import {View, Text, TouchableOpacity, StyleSheet, TextInput, ScrollView, Alert} from "react-native";
import useCreateOrderStore from "../../store/createOrder";
import BackIcon from "../../components/BackIcon";
import { useNavigation, useRoute, RouteProp } from "@react-navigation/native";
import { NativeStackNavigationProp } from "@react-navigation/native-stack";
import { useState, useEffect } from "react";
import useUserStore from "../../store/user";
import {
 Order
} from "../../services/api/orders";
import { payApi } from "../../services/api/payApi";


// Define the param list for navigation
type RootStackParamList = {
  PreviewOrder: { data: Order, payMethod: string ,currency:string,amount:number};
  Pay: { payUrl:string };
};

export const PreviewOrder = () => {
    const {orderData, setOrderData} = useCreateOrderStore();
    const navigation = useNavigation<NativeStackNavigationProp<RootStackParamList>>();
    const [phoneNumber, setPhoneNumber] = useState("");
    const [showPhoneInput, setShowPhoneInput] = useState(false);
    const route = useRoute<RouteProp<RootStackParamList, 'PreviewOrder'>>();
    const [loading, setLoading] = useState(false);
    const {user} = useUserStore();

    useEffect(() => {
        if (!user.user_id){
          return Alert.alert('检查您未登录')
        }
        if (route.params.payMethod === "Brainnel Pay(Mobile Money)") {
            setShowPhoneInput(true);
        } else {
            setShowPhoneInput(false);
        }
    }, [route.params.payMethod, user.user_id]);

    const handleSubmit = () => {
        if (showPhoneInput && !phoneNumber) {
            // Show error or alert if needed
            console.log("Phone number is required for Mobile Money");
            return;
        }

        console.log(route.params.currency);

        const data = {
          order_id: route.params.data.order_id,
          method: route.params.payMethod,
          currency: route.params.currency || route.params.data.currency,
          amount: route.params.data.actual_amount,
        }
        setLoading(true);

        payApi.getPayInfo(data).then((res) => {
          if(res.success){``
            navigation.navigate('Pay', {
              payUrl:res.payment_url
            })
          }
        }).catch((err) => {
          setLoading(false);
          Alert.alert('支付失败')
        }).finally(() => {
          setLoading(false);
        })
        
      // navigation.navigate('Pay', {
      //   orderId: user.user_id,
      //   payMethod: route.params.payMethod,

      // })
    }
    
  return (
    <View style={styles.container}>
        <View style={styles.titleContainer}>
          <View style={styles.backIconContainer}>
            <TouchableOpacity onPress={() => navigation.goBack()}>
              <BackIcon size={20} />
            </TouchableOpacity>
          </View>

          <Text style={styles.titleHeading}>立即支付</Text>
        </View>

        <ScrollView style={styles.scrollContainer}>
          <View style={styles.mainContent}>
            {/* Payment Method Section */}
            <View style={styles.section}>
              <Text style={styles.sectionTitle}>支付方式</Text>
              <View style={styles.paymentMethodContainer}>
                <Text style={styles.paymentMethodText}>{route.params.payMethod}</Text>
              </View>

              {showPhoneInput && (
                <View style={styles.phoneInputContainer}>
                  <Text style={styles.phoneInputLabel}>请输入手机号码</Text>
                  <TextInput
                    style={styles.phoneInput}
                    value={phoneNumber}
                    onChangeText={setPhoneNumber}
                    placeholder="输入手机号码"
                    keyboardType="phone-pad"
                  />
                </View>
              )}
            </View>

            {/* Order Info Section */}
            <View style={styles.section}>
              <Text style={styles.sectionTitle}>支付信息</Text>
              
              <View style={styles.infoRow}>
                <Text style={styles.infoLabel}>姓名</Text>
                <Text style={styles.infoValue}>{route.params?.data.receiver_name || "N/A"}</Text>
              </View>
              
              <View style={styles.infoRow}>
                <Text style={styles.infoLabel}>手机号</Text>
                <Text style={styles.infoValue}>{route.params?.data.receiver_phone || "N/A"}</Text>
              </View>
              
              {route.params.data?.whatsapp_number && (
                <View style={styles.infoRow}>
                  <Text style={styles.infoLabel}>WhatsApp</Text>
                  <Text style={styles.infoValue}>{route.params.data?.whatsapp_number}</Text>
                </View>
              )}
              
              <View style={styles.infoRow}>
                <Text style={styles.infoLabel}>国家</Text>
                <Text style={styles.infoValue}>{route.params?.data.receiver_country || "N/A"}</Text>
              </View>
              
              <View style={styles.infoRow}>
                <Text style={styles.infoLabel}>收货地址</Text>
                <Text style={styles.infoValue}>{route.params?.data.receiver_address || "N/A"}</Text>
              </View>
              
              <View style={styles.infoRow}>
                <Text style={styles.infoLabel}>订单金额</Text>
                <Text style={styles.infoValue}>
                  {route.params.data.actual_amount || "N/A"} {user.currency}
                </Text>
              </View>
              
