feat: update database schema for precision + AMM behavior
This commit is contained in:
Face
parent
a278d0c6a5
commit
930d1f41d7
8 changed files with 893 additions and 108 deletions
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@ -87,23 +87,32 @@ export async function POST({ params, request }) {
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let newPrice: number;
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let totalCost: number;
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let priceImpact: number = 0;
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if (poolCoinAmount <= 0 || poolBaseCurrencyAmount <= 0) {
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throw error(400, 'Liquidity pool is not properly initialized or is empty. Trading halted.');
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}
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if (type === 'BUY') {
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// Calculate price impact for buying
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// AMM BUY: amount = dollars to spend
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const k = poolCoinAmount * poolBaseCurrencyAmount;
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const newPoolBaseCurrency = poolBaseCurrencyAmount + (amount * currentPrice);
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const newPoolBaseCurrency = poolBaseCurrencyAmount + amount;
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const newPoolCoin = k / newPoolBaseCurrency;
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const coinsBought = poolCoinAmount - newPoolCoin;
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totalCost = amount * currentPrice;
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totalCost = amount;
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newPrice = newPoolBaseCurrency / newPoolCoin;
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priceImpact = ((newPrice - currentPrice) / currentPrice) * 100;
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if (userBalance < totalCost) {
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throw error(400, `Insufficient funds. You need $${totalCost.toFixed(2)} but only have $${userBalance.toFixed(2)}`);
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throw error(400, `Insufficient funds. You need *${totalCost.toFixed(6)} BUSS but only have *${userBalance.toFixed(6)} BUSS`);
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}
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if (coinsBought <= 0) {
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throw error(400, 'Trade amount too small - would result in zero tokens');
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}
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await db.transaction(async (tx) => {
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// Update user balance
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await tx.update(user)
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.set({
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baseCurrencyBalance: (userBalance - totalCost).toString(),
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@ -111,7 +120,6 @@ export async function POST({ params, request }) {
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})
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.where(eq(user.id, userId));
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// Update user portfolio
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const [existingHolding] = await tx
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.select({ quantity: userPortfolio.quantity })
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.from(userPortfolio)
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@ -140,23 +148,20 @@ export async function POST({ params, request }) {
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});
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}
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// Record transaction
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await tx.insert(transaction).values({
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userId,
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coinId: coinData.id,
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type: 'BUY',
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quantity: coinsBought.toString(),
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pricePerCoin: currentPrice.toString(),
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pricePerCoin: (totalCost / coinsBought).toString(),
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totalBaseCurrencyAmount: totalCost.toString()
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});
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// Record price history
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await tx.insert(priceHistory).values({
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coinId: coinData.id,
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price: newPrice.toString()
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});
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// Calculate and update 24h metrics
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const metrics = await calculate24hMetrics(coinData.id, newPrice);
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await tx.update(coin)
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@ -178,11 +183,12 @@ export async function POST({ params, request }) {
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coinsBought,
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totalCost,
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newPrice,
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priceImpact,
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newBalance: userBalance - totalCost
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});
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} else {
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// SELL logic
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// AMM SELL: amount = number of coins to sell
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const [userHolding] = await db
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.select({ quantity: userPortfolio.quantity })
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.from(userPortfolio)
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@ -196,7 +202,12 @@ export async function POST({ params, request }) {
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throw error(400, `Insufficient coins. You have ${userHolding ? Number(userHolding.quantity) : 0} but trying to sell ${amount}`);
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}
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// Calculate price impact for selling
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// Allow more aggressive selling for rug pull simulation - prevent only mathematical breakdown
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const maxSellable = Math.floor(poolCoinAmount * 0.995); // 99.5% instead of 99%
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if (amount > maxSellable) {
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throw error(400, `Cannot sell more than 99.5% of pool tokens. Max sellable: ${maxSellable} tokens`);
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}
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const k = poolCoinAmount * poolBaseCurrencyAmount;
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const newPoolCoin = poolCoinAmount + amount;
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const newPoolBaseCurrency = k / newPoolCoin;
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@ -204,10 +215,18 @@ export async function POST({ params, request }) {
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totalCost = baseCurrencyReceived;
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newPrice = newPoolBaseCurrency / newPoolCoin;
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priceImpact = ((newPrice - currentPrice) / currentPrice) * 100;
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// Lower minimum liquidity for more dramatic crashes
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if (newPoolBaseCurrency < 10) {
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throw error(400, `Trade would drain pool below minimum liquidity (*10 BUSS). Try selling fewer tokens.`);
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}
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if (totalCost <= 0) {
