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package mage.abilities.costs.common;

import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.UUID;
import mage.Constants.Outcome;
import mage.abilities.Ability;
import mage.abilities.costs.CostImpl;
import mage.abilities.costs.VariableCost;
import mage.choices.Choice;
import mage.choices.ChoiceImpl;
import mage.counters.Counter;
import mage.counters.CounterType;
import mage.filter.FilterMana;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.TargetPermanent;

/**
 *
 * @author LevelX
 */
public class RemoveVariableCountersTargetCost extends CostImpl<RemoveVariableCountersTargetCost> implements VariableCost {

    protected int amountPaid = 0;
    protected TargetPermanent target;
    protected String name;
    protected CounterType counterTypeToRemove;

    public RemoveVariableCountersTargetCost(TargetPermanent target) {
        this(target, null);
    }

    public RemoveVariableCountersTargetCost(TargetPermanent target, CounterType counterTypeToRemove) {
        this.target = target;
        this.counterTypeToRemove = counterTypeToRemove;
        text = setText();
    }

    public RemoveVariableCountersTargetCost(final RemoveVariableCountersTargetCost cost) {
        super(cost);
        this.target = cost.target.copy();
        this.name = cost.name;
    }

    @Override
    public boolean pay(Ability ability, Game game, UUID sourceId, UUID controllerId, boolean noMana) {
        paid = false;
        Player controller = game.getPlayer(controllerId);
        if (target.choose(Outcome.UnboostCreature, controllerId, sourceId, game)) {
            for (UUID targetId: (List<UUID>)target.getTargets()) {
                Permanent permanent = game.getPermanent(targetId);
                if (permanent != null) {
                    if (permanent.getCounters().size() > 0 && (counterTypeToRemove == null || permanent.getCounters().containsKey(counterTypeToRemove))) {
                        String counterName = null;
                        if (counterTypeToRemove != null) {
                            counterName = counterTypeToRemove.getName();
                        } else {
                            if (permanent.getCounters().size() > 1 && counterTypeToRemove == null) {
                                Choice choice = new ChoiceImpl(true);
                                Set<String> choices = new HashSet<String>();
                                for (Counter counter : permanent.getCounters().values()) {
                                    if (permanent.getCounters().getCount(counter.getName()) > 0) {
                                        choices.add(counter.getName());
                                    }
                                }
                                choice.setChoices(choices);
                                choice.setMessage("Choose a counter to remove from " + permanent.getName());
                                controller.choose(Outcome.UnboostCreature, choice, game);
                                counterName = choice.getChoice();
                            } else {
                                for (Counter counter : permanent.getCounters().values()) {
                                    if (counter.getCount() > 0) {
                                        counterName = counter.getName();
                                    }
                                }
                            }
                        }
                        if (counterName != null) {
                            int countersToRemove = 1;
                            if (permanent.getCounters().getCount(counterName) > 1) {
                                countersToRemove = controller.getAmount(1, permanent.getCounters().getCount(counterName),"Remove how many counters from " + permanent.getName(), game);
                            }
                            permanent.removeCounters(counterName, countersToRemove, game);
                            if (permanent.getCounters().getCount(counterName) == 0 ){
                                permanent.getCounters().removeCounter(counterName);
                            }
                            this.amountPaid += countersToRemove;
                            this.paid = true;
                            game.informPlayers(new StringBuilder(controller.getName()).append(" removes ").append(countersToRemove).append(" ").append(counterName).append(" counter from ").append(permanent.getName()).toString());
                        }
                    }
                }
            }
        }
        target.clearChosen();
        return paid;
    }

    @Override
    public int getAmount() {
        return amountPaid;
    }

    @Override
    public void setAmount(int amount) {
        amountPaid = amount;
    }

    @Override
    public void setFilter(FilterMana filter) {
    }

    @Override
    public boolean canPay(UUID sourceId, UUID controllerId, Game game) {
        return target.canChoose(controllerId, game);
    }

    private String setText() {
        // Remove one or more +1/+1 counters from among creatures you control
        StringBuilder sb = new StringBuilder("Remove one or more ");
        if (counterTypeToRemove != null) {
            sb.append(counterTypeToRemove.getName()).append(" ");
        }
        sb.append("counter from among ").append(target.getTargetName());
        return sb.toString();
    }

    @Override
    public RemoveVariableCountersTargetCost copy() {
        return new RemoveVariableCountersTargetCost(this);
    }
}
