Add CLI support

Author: EricxStone

README.md

@@ -27,9 +27,9 @@ import {SOLIDITY_VERSION, EVM_VERSION} from "@ericxstone/hardhat-blockscout-veri
 
 ## Tasks
 
-This plugin adds the `blockscount-verify` task to Hardhat:
+This plugin adds the `blockscout-verify` task to Hardhat:
 ```bash
-npx hardhat blockscount-verify <contract file> <contract address>
+npx hardhat blockscout-verify <contract file> <contract address>
 ```
 
 ## Configuration
@@ -63,5 +63,5 @@ you need it (tasks, scripts, tests, etc).
 
 You can also use the plugin as CLI
 ```bash
-npx hardhat blockscount-verify <contract file> <contract address>
+npx hardhat blockscout-verify <contract file> <contract address>
 ```

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ericxstone/hardhat-blockscout-verify",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "Hardhat plugin for solidity contract verification on Blockscout block explorer",
   "repository": "github:ericxstone/hardhat-blockscout-verify",
   "author": "ericxstone",

src/index.ts

@@ -5,7 +5,7 @@ import path from "path";
 
 // This import is needed to let the TypeScript compiler know that it should include your type
 // extensions in your npm package's types file.
-import "./tasks/blockscount-verify";
+import "./tasks/blockscout-verify";
 import "./tasks/smart-flatten";
 import "./type-extensions";
 

src/tasks/blockscount-verify.ts

@@ -0,0 +1,108 @@
+import { task } from "hardhat/config";
+import { NomicLabsHardhatPluginError } from "hardhat/plugins";
+import {
+  HardhatConfig,
+  HardhatRuntimeEnvironment,
+  TaskArguments,
+} from "hardhat/types";
+import fetch from "node-fetch";
+import path from "path";
+
+task("blockscout-verify")
+  .addParam("filePath", "File path to the contract")
+  .addParam("address", "Deployed contract address")
+  .setAction(async function (
+    args: TaskArguments,
+    hre: HardhatRuntimeEnvironment
+  ) {
+    if (!validateArgs(args)) {
+      throw new NomicLabsHardhatPluginError(
+        "hardhat-blockscout-verify",
+        "Missing args for this task"
+      );
+    }
+    const fileName = args.fileName;
+    const address = args.address;
+    const contractName = path.basename(fileName, ".sol");
+    if (!validateContractName(hre.config, contractName)) {
+      throw new NomicLabsHardhatPluginError(
+        "hardhat-blockscout-verify",
+        "Contracts is not defined in Hardhat config"
+      );
+    }
+    if (!validateBlockscoutURL(hre.config)) {
+      throw new NomicLabsHardhatPluginError(
+        "hardhat-blockscout-verify",
+        "Blockscout URL is not defined in Hardhat config"
+      );
+    }
+    console.log(`Task will process ${contractName} in ${fileName}`);
+    const flattenContent = await hre.run("smart-flatten", {
+      files: [fileName],
+    });
+    console.log("File flatten has completed");
+    const verifyConfig = hre.config.blockscoutVerify!.contracts[contractName];
+    const params: any = {
+      addressHash: address,
+      name: contractName,
+      compilerVersion: verifyConfig!.compilerVersion,
+      optimization: verifyConfig!.optimization,
+      contractSourceCode: flattenContent,
+      autodetectConstructorArguments: "true",
+      evmVersion: verifyConfig!.evmVersion,
+      optimizationRuns: verifyConfig!.optimizationRuns,
+    };
+    const blockscoutURL = hre.config.blockscoutVerify.blockscoutURL;
+    try {
+      console.log(`Sending file for verification to ${blockscoutURL}`);
+      console.log(`Contract address is ${address}`);
+      const verifyRes = await fetch(
+        `${blockscoutURL}/api?module=contract&action=verify`,
+        {
+          method: "POST",
+          body: JSON.stringify(params),
+          headers: {
+            "Content-Type": "application/json",
+          },
+        }
+      );
+      if (verifyRes.status === 200) {
+        console.log(`${contractName} is verified`);
+      } else {
+        throw new NomicLabsHardhatPluginError(
+          "hardhat-blockscout-verify",
+          "Fail to verify contract"
+        );
+      }
+    } catch (e) {
+      throw new NomicLabsHardhatPluginError(
+        "hardhat-blockscout-verify",
+        "Fail to verify contract"
+      );
+    }
+  });
+
+function validateArgs(args: TaskArguments): boolean {
+  return args.fileName !== null && args.address !== null;
+}
+
+function validateBlockscoutURL(hreConfig: HardhatConfig) {
+  if (hreConfig.blockscoutVerify.blockscoutURL === null) {
+    return false;
+  }
+  let url;
+  try {
+    url = new URL(hreConfig.blockscoutVerify.blockscoutURL);
+  } catch (_) {
+    return false;
+  }
+  return true;
+}
+
+function validateContractName(hreConfig: HardhatConfig, contractName: string) {
+  return (
+    hreConfig.blockscoutVerify !== undefined &&
+    hreConfig.blockscoutVerify.contracts !== undefined &&
+    hreConfig.blockscoutVerify.contracts[contractName] !== undefined
+  );
+}