#! /usr/bin/env node
// This is an executable fine..
import { readFileSync, writeFileSync } from "fs";
import { dlog } from "./dlog";
import { dvalidation } from "./dvalidation";

// this program read the file, find the patch version, increment it and write the updated version.
function autoIncrementVersionInPackageJSON(file: string) {
  console.log(`Processing ${file}`);
  try {
    let data = readFileSync(file);
    dvalidation.validateOrThrow(data != null, "Not able to read given file");
    let data1 = data.toString();
    let match_str: string[] | null = data1.match(/"version": "[0-9]?\.[0-9]?\.([0-9]*?)",/);
    dvalidation.validateOrThrow(match_str != null, "Not able to find patch version number.");
    let patch_num = parseInt(match_str!![1]);
    dlog.d(`Creating new version to ${patch_num + 1}`);
    let result = data1.replace(/("version": "[0-9]?\.[0-9]?\.)([0-9]*?)(",)/, `$1${patch_num + 1}$3`);
    console.log(result);
    writeFileSync(file, result);
  } catch (err) {
    dlog.ex(err as Error);
  }
}

// Main function call
dvalidation.validateOrThrow(process.argv.length == 3, "You must pass exactly one args");
autoIncrementVersionInPackageJSON(process.argv[2]);