add order amount value

src/server/orderBookUtils.ts

@@ -1,38 +1,70 @@
 import type { BoxDB } from '$lib/db/db';
-import { asBigInt } from '$lib/utils/helper';
+import BigNumber from 'bignumber.js';
 import { serializeBigInt } from './serializeBigInt';
+import { TOKEN } from '$lib/constants/tokens';
+import type { Amount } from '@fleet-sdk/common';
 
 export function createOrderBook(tradingPair: string, db: BoxDB) {
-    const filteredBoxRows = db.boxRows.filter(
-        (boxRow) => boxRow.parameters?.pair === tradingPair
-    );
-    const allOrders = filteredBoxRows.map((row) => {
-        return {
-            rate: row.parameters.rate, // todo rate to price conversion
-            amount: row.box.assets[0].amount,
-            side: row.parameters.side
-        };
-    });
-    const buyOrders = allOrders.filter((order) => order.side == 'buy');
-    const sellOrders = allOrders.filter(
-        (order) => order.side == 'sell'
-    );
-    const orderbook = {
-        buy: buyOrders.map((r) => {
-            return {
-                price: Number(r.rate)*10**(9-2),
-                amount: Number(r.amount)/10**9,
-                value: (Number(r.rate) * Number(r.amount)/10**(2)).toFixed(2)
-            };
-        }),
-        sell: sellOrders.map((r) => {
-            return {
-                price: Number(r.rate)*10**(9-2),
-                amount: Number(r.amount)/10**9,
-                value: (Number(r.rate) * Number(r.amount)/10**(2)).toFixed(2)
-            };
-        })
-    };
-
-    return serializeBigInt(orderbook);
+	const filteredBoxRows = db.boxRows.filter((boxRow) => boxRow.parameters?.pair === tradingPair);
+	console.log('filteredBoxRows', filteredBoxRows.length);
+	const allOrders = filteredBoxRows.map((row) => {
+		return {
+			rate: row.parameters.rate, // todo rate to price conversion
+			denom: row.parameters.denom,
+			amount: row.box.assets[0].amount,
+			side: row.parameters.side
+		};
+	});
+	//parameters.rate
+
+	const buyOrders = allOrders.filter((order) => order.side == 'buy');
+	const sellOrders = allOrders.filter((order) => order.side == 'sell');
+
+	console.log('sellOrders', sellOrders);
+	const orderbook = {
+		buy: buyOrders.map((r) => {
+			return {
+				price: Number(priceWithDenom(r.rate, r.denom)),
+				amount: Number(amountWithDecimals(r.amount)),
+				value: Number(volume(r.rate, r.denom, r.amount))
+			};
+		}),
+		sell: sellOrders.map((r) => {
+			return {
+				price: Number(priceWithDenom(r.rate, r.denom)),
+				amount: Number(amountWithDecimals(r.amount)),
+				value: Number(volume(r.rate, r.denom, r.amount))
+			};
+		})
+	};
+	console.log('orderbook');
+	console.log(orderbook);
+	return serializeBigInt(orderbook);
+}
+
+function priceWithDenom(price: bigint, denom: bigint) {
+	const real_price = BigNumber(price.toString()).dividedBy(denom.toString());
+
+	const decimalsToken = TOKEN.rsBTC.decimals;
+	const decimalsCurrency = TOKEN.sigUSD.decimals;
+
+	const bigDecimalsToken = BigNumber(10).pow(decimalsToken);
+	const bigDecimalsCurrency = BigNumber(10).pow(decimalsCurrency);
+
+	const initial_input = real_price.multipliedBy(bigDecimalsToken).dividedBy(bigDecimalsCurrency);
+	return initial_input.toString(10);
+}
+
+function amountWithDecimals(amount: Amount) {
+	const decimals = TOKEN.rsBTC.decimals;
+	return BigNumber(amount.toString()).dividedBy(BigNumber(10).pow(decimals)).toString(10);
+}
+
+function volume(price: bigint, denom: bigint, amount: Amount) {
+	const decimalsCurrency = TOKEN.sigUSD.decimals;
+	const real_price = BigNumber(price.toString()).dividedBy(denom.toString());
+	return real_price
+		.multipliedBy(amount.toString())
+		.dividedBy(BigNumber(10).pow(decimalsCurrency))
+		.toString(10);
 }