import React, { useEffect } from 'react';
import { View, Text, ScrollView, TouchableOpacity } from 'react-native';
import Icon from 'react-native-vector-icons/Ionicons';
import { RouteProp, useRoute } from '@react-navigation/native';
import { useTheme } from '@theme';
import { useAppDispatch, useAppSelector, RootState } from '@store';
import { getCustomerDetails } from './thunk';
import { getStyles } from './customerDetails.styles';
import { CustomersStackParamList } from '../../navigation/customersStack';
import { Loader, CustomerDetailHeader } from '@components';
import {
  handleEmailPress,
  handlePhonePress,
  handleWebsitePress,
} from '@utils';


type CustomerDetailsRouteProp = RouteProp<
  CustomersStackParamList,
  'customerDetails'
>;


export const CustomerDetailsScreen = () => {
  const route = useRoute<CustomerDetailsRouteProp>();
  const dispatch = useAppDispatch();
  const { theme: colors } = useTheme();
  const styles = getStyles(colors);

  const userid = route.params?.userid || route.params?.customer?.userid;
  const initialCustomer = route.params?.customer;

  const { item: customerState, loading, error } = useAppSelector(
    (state: RootState) => state.customerDetails,
  );

  useEffect(() => {
    if (userid) {
      dispatch(getCustomerDetails({ userid }));
    }
  }, [dispatch, userid]);

  const customer = customerState || initialCustomer;

  if (loading && !customer) {
    return <Loader message="Loading customer details..." />;
  }

  if (error && !customer) {
    return (
      <View style={styles.centered}>
        <Icon name="alert-circle-outline" size={40} color="#EF4444" />
        <Text style={styles.errorText}>{error}</Text>
      </View>
    );
  }

  if (!customer) {
    return (
      <View style={styles.centered}>
        <Icon name="person-outline" size={40} color={colors.textMuted} />
        <Text style={styles.infoValue}>No customer details found.</Text>
      </View>
    );
  }

  const billingAddress = [
    customer.billing_street || customer.address,
    customer.billing_city || customer.city,
    customer.billing_state || customer.state,
    customer.billing_zip || customer.zip,
    customer.billing_country || customer.country,
  ]
    .filter(Boolean)
    .join(', ');

  const shippingAddress = [
    customer.shipping_street,
    customer.shipping_city,
    customer.shipping_state,
    customer.shipping_zip,
    customer.shipping_country,
  ]
    .filter(Boolean)
    .join(', ');

  return (
    <ScrollView style={styles.container} contentContainerStyle={styles.scrollContent}>
      {/* Top Header & Quick Actions */}
      <CustomerDetailHeader
        company={customer.company}
        fullname={customer.fullname}
        active={customer.active}
        datecreated={customer.datecreated}
      />

      {/* Contact Details */}
      <Text style={styles.sectionTitle}>Contact Details</Text>
      <View style={styles.infoCard}>
        {customer.email ? (
          <>
            <TouchableOpacity
              style={styles.infoRow}
              onPress={() => handleEmailPress(customer.email)}
              activeOpacity={0.7}>
              <View style={styles.infoIconWrap}>
                <Icon name="mail-outline" size={16} color={colors.icon} />
              </View>
              <View style={styles.infoMeta}>
                <Text style={styles.infoLabel}>Email</Text>
                <Text style={styles.infoValue}>{customer.email}</Text>
              </View>
              <View style={styles.actionIconButton}>
                <Icon name="chevron-forward" size={14} color={colors.textMuted} />
              </View>
            </TouchableOpacity>
            <View style={styles.divider} />
          </>
        ) : null}

        {customer.phonenumber ? (
          <>
            <TouchableOpacity
              style={styles.infoRow}
              onPress={() => handlePhonePress(customer.phonenumber)}
              activeOpacity={0.7}>
              <View style={styles.infoIconWrap}>
                <Icon name="call-outline" size={16} color={colors.icon} />
              </View>
              <View style={styles.infoMeta}>
                <Text style={styles.infoLabel}>Phone</Text>
                <Text style={styles.infoValue}>{customer.phonenumber}</Text>
              </View>
              <View style={styles.actionIconButton}>
                <Icon name="chevron-forward" size={14} color={colors.textMuted} />
              </View>
            </TouchableOpacity>
            <View style={styles.divider} />
          </>
        ) : null}

        {customer.website ? (
          <>
            <TouchableOpacity
              style={styles.infoRow}
              onPress={() => handleWebsitePress(customer.website)}
              activeOpacity={0.7}>
              <View style={styles.infoIconWrap}>
                <Icon name="globe-outline" size={16} color={colors.icon} />
              </View>
              <View style={styles.infoMeta}>
                <Text style={styles.infoLabel}>Website</Text>
                <Text style={styles.infoValue}>{customer.website}</Text>
              </View>
              <View style={styles.actionIconButton}>
                <Icon name="chevron-forward" size={14} color={colors.textMuted} />
              </View>
            </TouchableOpacity>
            <View style={styles.divider} />
          </>
        ) : null}

        {customer.vat ? (
          <View style={styles.infoRow}>
            <View style={styles.infoIconWrap}>
              <Icon name="receipt-outline" size={16} color={colors.icon} />
            </View>
            <View style={styles.infoMeta}>
              <Text style={styles.infoLabel}>VAT Number</Text>
              <Text style={styles.infoValue}>{customer.vat}</Text>
            </View>
          </View>
        ) : null}
      </View>

      {/* Address Information */}
      <Text style={styles.sectionTitle}>Address Information</Text>
      <View style={styles.infoCard}>
        {billingAddress ? (
          <>
            <View style={styles.infoRow}>
              <View style={styles.infoIconWrap}>
                <Icon name="location-outline" size={16} color={colors.icon} />
              </View>
              <View style={styles.infoMeta}>
                <Text style={styles.infoLabel}>Billing Address</Text>
                <Text style={styles.infoValue}>{billingAddress}</Text>
              </View>
            </View>
            {shippingAddress ? <View style={styles.divider} /> : null}
          </>
        ) : null}

        {shippingAddress ? (
          <View style={styles.infoRow}>
            <View style={styles.infoIconWrap}>
              <Icon name="navigate-outline" size={16} color={colors.icon} />
            </View>
            <View style={styles.infoMeta}>
              <Text style={styles.infoLabel}>Shipping Address</Text>
              <Text style={styles.infoValue}>{shippingAddress}</Text>
            </View>
          </View>
        ) : null}

        {!billingAddress && !shippingAddress ? (
          <Text style={styles.infoValue}>No address information provided.</Text>
        ) : null}
      </View>
    </ScrollView>
  );
};