Index currency decimals

package.json

@@ -40,7 +40,7 @@
     "@assemblyscript/loader": "^0.19.22",
     "@graphprotocol/graph-cli": "^0.56.0",
     "@graphprotocol/graph-ts": "^0.27.0",
-    "matchstick-as": "^0.5.0"
+    "matchstick-as": "^0.6.0"
   },
   "devDependencies": {
     "assemblyscript": "^0.19.22",

schema.graphql

@@ -56,6 +56,9 @@ type Project @entity {
   "Currency symbol for ERC-20"
   currencySymbol: String
 
+  "Number of decimals used to get a currency's display representation (i.e. 18 for ETH)"
+  currencyDecimals: Int
+
   "Artist description of the project"
   description: String
 
@@ -409,6 +412,9 @@ type PrimaryPurchase @entity {
 
   "Symbol of currency used to purchase token"
   currencySymbol: String
+
+  "Number of decimals used to get a currency's display representation (i.e. 18 for ETH)"
+  currencyDecimals: Int
 }
 
 type MinterFilter @entity {
@@ -501,6 +507,9 @@ type ProjectMinterConfiguration @entity {
   "currency address as defined on minter - address(0) reserved for ether"
   currencyAddress: Bytes!
 
+  "number of decimals used to get a currency's display representation (i.e. 18 for ETH)"
+  currencyDecimals: Int!
+
   "Defines if purchasing token to another is allowed"
   purchaseToDisabled: Boolean!
 

src/helpers.ts

@@ -539,6 +539,7 @@ export function loadOrCreateProjectMinterConfiguration(
     projectMinterConfig.priceIsConfigured = false;
     projectMinterConfig.currencySymbol = "ETH";
     projectMinterConfig.currencyAddress = Address.zero();
+    projectMinterConfig.currencyDecimals = 18;
     projectMinterConfig.purchaseToDisabled = false;
     projectMinterConfig.extraMinterDetails = "{}";
     projectMinterConfig.save();
@@ -924,6 +925,7 @@ export function createPrimaryPurchaseDetailsFromTokenMint<T>(
       );
       purchaseDetails.currencyAddress = minterConfig.currencyAddress;
       purchaseDetails.currencySymbol = minterConfig.currencySymbol;
+      purchaseDetails.currencyDecimals = minterConfig.currencyDecimals;
 
       purchaseDetails.save();
       return purchaseDetails.id;
@@ -953,6 +955,7 @@ export function createPrimaryPurchaseDetailsFromTokenMint<T>(
       purchaseDetails.currencyAddress =
         project.currencyAddress || Address.zero();
       purchaseDetails.currencySymbol = project.currencySymbol || "ETH";
+      purchaseDetails.currencyDecimals = project.currencyDecimals || 18;
 
       purchaseDetails.save();
       return purchaseDetails.id;

src/legacy-minter-suite-mapping.ts

@@ -119,6 +119,8 @@ import {
 
 import { createTypedMapFromEntries, toJSONValue } from "./json";
 
+import { ERC20 } from "../generated/MinterSetPriceERC20/ERC20";
+
 // IFilteredMinterV0 events
 export function handlePricePerTokenInWeiUpdated(
   event: PricePerTokenInWeiUpdated
@@ -162,6 +164,15 @@ export function handleProjectCurrencyInfoUpdated(
 
   projectMinterConfig.currencyAddress = event.params._currencyAddress;
   projectMinterConfig.currencySymbol = event.params._currencySymbol;
+
+  const erc20Contract = ERC20.bind(event.params._currencyAddress);
+  const decimalsResult = erc20Contract.try_decimals();
+  if (!decimalsResult.reverted) {
+    projectMinterConfig.currencyDecimals = decimalsResult.value;
+  } else {
+    projectMinterConfig.currencyDecimals = 18;
+  }
+
   projectMinterConfig.save();
 
