package me.km.api;

import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import me.km.PackageHelper;
import me.km.databank.SimpleDataBank;
import net.minecraft.util.text.TextFormatting;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.fml.common.event.FMLServerStartingEvent;
import net.minecraftforge.fml.common.eventhandler.EventBus;

public class Module extends MessageSender
{
    private final HashMap<String, ModuleCommand> commands;
    private final String mname;
    private final HashMap<Class, ModuleListener> events;
    private SimpleDataBank bank;
    
    public Module(String mname, String prefix, TextFormatting color)
    {
        super(prefix, color);
        commands = new HashMap<>();
        this.mname = mname;
        events = new HashMap<>();
        bank = null;
        
        super.sendToConsole("Das Modul " + color + mname + TextFormatting.RESET + " wurde geladen.");
    }
    
    //--------------------------------------------------------------------------
    // Allgemeine Rückgaben
    //--------------------------------------------------------------------------
    
    public String getName()
    {
        return mname;
    }
    
    //--------------------------------------------------------------------------
    // DataBank
    //--------------------------------------------------------------------------
    
    public void setDataBank(SimpleDataBank bank)
    {
        this.bank = bank;
        this.sendToConsole("Die Datenbank wurde geladen.");
    }
    
    @SuppressWarnings("unchecked")
    public <T extends SimpleDataBank> T getDataBank(Class<T> c)
    {
        return (T) bank;
    }  
    
    //--------------------------------------------------------------------------
    // Command-Methoden
    //--------------------------------------------------------------------------
    
    public void registerCommand(FMLServerStartingEvent e, ModuleCommand command)
    {
        e.registerServerCommand(command);
        if(commands.put(command.getName(), command) != null) 
        {
            this.sendToConsole("Der Command '" + command.getName() + "' wurde ein weiteres Mal geladen.");
        }
    }
    
    @SuppressWarnings("unchecked")
    public void registerCommands(FMLServerStartingEvent e, String packageName)
    {
        PackageHelper.getClasses(packageName).stream().filter(c -> ModuleCommand.class.isAssignableFrom(c)).forEach((Class c) -> 
        {
            try 
            {
                ModuleCommand command = (ModuleCommand) c.getDeclaredConstructor(Module.class).newInstance(this);
                registerCommand(e, command);
            }
            catch(ClassCastException | NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex)
            { 
                this.sendToConsole("Die Klasse '" + c + "' wurde nicht geladen.");
            }
        });
        this.sendToConsole("Alle Commands wurden geladen.");
    }
    
    public ModuleCommand getCommand(String name)
    {
        return commands.get(name);
    }
    
    @SuppressWarnings("unchecked")
    public <T extends ModuleCommand> T getCommand(Class<T> c)
    {   
        return (T) commands.get(c.getSimpleName().substring(7).toLowerCase());
    }
    
    //--------------------------------------------------------------------------
    // Event-Methoden
    //--------------------------------------------------------------------------
    
    @SuppressWarnings("unchecked")
    public void registerEvents(String packageName)
    {
        EventBus bus = MinecraftForge.EVENT_BUS;
        PackageHelper.getClasses(packageName).stream().filter(c -> ModuleListener.class.isAssignableFrom(c)).forEach((Class c) -> 
        {
            try 
            {   
                ModuleListener l = (ModuleListener) c.getDeclaredConstructor(Module.class).newInstance(this);
                events.put(c, l);
                bus.register(l);
            }
            catch(NoSuchMethodException | ClassCastException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex)
            {
                this.sendToConsole("Fehler bei " + c);
                this.sendToConsole(ex.toString());
            }
        });
        this.sendToConsole("Alle Events wurden geladen.");
    }
    
    @SuppressWarnings("unchecked")
    public <T extends ModuleListener> T getEvent(Class<T> c)
    {
        return (T) events.get(c);
    }
}