import com.sun.org.apache.bcel.internal.util.Args
import com.xenomachina.argparser.ArgParser
import com.xenomachina.argparser.mainBody
import interpreter.FileLoader
import io.GhentPrologArgParser
import io.Logger
import prolog.Program
import prolog.ast.logic.Clause
import repl.Repl

fun main(args: Array<String>) = mainBody {
    // Parse command line arguments
    val parsedArgs = ArgParser(args).parseInto(::GhentPrologArgParser)

    parsedArgs.run {
        val loader = FileLoader()

        // Set the verbosity level
        Logger.level = verbosity

        // Check if script was provided
        for (file in script) {
            loader.load(file)
        }

        // Check if REPL was requested
        if (repl) {
            Repl().start()
        } else {
            Logger.warn("REPL not started. Use -r or --repl to start the REPL.")
        }
    }
}

fun help() {
    println("""
        Ghent Prolog: A Prolog interpreter in Kotlin
        
        Options:
        -s, --source <file>  Specify the source file to load
        -r, --repl           Start the REPL (default)
        -v, --verb
        -h, --help           Show this help message
    """.trimIndent())
}