language backend logic

src/main/kotlin/io/delilaheve/CustomAnvil.kt

@@ -17,6 +17,7 @@ import xyz.alexcrea.cuanvil.dependency.util.PlatformUtil
 import xyz.alexcrea.cuanvil.enchant.CAEnchantmentRegistry
 import xyz.alexcrea.cuanvil.gui.config.MainConfigGui
 import xyz.alexcrea.cuanvil.gui.util.GuiSharedConstant
+import xyz.alexcrea.cuanvil.lang.Lang
 import xyz.alexcrea.cuanvil.listener.AnvilCloseListener
 import xyz.alexcrea.cuanvil.listener.AnvilResultListener
 import xyz.alexcrea.cuanvil.listener.ChatEventListener
@@ -135,6 +136,25 @@ open class CustomAnvil : JavaPlugin() {
      */
     override fun onEnable() {
         instance = this
+        // Load default configuration
+        try {
+            if(!ConfigHolder.loadDefaultConfig())
+                throw RuntimeException("Error loading configuration file")
+        } catch (e: Exception) {
+            logger.log(Level.SEVERE, "error occurred loading default configuration", e)
+            MetricsUtil.trackError(e)
+            if(tryDirtyStart()) return
+        }
+
+        // Load language
+        try {
+            Lang.reload()
+        } catch (e: Exception) {
+            logger.log(Level.SEVERE, "error occurred loading language file", e)
+            MetricsUtil.trackError(e)
+            if(tryDirtyStart()) return
+        }
+
         try {
             legacyCheck()
         } catch (e: Exception) {
@@ -143,6 +163,7 @@ open class CustomAnvil : JavaPlugin() {
             if(trySafeStart()) return
         }
 
+
         // Add commands
         try {
             CustomAnvilCommand(this)
@@ -152,15 +173,6 @@ open class CustomAnvil : JavaPlugin() {
             if(trySafeStart()) return
         }
 
-        // Load default configuration
-        try {
-            if(!ConfigHolder.loadDefaultConfig())
-                throw RuntimeException("Error loading configuration file")
-        } catch (e: Exception) {
-            logger.log(Level.SEVERE, "error occurred loading default configuration", e)
-            MetricsUtil.trackError(e)
-            if(tryDirtyStart()) return
-        }
 
         // Load dependency
         try {

src/main/kotlin/xyz/alexcrea/cuanvil/command/ReloadExecutor.kt

@@ -8,6 +8,7 @@ import xyz.alexcrea.cuanvil.api.event.CAConfigReadyEvent
 import xyz.alexcrea.cuanvil.config.ConfigHolder
 import xyz.alexcrea.cuanvil.dependency.DependencyManager
 import xyz.alexcrea.cuanvil.gui.config.global.*
+import xyz.alexcrea.cuanvil.lang.Lang
 import xyz.alexcrea.cuanvil.update.UpdateHandler
 
 class ReloadExecutor : CASubCommand {
@@ -58,6 +59,9 @@ class ReloadExecutor : CASubCommand {
         try {
             if (!ConfigHolder.reloadAllFromDisk(hardfail)) return false
 
+            // reload language config
+            Lang.reload()
+
             // Then update all global gui containing value from config
             BasicConfigGui.getInstance()?.updateGuiValues()
             EnchantCostConfigGui.getInstance()?.updateGuiValues()

