// components/ui/PinPad.tsx
import React from 'react';
import {
  View,
  Text,
  TouchableOpacity,
  StyleSheet,
  Vibration,
} from 'react-native';
import { Delete } from 'lucide-react-native';

interface PinPadProps {
  pin: string;
  onPinChange: (pin: string) => void;
  maxLength?: number;
}

const KEYS = [
  ['1', '2', '3'],
  ['4', '5', '6'],
  ['7', '8', '9'],
  ['', '0', 'del'],
];

export default function PinPad({
  pin,
  onPinChange,
  maxLength = 6,
}: PinPadProps) {
  const handleKey = (key: string) => {
    if (key === 'del') {
      onPinChange(pin.slice(0, -1));
    } else if (key !== '' && pin.length < maxLength) {
      Vibration.vibrate(30);
      onPinChange(pin + key);
    }
  };

  return (
    <View style={styles.container}>
      {/* PIN dots */}
      <View style={styles.dotsRow}>
        {Array.from({ length: maxLength }).map((_, i) => (
          <View
            key={i}
            style={[styles.dot, i < pin.length && styles.dotFilled]}
          />
        ))}
      </View>

      {/* Keypad */}
      {KEYS.map((row, ri) => (
        <View key={ri} style={styles.row}>
          {row.map((key, ki) => {
            if (key === '') {
              return <View key={ki} style={styles.keyEmpty} />;
            }
            if (key === 'del') {
              return (
                <TouchableOpacity
                  key={ki}
                  style={styles.key}
                  onPress={() => handleKey('del')}
                  activeOpacity={0.6}
                >
                  <Delete size={22} color="#E5E7EB" />
                </TouchableOpacity>
              );
            }
            return (
              <TouchableOpacity
                key={ki}
                style={styles.key}
                onPress={() => handleKey(key)}
                activeOpacity={0.6}
              >
                <Text style={styles.keyText}>{key}</Text>
              </TouchableOpacity>
            );
          })}
        </View>
      ))}
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    alignItems: 'center',
    gap: 24,
  },
  dotsRow: {
    flexDirection: 'row',
    gap: 16,
    marginBottom: 8,
  },
  dot: {
    width: 16,
    height: 16,
    borderRadius: 8,
    borderWidth: 2,
    borderColor: '#9CA3AF',
    backgroundColor: 'transparent',
  },
  dotFilled: {
    backgroundColor: '#1A6B72',
    borderColor: '#1A6B72',
  },
  row: {
    flexDirection: 'row',
    gap: 20,
  },
  key: {
    width: 72,
    height: 72,
    borderRadius: 36,
    backgroundColor: 'rgba(255,255,255,0.08)',
    justifyContent: 'center',
    alignItems: 'center',
  },
  keyEmpty: {
    width: 72,
    height: 72,
  },
  keyText: {
    fontSize: 26,
    fontWeight: '500',
    color: '#F9FAFB',
  },
});