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throw error(400, 'Trade amount results in zero base currency received');
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}
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// Execute sell transaction
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await db.transaction(async (tx) => {
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// Update user balance
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await tx.update(user)
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.set({
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baseCurrencyBalance: (userBalance + totalCost).toString(),
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@ -215,9 +234,8 @@ export async function POST({ params, request }) {
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})
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.where(eq(user.id, userId));
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// Update user portfolio
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const newQuantity = Number(userHolding.quantity) - amount;
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if (newQuantity > 0) {
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if (newQuantity > 0.000001) {
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await tx.update(userPortfolio)
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.set({
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quantity: newQuantity.toString(),
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@ -235,23 +253,20 @@ export async function POST({ params, request }) {
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));
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}
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// Record transaction
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await tx.insert(transaction).values({
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userId,
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coinId: coinData.id,
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type: 'SELL',
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quantity: amount.toString(),
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pricePerCoin: currentPrice.toString(),
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pricePerCoin: (totalCost / amount).toString(),
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totalBaseCurrencyAmount: totalCost.toString()
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});
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// Record price history
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await tx.insert(priceHistory).values({
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coinId: coinData.id,
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price: newPrice.toString()
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});
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// Calculate and update 24h metrics - SINGLE coin table update
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const metrics = await calculate24hMetrics(coinData.id, newPrice);
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await tx.update(coin)
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@ -273,6 +288,7 @@ export async function POST({ params, request }) {
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coinsSold: amount,
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totalReceived: totalCost,
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newPrice,
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priceImpact,
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newBalance: userBalance + totalCost
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});
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}
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@ -115,25 +115,12 @@ export async function POST({ request }) {
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createdCoin = newCoin;
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await tx.insert(userPortfolio).values({
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userId,
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coinId: newCoin.id,
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quantity: FIXED_SUPPLY.toString()
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});
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await tx.insert(priceHistory).values({
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coinId: newCoin.id,
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price: STARTING_PRICE.toString()
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});
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await tx.insert(transaction).values({
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userId,
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coinId: newCoin.id,
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type: 'BUY',
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quantity: FIXED_SUPPLY.toString(),
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pricePerCoin: STARTING_PRICE.toString(),
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totalBaseCurrencyAmount: (FIXED_SUPPLY * STARTING_PRICE).toString()
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});
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});
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return json({
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@ -147,6 +134,7 @@ export async function POST({ request }) {
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feePaid: CREATION_FEE,
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liquidityDeposited: INITIAL_LIQUIDITY,
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initialPrice: STARTING_PRICE,
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supply: FIXED_SUPPLY
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supply: FIXED_SUPPLY,
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message: "Coin created! All tokens are in the liquidity pool. Buy some if you want to hold them."
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});
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}
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@ -112,7 +112,7 @@
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function generateVolumeData(candlestickData: any[], volumeData: any[]) {
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return candlestickData.map((candle, index) => {
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// Find corresponding volume data for this time period
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const volumePoint = volumeData.find(v => v.time === candle.time);
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const volumePoint = volumeData.find((v) => v.time === candle.time);
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const volume = volumePoint ? volumePoint.volume : 0;
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return {
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@ -179,10 +179,14 @@
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priceFormat: { type: 'price', precision: 8, minMove: 0.00000001 }
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});
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const volumeSeries = chart.addSeries(HistogramSeries, {
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priceFormat: { type: 'volume' },
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priceScaleId: 'volume'
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}, 1);
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const volumeSeries = chart.addSeries(
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HistogramSeries,
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{
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priceFormat: { type: 'volume' },
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priceScaleId: 'volume'
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},
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1
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);
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const processedChartData = chartData.map((candle) => {
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if (candle.open === candle.close) {
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@ -224,7 +228,9 @@
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});
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function formatPrice(price: number): string {
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if (price < 0.01) {
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if (price < 0.000001) {
