package io.gitlab.jfronny.respackopts.gson;

import com.google.gson.*;
import io.gitlab.jfronny.respackopts.Respackopts;
import io.gitlab.jfronny.respackopts.model.DirRpo;
import io.gitlab.jfronny.respackopts.model.condition.Condition;

import java.lang.reflect.Type;
import java.util.Map;

public class DirRpoDeserializer implements JsonDeserializer<DirRpo> {
    @Override
    public DirRpo deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        if (!json.isJsonObject())
            throw new JsonParseException("Rpo must be a json object");
        DirRpo rpo = new DirRpo();
        for (Map.Entry<String, JsonElement> entry : json.getAsJsonObject().entrySet()) {
            switch (entry.getKey()) {
                case "conditions", "condition" -> rpo.conditions = context.deserialize(entry.getValue(), Condition.class);
                case "fallbacks", "fallback" -> {
                    if (entry.getValue().isJsonPrimitive() && entry.getValue().getAsJsonPrimitive().isString()) {
                        rpo.fallback = entry.getValue().getAsString();
                    }
                    else {
                        throw new JsonParseException("Directory .rpos only support a single fallback");
                    }
                }
            }
        }
        return rpo;
    }
}