Script to update the JDK Version for VSCode to match the one defined in the Brachyura Buildscript.java after switching branches

update-runtime-git-hook.js

#!/usr/bin/env node
// copy this file into .git/hooks/post-checkout
const path = require("path")
const fs = require("fs")

//find the required java version from the build script
const javaVersion = parseInt(
  fs
    .readFileSync(
      path.join(__dirname, "../../buildscript/src/main/java/Buildscript.java")
    )
    .toString()
    .match(/public int getJavaVersion\(\) \{.*?return (\d)+;.*?\}/s)?.[1] ??
    "8",
  10
)

//switch the defalt runtime to the correct version in settings.json
const settingsPath = path.join(__dirname, "../../.vscode/settings.json")
const settings = JSON.parse(
  fs
    .readFileSync(settingsPath)
    .toString()
    .replace(/,(\s*[}\]])/gs, "$1")
)

let modified = false
settings["java.configuration.runtimes"].forEach(runtime => {
  if (runtime.name.replace("1.", "").includes("-" + javaVersion.toString())) {
    if (!runtime.default) {
      runtime.default = true
      modified = true
    }
  } else if (runtime.default) {
    runtime.default = false
    modified = true
  }
})

// write the modified settings.json back to the file
if (modified) {
  fs.writeFileSync(settingsPath, JSON.stringify(settings, null, "  "))
}