extensions.kt

package gdx.liftoff.views

import com.badlogic.gdx.scenes.scene2d.ui.Button
import com.badlogic.gdx.utils.ObjectMap
import com.github.czyzby.autumn.annotation.Processor
import com.github.czyzby.autumn.context.Context
import com.github.czyzby.autumn.context.ContextDestroyer
import com.github.czyzby.autumn.context.ContextInitializer
import com.github.czyzby.autumn.processor.AbstractAnnotationProcessor
import com.github.czyzby.lml.annotation.LmlActor
import gdx.liftoff.config.inject
import gdx.liftoff.data.libraries.Library

/**
 * Holds data about official and third-party extensions.
 */
@Processor
class ExtensionsData : AbstractAnnotationProcessor<Extension>() {
    val extensionsById = mutableMapOf<String, Library>()
    val official = mutableListOf<Library>()
    val thirdParty = mutableListOf<Library>()

    @LmlActor("\$officialExtensions") private val officialButtons: ObjectMap<String, Button> = inject()
    @LmlActor("\$thirdPartyExtensions") private val thirdPartyButtons: ObjectMap<String, Button> = inject()

    fun getSelectedOfficialExtensions(): Array<Library> = official.filter { officialButtons.get(it.id).isChecked }.toTypedArray()
    fun getSelectedThirdPartyExtensions(): Array<Library> = thirdParty.filter { thirdPartyButtons.get(it.id).isChecked }.toTypedArray()
    fun hasExtensionSelected(id: String): Boolean = (officialButtons.containsKey(id) && officialButtons.get(id).isChecked) || (thirdPartyButtons.containsKey(id) && thirdPartyButtons.get(id).isChecked)

    // Automatic scanning of extensions:
    override fun getSupportedAnnotationType(): Class<Extension> = Extension::class.java
    override fun isSupportingTypes(): Boolean = true
    override fun processType(
        type: Class<*>,
        annotation: Extension,
        component: Any,
        context: Context,
        initializer: ContextInitializer,
        contextDestroyer: ContextDestroyer
    ) {
        val library = component as Library
        if (annotation.official) { official } else { thirdParty }.add(library)
        extensionsById[library.id] = library
    }
}

/**
 * Should annotate all third-party extensions.
 */
@Target(AnnotationTarget.CLASS)
@Retention(AnnotationRetention.RUNTIME)
annotation class Extension(val official: Boolean = false)