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interaktive-systeme/app/(tabs)/(budget)/index.tsx
2024-01-25 16:42:43 +01:00

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TypeScript

import AsyncStorage from '@react-native-async-storage/async-storage';
import { router, useNavigation } from 'expo-router';
import React, { useEffect, useMemo, useState } from 'react';
import { StyleSheet, View } from 'react-native';
import { FlatList } from 'react-native-gesture-handler';
import { SafeAreaView } from 'react-native-safe-area-context';
import { BudgetHeader, CategoryItem, LoadingSymbol, Plus, TextInputBar } from '../../../components';
import useFetch from '../../../hooks/useFetch';
import { useTheme } from '../../contexts/ThemeContext';
import { useFocusEffect } from 'expo-router/src/useFocusEffect';
export default function Page() {
const {colors} = useTheme()
const containerColor = colors.containerColor;
const navigation = useNavigation();
const [selectedPage, setSelectedPage] = useState("noPageLoaded");
const [searchString, setSearchString] = useState("");
useEffect(() => {
console.log("initial effect called")
AsyncStorage.getItem("currentBudgetPage").then((page) => {
if(page === "expenses" || page === "savings") {
setSelectedPage(page);
}
}).catch((error) => {
console.log("Error fetching previous page from Async Storage:", error);
})
}, []);
const {data, isLoading, reFetch} = useFetch({sql: "SELECT c.guid AS category_guid, c.name AS category_name, c.color AS category_color, c.type AS category_type, SUM(e.amount) as total_expenses, c.allocated_amount as allocated_amount FROM category c LEFT JOIN expense e ON e.category_guid = c.guid WHERE c.type = ? GROUP BY c.guid", args: selectedPage === "expenses" ? ["expense"] : selectedPage === "savings" ? ["saving"] : []});
useEffect(() => {
reFetch()
}, [selectedPage]);
useEffect(() => {
const unsubscribe = navigation.addListener("focus", () => {
reFetch();
})
return unsubscribe;
}, [navigation])
const handlePageSelection = (page: string) => {
if(page !== selectedPage) {
setSelectedPage(page);
AsyncStorage.setItem("currentBudgetPage", page);
}
};
const handleCategoryPress = (item: {[column: string]: any;}) => {
router.push({pathname: "/category", params: {category_guid: item.category_guid, category_name: item.category_name}})
}
const filteredData = useMemo(() => {
return data.filter((item) => {
return item.category_name.toLowerCase().includes(searchString.toLowerCase());
})
}, [data, searchString]);
return (
<SafeAreaView style={[styles.safeAreaViewStyle, {backgroundColor: containerColor}]}>
<View style={{flex: 1, marginHorizontal: 10}}>
<BudgetHeader selectedPage={selectedPage} handlePageSelection={handlePageSelection}/>
<TextInputBar style={{marginBottom: 20}} value={searchString} onChangeText={setSearchString} placeholder='Search...'></TextInputBar>
<Plus onPress={() => {
router.push({pathname: '/addCategory'});
}}/>
{isLoading ? (<LoadingSymbol/>) : (
<FlatList
data={filteredData}
renderItem = {({item}) => <CategoryItem
category={item.category_name}
allocated_amount={item.allocated_amount ?? 0}
color={item.category_color}
category_guid={item.category_guid}
total_expenses={item.total_expenses ?? 0}
onPress={() => {
handleCategoryPress(item);
}}/>}
keyExtractor={item => item.category_guid}
ItemSeparatorComponent={() => {
return (<View style={styles.itemSeperatorStyle}/>);
}}
/>
)}
</View>
</SafeAreaView>
);
}
const styles = StyleSheet.create({
safeAreaViewStyle: {
flex: 1,
},
itemSeperatorStyle: {
marginVertical: 5,
},
});