From a6077d7750c4b631c260e85bdcea20c7219f1234 Mon Sep 17 00:00:00 2001
From: Michael Fatemi <myfatemi04@gmail.com>
Date: Sat, 26 Jun 2021 20:40:00 -0400
Subject: [PATCH] add local storage/lru cache

---
 src/components/NewUI/Event.tsx       | 13 +++++---
 src/components/NewUI/localstorage.ts | 45 +++++++++++++++++++++++++++
 src/components/NewUI/wslrucache.ts   | 46 ++++++++++++++++++++++++++++
 3 files changed, 99 insertions(+), 5 deletions(-)
 create mode 100644 src/components/NewUI/localstorage.ts
 create mode 100644 src/components/NewUI/wslrucache.ts

diff --git a/src/components/NewUI/Event.tsx b/src/components/NewUI/Event.tsx
index 84a9cd4..67ad5be 100644
--- a/src/components/NewUI/Event.tsx
+++ b/src/components/NewUI/Event.tsx
@@ -1,5 +1,4 @@
 import { useState } from 'react';
-import Availability, { AvailabilityKind } from './Availability';
 import UIButton from './UIButton';
 import UIPlacesAutocomplete from './UIPlacesAutocomplete';
 import UISecondaryBox from './UISecondaryBox';
@@ -108,16 +107,20 @@ export default function Event({
 	const [rideTherePickupPlaceID, setRideTherePickupPlaceID] = useState('');
 	const [rideBackDropoffPlaceID, setRideBackDropoffPlaceID] = useState('');
 	const [confirmed, setConfirmed] = useState(false);
-	const [availability, setAvailability] =
-		useState<AvailabilityKind>('not-interested');
+	const [interested, setInterested] = useState(false);
 
 	return (
 		<UISecondaryBox>
 			<UISecondaryHeader>{name}</UISecondaryHeader>
 			<GroupName name={group} />
 			<Details {...{ startTime, endTime, formattedAddress }} />
-			<Availability selected={availability} onSelected={setAvailability} />
-			{availability === 'interested' && (
+			<UIButton
+				onClick={() => setInterested((i) => !i)}
+				style={{ backgroundColor: '#e0e0e0' }}
+			>
+				{interested ? 'Interested' : 'Not interested'}
+			</UIButton>
+			{interested && (
 				<>
 					<div
 						style={{
diff --git a/src/components/NewUI/localstorage.ts b/src/components/NewUI/localstorage.ts
new file mode 100644
index 0000000..66081b7
--- /dev/null
+++ b/src/components/NewUI/localstorage.ts
@@ -0,0 +1,45 @@
+const KEY = 'ws.addresslist';
+
+interface Address {
+	placeId: string;
+	formattedAddress: string;
+	latitude: string;
+	longitude: string;
+}
+
+type AddressBook = Map<string, Address>;
+
+function load(): AddressBook {
+	const string = localStorage.getItem(KEY);
+	if (string) {
+		const object = JSON.parse(string);
+		const map = new Map<string, Address>(Object.entries(object));
+		return map;
+	}
+	localStorage.setItem(KEY, '{}');
+	return new Map();
+}
+
+function save(map: AddressBook) {
+	const object = Object.fromEntries(map);
+	const string = JSON.stringify(object);
+	localStorage.setItem(KEY, string);
+}
+
+class LocalStorageManager {
+	private internalValue: AddressBook;
+	constructor(capacity = 5) {
+		this.internalValue = load();
+	}
+	addAddress(address: Address) {
+		this.internalValue.set(address.placeId, address);
+		save(this.internalValue);
+	}
+	getAddresses() {
+		return Object.values(this.internalValue);
+	}
+}
+
+const WheelshareLocalStorage = new LocalStorageManager();
+
+export default WheelshareLocalStorage;
diff --git a/src/components/NewUI/wslrucache.ts b/src/components/NewUI/wslrucache.ts
new file mode 100644
index 0000000..1e95e99
--- /dev/null
+++ b/src/components/NewUI/wslrucache.ts
@@ -0,0 +1,46 @@
+class LRUCache<K, V> {
+	private cap: number;
+	private map: Map<K, V>;
+	constructor(capacity: number) {
+		this.cap = capacity;
+		this.map = new Map();
+	}
+	set(key: K, value: V) {
+		this.map.delete(key);
+		this.map.set(key, value);
+
+		if (this.map.size > this.cap) {
+			const next = this.map.keys().next();
+			if (!next.done) this.map.delete(next.value);
+		}
+	}
+	get(key: K) {
+		var value = this.map.get(key);
+
+		if (value != null) {
+			this.map.delete(key);
+			this.map.set(key, value);
+		}
+
+		return value;
+	}
+	has(key: K) {
+		return this.map.has(key);
+	}
+	delete(key: K) {
+		this.map.delete(key);
+	}
+	size() {
+		return this.map.size;
+	}
+	capacity() {
+		return this.cap - this.map.size;
+	}
+	clear() {
+		this.map.clear();
+	}
+}
+
+export function create(capacity: number) {
+	return new LRUCache(capacity);
+}