: spacing[4],
  },
  iconArea: {
    width: RING_SIZE * 2.2,
    height: RING_SIZE * 2.2,
    alignItems: 'center',
    justifyContent: 'center',
  },
  ring: {
    position: 'absolute',
    width: RING_SIZE,
    height: RING_SIZE,
    borderRadius: RING_SIZE / 2,
    borderWidth: 2,
    borderColor: colors.accent,
  },
  iconCircle: {
    width: RING_SIZE,
    height: RING_SIZE,
    borderRadius: RING_SIZE / 2,
    backgroundColor: colors.bgHover,
    borderWidth: 1,
    borderColor: colors.border,
    alignItems: 'center',
    justifyContent: 'center',
  },
  badge: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: spacing[2],
    backgroundColor: colors.bgHover,
    paddingHorizontal: spacing[3],
    paddingVertical: spacing[1],
    borderRadius: radius.full,
    borderWidth: 1,
    borderColor: colors.border,
  },
  badgeDot: {
    width: 7,
    height: 7,
    borderRadius: 4,
    backgroundColor: colors.stockOk,
  },
  badgeText: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.xs,
    fontWeight: typography.fontWeight.semibold,
    color: colors.textSecondary,
    letterSpacing: 0.8,
  },
  title: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.xl,
    fontWeight: typography.fontWeight.semibold,
    color: colors.textPrimary,
    textAlign: 'center',
  },
  subtitle: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.sm,
    color: colors.textSecondary,
    textAlign: 'center',
    lineHeight: 20,
  },
  cancelBtn: {
    marginTop: spacing[2],
    backgroundColor: colors.bgHover,
    borderRadius: radius.md,
    paddingVertical: spacing[4],
    width: '100%',
    alignItems: 'center',
    borderWidth: 1,
    borderColor: colors.border,
  },
  cancelText: {
    fontFamily: typography.fontFamily.ui,
    fontSize: typography.fontSize.base,
    color: colors.textPrimary,
  },
});