Moshi to kotlinx.serialization model convertor script

script.kt

import java.io.File

val importPattern = "import com\\.squareup\\.moshi\\.JsonClass".toRegex()
val jsonAttrPattern = "^(.*)\\@Json\\(name \\= (\".*\")\\)".toRegex()
val jsonClassPattern = "^(.*)\\@JsonClass\\(generateAdapter \\= true\\)".toRegex()

val root = File("/Users/farhad/Projects/Otgahak/Host")
root.walkTopDown()
    .filter { it.extension == "kt" }
    .filter { it.readText().contains(importPattern) }
    .forEach { file ->
        val text = file.readText()
        println("$file")
        println("BEFORE:")
        println(text)
        println()
        println()

        val lines = text.split("\n")
        val after = lines.joinToString("") { line ->
            buildString {
                var wroteLine = false

                importPattern.find(line)?.let {
                    appendLine(line)
                    wroteLine = true
                    appendLine("import kotlinx.serialization.SerialName")
                    appendLine("import kotlinx.serialization.Serializable")
                }

                jsonClassPattern.find(line)?.let {
                    val space = it.groupValues[1]
                    appendLine("$space@Serializable")
                    appendLine(line)
                    wroteLine = true
                }

                jsonAttrPattern.find(line)?.let {
                    val name = it.groupValues[2]
                    val space = it.groupValues[1]
                    appendLine("$space@SerialName($name)")
                    appendLine(line)
                    wroteLine = true
                }

                if (wroteLine.not())
                    appendLine(line)
            }
        }

        println("AFTER:")
        println(after)
        file.writeText(after.trimEnd())
    }