/*
 * GenericScoreCard.cs
 * Authors:     August Zinsser
 * 
 * Copyright Matthew Belmonte 2007
 */


using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using Microsoft.Xna.Framework;


namespace tAC_Engine
{
    /// <summary>
    /// Games should use this class to store the score and then pass it along to the ScoreSummary class
    /// to display the game's final score and optionally transfer resources to another game (for example, 
    /// a minigame passing resources along to a main game).
    /// </summary>
    public class GenericScoreCard
    {
        protected Dictionary<string, int> mResourcesGathered; // Holds the raw score data
        


        /// <summary>
        /// Create a new score card.
        /// </summary>
        public GenericScoreCard()
        {
            mResourcesGathered = new Dictionary<string, int>();
        }


        /// <summary>
        /// Increases the gathered resource amount (opposite of Lose)
        /// </summary>
        /// <param name="resourceType">The type of resource to add</param>
        /// <param name="amount">The amount of resource to add</param>
        public void Gather(string resourceType, int amount)
        {
            if (mResourcesGathered.ContainsKey(resourceType))
            {
                mResourcesGathered[resourceType] += amount;
            }
            else
            {
                mResourcesGathered.Add(resourceType, amount);
            }
        }


        /// <summary>
        /// Attempts to decrease the lost resource amount (opposite of Gather)
        /// </summary>
        /// <returns>True if successfully deducted resource, false otherwise</returns>
        public bool Lose(string resourceType, int amount)
        {
            if (mResourcesGathered.ContainsKey(resourceType) &&
                mResourcesGathered[resourceType] >= amount)
            {
                mResourcesGathered[resourceType] -= amount;
                return true;
            }

            return false;
        }


        /// <summary>
        /// Inquire about a specific resource gathered so far
        /// </summary>
        /// <param name="resourceType">Type of resource</param>
        /// <returns>The amount of that resouce collected</returns>
        public int QueryResource(string resourceType)
        {
            if (mResourcesGathered.ContainsKey(resourceType))
            {
                return mResourcesGathered[resourceType];
            }
            else
            {
                return 0;
            }
        }


        /// <summary>
        /// Transfer resources from this scorecard to the game
        /// </summary>
        public void CashOut(GenericGame recipientGame)
        {
            if (recipientGame != null)
            {
                List<string> keys = new List<string>();

                foreach (KeyValuePair<string, int> kvp in mResourcesGathered)
                {
                    recipientGame.IncreaseResource(kvp.Key, kvp.Value);
                    keys.Add(kvp.Key);
                }
                foreach (string key in keys)
                {
                    mResourcesGathered[key] = 0;
                }
            }
        }
    }
}