Database.js

import AsyncStorage from "@react-native-async-storage/async-storage";

async function saveItem(listItem, id) {
	listItem.id = id ? id : new Date().getTime();
	const savedItems = await getItems();

	if (id) {
		const index = await savedItems.findIndex((item) => item.id === id);
		savedItems[index] = listItem;
	} else savedItems.push(listItem);

	return AsyncStorage.setItem("items", JSON.stringify(savedItems));
}

function getItems() {
	return AsyncStorage.getItem("items").then((response) => {
		if (response) return Promise.resolve(JSON.parse(response));
		else return Promise.resolve([]);
	});
}

async function getItem(id) {
	const savedItems = await getItems();
	return savedItems.find((item) => item.id === id);
}

async function deleteItem(id) {
	let savedItems = await getItems();
	const index = await savedItems.findIndex((item) => item.id === id);
	savedItems.splice(index, 1);
	return AsyncStorage.setItem("items", JSON.stringify(savedItems));
}

export default { saveItem, getItems, getItem, deleteItem };