import { Document, Page, Text, View, StyleSheet, Font } from '@react-pdf/renderer';

// Create styles
const styles = StyleSheet.create({
  page: {
    padding: 50,
    fontSize: 10,
    color: '#333',
    fontFamily: 'Helvetica',
  },
  header: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    marginBottom: 40,
  },
  companyInfo: {
    textAlign: 'right',
  },
  title: {
    fontSize: 24,
    color: '#000',
    marginBottom: 20,
  },
  section: {
    marginBottom: 20,
  },
  label: {
    fontSize: 8,
    color: '#999',
    textTransform: 'uppercase',
    marginBottom: 2,
  },
  table: {

    width: 'auto',
    borderStyle: 'solid',
    borderWidth: 1,
    borderColor: '#eee',
    borderRightWidth: 0,
    borderBottomWidth: 0,
    marginBottom: 20,
  },
  tableRow: {
    margin: 'auto',
    flexDirection: 'row',
  },
  tableCol: {
    width: '60%',
    borderStyle: 'solid',
    borderWidth: 1,
    borderColor: '#eee',
    borderLeftWidth: 0,
    borderTopWidth: 0,
    padding: 8,
  },
  tableColPrice: {
    width: '40%',
    borderStyle: 'solid',
    borderWidth: 1,
    borderColor: '#eee',
    borderLeftWidth: 0,
    borderTopWidth: 0,
    padding: 8,
    textAlign: 'right',
  },
  tableCell: {
    margin: 'auto',
    marginTop: 5,
    fontSize: 10,
  },
  total: {
    flexDirection: 'row',
    justifyContent: 'flex-end',
    marginTop: 20,
    borderTop: 1,
    borderColor: '#000',
    paddingTop: 10,
  },
  totalLabel: {
    fontSize: 14,
    fontWeight: 'bold',
  },
  footer: {
    position: 'absolute',
    bottom: 30,
    left: 50,
    right: 50,
    textAlign: 'center',
    color: '#999',
    fontSize: 8,
    borderTop: 1,
    borderColor: '#eee',
    paddingTop: 10,
  },
});

export const InvoicePDF = ({ order, orderSnapshot, customer }: any) => {
  const items = orderSnapshot?.items ?? [];
  const subtotal = orderSnapshot?.subtotal ?? 0;
  const taxAmount = orderSnapshot?.tax_amount ?? 0;
  const taxRate = orderSnapshot?.tax_rate ?? 19;
  const total = orderSnapshot?.total ?? 0;

  return (
    <Document>
      <Page size="A4" style={styles.page}>
        <View style={styles.header}>
          <View>
            <Text style={{ fontSize: 18, fontWeight: 'bold' }}>CASPOS</Text>
            <Text>Software Solutions</Text>
          </View>
          <View style={styles.companyInfo}>
            <Text>CASPOS GmbH</Text>
            <Text>Musterstraße 1</Text>
            <Text>12345 Musterstadt</Text>
            <Text>Deutschland</Text>
          </View>
        </View>

        <Text style={styles.title}>Bestellbestätigung / Rechnung</Text>

        <View style={styles.section}>
          <Text style={styles.label}>Rechnungsempfänger</Text>
          <Text>{customer.company_name}</Text>
          <Text>{customer.first_name} {customer.last_name}</Text>
          <Text>{customer.address}</Text>
          <Text>{customer.zip_code} {customer.city}</Text>
          <Text>USt-IdNr: {customer.vat_id}</Text>
        </View>

        <View style={styles.section}>
          <Text style={styles.label}>Bestelldetails</Text>
          <Text>Bestellnummer: {order.order_number || order.id}</Text>
          <Text>Datum: {new Date(order.created_at || Date.now()).toLocaleDateString('de-DE')}</Text>
        </View>

        <View style={styles.table}>
          <View style={[styles.tableRow, { backgroundColor: '#f9f9f9' }]}>
            <View style={styles.tableCol}><Text style={{ fontWeight: 'bold' }}>Beschreibung</Text></View>
            <View style={styles.tableColPrice}><Text style={{ fontWeight: 'bold' }}>Preis (netto)</Text></View>
          </View>
          
          {items.map((item: any, idx: number) => (
            <View key={idx}>
              <View style={styles.tableRow}>
                <View style={styles.tableCol}>
                  <Text style={{ fontWeight: 'bold' }}>{item.product_name} ({item.category_name})</Text>
                </View>
                <View style={styles.tableColPrice}>
                  <Text>
                    {new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(item.base_price)}
                    {' '}{item.billing_interval === 'one_time' ? 'einmalig' : 'mtl.'}
                  </Text>
                </View>
              </View>
              {item.selected_modules?.map((mod: any, mIdx: number) => {
                const qty = mod.quantity || 1;
                const price = mod.total_price ?? (mod.price * qty);
                const hasQty = qty > 1;
                return (
                  <View key={mIdx} style={styles.tableRow}>
                    <View style={[styles.tableCol, { paddingLeft: 20 }]}>
                      <Text style={{ color: '#666' }}>
                        + {mod.module_name} {hasQty ? `(x${qty})` : ''}
                      </Text>
                    </View>
                    <View style={styles.tableColPrice}>
                      <Text style={{ color: '#666' }}>
                        +{new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(price)}
                      </Text>
                    </View>
                  </View>
                );
              })}
            </View>
          ))}
        </View>

        <View style={styles.total}>
          <View style={{ width: '50%' }}>
            <View style={{ flexDirection: 'row', justifyContent: 'space-between', marginBottom: 3 }}>
              <Text>Netto-Zwischensumme:</Text>
              <Text>{new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(subtotal)}</Text>
            </View>
            <View style={{ flexDirection: 'row', justifyContent: 'space-between', marginBottom: 3 }}>
              <Text>zzgl. {taxRate}% USt:</Text>
              <Text>{new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(taxAmount)}</Text>
            </View>
            <View style={{ flexDirection: 'row', justifyContent: 'space-between', marginTop: 5, borderTopWidth: 1, borderTopColor: '#000', paddingTop: 5 }}>
              <Text style={styles.totalLabel}>Gesamtbetrag (brutto):</Text>
              <Text style={styles.totalLabel}>{new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(total)}</Text>
            </View>
          </View>
        </View>

        <View style={styles.footer}>
          <Text>Vielen Dank für Ihre Bestellung!</Text>
          <Text>Dies ist ein automatisch generiertes Dokument.</Text>
        </View>
      </Page>
    </Document>
  );
};
