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@file:OptIn(ExperimentalContracts::class)
package moe.nea.firmament.features.inventory.storageoverlay
import kotlin.contracts.ExperimentalContracts
import kotlin.contracts.contract
import net.minecraft.client.gui.screen.Screen
import net.minecraft.client.gui.screen.ingame.GenericContainerScreen
import net.minecraft.screen.GenericContainerScreenHandler
import moe.nea.firmament.util.ifMatches
import moe.nea.firmament.util.unformattedString
/**
* A handle representing the state of the "server side" screens.
*/
sealed interface StorageBackingHandle {
sealed interface HasBackingScreen {
val handler: GenericContainerScreenHandler
}
/**
* The main storage overview is open. Clicking on a slot will open that page. This page is accessible via `/storage`
*/
data class Overview(override val handler: GenericContainerScreenHandler) : StorageBackingHandle, HasBackingScreen
/**
* An individual storage page is open. This may be a backpack or an enderchest page. This page is accessible via
* the [Overview] or via `/ec <index + 1>` for enderchest pages.
*/
data class Page(override val handler: GenericContainerScreenHandler, val storagePageSlot: StoragePageSlot) :
StorageBackingHandle, HasBackingScreen
companion object {
private val enderChestName = "^Ender Chest \\(([1-9])/[1-9]\\)$".toRegex()
private val backPackName = "^.+Backpack \\(Slot #([0-9]+)\\)$".toRegex()
/**
* Parse a screen into a [StorageBackingHandle]. If this returns null it means that the screen is not
* representable as a [StorageBackingHandle], meaning another screen is open, for example the enderchest icon
* selection screen.
*/
fun fromScreen(screen: Screen?): StorageBackingHandle? {
contract {
returnsNotNull() implies (screen != null)
}
if (screen == null) return null
if (screen !is GenericContainerScreen) return null
val title = screen.title.unformattedString
if (title == "Storage") return Overview(screen.screenHandler)
return title.ifMatches(enderChestName) {
Page(screen.screenHandler, StoragePageSlot.ofEnderChestPage(it.groupValues[1].toInt()))
} ?: title.ifMatches(backPackName) {
Page(screen.screenHandler, StoragePageSlot.ofBackPackPage(it.groupValues[1].toInt()))
}
}
}
}
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