package fileproperties

class ChangeOwnerBehaviour( val form : ChangeOwnerForm ) : TextBehaviour( form.title ), Promptable {

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

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

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

    override meth promptForm() = form

}


class ChangeOwnerForm( initialFileOrFolder : File ) : PromptForm( "Change Owner" ) {

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

    var initialOwner = ""
    val owner = stringProperty( "Owner", "" )
        .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()) {
            owner.value = matcher.group(2)
        }
    }

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

    override meth runner() = ChangeOwnerBehaviour( this )    

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