   project.updatedAt = event.block.timestamp;
@@ -1246,6 +1257,7 @@ function loadMinterProjectAndConfigLegacyMinters(
     projectMinterConfig.priceIsConfigured = false;
     projectMinterConfig.currencySymbol = "ETH";
     projectMinterConfig.currencyAddress = Address.zero();
+    projectMinterConfig.currencyDecimals = 18;
     projectMinterConfig.purchaseToDisabled = false;
     projectMinterConfig.extraMinterDetails = "{}";
     projectMinterConfig.save();

src/mapping-v0-core.ts

@@ -107,6 +107,7 @@ export function handleMint(event: Mint): void {
     primaryPurchaseDetails.minterAddress = event.address;
     primaryPurchaseDetails.currencyAddress = Address.zero();
     primaryPurchaseDetails.currencySymbol = "ETH";
+    primaryPurchaseDetails.currencyDecimals = 18;
     primaryPurchaseDetails.save();
     token.primaryPurchaseDetails = primaryPurchaseDetails.id;
 
@@ -251,6 +252,7 @@ export function handleAddProject(call: AddProjectCall): void {
   project.createdAt = call.block.timestamp;
   project.currencyAddress = Address.zero();
   project.currencySymbol = "ETH";
+  project.currencyDecimals = 18;
   project.dynamic = dynamic;
   project.externalAssetDependencyCount = BigInt.fromI32(0);
   project.externalAssetDependenciesLocked = false;

src/mapping-v1-core.ts

@@ -76,6 +76,7 @@ import {
   createPrimaryPurchaseDetailsFromTokenMint
 } from "./helpers";
 import { GEN_ART_721_CORE_V1 } from "./constants";
+import { ERC20 } from "../generated/MinterSetPriceERC20/ERC20";
 
 /*** EVENT HANDLERS ***/
 export function handleMint(event: Mint): void {
@@ -242,6 +243,14 @@ export function handleAddProject(call: AddProjectCall): void {
   let maxInvocations = projectTokenInfo.value3;
   let currencyAddress = projectTokenInfo.value5;
   let currencySymbol = projectTokenInfo.value7;
+  let currencyDecimals = 18;
+  if (currencyAddress != Address.zero()) {
+    let currencyContract = ERC20.bind(currencyAddress);
+    let decimals = currencyContract.try_decimals();
+    if (!decimals.reverted) {
+      currencyDecimals = decimals.value;
+    }
+  }
 
   let scriptCount = projectScriptInfo.value1;
   let useHashString = projectScriptInfo.value2;
@@ -259,6 +268,7 @@ export function handleAddProject(call: AddProjectCall): void {
   project.createdAt = timestamp;
   project.currencySymbol = currencySymbol;
   project.currencyAddress = currencyAddress;
+  project.currencyDecimals = currencyDecimals;
   project.dynamic = dynamic;
   project.externalAssetDependencyCount = BigInt.fromI32(0);
   project.externalAssetDependenciesLocked = false;
@@ -589,6 +599,15 @@ export function handleUpdateProjectCurrencyInfo(
   if (project) {
     project.currencySymbol = call.inputs._currencySymbol;
     project.currencyAddress = call.inputs._currencyAddress;
+
+    if (call.inputs._currencyAddress != Address.zero()) {
+      let currencyContract = ERC20.bind(call.inputs._currencyAddress);
+      let decimals = currencyContract.try_decimals();
+      if (!decimals.reverted) {
+        project.currencyDecimals = decimals.value;
+      }
+    }
+
     project.updatedAt = call.block.timestamp;
     project.save();
   }

src/mapping-v2-core.ts

@@ -77,6 +77,7 @@ import {
   FLEX_CONTRACT_EXTERNAL_ASSET_DEP_TYPES,
   GEN_ART_721_CORE_V2
 } from "./constants";
+import { ERC20 } from "../generated/MinterSetPriceERC20/ERC20";
 
