io.github.freya022.botcommands.internal.commands.prefixed.TextCommandComparator.kt Maven / Gradle / Ivy

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A Kotlin-first (and Java) framework that makes creating Discord bots a piece of cake, using the JDA library.

There is a newer version: 3.0.0-alpha.18

package io.github.freya022.botcommands.internal.commands.prefixed

import io.github.freya022.botcommands.api.core.service.getService
import io.github.freya022.botcommands.api.parameters.RegexParameterResolver
import io.github.freya022.botcommands.api.parameters.ResolverContainer
import io.github.freya022.botcommands.api.parameters.wrap
import io.github.freya022.botcommands.internal.commands.prefixed.autobuilder.metadata.TextFunctionMetadata
import io.github.freya022.botcommands.internal.core.BContextImpl
import io.github.freya022.botcommands.internal.utils.ReflectionUtils.nonInstanceParameters
import io.github.freya022.botcommands.internal.utils.shortSignatureNoSrc
import io.github.oshai.kotlinlogging.KotlinLogging
import kotlin.math.min
import kotlin.reflect.KParameter
import kotlin.reflect.jvm.jvmErasure

internal class TextCommandComparator(private val context: BContextImpl) : Comparator {
    private val logger = KotlinLogging.logger {  }

    private val TextFunctionMetadata.optionParameters
        get() = func.nonInstanceParameters
            .drop(1)
            .filter { context.getService().hasResolverOfType>(it.wrap()) }

    //TODO is this correct ? the same old implementation did not function with the new objects.
    override fun compare(o1: TextFunctionMetadata, o2: TextFunctionMetadata): Int {
        if (o1.func == o2.func) return 0

        //Put command with options first
        if (o1.optionParameters.any() && !o2.optionParameters.any()) {
            return -1
        } else if (!o1.optionParameters.any() && o2.optionParameters.any()) {
            return 1
        }

        val order1 = o1.annotation.order
        val order2 = o2.annotation.order
        if (order1 != 0 && order2 != 0) {
            if (order1 == order2) {
                logger.warn {
                    "Method ${o1.func.shortSignatureNoSrc} and ${o2.func.shortSignatureNoSrc} have the same order (${order1})"
                }
            }

            return order1.compareTo(order2)
        }

        val o1Parameters: List = o1.optionParameters
        val o2Parameters: List = o2.optionParameters
        for (i in 0 until min(o1Parameters.size, o2Parameters.size)) {
            if (o1Parameters[i].type == o2Parameters[i].type) {
                continue
            }

            return when (o1Parameters[i].type.jvmErasure) {
                String::class -> 1
                else -> -1
            }
        }

        return 1
    }
}