package com.thebrokenrail.scriptcraft.core;

import com.thebrokenrail.scriptcraft.core.quickjs.JSException;
import com.thebrokenrail.scriptcraft.core.quickjs.QuickJSNative;
import com.thebrokenrail.scriptcraft.core.quickjs.QuickJSManager;
import net.fabricmc.api.ModInitializer;
import net.fabricmc.loader.api.FabricLoader;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.regex.Pattern;

@SuppressWarnings("unused")
public class ScriptCraftCore implements ModInitializer {
    private static final HashMap<String, Bridge> bridges = new HashMap<>();

    public static void addBridge(String name, Bridge bridge) {
        bridges.put(name, bridge);
    }

    public static Object useBridgeNative(String name, Object... args) {
        QuickJSManager.Task task = new QuickJSManager.Task() {
            @Override
            protected Object run(QuickJSNative quickjs) {
                if (bridges.containsKey(name)) {
                    return bridges.get(name).use(args);
                } else {
                    throw new RuntimeException("Invalid Bridge: '" + name + '\'');
                }
            }
        };
        return QuickJSManager.sendTaskFromQuickJS(task);
    }

    public static Object useBridge(String method, Object... args) {
        QuickJSManager.Task task = new QuickJSManager.Task() {
            @Override
            protected Object run(QuickJSNative quickjs) throws JSException {
                return quickjs.bridge(method, args);
            }
        };
        return QuickJSManager.sendTaskToQuickJS(task);
    }

    public static final String NAMESPACE = "scriptcraft";
    public static final Pattern MOD_ID_PATTERN = Pattern.compile("[a-z][a-z0-9-_]{1,63}");

    @Override
    public void onInitialize() {
        QuickJSManager.init(new QuickJSManager.Task() {
            @Override
            protected Object run(QuickJSNative quickjs) {
                List<ScriptCraftEntrypoint> mods = FabricLoader.getInstance().getEntrypoints(NAMESPACE, ScriptCraftEntrypoint.class);
                List<ScriptCraftEntrypoint> initializedMods = new ArrayList<>();
                for (ScriptCraftEntrypoint mod : mods) {
                    if (MOD_ID_PATTERN.matcher(mod.getModID()).matches()) {
                        mod.registerBridges();
                        initializedMods.add(mod);
                    } else {
                        System.err.println("Invalid Mod ID: " + mod.getModID());
                    }
                }
                for (ScriptCraftEntrypoint mod : initializedMods) {
                    quickjs.run("import '" + mod.getModID() + "';");
                }
                return null;
            }
        });
    }
}