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path: root/src/main/kotlin/moe/nea/firmament/gui/config/ManagedOption.kt
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package moe.nea.firmament.gui.config

import io.github.notenoughupdates.moulconfig.observer.GetSetter
import kotlinx.serialization.json.JsonElement
import kotlinx.serialization.json.JsonObject
import kotlin.properties.ReadWriteProperty
import kotlin.reflect.KProperty
import net.minecraft.text.Text
import moe.nea.firmament.Firmament

class ManagedOption<T : Any>(
    val element: ManagedConfigElement,
    val propertyName: String,
    val default: () -> T,
    val handler: ManagedConfig.OptionHandler<T>
) : ReadWriteProperty<Any?, T>, GetSetter<T> {
    override fun set(newValue: T) {
        this.value = newValue
    }

    override fun get(): T {
        return this.value
    }

    val rawLabelText = "firmament.config.${element.name}.${propertyName}"
    val labelText = Text.translatable(rawLabelText)

    lateinit var value: T

    override fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
        this.value = value
    }

    override fun getValue(thisRef: Any?, property: KProperty<*>): T {
        return value
    }

    fun load(root: JsonElement) {
        if (root is JsonObject && root.containsKey(propertyName)) {
            try {
                value = handler.fromJson(root[propertyName]!!)
                return
            } catch (e: Exception) {
                Firmament.logger.error(
                    "Exception during loading of config file ${element.name}. This will reset this config.",
                    e
                )
            }
        }
        value = default()
    }

    fun toJson(): JsonElement? {
        return handler.toJson(value)
    }

    fun appendToGui(guiapp: GuiAppender) {
        handler.emitGuiElements(this, guiapp)
    }
}