import React from 'react';
import {
  View,
  Text,
  StyleSheet,
  ScrollView,
  TouchableOpacity,
  Linking,
} from 'react-native';
import { useSafeAreaInsets } from 'react-native-safe-area-context';
import { ArrowLeft, Mail, Phone, Shield, Eye, Lock, Users, MapPin, PhoneCall, CheckCircle2 } from 'lucide-react-native';
import { useRouter } from 'expo-router';
import { withErrorBoundary } from '@/components/ErrorBoundary';

function PrivacyScreen() {
  const insets = useSafeAreaInsets();
  const router = useRouter();

  const handleContact = () => {
    Linking.openURL('mailto:geocartindia@gmail.com');
  };

  const handleCall = () => {
    Linking.openURL('tel:+917306519350');
  };

  const openWebPolicy = () => {
    Linking.openURL('https://abhiram-s2002.github.io/geomart-privacy/privacy-policy.html');
  };

  return (
    <View style={[styles.container, { paddingTop: insets.top }]}>
      <View style={styles.header}>
        <TouchableOpacity
          style={styles.backButton}
          onPress={() => { if (router.canGoBack()) { router.back(); } else { router.replace('/settings'); } }}
        >
          <ArrowLeft size={24} color="#1E293B" />
        </TouchableOpacity>
        <Text style={styles.headerTitle}>Privacy Policy</Text>
        <View style={styles.placeholder} />
      </View>

      <ScrollView style={styles.content} showsVerticalScrollIndicator={false}>
        <View style={styles.section}>
          <View style={styles.iconContainer}>
            <Shield size={24} color="#10B981" />
          </View>
          <Text style={styles.sectionTitle}>Your Privacy Matters</Text>
          <Text style={styles.paragraph}>
            At GeoCart, we are committed to protecting your privacy and ensuring the security of your personal information. This Privacy Policy explains how we collect, use, and safeguard your data.
          </Text>
          <Text style={styles.paragraph}>Last updated: March 10, 2026</Text>

          <TouchableOpacity style={styles.linkButton} onPress={openWebPolicy}>
            <Text style={styles.linkButtonText}>View Full Policy on the Web</Text>
          </TouchableOpacity>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>1. Information We Collect</Text>
          <Text style={styles.subsectionTitle}>Personal Information</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Name, username, display name</Text>
            <Text style={styles.bullet}>• Email address and phone number</Text>
            <Text style={styles.bullet}>• Profile photos, avatars, bios</Text>
            <Text style={styles.bullet}>• Verification data (phone verification, identity signals)</Text>
            <Text style={styles.bullet}>• Privacy preferences (phone sharing, location visibility)</Text>
          </View>

          <Text style={styles.subsectionTitle}>Marketplace & Requests</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Listings and requests content, images, categories</Text>
            <Text style={styles.bullet}>• Pings and messages between users</Text>
            <Text style={styles.bullet}>• Ratings, reviews, and reports</Text>
            <Text style={styles.bullet}>• Favorites, hidden items, blocked users</Text>
          </View>

          <Text style={styles.subsectionTitle}>Blood Donation Feature</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Blood type, donation history, location</Text>
            <Text style={styles.bullet}>• Blood requests (type, urgency, location)</Text>
            <Text style={styles.bullet}>• Aggregated donor statistics</Text>
          </View>

          <Text style={styles.subsectionTitle}>Usage & Device</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Device and app info (model, OS, version)</Text>
            <Text style={styles.bullet}>• Logs, errors, and performance metrics</Text>
            <Text style={styles.bullet}>• Analytics on features used and engagement</Text>
          </View>

          <Text style={styles.subsectionTitle}>Location</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Approximate or precise location (with permission)</Text>
            <Text style={styles.bullet}>• Derived distances to listings/requests</Text>
          </View>

