chore: add a script to generate checksum table

The checksum table can be appended in release note

scripts/generate-checksum-table.js

@@ -0,0 +1,110 @@
+// use this script as 'node ./generate-checksum-table.js ./binaries' where Neuron binaries sit in ./binaries
+const fs = require('node:fs')
+const path = require('node:path')
+const crypto = require('node:crypto')
+
+class Package {
+  _name
+  _directory
+
+  get arch() {
+    const name = this._name
+    if (name.endsWith('.exe') || name.includes('-x64') || name.includes('x86_64')) {
+      return 'x64'
+    }
+
+    if (name.includes('-arm64')) {
+      return 'arm64'
+    }
+
+    throw new Error(`Unknown arch: ${name}`)
+  }
+
+  get os() {
+    const name = this._name
+    if (name.endsWith('.exe')) {
+      return 'Windows'
+    }
+
+    if (name.includes('-mac-') || name.endsWith('.dmg')) {
+      return 'macOS'
+    }
+
+    if (name.endsWith('.AppImage')) {
+      return 'Linux'
+    }
+
+    throw new Error(`Unknown OS: ${name}`)
+  }
+
+  get package() {
+    const ext = path.extname(this._name).slice(1)
+    if (ext === 'dmg') return 'DMG'
+    return ext
+  }
+
+  get url() {
+    const version = this._name.split('-')[1]
+    return `https://github.com/nervosnetwork/neuron/releases/download/${version}/${this._name}`
+  }
+
+  get checksum() {
+    const binary = fs.readFileSync(path.join(this._directory, this._name))
+    const hash = crypto.createHash('sha256')
+    hash.update(binary)
+    return hash.digest('hex')
+  }
+
+  constructor(directory, name) {
+    this._directory = directory
+    this._name = name
+  }
+
+  toEntry() {
+    return `${this.os} | ${this.arch} | [${this.package}](${this.url}) | <code>${this.checksum}</code>\n`
+  }
+}
+
+const getChecksumTable = (directory) => {
+  let table = `OS | Arch | Package | SHA256 Checksum\n-- | -- | -- | --\n`
+
+  const files = fs.readdirSync(directory).filter((f) => ['.dmg', '.zip', '.exe', '.AppImage'].includes(path.extname(f)))
+  files
+    .map((f) => {
+      return new Package(directory, f)
+    })
+    .sort((a, b) => {
+      if (a.os !== b.os) {
+        if (a.os === 'Windows') return -1
+        if (a.os === 'Linux') return 1
+      }
+
+      if (a.package !== b.package) {
+        return a.package === 'zip' ? -1 : 1
+      }
+
+      if (a.arch !== b.arch) {
+        return a.arch === 'x64' ? -1 : 1
+      }
+    })
+    .forEach((p) => {
+      table += p.toEntry()
+    })
+
+  return table
+}
+
+if (process.argv.length < 3) {
+  throw new Error(`Directory of binaries is required, use command as 'node ./generate-checksum-table.js ./binaries`)
+}
+
+const directory = process.argv[2]
+
+const checksumTable = getChecksumTable(directory)
+
+console.info(checksumTable)
+
+const output = path.join(directory, './checksums.txt')
+fs.writeFileSync(output, checksumTable, { flag: 'wx' })
+
+console.info(`Checksum table has been generated at ${output}`)