package processes

class ProcessesBehaviour( val form : ProcessesForm ) : TableBehaviour( form.title ), Promptable {

    val refresh = Action( "Refresh", this:>refresh )
        .icon("refresh").shortcut( Key.F5.noMods() )

    init {
        columns = listOf<TableColumn>(
            TableColumn( "UID", 100 ),
            TableColumn( "PID", 100 ),
            TableColumn( "Command" )
        )
        form.every.listen( this:>refresh )
    }

    override meth toolbar() = listOf<Feature>(
        form.every,
        separator,
        TextFeature("-C"), form.selectByCommand,
        TextFeature("-u"), form.selectByUser,
        TextFeature("-g"), form.selectByGroup,
        refresh
    )


    override meth attached( container : Container ) {
        super.attached( container )
        refresh()
    }

    meth refresh() {
        rows.clear()
        
        // TODO Shell Escape
        val everyFlag = if (form.every.value) "-e" else ""
        val commandOption = if (form.selectByCommand.value == "" ) "" else "-C ${form.selectByCommand.value}"
        val userOption = if (form.selectByUser.value == "" ) "" else "-u ${form.selectByUser.value}"
        val groupOption = if (form.selectByGroup.value == "" ) "" else "-g ${form.selectByGroup.value}"

        val command = $( ps $commandOption $userOption $groupOption $everyFlag -f )

        val lines = command.eval().split("\n")
        
        val pattern = Pattern.compile("(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(\\S*)\\s+(.*)")

        var first = true
        for (line in lines) {
            if (first) {
                first = false
                continue
            }
            pattern.matcher( line ).apply {
                if (find()) {
                    val row = ProcessData(
                        group(1), group(2), group(8)
                    )
                    rows.add(row)
                }
            }
        }
    }

    override meth promptForm() = form

}