              <View style={styles.infoRow}>
                <Text style={styles.infoLabel}>运费</Text>
                <Text style={styles.infoValue}>
                  {(route.params.data.domestic_shipping_fee + route.params.data.shipping_fee).toFixed(2) || "N/A"} {user.currency}
                </Text>
              </View>
            </View>

            {/* Order Summary Section */}
            <View style={styles.section}>
              <Text style={styles.sectionTitle}>订单总额</Text>
              <View style={styles.totalRow}>
                <Text style={styles.totalLabel}>总金额</Text>
                <Text style={styles.totalValue}>
                  {route.params.amount} {route.params.currency}
                </Text>
              </View>
            </View>
          </View>
        </ScrollView>

        <View style={styles.submitButtonContainer}>
          <TouchableOpacity
            style={[
              styles.primaryButtonStyle,
              (!showPhoneInput || (showPhoneInput && phoneNumber)) ? {} : styles.disabledButtonStyle
            ]}
            onPress={handleSubmit}
            disabled={showPhoneInput && !phoneNumber}
          >
            <Text style={styles.buttonText}>确认支付</Text>
          </TouchableOpacity>
        </View>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: "#f7f7fa",
  },
  scrollContainer: {
    flex: 1,
  },
  mainContent: {
    padding: 16,
  },
  submitButtonContainer: {
    paddingHorizontal: 16,
    paddingVertical: 20,
    backgroundColor: "white",
    borderTopWidth: 1,
    borderTopColor: "#eaeaea",
  },
  primaryButtonStyle: {
    width: "100%",
    height: 50,
    justifyContent: "center",
    alignItems: "center",
    backgroundColor: "#002fa7",
    borderRadius: 25,
    shadowColor: "#002fa7",
    shadowOffset: { width: 0, height: 3 },
    shadowOpacity: 0.2,
    shadowRadius: 5,
    elevation: 5,
  },
  buttonText: {
    color: "white",
    fontWeight: "600",
    fontSize: 16,
    fontFamily: "PingFang SC",
  },
  disabledButtonStyle: {
    backgroundColor: "#c0c0c0",
    shadowOpacity: 0,
  },
  titleContainer: {
    width: "100%",
    padding: 16,
    flexDirection: "row",
    alignItems: "center",
    justifyContent: "center",
    position: "relative",
    backgroundColor: "#fff",
    borderBottomWidth: 1,
    borderBottomColor: "#eaeaea",
  },
  backIconContainer: {
    position: "absolute",
    left: 16,
  },
  titleHeading: {
    fontWeight: "600",
    fontSize: 18,
    color: "#333",
    fontFamily: "PingFang SC",
  },
  section: {
    backgroundColor: "#fff",
    borderRadius: 12,
    padding: 16,
    marginBottom: 16,
    shadowColor: "#000",
    shadowOffset: { width: 0, height: 1 },
    shadowOpacity: 0.05,
    shadowRadius: 2,
    elevation: 2,
  },
  sectionTitle: {
    fontSize: 17,
    fontWeight: "600",
    color: "#333",
    marginBottom: 16,
    fontFamily: "PingFang SC",
  },
  paymentMethodContainer: {
    backgroundColor: "#f8f8f8",
    padding: 12,
    borderRadius: 8,
    borderLeftWidth: 4,
    borderLeftColor: "#002fa7",
  },
  paymentMethodText: {
    fontSize: 15,
    color: "#333",
    fontFamily: "PingFang SC",
  },
  phoneInputContainer: {
    marginTop: 16,
  },
  phoneInputLabel: {
    fontSize: 15,
    color: "#666",
    marginBottom: 8,
    fontFamily: "PingFang SC",
  },
  phoneInput: {
    borderWidth: 1,
    borderColor: "#ddd",
    borderRadius: 8,
    padding: 12,
    fontSize: 15,
    backgroundColor: "#fff",
    fontFamily: "PingFang SC",
  },
  infoRow: {
    flexDirection: "row",
    justifyContent: "space-between",
    paddingVertical: 12,
    borderBottomWidth: 1,
    borderBottomColor: "#f0f0f0",
  },
  infoLabel: {
    fontSize: 15,
    color: "#666",
    fontFamily: "PingFang SC",
  },
  infoValue: {
    fontSize: 15,
    color: "#333",
    textAlign: "right",
    maxWidth: "60%",
    fontFamily: "PingFang SC",

  },
  totalRow: {
    flexDirection: "row",
    justifyContent: "space-between",
    alignItems: "center",
    paddingVertical: 12,
  },
  totalLabel: {
    fontSize: 16,
    fontWeight: "600",
    color: "#333",
    fontFamily: "PingFang SC",
  },
  totalValue: {
    fontSize: 20,
    fontWeight: "700",
    color: "#002fa7",
    fontFamily: "PingFang SC",
  },
});