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return price.toFixed(8);
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} else if (price < 0.01) {
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return price.toFixed(6);
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} else if (price < 1) {
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return price.toFixed(4);
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@ -234,17 +240,21 @@
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}
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function formatMarketCap(value: number): string {
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if (value >= 1e9) return `$${(value / 1e9).toFixed(2)}B`;
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if (value >= 1e6) return `$${(value / 1e6).toFixed(2)}M`;
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if (value >= 1e3) return `$${(value / 1e3).toFixed(2)}K`;
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return `$${value.toFixed(2)}`;
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const num = Number(value);
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if (isNaN(num)) return '$0.00';
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if (num >= 1e9) return `$${(num / 1e9).toFixed(2)}B`;
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if (num >= 1e6) return `$${(num / 1e6).toFixed(2)}M`;
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if (num >= 1e3) return `$${(num / 1e3).toFixed(2)}K`;
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return `$${num.toFixed(2)}`;
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}
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function formatSupply(value: number): string {
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if (value >= 1e9) return `${(value / 1e9).toFixed(2)}B`;
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if (value >= 1e6) return `${(value / 1e6).toFixed(2)}M`;
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if (value >= 1e3) return `${(value / 1e3).toFixed(2)}K`;
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return value.toLocaleString();
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const num = Number(value);
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if (isNaN(num)) return '0';
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if (num >= 1e9) return `${(num / 1e9).toFixed(2)}B`;
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if (num >= 1e6) return `${(num / 1e6).toFixed(2)}M`;
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if (num >= 1e3) return `${(num / 1e3).toFixed(2)}K`;
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return num.toLocaleString();
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}
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</script>
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@ -314,7 +324,7 @@
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<TrendingDown class="h-4 w-4 text-red-500" />
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{/if}
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<Badge variant={coin.change24h >= 0 ? 'success' : 'destructive'}>
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{coin.change24h >= 0 ? '+' : ''}{coin.change24h.toFixed(2)}%
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{coin.change24h >= 0 ? '+' : ''}{Number(coin.change24h).toFixed(2)}%
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</Badge>
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</div>
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</div>
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@ -327,7 +337,7 @@
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<HoverCard.Root>
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<HoverCard.Trigger
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class="flex cursor-pointer items-center gap-2 rounded-sm underline-offset-4 hover:underline focus-visible:outline-2 focus-visible:outline-offset-8"
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class="flex cursor-pointer items-center gap-1 rounded-sm underline-offset-4 hover:underline focus-visible:outline-2 focus-visible:outline-offset-8"
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onclick={() => goto(`/user/${coin.creatorId}`)}
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>
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<Avatar.Root class="h-4 w-4">
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@ -411,7 +421,7 @@
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<Card.Title>Trade {coin.symbol}</Card.Title>
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{#if userHolding > 0}
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<p class="text-muted-foreground text-sm">
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You own: {userHolding.toFixed(2)}
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You own: {formatSupply(userHolding)}
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{coin.symbol}
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</p>
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{/if}
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@ -465,9 +475,9 @@
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</div>
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<div class="flex justify-between">
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<span class="text-muted-foreground text-sm">Base Currency:</span>
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<span class="font-mono text-sm"
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>${coin.poolBaseCurrencyAmount.toLocaleString()}</span
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>
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<span class="font-mono text-sm">
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${Number(coin.poolBaseCurrencyAmount).toLocaleString()}
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</span>
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</div>
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</div>
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</div>
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@ -476,13 +486,13 @@
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<div class="space-y-2">
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<div class="flex justify-between">
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<span class="text-muted-foreground text-sm">Total Liquidity:</span>
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<span class="font-mono text-sm"
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>${(coin.poolBaseCurrencyAmount * 2).toLocaleString()}</span
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>
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<span class="font-mono text-sm">
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${(Number(coin.poolBaseCurrencyAmount) * 2).toLocaleString()}
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</span>
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</div>
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<div class="flex justify-between">
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<span class="text-muted-foreground text-sm">Price Impact:</span>
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<Badge variant="success" class="text-xs">Low</Badge>
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<span class="text-muted-foreground text-sm">Current Price:</span>
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<span class="font-mono text-sm">${formatPrice(coin.currentPrice)}</span>
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</div>
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</div>
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</div>
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@ -549,7 +559,7 @@
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<TrendingDown class="h-4 w-4 text-red-500" />
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{/if}
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<Badge variant={coin.change24h >= 0 ? 'success' : 'destructive'} class="text-sm">
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{coin.change24h >= 0 ? '+' : ''}{coin.change24h.toFixed(2)}%
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{coin.change24h >= 0 ? '+' : ''}{Number(coin.change24h).toFixed(2)}%
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</Badge>
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</div>
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</Card.Content>
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