package com.bbn.hadder.commands.owner;

/*
 * @author Skidder / GregTCLTK
 */

import com.bbn.hadder.Hadder;
import com.bbn.hadder.commands.Command;
import com.bbn.hadder.commands.CommandEvent;
import com.bbn.hadder.utils.MessageEditor;

import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

public class EvalCommand implements Command {

    @Override
    public void executed(String[] args, CommandEvent event) {
        if (event.getConfig().getOwners().toString().contains(event.getAuthor().getId())) {
            if (args.length > 0) {
                ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn");

                try {
                    engine.eval("var imports = new JavaImporter(java.io, java.lang, java.util);");
                } catch (ScriptException ex) {
                    ex.printStackTrace();
                }

                engine.put("msg", event.getMessage());
                engine.put("shardmanager", Hadder.shardManager);
                engine.put("rethink", event.getRethink());
                engine.put("event", event);
                engine.put("jda", event.getJDA());
                engine.put("message", event.getMessage());
                engine.put("guild", event.getGuild());
                engine.put("channel", event.getChannel());
                engine.put("author", event.getAuthor());
                engine.put("member", event.getMember());
                engine.put("self", event.getGuild().getSelfMember());

                ScheduledExecutorService service = Executors.newScheduledThreadPool(1);

                service.schedule(() -> {

                    long startExec = System.currentTimeMillis();
                    Object out;

                    try {
                        String script = "";
                        for (int i = 0; i < args.length; i++) {
                            args[i] = args[i].replace("```java", "").replace("```", "");
                            script += i == args.length - 1 ? args[i] : args[i] + " ";
                        }
                        out = engine.eval(script);

                        event.getTextChannel().sendMessage(event.getMessageEditor()
                                .getMessage(MessageEditor.MessageType.INFO, "commands.owner.eval.success.title", "")
                                .addField(event.getMessageEditor().getTerm("commands.owner.eval.success.input"),
                                        "```java\n\n" + script + "```", false)
                                .addField(event.getMessageEditor().getTerm("commands.owner.eval.success.output"),
                                        "```java\n\n" + out.toString() + "```", false)
                                .addField(event.getMessageEditor().getTerm("commands.owner.eval.success.timing"),
                                        System.currentTimeMillis() - startExec + " milliseconds", false)
                                .build()).queue();
                    } catch (Exception ex) {
                        event.getTextChannel().sendMessage(event.getMessageEditor()
                                .getMessage(MessageEditor.MessageType.INFO, "commands.owner.eval.success.title", "")
                                .addField(event.getMessageEditor().getTerm("error"),
                                        "```java\n\n" + ex.getMessage() + "```", false)
                                .addField(event.getMessageEditor().getTerm("commands.owner.eval.success.timing"),
                                        System.currentTimeMillis() - startExec + " milliseconds", false)
                                .build()).queue();

                    }

                    service.shutdownNow();

                }, 0, TimeUnit.MILLISECONDS);

            } else {
                event.getHelpCommand().sendHelp(this, event);
            }
        } else {
            event.getTextChannel()
                    .sendMessage(event.getMessageEditor().getMessage(MessageEditor.MessageType.NO_PERMISSION).build())
                    .queue();
        }
    }

    @Override
    public String[] labels() {
        return new String[] { "eval" };
    }

    @Override
    public String description() {
        return "commands.owner.eval.help.description";
    }

    @Override
    public String usage() {
        return "commands.owner.eval.help.usage";
    }
}