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package moe.nea.firmament.gui.config.storage
import java.util.UUID
import kotlinx.serialization.json.JsonElement
import kotlinx.serialization.json.JsonObject
import kotlinx.serialization.json.buildJsonObject
import kotlinx.serialization.json.jsonObject
import kotlin.io.path.Path
import kotlin.io.path.exists
import kotlin.io.path.forEachDirectoryEntry
import kotlin.io.path.isDirectory
import kotlin.io.path.listDirectoryEntries
import kotlin.io.path.name
import kotlin.io.path.readText
import kotlin.io.path.writeText
import moe.nea.firmament.util.SBData.NULL_UUID
import moe.nea.firmament.util.data.IConfigProvider
import moe.nea.firmament.util.data.IDataHolder
import moe.nea.firmament.util.data.ProfileKeyedConfig
import moe.nea.firmament.util.json.intoGson
import moe.nea.firmament.util.json.intoKotlinJson
object FirmamentConfigLoader {
val currentConfigVersion = 1000
val configFolder = Path("config/firmament")
.toAbsolutePath()
val storageFolder = configFolder.resolve("storage")
val profilePath = configFolder.resolve("profiles")
val tagLines = listOf(
"<- your config version here",
"I'm a teapot",
"mail.example.com ESMTP",
"Apples"
)
val configVersionFile = configFolder.resolve("config.version")
fun loadConfig() {
if (configFolder.exists()) {
if (!configVersionFile.exists()) {
LegacyImporter.importFromLegacy()
}
updateConfigs()
}
ConfigLoadContext("load-${System.currentTimeMillis()}").use { loadContext ->
val configData = FirstLevelSplitJsonFolder(loadContext, configFolder).load()
loadConfigFromData(configData, Unit, ConfigStorageClass.CONFIG)
val storageData = FirstLevelSplitJsonFolder(loadContext, storageFolder).load()
loadConfigFromData(storageData, Unit, ConfigStorageClass.STORAGE)
var profileData =
profilePath.takeIf { it.exists() }
?.listDirectoryEntries()
?.filter { it.isDirectory() }
?.associate {
UUID.fromString(it.name) to FirstLevelSplitJsonFolder(loadContext, it).load()
}
if (profileData.isNullOrEmpty())
profileData = mapOf(NULL_UUID to JsonObject(mapOf()))
profileData.forEach { (key, value) ->
loadConfigFromData(value, key, ConfigStorageClass.PROFILE)
}
}
}
fun <T> loadConfigFromData(
configData: JsonObject,
key: T?,
storageClass: ConfigStorageClass
) {
for (holder in allConfigs) {
if (holder.storageClass == storageClass) {
val h = (holder as IDataHolder<T>)
if (key == null) {
h.explicitDefaultLoad()
} else {
h.loadFrom(key, configData)
}
}
}
}
fun <T> collectConfigFromData(
key: T,
storageClass: ConfigStorageClass,
): JsonObject {
var json = JsonObject(mapOf())
for (holder in allConfigs) {
if (holder.storageClass == storageClass) {
json = mergeJson(json, (holder as IDataHolder<T>).saveTo(key))
}
}
return json
}
fun <T> saveStorage(
storageClass: ConfigStorageClass,
key: T,
firstLevelSplitJsonFolder: FirstLevelSplitJsonFolder,
) {
firstLevelSplitJsonFolder.save(
collectConfigFromData(key, storageClass)
)
}
fun collectAllProfileIds(): Set<UUID> {
return allConfigs
.filter { it.storageClass == ConfigStorageClass.PROFILE }
.flatMapTo(mutableSetOf()) {
(it as ProfileKeyedConfig<*>).keys()
}
}
fun saveAll() {
ConfigLoadContext("save-${System.currentTimeMillis()}").use { context ->
saveStorage(
ConfigStorageClass.CONFIG,
Unit,
FirstLevelSplitJsonFolder(context, configFolder)
)
saveStorage(
ConfigStorageClass.STORAGE,
Unit,
FirstLevelSplitJsonFolder(context, storageFolder)
)
collectAllProfileIds().forEach { profileId ->
saveStorage(
ConfigStorageClass.PROFILE,
profileId,
FirstLevelSplitJsonFolder(context, profilePath.resolve(profileId.toString()))
)
}
writeConfigVersion()
}
}
fun mergeJson(a: JsonObject, b: JsonObject): JsonObject {
fun mergeInner(a: JsonElement?, b: JsonElement?): JsonElement {
if (a == null)
return b!!
if (b == null)
return a
a as JsonObject
b as JsonObject
return buildJsonObject {
(a.keys + b.keys)
.forEach {
put(it, mergeInner(a[it], b[it]))
}
}
}
return mergeInner(a, b) as JsonObject
}
val allConfigs: List<IDataHolder<*>> = IConfigProvider.providers.allValidInstances.flatMap { it.configs }
fun updateConfigs() {
val startVersion = configVersionFile.readText()
.substringBefore(' ')
.trim()
.toInt()
ConfigLoadContext("update-from-$startVersion-to-$currentConfigVersion-${System.currentTimeMillis()}")
.use { loadContext ->
updateOneConfig(
loadContext,
startVersion,
ConfigStorageClass.CONFIG,
FirstLevelSplitJsonFolder(loadContext, configFolder)
)
updateOneConfig(
loadContext,
startVersion,
ConfigStorageClass.STORAGE,
FirstLevelSplitJsonFolder(loadContext, storageFolder)
)
profilePath.forEachDirectoryEntry {
updateOneConfig(
loadContext,
startVersion,
ConfigStorageClass.PROFILE,
FirstLevelSplitJsonFolder(loadContext, it)
)
}
writeConfigVersion()
}
}
fun writeConfigVersion() {
configVersionFile.writeText("$currentConfigVersion ${tagLines.random()}")
}
private fun updateOneConfig(
loadContext: ConfigLoadContext,
startVersion: Int,
storageClass: ConfigStorageClass,
firstLevelSplitJsonFolder: FirstLevelSplitJsonFolder
) {
if (startVersion == currentConfigVersion) {
loadContext.logDebug("Skipping upgrade to ")
return
}
loadContext.logInfo("Starting upgrade from at ${firstLevelSplitJsonFolder.folder} ($storageClass) to $startVersion")
var data = firstLevelSplitJsonFolder.load()
for (nextVersion in (startVersion + 1)..currentConfigVersion) {
data = updateOneConfigOnce(nextVersion, storageClass, data)
}
firstLevelSplitJsonFolder.save(data)
}
private fun updateOneConfigOnce(
nextVersion: Int,
storageClass: ConfigStorageClass,
data: JsonObject
): JsonObject {
return ConfigFixEvent.publish(ConfigFixEvent(storageClass, nextVersion, data.intoGson().asJsonObject))
.data.intoKotlinJson().jsonObject
}
fun markDirty(holder: IDataHolder<*>) {
saveAll()
}
}
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