Add parameterized auction half life

script/deploy/DeployPriceOracle.s.sol

@@ -21,7 +21,7 @@ contract DeployPriceOracle is Script {
         uint256 premiumStart = 500 ether;
         uint256 totalDays = 28 days;
 
-        StablePriceOracle oracle = new ExponentialPremiumPriceOracle(prices, premiumStart, totalDays);
+        StablePriceOracle oracle = new ExponentialPremiumPriceOracle(prices, premiumStart, totalDays, 1 days);
         console.log("Price Oracle deployed to:");
         console.log(address(oracle));
 

src/L2/ExponentialPremiumPriceOracle.sol

@@ -8,17 +8,29 @@ import {GRACE_PERIOD} from "src/util/Constants.sol";
 import {StablePriceOracle} from "src/L2/StablePriceOracle.sol";
 
 contract ExponentialPremiumPriceOracle is StablePriceOracle {
+    /// @dev The starting price of the dutch auction, denominated in wei.
     uint256 public immutable startPremium;
+
+    /// @dev The calculated ending value of the dutch auction, denominated in wei.
     uint256 public immutable endValue;
 
-    constructor(uint256[] memory rentPrices, uint256 startPremium_, uint256 totalDays) StablePriceOracle(rentPrices) {
+    /// @dev The half-life of the premium price decay
+    uint256 public immutable secondsInPeriod;
+
+    error InvlaidPeriod();
+
+    constructor(uint256[] memory rentPrices, uint256 startPremium_, uint256 totalDays, uint256 secondsInPeriod_)
+        StablePriceOracle(rentPrices)
+    {
+        if (secondsInPeriod_ > 1 days) revert InvlaidPeriod();
         startPremium = startPremium_;
-        endValue = startPremium >> totalDays;
+        secondsInPeriod = secondsInPeriod_;
+        endValue = startPremium >> ((totalDays * 1 days) / secondsInPeriod_);
     }
+
     /**
      * @dev Returns the pricing premium in internal base units.
      */
-
     function _premium(string memory, uint256 expires, uint256) internal view override returns (uint256) {
         expires = expires + GRACE_PERIOD;
         if (expires > block.timestamp) {
@@ -31,14 +43,12 @@ contract ExponentialPremiumPriceOracle is StablePriceOracle {
         }
         return 0;
     }
+
     /**
      * @dev Returns the premium price at current time elapsed
      * @param elapsed time past since expiry
      */
-
     function decayedPremium(uint256 elapsed) public view returns (uint256) {
-        /// @dev The half-life of the premium price decay
-        uint256 secondsInPeriod = 1 days;
         /// @dev 50% decay per period in wad format
         uint256 perPeriodDecayPercentWad = FixedPointMathLib.WAD / 2;
         uint256 premium = EDAPrice.currentPrice(startPremium, elapsed, secondsInPeriod, perPeriodDecayPercentWad);

test/ExponentialPremiumPriceOracle/ExponentialPremiumOracleBase.t.sol

@@ -17,6 +17,7 @@ contract ExponentialPremiumOracleBase is Test {
 
     uint256 startPremium = 1e18;
     uint256 totalDays = 21;
+    uint256 secondsInPeriod = 1 days;
 
     function setUp() public {
         uint256[] memory rentPrices = new uint256[](6);
@@ -35,7 +36,7 @@ contract ExponentialPremiumOracleBase is Test {
         rentPrices[4] = rent5;
         rentPrices[5] = rent10;
 
-        oracle = new ExponentialPremiumPriceOracle(rentPrices, startPremium, totalDays);
+        oracle = new ExponentialPremiumPriceOracle(rentPrices, startPremium, totalDays, secondsInPeriod);
     }
 
     function test_constructor() public view {

test/IntegrationTest.t.sol

@@ -69,7 +69,7 @@ contract IntegrationTest is Test {
         rentPrices[4] = 31_709_791;
         rentPrices[5] = 3_170_979; //3,170,979.1983764587 = 1e14 / (365 * 24 * 3600)
 
-        exponentialPremiumPriceOracle = new ExponentialPremiumPriceOracle(rentPrices, 1e18, 21);
+        exponentialPremiumPriceOracle = new ExponentialPremiumPriceOracle(rentPrices, 1e18, 21, 1 days);
         baseRegistrar = new BaseRegistrar(registry, owner, BASE_ETH_NODE);
 
         _establishNamespaces();