feat: Add firmament waypoint import / export that remembers relative waypoints

src/main/kotlin/util/FirmFormatters.kt

@@ -13,6 +13,7 @@ import kotlin.math.roundToInt
 import kotlin.time.Duration
 import kotlin.time.Duration.Companion.seconds
 import net.minecraft.text.Text
+import net.minecraft.util.math.BlockPos
 
 object FirmFormatters {
 
@@ -131,4 +132,7 @@ object FirmFormatters {
 		return if (boolean == trueIsGood) text.lime() else text.red()
 	}
 
+	fun formatPosition(position: BlockPos): Text {
+		return Text.literal("x: ${position.x}, y: ${position.y}, z: ${position.z}")
+	}
 }

src/main/kotlin/util/data/MultiFileDataHolder.kt

@@ -0,0 +1,63 @@
+package moe.nea.firmament.util.data
+
+import kotlinx.serialization.KSerializer
+import kotlin.io.path.createDirectories
+import kotlin.io.path.deleteExisting
+import kotlin.io.path.exists
+import kotlin.io.path.extension
+import kotlin.io.path.listDirectoryEntries
+import kotlin.io.path.nameWithoutExtension
+import kotlin.io.path.readText
+import kotlin.io.path.writeText
+import moe.nea.firmament.Firmament
+
+abstract class MultiFileDataHolder<T>(
+	val dataSerializer: KSerializer<T>,
+	val configName: String
+) { // TODO: abstract this + ProfileSpecificDataHolder
+	val configDirectory = Firmament.CONFIG_DIR.resolve(configName)
+	private var allData = readValues()
+	protected fun readValues(): MutableMap<String, T> {
+		if (!configDirectory.exists()) {
+			configDirectory.createDirectories()
+		}
+		val profileFiles = configDirectory.listDirectoryEntries()
+		return profileFiles
+			.filter { it.extension == "json" }
+			.mapNotNull {
+				try {
+					it.nameWithoutExtension to Firmament.json.decodeFromString(dataSerializer, it.readText())
+				} catch (e: Exception) { /* Expecting IOException and SerializationException, but Kotlin doesn't allow multi catches*/
+					IDataHolder.badLoads.add(configName)
+					Firmament.logger.error(
+						"Exception during loading of multi file data holder $it ($configName). This will reset that profiles config.",
+						e
+					)
+					null
+				}
+			}.toMap().toMutableMap()
+	}
+
+	fun save() {
+		if (!configDirectory.exists()) {
+			configDirectory.createDirectories()
+		}
+		val c = allData
+		configDirectory.listDirectoryEntries().forEach {
+			if (it.nameWithoutExtension !in c.mapKeys { it.toString() }) {
+				it.deleteExisting()
+			}
+		}
+		c.forEach { (name, value) ->
+			val f = configDirectory.resolve("$name.json")
+			f.writeText(Firmament.json.encodeToString(dataSerializer, value))
+		}
+	}
+
+	fun list(): Map<String, T> = allData
+	val validPathRegex = "[a-zA-Z0-9_][a-zA-Z0-9\\-_.]*".toPattern()
+	fun insert(name: String, value: T) {
+		require(validPathRegex.matcher(name).matches()) { "Not a valid name: $name" }
+		allData[name] = value
+	}
+}