From 756f58ecd66fe7b8c0efaf47d66050bdb4528def Mon Sep 17 00:00:00 2001
From: grimAgent <90475821+grimAgent@users.noreply.github.com>
Date: Tue, 14 Sep 2021 15:54:51 -0400
Subject: [PATCH] Command to verify candymachine price (#397)

---
 js/packages/cli/src/cli.ts           | 45 ++++++++++++++++++++++++++++
 js/packages/cli/src/helpers/cache.ts | 12 ++++----
 2 files changed, 51 insertions(+), 6 deletions(-)

diff --git a/js/packages/cli/src/cli.ts b/js/packages/cli/src/cli.ts
index 3aae533..1de61f3 100755
--- a/js/packages/cli/src/cli.ts
+++ b/js/packages/cli/src/cli.ts
@@ -144,6 +144,51 @@ programCommand('verify')
     saveCache(cacheName, env, cacheContent);
   });
 
+programCommand('verify_price')
+  .option('-p, --price <string>')
+  .option('--cache-path <string>')
+  .action(async (directory, cmd) => {
+    const { keypair, env, price, cacheName, cachePath } = cmd.opts();
+    const lamports = parsePrice(price);
+
+    if (isNaN(lamports)) {
+      return log.error(`verify_price requires a --price to be set`);
+    }
+
+    log.info(`Expected price is: ${lamports}`);
+
+    const cacheContent = loadCache(cacheName, env, cachePath);
+
+    if (!cacheContent) {
+      return log.error(
+        `No cache found, can't continue. Make sure you are in the correct directory where the assets are located or use the --cache-path option.`,
+      );
+    }
+
+    const walletKeyPair = loadWalletKey(keypair);
+    const anchorProgram = await loadAnchorProgram(walletKeyPair, env);
+
+    const [candyMachine] = await getCandyMachineAddress(
+      new PublicKey(cacheContent.program.config),
+      cacheContent.program.uuid,
+    );
+
+    const machine = await anchorProgram.account.candyMachine.fetch(
+      candyMachine,
+    );
+
+    //@ts-ignore
+    const candyMachineLamports = machine.data.price.toNumber();
+
+    log.info(`Candymachine price is: ${candyMachineLamports}`);
+
+    if (lamports != candyMachineLamports) {
+      throw new Error(`Expected price and CandyMachine's price do not match!`);
+    }
+
+    log.info(`Good to go!`);
+  });
+
 programCommand('create_candy_machine')
   .option('-p, --price <string>', 'Price denominated in SOL or spl-token override', '1')
   .option('-t, --spl-token <string>', 'SPL token used to price NFT mint. To use SOL leave this empty.')
diff --git a/js/packages/cli/src/helpers/cache.ts b/js/packages/cli/src/helpers/cache.ts
index 5a55825..cf1fc66 100644
--- a/js/packages/cli/src/helpers/cache.ts
+++ b/js/packages/cli/src/helpers/cache.ts
@@ -2,17 +2,17 @@ import path from "path";
 import { CACHE_PATH } from "./constants";
 import fs from "fs";
 
-export function cachePath(env: string, cacheName: string) {
-  return path.join(CACHE_PATH, `${env}-${cacheName}`);
+export function cachePath(env: string, cacheName: string, cPath: string = CACHE_PATH) {
+  return path.join(cPath, `${env}-${cacheName}`);
 }
 
-export function loadCache(cacheName: string, env: string) {
-  const path = cachePath(env, cacheName);
+export function loadCache(cacheName: string, env: string, cPath: string = CACHE_PATH) {
+  const path = cachePath(env, cacheName, cPath);
   return fs.existsSync(path)
     ? JSON.parse(fs.readFileSync(path).toString())
     : undefined;
 }
 
-export function saveCache(cacheName: string, env: string, cacheContent) {
-  fs.writeFileSync(cachePath(env, cacheName), JSON.stringify(cacheContent));
+export function saveCache(cacheName: string, env: string, cacheContent, cPath: string = CACHE_PATH) {
+  fs.writeFileSync(cachePath(env, cacheName, cPath), JSON.stringify(cacheContent));
 }