          <Text style={styles.subsectionTitle}>Delivery & Safety</Text>
          <Text style={styles.paragraph}>
            We do not provide or guarantee delivery; delivery is arranged between users or partners. We use data to facilitate marketplace features (e.g. pings, messaging) that may be used to arrange delivery. We do not guarantee user identity, conduct, or safety. Your safety when meeting in person, transacting, or arranging delivery is your responsibility. We encourage you to follow the safety guidance in our Terms of Service.
          </Text>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>2. How We Use Your Information</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Provide and improve marketplace and request features</Text>
            <Text style={styles.bullet}>• Facilitate messaging, pings, and notifications</Text>
            <Text style={styles.bullet}>• Show nearby items using your location</Text>
            <Text style={styles.bullet}>• Implement verification and trust indicators (verification does not guarantee user identity or safety)</Text>
            <Text style={styles.bullet}>• Enforce policies by moderating usernames, listings, and requests</Text>
            <Text style={styles.bullet}>• Detect fraud, abuse, and security incidents</Text>
            <Text style={styles.bullet}>• Support marketplace features that may be used to arrange delivery (we do not provide or guarantee delivery)</Text>
            <Text style={styles.bullet}>• Measure performance and improve UX</Text>
            <Text style={styles.bullet}>• Manage OMNI rewards, achievements, leaderboards (no monetary value)</Text>
            <Text style={styles.bullet}>• Facilitate blood donation matching by connecting donors with requests</Text>
          </View>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>3. Phone Sharing & Visibility</Text>
          <View style={styles.inlineIcon}><PhoneCall size={18} color="#10B981" /><Text style={styles.inlineIconText}>Granular user control</Text></View>
          <Text style={styles.paragraph}>
            You control whether your phone number is visible to others. Phone sharing settings can be changed any time. When enabled, your phone number may be shown to buyers/sellers in relevant interactions; when disabled, it remains hidden.
          </Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Toggle in Settings → Privacy → Phone Sharing</Text>
            <Text style={styles.bullet}>• We store your preference and last-updated time</Text>
            <Text style={styles.bullet}>• We never sell your phone number</Text>
          </View>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>4. Location Sharing & Visibility</Text>
          <View style={styles.inlineIcon}><MapPin size={18} color="#10B981" /><Text style={styles.inlineIconText}>Opt-in location features</Text></View>
          <Text style={styles.paragraph}>
            Location access is optional and used to power nearby search and relevance. You can disable precise location in device settings; the app will fall back to approximate location or manual selection.
          </Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Used to sort listings/requests by distance</Text>
            <Text style={styles.bullet}>• Never shared with third parties for advertising</Text>
            <Text style={styles.bullet}>• Can be disabled at any time in system settings</Text>
          </View>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>5. Verification & Trust</Text>
          <View style={styles.inlineIcon}><CheckCircle2 size={18} color="#10B981" /><Text style={styles.inlineIconText}>Strengthening platform safety</Text></View>
          <Text style={styles.paragraph}>
            We process verification data (e.g., phone verification and identity signals) to show badges and improve trust. Your verification status may be visible on your profile and content.
          </Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Limited retention of verification records</Text>
            <Text style={styles.bullet}>• Used only for safety and Trust & Safety reviews</Text>
          </View>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>6. Information Sharing</Text>
          <Text style={styles.paragraph}>We do not sell personal data. We may share limited data:</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• With other users as part of marketplace functionality</Text>
            <Text style={styles.bullet}>• With service providers (Supabase, Sentry, Analytics, Maps)</Text>
            <Text style={styles.bullet}>• When required by law or to enforce policies</Text>
          </View>
        </View>

        <View style={styles.section}>
          <View style={styles.iconContainer}>
            <Lock size={24} color="#10B981" />
          </View>
          <Text style={styles.sectionTitle}>7. Security</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Encryption in transit and at rest</Text>
            <Text style={styles.bullet}>• RLS policies to isolate user data</Text>
            <Text style={styles.bullet}>• Access controls and audit logging</Text>
            <Text style={styles.bullet}>• Regular reviews and updates</Text>
          </View>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>8. Retention</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Account data: until deletion</Text>
            <Text style={styles.bullet}>• Communications: while account is active</Text>
            <Text style={styles.bullet}>• Verification: typically up to 3 years</Text>
            <Text style={styles.bullet}>• Analytics logs: time-limited and aggregated</Text>
          </View>
        </View>

        <View style={styles.section}>
          <View style={styles.iconContainer}>
            <Eye size={24} color="#10B981" />
          </View>
          <Text style={styles.sectionTitle}>9. Your Rights</Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Access, rectify, delete, export your data</Text>
            <Text style={styles.bullet}>• Withdraw consent and manage preferences</Text>
            <Text style={styles.bullet}>• Request updates to non-compliant identifiers (including usernames)</Text>
          </View>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>10. Blood Donation Feature</Text>
          <Text style={styles.paragraph}>
            The blood donation feature collects blood type, donation history, location, and contact information to facilitate matching between donors and requests.
          </Text>
          <View style={styles.bulletList}>
            <Text style={styles.bullet}>• Donor profiles are visible to users searching for blood</Text>
            <Text style={styles.bullet}>• Blood requests are matched with nearby donors</Text>
            <Text style={styles.bullet}>• Location data helps calculate distances</Text>
          </View>
          <View style={styles.disclaimerBox}>
            <Text style={styles.disclaimerText}>
              Important: GeoCart is NOT a medical service or healthcare provider. We do not verify medical information, provide medical advice, or guarantee matches. Users must consult qualified medical professionals before donating or receiving blood. We are not liable for any medical outcomes. We do not provide or guarantee delivery; delivery is arranged between users or partners. User safety (including in-person meetings, transactions, and delivery) is your responsibility; we do not guarantee the conduct, identity, or safety of any user. See our Terms of Service for delivery information and safety guidance.
            </Text>
          </View>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>11. Children&apos;s Privacy</Text>
          <Text style={styles.paragraph}>Not for children under 13. If collected inadvertently, we will delete.</Text>
        </View>

