Mini-plugin to optimise imports in the background in all project Kotlin files

plugin.kts

import com.intellij.codeInsight.actions.OptimizeImportsProcessor
import com.intellij.lang.Language
import com.intellij.psi.PsiFile import liveplugin.PluginUtil
import liveplugin.registerAction

registerAction("Background Optimize Imports") { event ->
    val project = event.project ?: return@registerAction
    val kotlinLanguage = Language.findLanguageByID("kotlin")!!
    val psiFiles = PluginUtil.allPsiItemsIn(project)
        .filterIsInstance<PsiFile>()
        .filter { it.language == kotlinLanguage }

    liveplugin.runBackgroundTask("Background Optimize Imports") { indicator ->
        indicator.isIndeterminate = false
        OptimizeImportsProcessor(project, psiFiles.toTypedArray(), null)
            .apply { processFilesUnderProgress(indicator) }
            .run()
    }
}