ppc_amnet/amnet-native/app/card/PhyscialCardScan.tsx

import {StatusBar} from "expo-status-bar";
import {useNavigation} from "@react-navigation/native";
import {Card, Text, useTheme} from "react-native-paper";
import {useCallback, useLayoutEffect, useState} from "react";
import {Platform, TextInput, TouchableOpacity, View} from "react-native";

import RealmContext from "../../models/RealmContext";
import {useModalStyles} from "../../utils/ModalStyles";

import {AMCard} from "../../models/AMCard";
import {AMPhysicalCardData} from "../../models/AMPhysicalCardData";
import {felicaCardReadAsync, icCard0008Number, ICType} from "../../lib/iccard";

const {useRealm} = RealmContext;

export default function PhysicalCardScan() {
    const realm = useRealm();
    const theme = useTheme();
    const navigation = useNavigation();
    const modalStyles = useModalStyles();

    const [cardName, setCardName] = useState<string>('');

    const handleScan = useCallback(async () => {
        const cardInfo = await felicaCardReadAsync();

        if (!cardInfo) {
            return;
        }

        realm.write(() => {
            // check if the card has already been registered (convert a manually entered card to a physically scanned card)
            const accessCode = cardInfo.type === ICType.Amusement ? cardInfo.accessCode : icCard0008Number(cardInfo.idm);
            const cardEntity = realm.objects<AMCard>(AMCard.schema.name).find(x => x.code === accessCode) ?? realm.create<AMCard>(AMCard.schema.name, AMCard.generate(accessCode, cardName));

            // set physical card props
            cardEntity.name = cardName;
            cardEntity.added = new Date();
            cardEntity.physicalCardData ??= realm.objectForPrimaryKey<AMPhysicalCardData>(AMPhysicalCardData.schema.name, cardInfo.idm) ?? realm.create<AMPhysicalCardData>(AMPhysicalCardData.schema.name, {
                cardIDm: cardInfo.idm,
                cardType: cardInfo.type,
                cardVendor: cardInfo.type === ICType.Amusement ? cardInfo.vendor : null
            });
        });

        // dismiss the parent screen (this screen can only be accessed from modal -> stack)
        navigation.getParent()?.goBack();
    }, [realm, navigation, cardName]);

    useLayoutEffect(() => {
        const canSave = cardName.length;
        const themeOptions = canSave ? modalStyles.headerText : {color: theme.colors.outline};

        navigation.setOptions({
            headerRight: () => <TouchableOpacity disabled={!canSave} onPress={() => handleScan()}>
                <Text variant="bodyMedium" style={{...themeOptions}}>Scan</Text>
            </TouchableOpacity>
        })
    }, [navigation, modalStyles, cardName]);

    return (<>
        {Platform.OS == 'ios' && <StatusBar style="light"/>}
        <View style={modalStyles.rootLayout}>
            <Card mode="contained">
                <Card.Content>
                    <View style={modalStyles.formItemRow}>
                        <Text variant="bodyMedium" style={modalStyles.formItemName}>
                            Card Name
                        </Text>
                        <TextInput style={modalStyles.formItemInput}
                                   autoFocus
                                   numberOfLines={1}
                                   value={cardName}
                                   onChangeText={setCardName}
                                   placeholder="Primary Card"
                                   placeholderTextColor={theme.colors.outline}/>
                    </View>
                </Card.Content>
            </Card>

            <Text variant="bodyMedium" style={modalStyles.formFootnote}>
                Ensure you have either an Amusement IC or Transport card ready to scan.
                After the scan has completed, the card will be saved to your device.
            </Text>
        </View>
    </>)
}