package world.bentobox.challenges.database.object;


import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;

import org.eclipse.jdt.annotation.NonNull;

import com.google.gson.annotations.Expose;

import world.bentobox.bentobox.api.logs.LogEntry;
import world.bentobox.bentobox.database.objects.DataObject;
import world.bentobox.bentobox.database.objects.adapters.Adapter;
import world.bentobox.bentobox.database.objects.adapters.LogEntryListAdapter;


/**
 * Stores the player's challenge situation
 * @author tastybento
 *
 */
public class ChallengesPlayerData implements DataObject
{
    /**
     * Constructor ChallengesPlayerData creates a new ChallengesPlayerData instance.
     */
    public ChallengesPlayerData()
    {
    }


    /**
     * Creates a player data entry
     *
     * @param uniqueId - the player's UUID in string format
     */
    public ChallengesPlayerData(String uniqueId)
    {
        this.uniqueId = uniqueId;
    }


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


    /**
     * This variable stores each player UUID as string.
     */
    @Expose
    private String uniqueId = "";

    /**
     * Challenge map, where key = unique challenge name and Value = number of times
     * completed
     */
    @Expose
    private Map<String, Integer> challengeStatus = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);

    /**
     * Map of challenges completion time where key is challenges unique id and value is
     * timestamp when challenge was completed last time.
     */
    @Expose
    private Map<String, Long> challengesTimestamp = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);

    /**
     * Set of Strings that contains all challenge levels that are completed.
     */
    @Expose
    private Set<String> levelsDone = new TreeSet<>(String.CASE_INSENSITIVE_ORDER);

    /**
     * Stores history about challenge completion.
     */
    @Adapter(LogEntryListAdapter.class)
    @Expose
    private List<LogEntry> history = new LinkedList<>();


    // ---------------------------------------------------------------------
    // Section: Getters
    // ---------------------------------------------------------------------


    /**
     * @return uniqueID
     * @see DataObject#getUniqueId()
     */
    @Override
    public String getUniqueId()
    {
        return uniqueId;
    }


    /**
     * This method returns the challengeStatus value.
     * @return the value of challengeStatus.
     */
    public Map<String, Integer> getChallengeStatus()
    {
        return challengeStatus;
    }


    /**
     * This method returns the challengesTimestamp value.
     * @return the value of challengesTimestamp.
     */
    public Map<String, Long> getChallengesTimestamp()
    {
        return challengesTimestamp;
    }


    /**
     * This method returns the levelsDone value.
     * @return the value of levelsDone.
     */
    public Set<String> getLevelsDone()
    {
        return levelsDone;
    }


    /**
     * This method returns the history object.
     * @return the history object.
     */
    public List<LogEntry> getHistory()
    {
        return history;
    }


    // ---------------------------------------------------------------------
    // Section: Setters
    // ---------------------------------------------------------------------


    /**
     * @param uniqueId - unique ID the uniqueId to set
     * @see DataObject#setUniqueId(String)
     */
    @Override
    public void setUniqueId(String uniqueId)
    {
        this.uniqueId = uniqueId;
    }


    /**
     * This method sets the challengeStatus value.
     * @param challengeStatus the challengeStatus new value.
     *
     */
    public void setChallengeStatus(Map<String, Integer> challengeStatus)
    {
        this.challengeStatus = challengeStatus;
    }


    /**
     * This method sets the challengesTimestamp value.
     * @param challengesTimestamp the challengesTimestamp new value.
     *
     */
    public void setChallengesTimestamp(Map<String, Long> challengesTimestamp)
    {
        this.challengesTimestamp = challengesTimestamp;
    }


    /**
     * This method sets the levelsDone value.
     * @param levelsDone the levelsDone new value.
     *
     */
    public void setLevelsDone(Set<String> levelsDone)
    {
        this.levelsDone = levelsDone;
    }


    /**
     * This method sets the history object value.
     * @param history the history object new value.
     */
    public void setHistory(List<LogEntry> history)
    {
        this.history = history;
    }