        <View style={styles.section}>
          <Text style={styles.sectionTitle}>12. Changes to This Policy</Text>
          <Text style={styles.paragraph}>We will notify you of material changes in-app or by email. Continued use means acceptance.</Text>
        </View>

        <View style={styles.section}>
          <View style={styles.iconContainer}>
            <Users size={24} color="#10B981" />
          </View>
          <Text style={styles.sectionTitle}>Contact Us</Text>
          <Text style={styles.paragraph}>Questions or privacy requests:</Text>
          <TouchableOpacity style={styles.contactItem} onPress={handleContact}>
            <Mail size={16} color="#10B981" />
            <Text style={styles.contactText}>geocartindia@gmail.com</Text>
          </TouchableOpacity>
          <TouchableOpacity style={styles.contactItem} onPress={handleCall}>
            <Phone size={16} color="#10B981" />
            <Text style={styles.contactText}>+91 7306 51 9350</Text>
          </TouchableOpacity>
          <Text style={styles.paragraph}>Address: Kozhikode, Kerala, India</Text>
        </View>

        <View style={styles.footer}>
          <Text style={styles.footerText}>© {new Date().getFullYear()} GeoCart. All rights reserved.</Text>
        </View>
      </ScrollView>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#F8FAFC',
  },
  header: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'space-between',
    paddingHorizontal: 16,
    paddingVertical: 12,
    backgroundColor: '#FFFFFF',
    borderBottomWidth: 1,
    borderBottomColor: '#E2E8F0',
  },
  backButton: {
    padding: 4,
  },
  headerTitle: {
    fontSize: 20,
    fontFamily: 'Inter-Bold',
    color: '#1E293B',
  },
  placeholder: {
    width: 32,
  },
  content: {
    flex: 1,
    paddingHorizontal: 16,
  },
  section: {
    backgroundColor: '#FFFFFF',
    marginVertical: 8,
    padding: 16,
    borderRadius: 12,
    shadowColor: '#000',
    shadowOffset: { width: 0, height: 2 },
    shadowOpacity: 0.1,
    shadowRadius: 8,
    elevation: 4,
  },
  iconContainer: {
    alignItems: 'center',
    marginBottom: 12,
  },
  sectionTitle: {
    fontSize: 18,
    fontFamily: 'Inter-SemiBold',
    color: '#1E293B',
    marginBottom: 12,
  },
  subsectionTitle: {
    fontSize: 16,
    fontFamily: 'Inter-Medium',
    color: '#1E293B',
    marginTop: 16,
    marginBottom: 8,
  },
  paragraph: {
    fontSize: 14,
    fontFamily: 'Inter-Regular',
    color: '#475569',
    lineHeight: 20,
    marginBottom: 12,
  },
  bulletList: {
    marginLeft: 8,
    marginBottom: 12,
  },
  bullet: {
    fontSize: 14,
    fontFamily: 'Inter-Regular',
    color: '#475569',
    lineHeight: 20,
    marginBottom: 4,
  },
  contactItem: {
    flexDirection: 'row',
    alignItems: 'center',
    marginBottom: 8,
    gap: 8,
  },
  contactText: {
    fontSize: 14,
    fontFamily: 'Inter-Regular',
    color: '#475569',
  },
  inlineIcon: {
    flexDirection: 'row',
    alignItems: 'center',
    gap: 8,
    marginBottom: 8,
  },
  inlineIconText: {
    fontSize: 13,
    color: '#0F766E',
  },
  linkButton: {
    marginTop: 8,
    alignSelf: 'flex-start',
    backgroundColor: '#ECFDF5',
    borderRadius: 8,
    paddingHorizontal: 12,
    paddingVertical: 8,
  },
  linkButtonText: {
    color: '#059669',
    fontFamily: 'Inter-Medium',
  },
  footer: {
    alignItems: 'center',
    paddingVertical: 24,
  },
  footerText: {
    fontSize: 12,
    fontFamily: 'Inter-Regular',
    color: '#94A3B8',
  },
  disclaimerBox: {
    backgroundColor: '#FEF3C7',
    borderLeftWidth: 4,
    borderLeftColor: '#F59E0B',
    padding: 12,
    marginTop: 12,
    borderRadius: 4,
  },
  disclaimerText: {
    fontSize: 13,
    fontFamily: 'Inter-Medium',
    color: '#92400E',
    lineHeight: 18,
  },
});

export default withErrorBoundary(PrivacyScreen);