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ViewWallet.sol
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ViewWallet.sol
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import {IOrderBook} from "@elliottech/lighter-v2-core/contracts/interfaces/IOrderBook.sol";
/// @title ViewWallet
/// @notice A wallet that extends the Lighter protocol by providing more view methods.
contract ViewWallet {
constructor() {}
struct Order {
bool isAsk;
uint32 id;
address owner;
uint256 amount0;
uint256 price;
}
/// @notice Get the order details of all limit orders in the order book.
/// Each returned list contains the details of ask orders first, followed by bid orders
function getLimitOrders(IOrderBook orderBook) public view returns (Order[] memory) {
uint32 limit = 100;
uint32 total = 0;
// iterate once to get the total number of orders first
for (uint8 ask = 1; ; ask -= 1) {
uint32 lastId = 0;
for (bool broke = false; broke == false; ) {
IOrderBook.OrderQueryItem memory response = orderBook.getPaginatedOrders(lastId, ask == 1, limit);
for (uint32 index = 0; index < limit; index += 1) {
lastId = response.ids[index];
if (lastId == 0) {
broke = true;
break;
}
total += 1;
}
}
if (ask == 0) {
break;
}
}
Order[] memory orders = new Order[](total);
total = 0;
// iterate again and store the response where
for (uint8 ask = 1; ; ask -= 1) {
uint32 lastId = 0;
for (bool broke = false; broke == false; ) {
IOrderBook.OrderQueryItem memory response = orderBook.getPaginatedOrders(lastId, ask == 1, limit);
for (uint32 index = 0; index < limit; index += 1) {
lastId = response.ids[index];
if (lastId == 0) {
broke = true;
break;
}
orders[total] = Order({
isAsk: response.isAsk,
id: response.ids[index],
owner: response.owners[index],
amount0: response.amount0s[index],
price: response.prices[index]
});
total += 1;
}
}
if (ask == 0) {
break;
}
}
return orders;
}
/// @notice Get the order details of all limit orders in the order book.
/// Each returned list contains the details of ask orders first, followed by bid orders
function getLimitOrdersByOwner(IOrderBook orderBook, address ownerAddress) public view returns (Order[] memory) {
Order[] memory orders = getLimitOrders(orderBook);
uint32 total = 0;
for (uint256 index = 0; index < orders.length; index += 1) {
if (orders[index].owner == ownerAddress) {
total += 1;
}
}
Order[] memory filteredOrders = new Order[](total);
total = 0;
for (uint256 index = 0; index < orders.length; index += 1) {
if (orders[index].owner == ownerAddress) {
filteredOrders[total] = orders[index];
total += 1;
}
}
return filteredOrders;
}
}