    // ---------------------------------------------------------------------
    // Section: Other Methods
    // ---------------------------------------------------------------------


    /**
     * Resets all challenges and levels in GameMode for this player
     *
     * @param gameMode GameMode which challenges must be reset.
     */
    public void reset(@NonNull String gameMode)
    {
        challengeStatus.keySet().removeIf(n -> n.regionMatches(true, 0, gameMode, 0, gameMode.length()));
        challengesTimestamp.keySet().removeIf(n -> n.regionMatches(true, 0, gameMode, 0, gameMode.length()));
        levelsDone.removeIf(n -> n.regionMatches(true, 0, gameMode, 0, gameMode.length()));
    }


    /**
     * Mark a challenge as having been completed. Will increment the number of times and
     * timestamp
     *
     * @param challengeName - unique challenge name
     */
    public void setChallengeDone(@NonNull String challengeName)
    {
        this.addChallengeDone(challengeName, 1);
    }


    /**
     * Mark a challenge as having been completed. Will increment the number of times and
     * timestamp
     *
     * @param challengeName - unique challenge name
     * @param times - how many new times should be added
     */
    public void addChallengeDone(@NonNull String challengeName, int times)
    {
        int newTimes = challengeStatus.getOrDefault(challengeName, 0) + times;
        challengeStatus.put(challengeName, newTimes);
        challengesTimestamp.put(challengeName, System.currentTimeMillis());
    }


    /**
     * Set the number of times a challenge has been done
     *
     * @param challengeName - unique challenge name
     * @param times - the number of times to set
     */
    public void setChallengeTimes(@NonNull String challengeName, @NonNull int times)
    {
        challengeStatus.put(challengeName, times);
        challengesTimestamp.put(challengeName, System.currentTimeMillis());
    }


    /**
     * Check if a challenge has been done
     *
     * @param challengeName - unique challenge name
     * @return true if done at least once
     */
    public boolean isChallengeDone(@NonNull String challengeName)
    {
        return this.getTimes(challengeName) > 0;
    }


    /**
     * Check how many times a challenge has been done
     *
     * @param challengeName - unique challenge name
     * @return - number of times
     */
    public int getTimes(@NonNull String challengeName)
    {
        return challengeStatus.getOrDefault(challengeName, 0);
    }


    /**
     * This method adds given level id to completed level set.
     * @param uniqueId from ChallengeLevel object.
     */
    public void addCompletedLevel(@NonNull String uniqueId)
    {
        this.levelsDone.add(uniqueId);
    }


    /**
     * This method returns if given level is done.
     * @param uniqueId  of ChallengeLevel object.
     * @return <code>true</code> if level is completed, otherwise <code>false</code>
     */
    public boolean isLevelDone(@NonNull String uniqueId)
    {
        return !this.levelsDone.isEmpty() && this.levelsDone.contains(uniqueId);
    }


    /**
     * This method adds given LogEntry to history.
     *
     * @param entry of type LogEntry
     */
    public void addHistoryRecord(@NonNull LogEntry entry)
    {
        this.history.add(entry);
    }


    /**
     * @see Object#hashCode()
     * @return object hashCode value.
     */
    @Override
    public int hashCode()
    {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((uniqueId == null) ? 0 : uniqueId.hashCode());
        return result;
    }


    /**
     * @see java.lang.Object#equals(java.lang.Object)
     * @param obj Other object.
     * @return boolean that indicate if objects are equals.
     */
    @Override
    public boolean equals(Object obj)
    {
        if (this == obj)
        {
            return true;
        }

        if (!(obj instanceof ChallengesPlayerData))
        {
            return false;
        }

        ChallengesPlayerData other = (ChallengesPlayerData) obj;

        if (uniqueId == null)
        {
            return other.uniqueId == null;
        }
        else
        {
            return uniqueId.equalsIgnoreCase(other.uniqueId);
        }
    }
}