package com.infendro.cli.error

import com.infendro.cli.command.Command
import com.infendro.cli.util.distance
import com.infendro.cli.util.threshold
import kotlin.math.min

class UnknownOption(
    val command: Command,
    val name: String,
) : Error() {
    override val message: String
        get() = buildString {
            val suggestion = command.options
                .flatMap { it.names }
                .associateWith { distance(name, it) }
                .filter { it.value <= min(it.key.length - 1, threshold) }
                .minByOrNull { it.value }
                ?.key

            append("""Unknown option "$name".""")
            if (suggestion != null) append(""" Did you mean "$suggestion"?""")
        }
}