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package moe.nea.firmament.gui.config
import io.github.cottonmc.cotton.gui.client.CottonClientScreen
import io.github.cottonmc.cotton.gui.client.LightweightGuiDescription
import io.github.cottonmc.cotton.gui.widget.data.Insets
import kotlinx.serialization.decodeFromString
import kotlinx.serialization.encodeToString
import kotlinx.serialization.json.JsonElement
import kotlinx.serialization.json.JsonObject
import kotlin.io.path.createDirectories
import kotlin.io.path.readText
import kotlin.io.path.writeText
import kotlin.properties.ReadWriteProperty
import kotlin.reflect.KProperty
import net.minecraft.client.gui.screen.Screen
import net.minecraft.text.Text
import moe.nea.firmament.Firmament
import moe.nea.firmament.util.MC
import moe.nea.firmament.util.ScreenUtil.setScreenLater
abstract class ManagedConfig(val name: String) {
interface OptionHandler<T : Any> {
fun toJson(element: T): JsonElement?
fun fromJson(element: JsonElement): T
fun emitGuiElements(opt: Option<T>, guiAppender: GuiAppender)
}
inner class Option<T : Any> internal constructor(
val config: ManagedConfig,
val propertyName: String,
val default: () -> T,
val handler: OptionHandler<T>
) : ReadWriteProperty<Any?, T> {
val rawLabelText = "firmament.config.${config.name}.${propertyName}"
val labelText = Text.translatable(rawLabelText)
private lateinit var _value: T
private var loaded = false
var value: T
get() {
if (!loaded)
load()
return _value
}
set(value) {
loaded = true
_value = value
}
override fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
this.value = value
}
override fun getValue(thisRef: Any?, property: KProperty<*>): T {
return value
}
private fun load() {
if (data.containsKey(propertyName)) {
try {
value = handler.fromJson(data[propertyName]!!)
} catch (e: Exception) {
Firmament.logger.error(
"Exception during loading of config file $name. This will reset this config.",
e
)
}
}
value = default()
}
internal fun toJson(): JsonElement? {
return handler.toJson(value)
}
fun appendToGui(guiapp: GuiAppender) {
handler.emitGuiElements(this, guiapp)
}
}
val file = Firmament.CONFIG_DIR.resolve("$name.json")
val data: JsonObject by lazy {
try {
Firmament.json.decodeFromString(
file.readText()
)
} catch (e: Exception) {
Firmament.logger.info("Could not read config $name. Loading empty config.")
JsonObject(mutableMapOf())
}
}
fun save() {
val data = JsonObject(allOptions.mapNotNull { (key, value) ->
value.toJson()?.let {
key to it
}
}.toMap())
file.parent.createDirectories()
file.writeText(Firmament.json.encodeToString(data))
}
val allOptions = mutableMapOf<String, Option<*>>()
val sortedOptions = mutableListOf<Option<*>>()
private var latestGuiAppender: GuiAppender? = null
protected fun <T : Any> option(propertyName: String, default: () -> T, handler: OptionHandler<T>): Option<T> {
if (propertyName in allOptions) error("Cannot register the same name twice")
return Option(this, propertyName, default, handler).also {
allOptions[propertyName] = it
sortedOptions.add(it)
}
}
protected fun toggle(propertyName: String, default: () -> Boolean): Option<Boolean> {
return option(propertyName, default, BooleanHandler(this))
}
protected fun button(propertyName: String, runnable: () -> Unit): Option<Unit> {
return option(propertyName, { }, ClickHandler(this, runnable))
}
protected fun string(propertyName: String, default: () -> String): Option<String> {
return option(propertyName, default, StringHandler(this))
}
fun reloadGui() {
latestGuiAppender?.reloadables?.forEach {it() }
}
fun showConfigEditor(parent: Screen? = null) {
val lwgd = LightweightGuiDescription()
val guiapp = GuiAppender(20)
latestGuiAppender = guiapp
guiapp.panel.insets = Insets.ROOT_PANEL
sortedOptions.forEach { it.appendToGui(guiapp) }
guiapp.reloadables.forEach { it() }
lwgd.setRootPanel(guiapp.panel)
setScreenLater(object : CottonClientScreen(lwgd) {
override fun close() {
latestGuiAppender = null
MC.screen = parent
}
})
}
}
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