Modify downloadBinary.js to improve comments and clarify the purpose of each section

Author: yujeong-jeon

packages/commithelper-go/scripts/downloadBinary.js

@@ -4,38 +4,50 @@ const {existsSync, mkdirSync, readFileSync} = require('fs')
 const {platform, arch} = require('os')
 const {join} = require('path')
 
+// Define the mapping of platform and architecture to the corresponding binary file names
 const binaries = {
     'darwin-x64': 'commithelper-go-darwin-amd64',
     'darwin-arm64': 'commithelper-go-darwin-arm64',
     'linux-x64': 'commithelper-go-linux-amd64',
     'win32-x64': 'commithelper-go-windows-amd64.exe',
 }
 
+// Determine the current platform and architecture
 const key = `${platform()}-${arch()}`
 const binary = binaries[key]
 
+// If the platform or architecture is not supported, exit with an error
 if (!binary) {
     console.error(`Unsupported platform: ${platform()} ${arch()}`)
     process.exit(1)
 }
 
-// Read version from package.json
+// Read the version from the package.json file
 const packageJsonPath = join(__dirname, '../package.json')
 const packageJson = JSON.parse(readFileSync(packageJsonPath, 'utf-8'))
 const version = packageJson.version
 
+// Construct the URL to download the binary from the GitHub releases
 const url = `https://github.com/NaverPayDev/cli/releases/download/v${version}/${binary}`
+
+// Define the directory where the binary will be saved
 const binDir = join(__dirname, '../bin')
 
+// Create the bin directory if it does not exist
 if (!existsSync(binDir)) {
     mkdirSync(binDir)
 }
 
+// Define the full path where the binary will be saved
 const outputPath = join(binDir, binary)
 
+// Log the download process
 console.log(`Downloading binary for ${key} from ${url}...`)
+
+// Download the binary using curl and make it executable
 execSync(`curl -L ${url} -o ${outputPath} && chmod +x ${outputPath}`, {
     stdio: 'inherit',
 })
 
+// Log the successful download
 console.log(`Binary downloaded to ${outputPath}`)