rudimentary config gui (again)

src/main/kotlin/moe/nea/notenoughupdates/util/data/ProfileSpecificDataHolder.kt

@@ -0,0 +1,82 @@
+package moe.nea.notenoughupdates.util.data
+
+import java.nio.file.Path
+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.notenoughupdates.NotEnoughUpdates
+import moe.nea.notenoughupdates.util.SBData
+
+abstract class ProfileSpecificDataHolder<S>(
+    private val dataSerializer: KSerializer<S>,
+    val configName: String,
+    private val configDefault: () -> S
+) : IDataHolder<S?> {
+
+    var allConfigs: MutableMap<String, S>
+
+    override val data: S?
+        get() = SBData.profileCuteName?.let {
+            allConfigs.computeIfAbsent(it) { configDefault() }
+        }
+
+    init {
+        allConfigs = readValues()
+        readValues()
+        IDataHolder.putDataHolder(this::class, this)
+    }
+
+    private val configDirectory: Path get() = NotEnoughUpdates.CONFIG_DIR.resolve("profiles").resolve(configName)
+
+    private fun readValues(): MutableMap<String, S> {
+        if (!configDirectory.exists()) {
+            configDirectory.createDirectories()
+        }
+        val profileFiles = configDirectory.listDirectoryEntries()
+        return profileFiles
+            .filter { it.extension == "json" }
+            .mapNotNull {
+                try {
+                    it.nameWithoutExtension to NotEnoughUpdates.json.decodeFromString(dataSerializer, it.readText())
+                } catch (e: Exception) { /* Expecting IOException and SerializationException, but Kotlin doesn't allow multi catches*/
+                    IDataHolder.badLoads.add(configName)
+                    NotEnoughUpdates.logger.error(
+                        "Exception during loading of profile specific config file $it ($configName). This will reset that profiles config.",
+                        e
+                    )
+                    null
+                }
+            }.toMap().toMutableMap()
+    }
+
+    override fun save() {
+        if (!configDirectory.exists()) {
+            configDirectory.createDirectories()
+        }
+        val c = allConfigs
+        configDirectory.listDirectoryEntries().forEach {
+            if (it.nameWithoutExtension !in c) {
+                it.deleteExisting()
+            }
+        }
+        c.forEach { (name, value) ->
+            val f = configDirectory.resolve("$name.json")
+            f.writeText(NotEnoughUpdates.json.encodeToString(dataSerializer, value))
+        }
+    }
+
+    override fun markDirty() {
+        IDataHolder.markDirty(this::class)
+    }
+
+    override fun load() {
+        allConfigs = readValues()
+    }
+
+}