#!/usr/bin/env swift

import Foundation

let selectedCompressionAlgorithm = NSData.CompressionAlgorithm.lzma

func compressChainFile(inputFileName: String, outputFileName: String) throws {
    let inputFileHandle = FileHandle(forReadingAtPath: inputFileName)!
    let inputData = inputFileHandle.readDataToEndOfFile() as NSData
    let outputData = try inputData.compressed(using: selectedCompressionAlgorithm) as Data
    FileManager.default.createFile(atPath: outputFileName, contents: outputData, attributes: nil)
    try inputFileHandle.close()
}

do {
    try compressChainFile(inputFileName: "scripts/chains.json", outputFileName: "scripts/chains.json.zip")
    exit(0)
} catch {
    print("An error occurred: \(error)")
    exit(-1)
}