package world.bentobox.challenges.handlers;


import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import world.bentobox.bentobox.api.addons.request.AddonRequestHandler;
import world.bentobox.challenges.ChallengesAddon;
import world.bentobox.challenges.database.object.ChallengeLevel;


/**
 * This handler returns Data map of requested level.
 */
public class LevelDataRequestHandler extends AddonRequestHandler
{
    /**
     * Constructor creates a new LevelDataRequestHandler instance.
     *
     * @param addon of type ChallengesAddon
     */
    public LevelDataRequestHandler(ChallengesAddon addon)
    {
        super("level-data");
        this.addon = addon;
    }


    /* (non-Javadoc)
     * @see world.bentobox.bentobox.api.addons.request.AddonRequestHandler#handle(java.util.Map)
     * @param metaData Required meta data.
     * @return Map that returns information about level
     */
    @Override
    public Object handle(Map<String, Object> metaData)
    {
        /*
            What we need in the metaData:
				0. "level-name" -> String
            What we will return:
				- Empty Map if level is not given or not found
				- Map that contains information about given level:
					- uniqueId: the same id that was passed to this handler.
			 		- name: String object of display name for level.
			 		- icon: ItemStack object that represents level.
			 		- order: Integer object of order number for given level.
			 		- message: String object that represents level unlock message.
			 		- world: String object that represents world name where level operates.

			 		- waiveramount: Integer object of waiver amount for given level.
			 		- challenges: List of strings that represents challenges that is owned by given level.
         */

        if (metaData == null ||
                metaData.isEmpty() ||
                metaData.get("level-name") == null ||
                !(metaData.get("level-name") instanceof String))
        {
            return Collections.emptyMap();
        }

        ChallengeLevel level = this.addon.getChallengesManager().getLevel((String) metaData.get("level-name"));

        Map<String, Object> levelDataMap;

        if (level == null)
        {
            levelDataMap = Collections.emptyMap();
        }
        else
        {
            levelDataMap = new HashMap<>();

            levelDataMap.put("uniqueId", level.getUniqueId());
            levelDataMap.put("name", level.getFriendlyName());
            levelDataMap.put("icon", level.getIcon());
            levelDataMap.put("order", level.getOrder());
            levelDataMap.put("message", level.getUnlockMessage());
            levelDataMap.put("world", level.getWorld());
            levelDataMap.put("challenges", level.getChallenges());
            levelDataMap.put("waiveramount", level.getWaiverAmount());
        }

        return levelDataMap;
    }


    // ---------------------------------------------------------------------
    // Section: Variables
    // ---------------------------------------------------------------------


    /**
     * Variable stores challenges addon.
     */
    private final ChallengesAddon addon;
}