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package dev.isxander.yacl3.config.v3;
import com.google.gson.*;
import com.mojang.serialization.DataResult;
import com.mojang.serialization.JsonOps;
import org.jetbrains.annotations.ApiStatus;
import org.jetbrains.annotations.Nullable;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
@ApiStatus.Experimental
public abstract class JsonFileCodecConfig<T extends JsonFileCodecConfig<T>> extends CodecConfig<T> {
private final Path configPath;
private final Gson gson;
public JsonFileCodecConfig(Path configPath) {
this.configPath = configPath;
this.gson = createGson();
}
public void saveToFile() {
DataResult<JsonElement> jsonTreeResult = this.encodeStart(JsonOps.INSTANCE);
if (jsonTreeResult.error().isPresent()) {
onSaveError(
SaveError.ENCODING,
new IllegalStateException("Failed to encode: " + jsonTreeResult.error().get().message())
);
return;
}
JsonElement jsonTree = jsonTreeResult.result().orElseThrow();
String json = gson.toJson(jsonTree);
try {
Files.writeString(configPath, json, StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.CREATE);
} catch (IOException e) {
onSaveError(SaveError.WRITING, e);
}
}
public boolean loadFromFile() {
if (Files.notExists(configPath)) {
return false;
}
String json;
try {
json = Files.readString(configPath);
} catch (IOException e) {
onLoadError(LoadError.READING, e);
return false;
}
JsonElement jsonTree;
try {
jsonTree = JsonParser.parseString(json);
} catch (JsonParseException e) {
onLoadError(LoadError.JSON_PARSING, e);
return false;
}
return this.decode(jsonTree, JsonOps.INSTANCE);
}
protected Gson createGson() {
return new GsonBuilder().setPrettyPrinting().create();
}
protected void onSaveError(SaveError error, @Nullable Throwable e) {
throw new IllegalStateException("Error whilst " + error.name().toLowerCase(), e);
}
protected void onLoadError(LoadError error, @Nullable Throwable e) {
throw new IllegalStateException("Error whilst " + error.name().toLowerCase(), e);
}
protected enum SaveError {
WRITING,
ENCODING,
}
protected enum LoadError {
READING,
JSON_PARSING,
DECODING,
}
}
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