From cd9748e59f1dd9ef31afb22195b8d5a1346ec5c3 Mon Sep 17 00:00:00 2001
From: mat <github@matdoes.dev>
Date: Mon, 16 May 2022 00:09:44 -0500
Subject: start adding auctionprices page

---
 src/lib/APITypes.d.ts                  | 19 +++++++++++++
 src/lib/AuctionPriceScatterplot.svelte | 49 ++++++++++++++++++++++++++++++++++
 2 files changed, 68 insertions(+)
 create mode 100644 src/lib/AuctionPriceScatterplot.svelte

(limited to 'src/lib')

diff --git a/src/lib/APITypes.d.ts b/src/lib/APITypes.d.ts
index 6402721..6429e8b 100644
--- a/src/lib/APITypes.d.ts
+++ b/src/lib/APITypes.d.ts
@@ -434,3 +434,22 @@ export interface AccessoryBagUpgrades {
 		list: string[]
 	}
 }
+
+export interface SimpleAuctionSchema {
+	/** The UUID of the auction so we can look it up later. */
+	id: string
+	coins: number
+	/**
+	 * The timestamp as **seconds** since epoch. It's in seconds instead of ms
+	 * since we don't need to be super exact and so it's shorter.
+	 */
+	ts: number
+	/** Whether the auction was bought or simply expired. */
+	success: boolean
+	bin: boolean
+}
+export interface ItemAuctionsSchema {
+	/** The id of the item */
+	_id: string
+	auctions: SimpleAuctionSchema[]
+}
diff --git a/src/lib/AuctionPriceScatterplot.svelte b/src/lib/AuctionPriceScatterplot.svelte
new file mode 100644
index 0000000..f887725
--- /dev/null
+++ b/src/lib/AuctionPriceScatterplot.svelte
@@ -0,0 +1,49 @@
+<script lang="ts">
+	import type { ItemAuctionsSchema } from './APITypes'
+
+	export let item: ItemAuctionsSchema
+
+	let maxCoins: number = item.auctions.reduce((max, auction) => Math.max(max, auction.coins), 0)
+
+	let currentTimestamp = Math.floor(Date.now() / 1000)
+
+	let lowestCoinsAuction = item.auctions.reduce(
+		(min, auction) => (auction.coins < min.coins ? auction : min),
+		{ coins: Infinity, ts: currentTimestamp }
+	)
+
+	let earliestTimestamp = item.auctions.length > 0 ? item.auctions[0].ts : 0
+
+	let minutesBetween = (currentTimestamp - earliestTimestamp) / 360
+
+	let gridWidth = 100 / minutesBetween
+</script>
+
+<svg viewBox="0 0 100 100" class="item-auction-history">
+	<defs>
+		<pattern id="grid-{item._id}" width={gridWidth} height="10" patternUnits="userSpaceOnUse">
+			<path d="M {gridWidth} 0 L 0 0 0 10" fill="none" stroke="#fff2" stroke-width="1" />
+		</pattern>
+	</defs>
+	<rect width="100%" height="100%" fill="url(#grid-{item._id})" />
+
+	{#each item.auctions as auction}
+		{@const timestampPercentage =
+			(auction.ts - earliestTimestamp) / (currentTimestamp - earliestTimestamp)}
+		<circle
+			cx={timestampPercentage * 100}
+			cy={100 - (auction.coins / maxCoins) * 100}
+			r="1"
+			stroke-width="4"
+			fill={auction.bin ? '#11b' : '#1b1'}
+		/>
+	{/each}
+	<!-- {item.auctions} -->
+</svg>
+
+<style>
+	.item-auction-history {
+		height: 10em;
+		width: 100%;
+	}
+</style>
-- 
cgit