Workshop 2/3 Coding Assignment

src/workshop_2/IPriceOracle.sol

@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+pragma solidity ^0.8.19;
+
+interface IPriceOracle {
+    /// @notice Returns the name of the price oracle.
+    function name() external view returns (string memory);
+
+    /// @notice Returns the quote for a given amount of base asset in quote asset.
+    /// @param amount The amount of base asset.
+    /// @param base The address of the base asset.
+    /// @param quote The address of the quote asset.
+    /// @return out The quote amount in quote asset.
+    function getQuote(uint256 amount, address base, address quote) external view returns (uint256 out);
+
+    /// @notice Returns the bid and ask quotes for a given amount of base asset in quote asset.
+    /// @param amount The amount of base asset.
+    /// @param base The address of the base asset.
+    /// @param quote The address of the quote asset.
+    /// @return bidOut The bid quote amount in quote asset.
+    /// @return askOut The ask quote amount in quote asset.
+    function getQuotes(
+        uint256 amount,
+        address base,
+        address quote
+    ) external view returns (uint256 bidOut, uint256 askOut);
+
+    /// @notice Returns the tick for a given amount of base asset in quote asset.
+    /// @param amount The amount of base asset.
+    /// @param base The address of the base asset.
+    /// @param quote The address of the quote asset.
+    /// @return tick The tick value.
+    function getTick(uint256 amount, address base, address quote) external view returns (uint256 tick);
+
+    /// @notice Returns the bid and ask ticks for a given amount of base asset in quote asset.
+    /// @param amount The amount of base asset.
+    /// @param base The address of the base asset.
+    /// @param quote The address of the quote asset.
+    /// @return bidTick The bid tick value.
+    /// @return askTick The ask tick value.
+    function getTicks(
+        uint256 amount,
+        address base,
+        address quote
+    ) external view returns (uint256 bidTick, uint256 askTick);
+
+    error PO_BaseUnsupported();
+    error PO_QuoteUnsupported();
+    error PO_Overflow();
+    error PO_NoPath();
+}

src/workshop_2/IWorkshopVault.sol

@@ -26,4 +26,6 @@ interface IWorkshopVault is IVault {
     // [ASSIGNMENT] optional: integrate with an oracle of choice in checkAccountStatus() and liquidate()
     // [ASSIGNMENT] optional: implement a circuit breaker in checkVaultStatus(), may be EIP-7265 inspired
     // [ASSIGNMENT] optional: add EIP-7540 compatibility for RWAs
+    function doCheckVaultStatus(bytes memory snapshot) external;
+    function doTakeVaultSnapshot() external returns (bytes memory snapshot);
 }