package io.gitlab.jfronny.respackopts;

import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonPrimitive;
import io.gitlab.jfronny.respackopts.abstractions.JfConfigCategory;
import io.gitlab.jfronny.respackopts.abstractions.JfConfigCategoryPrimary;
import io.gitlab.jfronny.respackopts.abstractions.JfConfigCategorySub;
import me.shedaniel.clothconfig2.api.ConfigBuilder;
import me.shedaniel.clothconfig2.api.ConfigCategory;
import me.shedaniel.clothconfig2.api.ConfigEntryBuilder;
import me.shedaniel.clothconfig2.gui.entries.DropdownBoxEntry;
import me.shedaniel.clothconfig2.impl.builders.DropdownMenuBuilder;
import me.shedaniel.clothconfig2.impl.builders.SubCategoryBuilder;
import net.minecraft.client.gui.screen.FatalErrorScreen;
import net.minecraft.client.gui.screen.Screen;
import net.minecraft.text.*;
import net.minecraft.util.Language;

import java.util.HashMap;
import java.util.Map;
import java.util.TreeSet;

public class GuiFactory {
    public void buildCategory(JsonObject source, String screenId, JfConfigCategory config, ConfigEntryBuilder entryBuilder, String namePrefix) {
        if (!Respackopts.boolVals.containsKey(screenId))
            Respackopts.boolVals.put(screenId, new HashMap<>());
        if (!Respackopts.numVals.containsKey(screenId))
            Respackopts.numVals.put(screenId, new HashMap<>());
        if (!Respackopts.strVals.containsKey(screenId))
            Respackopts.strVals.put(screenId, new HashMap<>());
        if (!Respackopts.enumKeys.containsKey(screenId))
            Respackopts.enumKeys.put(screenId, new HashMap<>());
        String b = "respackopts.field." + screenId;
        for (Map.Entry<String, JsonElement> entry : source.entrySet()) {
            String n = namePrefix + entry.getKey();
            JsonElement e = entry.getValue();
            if (e.isJsonPrimitive()) {
                JsonPrimitive p = e.getAsJsonPrimitive();
                if (p.isBoolean()) {
                    boolean defaultValue = p.getAsBoolean();
                    boolean currentValue = defaultValue;
                    if (Respackopts.boolVals.get(screenId).containsKey(n))
                        currentValue = Respackopts.boolVals.get(screenId).get(n);
                    else
                        Respackopts.boolVals.get(screenId).put(n, defaultValue);
                    config.addEntry(entryBuilder.startBooleanToggle(getText(n, b), currentValue)
                            .setDefaultValue(defaultValue)
                            .setSaveConsumer(v -> Respackopts.boolVals.get(screenId).put(n, v))
                            .build());
                }
                else if (p.isNumber()) {
                    double defaultValue = p.getAsDouble();
                    Double currentValue = defaultValue;
                    if (Respackopts.numVals.get(screenId).containsKey(n))
                        currentValue = Respackopts.numVals.get(screenId).get(n);
                    else
                        Respackopts.numVals.get(screenId).put(n, defaultValue);
                    config.addEntry(entryBuilder.startDoubleField(getText(n, b), currentValue)
                            .setDefaultValue(defaultValue)
                            .setSaveConsumer(v -> Respackopts.numVals.get(screenId).put(n, v))
                            .build());
                }
                else if (p.isString()) {
                    String defaultValue = p.getAsString();
                    String currentValue = defaultValue;
                    if (Respackopts.strVals.get(screenId).containsKey(n))
                        currentValue = Respackopts.strVals.get(screenId).get(n);
                    else
                        Respackopts.strVals.get(screenId).put(n, defaultValue);
                    config.addEntry(entryBuilder.startStrField(getText(n, b), currentValue)
                            .setDefaultValue(defaultValue)
                            .setSaveConsumer(v -> Respackopts.strVals.get(screenId).put(n, v))
                            .build());
                }
            }
            else if (e.isJsonArray()) {
                TreeSet<String> ev = Respackopts.enumKeys.get(screenId).get(n);
                Double c = Respackopts.numVals.get(screenId).get(n);
                String sel = ev.first();
                int i = 0;
                for (String s1 : ev) {
                    if (c.intValue() == i) {
                        sel = s1;
                    }
                    i++;
                }
                config.addEntry(entryBuilder.startDropdownMenu(getText(n, b), (DropdownBoxEntry.SelectionTopCellElement) DropdownMenuBuilder.TopCellElementBuilder.of(sel, (s) -> s, (s) -> new LiteralText(s)), new DropdownBoxEntry.DefaultSelectionCellCreator())
                        .setSuggestionMode(false)
                        .setDefaultValue(ev.first())
                        .setSelections(() -> ev.iterator())
                        .setSaveConsumer(v -> {
                            int j = 0;
                            for (String s1 : ev) {
                                if (s1.equals(v))
                                    Respackopts.numVals.get(screenId).put(n, (double) j);
                                j++;
                            }
                        }).build());
            }
            else if (e.isJsonNull()) {
                System.out.println("[respackopts] Config definition contains null, skipping that entry");
            }
            else if (e.isJsonObject()) {
                SubCategoryBuilder sc = entryBuilder.startSubCategory(getText(n, "respackopts.title." + screenId));
                buildCategory(e.getAsJsonObject(), screenId, new JfConfigCategorySub(sc), entryBuilder, n + ".");
                config.addEntry(sc.build());
            }
            else {
                System.err.println("[respackopts] Unsupported non-primitive datatype");
            }
        }
    }

    public Screen buildGui(JsonObject source, String resourcepackid, Screen parent) {
        try {
            ConfigBuilder builder;
            builder = ConfigBuilder.create()
                    .setParentScreen(parent)
                    .setTitle(getText(resourcepackid, "respackopts.title"));
            ConfigEntryBuilder entryBuilder = builder.entryBuilder();
            builder.setSavingRunnable(Respackopts::save);
            ConfigCategory config = builder.getOrCreateCategory(getText(resourcepackid, "respackopts.title"));
            buildCategory(source, resourcepackid, new JfConfigCategoryPrimary(config), entryBuilder, "");
            return builder.build();
        }
        catch (Throwable t) {
            t.printStackTrace();
            return new FatalErrorScreen(new TranslatableText("respackopts.loadFailed"), new TranslatableText("respackopts.loadError"));
        }
    }

    private Text getText(String key, String idPrefix) {
        String k = idPrefix + "." + key;
        if (Language.getInstance().hasTranslation(k)) return new TranslatableText(k);
        else return new LiteralText(key);
    }
}