/*
 * Forge: Play Magic: the Gathering.
 * Copyright (C) 2011  Forge Team
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package forge.card.cost;

import com.google.common.base.Strings;

import forge.Card;
import forge.FThreads;
import forge.card.ability.AbilityUtils;
import forge.card.spellability.SpellAbility;
import forge.control.input.InputPayManaOfCostPayment;
import forge.control.input.InputPayManaX;
import forge.control.input.InputPayment;
import forge.game.GameState;
import forge.game.ai.ComputerUtilMana;
import forge.game.player.AIPlayer;
import forge.game.player.Player;

/**
 * The mana component of any spell or ability cost
 */
public class CostPartMana extends CostPart {
    // "Leftover"
    private String mana = "";
    private int amountX = 0;
    private String adjustedMana = "";
    private boolean xCantBe0 = false;

    /**
     * Gets the mana.
     * 
     * @return the mana
     */
    public final String getMana() {
        // Only used for Human to pay for non-X cost first
        return this.mana;
    }

    /**
     * Sets the mana.
     * 
     * @param sCost
     *            the new mana
     */
    public final void setMana(final String sCost) {
        this.mana = sCost;
    }

    /**
     * Checks for no x mana cost.
     * 
     * @return true, if successful
     */
    public final boolean hasNoXManaCost() {
        return this.amountX == 0;
    }

    /**
     * Gets the x mana.
     * 
     * @return the x mana
     */
    public final int getXMana() {
        return this.amountX;
    }

    /**
     * Sets the x mana.
     * 
     * @param xCost
     *            the new x mana
     */
    public final void setXMana(final int xCost) {
        this.amountX = xCost;
    }

    /**
     * Gets the adjusted mana.
     * 
     * @return the adjusted mana
     */
    public final String getAdjustedMana() {
        return this.adjustedMana;
    }

    /**
     * Sets the adjusted mana.
     * 
     * @param adjustedMana
     *            the new adjusted mana
     */
    public final void setAdjustedMana(final String adjustedMana) {
        this.adjustedMana = adjustedMana;
    }

    /**
     * @return the xCantBe0
     */
    public boolean canXbe0() {
        return !xCantBe0;
    }

    /**
     * @param xCantBe00 the xCantBe0 to set
     */
    public void setxCantBe0(boolean xCantBe0) {
        this.xCantBe0 = xCantBe0; // TODO: Add 0 to parameter's name.
    }

    /**
     * Gets the mana to pay.
     * 
     * @return the mana to pay
     */
    public final String getManaToPay() {
        // Only used for Human to pay for non-X cost first
        if (!this.adjustedMana.equals("")) {
            return this.adjustedMana;
        }

        return this.mana;
    }
    
    @Override
    public boolean isReusable() { return true; }

    @Override
    public boolean isUndoable() { return true; }
    
    /**
     * Instantiates a new cost mana.
     * 
     * @param mana
     *            the mana
     * @param amount
     *            the amount
     * @param xCantBe0 TODO
     */
    public CostPartMana(final String mana, final int amount, boolean xCantBe0) {
        this.mana = mana.trim();
        this.amountX = amount;
        this.setxCantBe0(xCantBe0);
    }

    /*
     * (non-Javadoc)
     * 
     * @see forge.card.cost.CostPart#toString()
     */
    @Override
    public final String toString() {
        final StringBuilder sb = new StringBuilder();

        sb.append(Strings.repeat("X ", this.amountX));
        if ( sb.length() == 0 || mana != "0" )
            sb.append(this.mana);

        return sb.toString().trim();
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * forge.card.cost.CostPart#canPay(forge.card.spellability.SpellAbility,
     * forge.Card, forge.Player, forge.card.cost.Cost)
     */
    @Override
    public final boolean canPay(final SpellAbility ability, final Card source, final Player activator, final Cost cost, final GameState game) {
        // For now, this will always return true. But this should probably be
        // checked at some point
        return true;
    }

    /*
     * (non-Javadoc)
     * 
     * @see forge.card.cost.CostPart#payAI(forge.card.spellability.SpellAbility,
     * forge.Card, forge.card.cost.Cost_Payment)
     */
    @Override
    public final void payAI(final AIPlayer ai, final SpellAbility ability, final Card source, final CostPayment payment, final GameState game) {
        ComputerUtilMana.payManaCost(ai, ability);
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * forge.card.cost.CostPart#payHuman(forge.card.spellability.SpellAbility,
     * forge.Card, forge.card.cost.Cost_Payment)
     */
    @Override
    public final boolean payHuman(final SpellAbility ability, final GameState game) {
        final Card source = ability.getSourceCard();
        int manaToAdd = 0;
        if (!this.hasNoXManaCost()) {
            // if X cost is a defined value, other than xPaid
            if (!ability.getSVar("X").equals("Count$xPaid")) {
                // this currently only works for things about Targeted object
                manaToAdd = AbilityUtils.calculateAmount(source, "X", ability) * this.getXMana();
            }
        }
        

        if (!"0".equals(this.getManaToPay()) || manaToAdd > 0) {
            InputPayment inpPayment = new InputPayManaOfCostPayment(game, this, ability, manaToAdd);
            FThreads.setInputAndWait(inpPayment);
            if(!inpPayment.isPaid())
                return false;
        } 
        if (this.getXMana() > 0) {
            source.setXManaCostPaid(0);
            InputPayment inpPayment = new InputPayManaX(game, ability, this);
            FThreads.setInputAndWait(inpPayment);
            if(!inpPayment.isPaid())
                return false;
        }
        return true;

    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * forge.card.cost.CostPart#decideAIPayment(forge.card.spellability.SpellAbility
     * , forge.Card, forge.card.cost.Cost_Payment)
     */
    @Override
    public final boolean decideAIPayment(final AIPlayer ai, final SpellAbility ability, final Card source, final CostPayment payment) {
        return true;
    }

    // Inputs

}