package fileproperties

class ChangeGroupBehaviour( val form : ChangeGroupForm ) : TextBehaviour( form.title ), Promptable {

    init {
        contexts.addAll( contextsForFile( form.fileOrFolder.value) )

        val recurseFlag = if ( form.recurse.value ) "-R" else ""
        val command = $( chgrp $recurseFlag ${form.group.value} '${form.fileOrFolder.value}' )
        append( "$command\n" )
        command.runToTextBehaviour( this, "chgrp", this:>onFinished )
    }

    meth onFinished( success : bool ) {
        if ( success ) {
            append( "\nSuccess\n" )
        }
    }

    override meth promptForm() = form

}


class ChangeGroupForm( initialFileOrFolder : File ) : PromptForm( "Change Group" ) {

    val fileOrFolder = if (initialFileOrFolder.isFolder() ) {
        folderProperty( "Folder", initialFileOrFolder )
    } else {
        fileProperty( "File", initialFileOrFolder )
    }.apply {
        readOnly = true
    }

    val group = stringProperty( "Group", "" )
        .columns(20)

    val recurse = boolProperty( "Apply changes Recursively", false )

    init {
        val ls = $( ls -ld '$initialFileOrFolder' ).eval()
        val matcher = FileProperties.lsPattern.matcher( ls )
        if (matcher.find()) {
            group.value = matcher.group(3)
        }
    }

    override meth elements() = if ( fileOrFolder.value.isFolder() ) {
        listOf<FormElement>( fileOrFolder, group, recurse )
    } else {
        listOf<FormElement>( fileOrFolder, group )
    }

    override meth runner() = ChangeGroupBehaviour( this )    

    override meth copy() : ChangeGroupForm = ChangeGroupForm( fileOrFolder.value ).apply {
        copyPropertiesFrom(this)
    }
}