src/main/kotlin/xyz/alexcrea/cuanvil/lang/Lang.kt

@@ -0,0 +1,93 @@
+package xyz.alexcrea.cuanvil.lang
+
+import io.delilaheve.CustomAnvil
+import xyz.alexcrea.cuanvil.config.ConfigHolder
+
+object Lang {
+
+    private val default = Language(DEFAULT_LANG, false)
+    private var lang = default
+
+    fun reload() {
+        val langID = langID
+        if(lang.name == langID && lang != default)
+            lang.reload()
+        else
+            lang = Language(langID)
+
+        if(default != lang) default.reload()
+    }
+
+    fun String.translate(): String {
+        val value = lang.get(this)
+        if(value != null) return value
+
+        CustomAnvil.log("Missing language data for ${lang.name} using default")
+
+        return default.get(this) ?: this
+    }
+
+    fun String.translate(vararg params: Pair<String, Any>): String {
+        return translate(
+            params.asSequence()
+                .map { Pair(it.first, it.second.toString()) }
+                .toMap()
+        )
+    }
+
+    fun String.translate(vararg params: Pair<Char, Any>): String {
+        return translate(
+            params.asSequence()
+                .map { Pair(it.first.toString(), it.second.toString()) }
+                .toMap()
+        )
+    }
+
+    fun String.translate(vararg params: Pair<String, String>): String {
+        return translate(params.toMap())
+    }
+
+    fun String.translate(vararg params: Pair<Char, String>): String {
+        return translate(
+            params.asSequence()
+                .map { Pair(it.first.toString(), it.second) }
+                .toMap()
+        )
+    }
+
+    fun String.translate(params: Map<String, String>): String {
+        val builder = StringBuilder(translate())
+
+        // replace all placeholder thingy %key -> value
+        for((key, replacement) in params) {
+            var current = 0
+            while(true) {
+                current = builder.indexOf('%', current) + 1
+                if(current < 0 || current + key.length > builder.length) break // may be able to be removed if bound checked in startsWith ?
+                if(!builder.startsWith(key, current, false)) continue
+
+                builder.replace(current - 1, current + key.length, replacement)
+                current = current - 1 + replacement.length
+            }
+        }
+
+        return builder.toString()
+    }
+
+    /*
+     * Config Options & get
+     */
+    const val LANG_PATH = "language"
+    const val DEFAULT_LANG = "en"
+
+    /**
+     * Value of an item rename
+     */
+    private val langID: String
+        get() {
+            return ConfigHolder.DEFAULT_CONFIG
+                .config
+                .getString(LANG_PATH, DEFAULT_LANG)!!
+        }
+
+}

src/main/kotlin/xyz/alexcrea/cuanvil/lang/Language.kt

@@ -0,0 +1,56 @@
+package xyz.alexcrea.cuanvil.lang
+
+import io.delilaheve.CustomAnvil
+import org.bukkit.configuration.file.FileConfiguration
+import org.bukkit.configuration.file.YamlConfiguration
+import java.io.File
+import java.io.InputStreamReader
+import java.util.logging.Level
+
+
+class Language(private val id: String, private val default: Boolean = false) {
+
+    private val resourcePath: String
+    private val file: File
+
+    private val conf: FileConfiguration
+
+    init {
+        conf = YamlConfiguration()
+        resourcePath = "lang/$id.yml"
+        file = File(CustomAnvil.instance.dataFolder, resourcePath)
+
+        reload()
+    }
+
+    fun reload() {
+        if(file.exists() && !default) try {
+            conf.load(file)
+            return
+        } catch(e: Exception) {
+            CustomAnvil.instance.logger.log(
+                Level.SEVERE,
+                "Could not load custom Anvil config file. using to internal resource",
+                e
+            )
+        }
+
+        loadInternalResource()
+    }
+
+    private fun loadInternalResource() {
+        val input = CustomAnvil.instance.getResource(resourcePath)
+        if(input != null)
+            conf.load(InputStreamReader(input))
+        else
+            CustomAnvil.instance.logger.log(Level.SEVERE, "Language $id not found")
+
+    }
+
+    fun get(key: String): String? {
+        return conf.getString(key)
+    }
+
+    val name: String
+        get() = conf.getString("name", id)!!
+}

src/main/resources/config.yml

@@ -16,6 +16,11 @@ metric_type: auto
 # Accept true or false (true by default)
 metric_collect_errors: true
 
+# Which language should the plugin should be
+# If you like to add language yourself see TODO link to guide
+# Currently available languages: en
+language: en
+
 # All anvil cost will be capped to limit_repair_value if enabled.
 #
 # In other words: