RanchiMall/exchangemarket
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checkSellRequirement: sell-chip's base

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- Check for sell-chips's base price when placing sell order.
- Returns 'Cannot sell below purchased price' when not enough sell-chips above the base for placing order
This commit is contained in:
sairajzero 2022-05-07 01:04:49 +05:30
parent fb9ac8080b
commit d444e96259
1 changed files with 19 additions and 5 deletions
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24
src/market.js
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@ -133,7 +133,7 @@ function addSellOrder(floID, asset, quantity, min_price) {
else if (!assetList.includes(asset)) else if (!assetList.includes(asset))
return reject(INVALID(`Invalid asset (${asset})`)); return reject(INVALID(`Invalid asset (${asset})`));
getAssetBalance.check(floID, asset, quantity).then(_ => { getAssetBalance.check(floID, asset, quantity).then(_ => {
checkSellRequirement(floID, asset, quantity).then(_ => { checkSellRequirement(floID, asset, quantity, min_price).then(_ => {
DB.query("INSERT INTO SellOrder(floID, asset, quantity, minPrice) VALUES (?, ?, ?, ?)", [floID, asset, quantity, min_price]).then(result => { DB.query("INSERT INTO SellOrder(floID, asset, quantity, minPrice) VALUES (?, ?, ?, ?)", [floID, asset, quantity, min_price]).then(result => {
resolve('Sell Order placed successfully'); resolve('Sell Order placed successfully');
coupling.initiate(asset); coupling.initiate(asset);
@ -143,17 +143,31 @@ function addSellOrder(floID, asset, quantity, min_price) {
}); });
} }
const checkSellRequirement = (floID, asset, quantity) => new Promise((resolve, reject) => { const checkSellRequirement = (floID, asset, quantity, min_price) => new Promise((resolve, reject) => {
Promise.all([ Promise.all([
DB.query("SELECT IFNULL(SUM(quantity), 0) AS total_chips FROM SellChips WHERE floID=? AND asset=?", [floID, asset]), DB.query("SELECT IFNULL(SUM(quantity), 0) AS total_chips FROM SellChips WHERE floID=? AND asset=?", [floID, asset]),
DB.query("SELECT IFNULL(SUM(quantity), 0) AS locked FROM SellOrder WHERE floID=? AND asset=?", [floID, asset]) DB.query("SELECT IFNULL(SUM(quantity), 0) AS locked FROM SellOrder WHERE floID=? AND asset=?", [floID, asset])
]).then(result => { ]).then(result => {
let total = result[0][0].total_chips, let total = result[0][0].total_chips,
locked = result[1][0].locked; locked = result[1][0].locked;
if (total >= locked + quantity) if (total < locked + quantity)
resolve(true);
else
reject(INVALID(`Insufficient sell-chips for ${asset}`)); reject(INVALID(`Insufficient sell-chips for ${asset}`));
else Promise.all([
DB.query("SELECT IFNULL(SUM(quantity), 0) AS total_chips FROM SellChips WHERE floID=? AND asset=? AND base>=?", [floID, asset, min_price]),
DB.query("SELECT IFNULL(SUM(quantity), 0) AS locked FROM SellOrder WHERE floID=? AND asset=? AND minPrice>=?", [floID, asset, min_price])
]).then(result => {
let g_total = result[0][0].total_chips,
g_locked = result[1][0].locked;
let l_total = total - g_total,
l_locked = locked - g_locked;
var rem = g_total - g_locked;
if (l_locked > l_total)
rem -= l_locked - l_total;
if (rem < quantity)
reject(INVALID(`Cannot sell below purchased price`));
else
resolve(true);
}).catch(error => reject(error))
}).catch(error => reject(error)) }).catch(error => reject(error))
}); });