feat: $cCOP launch deployment scripts (#226)

script/upgrades/cCOP/Config.sol

@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// solhint-disable func-name-mixedcase, contract-name-camelcase, function-max-lines, var-name-mixedcase
+pragma solidity ^0.5.13;
+pragma experimental ABIEncoderV2;
+
+import { Chain } from "script/utils/Chain.sol";
+import { Config } from "script/utils/Config.sol";
+import { Contracts } from "script/utils/Contracts.sol";
+import { FixidityLib } from "script/utils/FixidityLib.sol";
+
+/**
+ * @dev This library contains the configuration required for the cCOP governance proposal.
+ *      The following configuration is used:
+ *     - 1 pool: cCOP<->cUSD
+ *     - 1 rate feed: COPUSD
+ *     - Configuration params needed to initialize the cCOP stable token
+ */
+library cCOPConfig {
+  using FixidityLib for FixidityLib.Fraction;
+  using Contracts for Contracts.Cache;
+
+  struct cCOP {
+    Config.Pool poolConfig;
+    Config.RateFeed rateFeedConfig;
+    Config.StableTokenV2 stableTokenConfig;
+  }
+
+  /**
+   * @dev Returns the populated configuration object for the cCOP governance proposal.
+   */
+  function get(Contracts.Cache storage contracts) internal view returns (cCOP memory config) {
+    config.poolConfig = cCOPcUSD_PoolConfig(contracts);
+    config.rateFeedConfig = COPUSD_RateFeedConfig();
+    config.stableTokenConfig = stableTokencCOPConfig();
+  }
+
+  /* ==================== Rate Feed Configuration ==================== */
+
+  /**
+   * @dev Returns the configuration for the COPUSD rate feed.
+   */
+  function COPUSD_RateFeedConfig() internal pure returns (Config.RateFeed memory rateFeedConfig) {
+    // TODO: Get confirmation for Roman that these are OK
+    // These are the exact same as the $PUSO rate feed config
+    rateFeedConfig.rateFeedID = Config.rateFeedID("relayed:COPUSD");
+    rateFeedConfig.medianDeltaBreaker0 = Config.MedianDeltaBreaker({
+      enabled: true,
+      threshold: FixidityLib.newFixedFraction(4, 100), // 4%
+      cooldown: 15 minutes,
+      smoothingFactor: FixidityLib.newFixedFraction(5, 1000).unwrap() // 0.005
+    });
+  }
+
+  /* ==================== Pool Configuration ==================== */
+
+  /**
+   * @dev Returns the configuration for the cCOPcUSD pool.
+   */
+  function cCOPcUSD_PoolConfig(
+    Contracts.Cache storage contracts
+  ) internal view returns (Config.Pool memory poolConfig) {
+    // TODO: Get confirmation from Roman that these are OK
+    // These were taken from the $PUSO pool and adjusted to the COP/USD exchange rate,
+    // which was 0.00023747 at the time of writing
+    poolConfig = Config.Pool({
+      asset0: contracts.celoRegistry("StableToken"),
+      asset1: contracts.deployed("StableTokenCOPProxy"),
+      isConstantSum: true,
+      spread: FixidityLib.newFixedFraction(3, 1000), // 0.3%, in line with current DT of chainlink feed
+      referenceRateResetFrequency: 5 minutes,
+      minimumReports: 1,
+      stablePoolResetSize: 10_000_000 * 1e18,
+      referenceRateFeedID: Config.rateFeedID("relayed:COPUSD"),
+      asset0limits: Config.TradingLimit({
+        enabled0: true,
+        timeStep0: 5 minutes,
+        limit0: 200_000,
+        enabled1: true,
+        timeStep1: 1 days,
+        limit1: 1_000_000,
+        enabledGlobal: true,
+        limitGlobal: 5_000_000
+      }),
+      asset1limits: Config.TradingLimit({
+        enabled0: true,
+        timeStep0: 5 minutes,
+        limit0: 4211 * 200_000,
+        enabled1: true,
+        timeStep1: 1 days,
+        limit1: 4211 * 1_000_000,
+        enabledGlobal: true,
+        limitGlobal: 4211 * 5_000_000
+      })
+    });
+  }
+
+  /* ==================== Stable Token Configuration ==================== */
+
+  /**
+   * @dev Returns the configuration for the cCOP stable token.
+   */
+  function stableTokencCOPConfig() internal pure returns (Config.StableTokenV2 memory config) {
+    config = Config.StableTokenV2({ name: "Celo Colombian Peso", symbol: "cCOP" });
+  }
+}