 /*** EVENT HANDLERS ***/
 export function handleMint(event: Mint): void {
@@ -380,6 +381,14 @@ export function handleAddProject(call: AddProjectCall): void {
   let maxInvocations = projectTokenInfo.value3;
   let currencySymbol = projectTokenInfo.value7;
   let currencyAddress = projectTokenInfo.value8;
+  let currencyDecimals = 18;
+  if (currencyAddress != Address.zero()) {
+    let currencyContract = ERC20.bind(currencyAddress);
+    let decimals = currencyContract.try_decimals();
+    if (!decimals.reverted) {
+      currencyDecimals = decimals.value;
+    }
+  }
 
   let scriptCount = projectScriptInfo.value1;
   let useHashString = true;
@@ -396,6 +405,7 @@ export function handleAddProject(call: AddProjectCall): void {
   project.contract = contractAddress.toHexString();
   project.createdAt = timestamp;
   project.currencyAddress = currencyAddress;
+  project.currencyDecimals = currencyDecimals;
   project.currencySymbol = currencySymbol;
   project.dynamic = dynamic;
   project.externalAssetDependencyCount = BigInt.fromI32(0);
@@ -621,6 +631,15 @@ export function handleUpdateProjectCurrencyInfo(
   if (project) {
     project.currencySymbol = call.inputs._currencySymbol;
     project.currencyAddress = call.inputs._currencyAddress;
+    project.currencyDecimals = 18;
+    if (call.inputs._currencyAddress != Address.zero()) {
+      let currencyContract = ERC20.bind(call.inputs._currencyAddress);
+      let decimals = currencyContract.try_decimals();
+      if (!decimals.reverted) {
+        project.currencyDecimals = decimals.value;
+      }
+    }
+
     project.updatedAt = call.block.timestamp;
 
     project.save();

src/mapping-v3-core.ts

@@ -688,8 +688,6 @@ function createProject(
   let pricePerTokenInWei = BigInt.fromI32(0);
   let invocations = projectStateData.value.getInvocations();
   let maxInvocations = projectStateData.value.getMaxInvocations();
-  let currencySymbol = "ETH";
-  let currencyAddress = Address.zero();
 
   let scriptCount = projectScriptDetails.value.getScriptCount();
   let useHashString = true;
@@ -706,8 +704,6 @@ function createProject(
   project.complete = false;
   project.contract = contractAddress;
   project.createdAt = timestamp;
-  project.currencyAddress = currencyAddress;
-  project.currencySymbol = currencySymbol;
   project.dynamic = true;
   project.externalAssetDependencyCount = BigInt.fromI32(0);
   project.externalAssetDependenciesLocked = false;

src/split-funds-lib-mapping.ts

@@ -6,6 +6,7 @@ import { ProjectCurrencyInfoUpdated } from "../generated/SplitFundsLib/SplitFund
 import { updateProjectIfMinterConfigIsActive } from "./helpers";
 
 import { loadOrCreateMinterProjectAndConfigIfProject } from "./generic-minter-events-lib-mapping";
+import { ERC20 } from "../generated/MinterSetPriceERC20/ERC20";
 
 ///////////////////////////////////////////////////////////////////////////////
 // EVENT HANDLERS start here
@@ -33,6 +34,15 @@ export function handleProjectCurrencyInfoUpdated(
   const projectMinterConfig = minterProjectAndConfig.projectMinterConfiguration;
   projectMinterConfig.currencyAddress = event.params.currencyAddress;
   projectMinterConfig.currencySymbol = event.params.currencySymbol;
+  projectMinterConfig.currencyDecimals = 18;
+  if (event.params.currencyAddress != Address.zero()) {
+    let currencyContract = ERC20.bind(event.params.currencyAddress);
+    let decimals = currencyContract.try_decimals();
+    if (!decimals.reverted) {
+      projectMinterConfig.currencyDecimals = decimals.value;
+    }
+  }
+
   projectMinterConfig.save();
 
   // induce sync if the project minter configuration is the active one