// build.sbt
libraryDependencies += "io.github.typesafeconfigops" %% "typesafe-config-ops" % "3.0"

import TypesafeConfigOps.ConfigOptOps

private val cfg = ConfigFactory.parseString("""{ "i" = 1 }""")
cfg.optInt("i") // Some(1)
cfg.optInt("ix") // None

import TypesafeConfigOps.ConfigDefaultOps

private val cfg = ConfigFactory.parseString("""{ "i" = 1 }""")
cfg.getInt("i", 2) // 1
cfg.getInt("ix", 2) // 2

import TypesafeConfigOps.ConfigTemplateOps

val cfg = ConfigFactory.parseString(
  """
    |{
    |  code = <img ${imgSrc} ${imgHeight} ${imgWidth} ${imgBorder} />
    |}
  """.stripMargin)

val code = cfg
  .resolveTemplate(
    "imgSrc" -> "src='%s'",
    "imgHeight" -> "height='%dpx'",
    "imgWidth" -> "width='%dpx'",
    "imgBorder" -> "border='#%X%X%X'")
  .formatTemplate("code", "https://google.com/logo.png", 100, 200, 255, 255, 255)

code // "<img src='https://google.com/logo.png' height='100px' width='200px' border='#FFFFFF' />"