From b54c6f8a2459f0a16b0c5844fe0c58d7eb347f88 Mon Sep 17 00:00:00 2001
From: David Racero <canillas.mail@gmail.com>
Date: Thu, 27 May 2021 09:17:36 +0200
Subject: [PATCH] feat: Remove WETH mention from AaveOracle. Add QUOTE_CURRENCY
 and QUOTE_CURRENCY_UNIT to determine the quote currency of the price sources

---
 contracts/misc/AaveOracle.sol | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/contracts/misc/AaveOracle.sol b/contracts/misc/AaveOracle.sol
index 0cb8e180..11a2e332 100644
--- a/contracts/misc/AaveOracle.sol
+++ b/contracts/misc/AaveOracle.sol
@@ -18,13 +18,14 @@ import {SafeERC20} from '../dependencies/openzeppelin/contracts/SafeERC20.sol';
 contract AaveOracle is IPriceOracleGetter, Ownable {
   using SafeERC20 for IERC20;
 
-  event WethSet(address indexed weth);
+  event QuoteCurrencySet(address indexed quoteCurrency, uint256 quoteUnit);
   event AssetSourceUpdated(address indexed asset, address indexed source);
   event FallbackOracleUpdated(address indexed fallbackOracle);
 
   mapping(address => IChainlinkAggregator) private assetsSources;
   IPriceOracleGetter private _fallbackOracle;
-  address public immutable WETH;
+  address public immutable QUOTE_CURRENCY;
+  uint256 public immutable QUOTE_CURRENCY_UNIT;
 
   /// @notice Constructor
   /// @param assets The addresses of the assets
@@ -35,12 +36,14 @@ contract AaveOracle is IPriceOracleGetter, Ownable {
     address[] memory assets,
     address[] memory sources,
     address fallbackOracle,
-    address weth
+    address quoteCurrency,
+    uint256 quoteCurrencyUnits
   ) public {
     _setFallbackOracle(fallbackOracle);
     _setAssetsSources(assets, sources);
-    WETH = weth;
-    emit WethSet(weth);
+    QUOTE_CURRENCY = quoteCurrency;
+    QUOTE_CURRENCY_UNIT = quoteCurrencyUnits;
+    emit QuoteCurrencySet(quoteCurrency, quoteCurrencyUnits);
   }
 
   /// @notice External function called by the Aave governance to set or replace sources of assets
@@ -83,8 +86,8 @@ contract AaveOracle is IPriceOracleGetter, Ownable {
   function getAssetPrice(address asset) public view override returns (uint256) {
     IChainlinkAggregator source = assetsSources[asset];
 
-    if (asset == WETH) {
-      return 1 ether;
+    if (asset == QUOTE_CURRENCY) {
+      return QUOTE_CURRENCY_UNIT;
     } else if (address(source) == address(0)) {
       return _fallbackOracle.getAssetPrice(asset);
     } else {