package ch.asynk.tankontank.game;

import java.util.Random;
import java.util.List;
import java.util.ArrayList;

import ch.asynk.tankontank.TankOnTank;
import ch.asynk.tankontank.engine.Pawn;

public class Player
{
    private static final float MOVE_TIME = 0.4f;

    private static Random rand = new Random();

    private int turn;
    private int apSpent;
    private int actionPoints;
    private boolean deploymentDone;

    public Army army;
    public ArrayList<Unit> units;
    public ArrayList<Unit> casualties;
    public ArrayList<Unit> reinforcement;
    public ArrayList<Unit> escaped;

    public int actionCount;
    public int lostEngagementCount;
    public int wonEngagementCount;

    public Player(final TankOnTank game, Army army, int n)
    {
        this.army = army;
        this.units = new ArrayList<Unit>(n);
        this.casualties = new ArrayList<Unit>(n);
        this.reinforcement = new ArrayList<Unit>(n);
        this.escaped = new ArrayList<Unit>(n);
        this.turn = 0;
        this.apSpent = 0;
        this.actionPoints = 0;
        this.deploymentDone = false;
        this.actionCount = 0;
        this.lostEngagementCount = 0;
        this.wonEngagementCount = 0;
    }

    public String getName()
    {
        return army.toString();
    }

    public String toString()
    {
        return army + " AP: " + actionPoints +
            " units:" + units.size() + " casualties:" + casualties.size();
    }

    public String getStats()
    {
        return String.format("%s\n%4d\n%4d\n%4d\n%4d\n%4d", getName(), actionCount, unitsLeft(), casualties.size(), wonEngagementCount, lostEngagementCount);
    }

    public boolean is(Army army)
    {
        return (this.army == army);
    }

    public boolean isEnemy(Unit unit)
    {
        return unit.isEnemy(army);
    }

    public boolean isEnemy(Army other)
    {
        return army.isEnemy(other);
    }

   @SuppressWarnings("unchecked")
    public List<Pawn> unitsAsPawns()
    {
        return (List) units;
    }

    public int unitsLeft()
    {
        return (units.size() + reinforcement.size());
    }

    public int reinforcement()
    {
        return reinforcement.size();
    }

    public int casualties()
    {
        return casualties.size();
    }

    public int escaped()
    {
        return escaped.size();
    }

    public void addUnit(Unit unit)
    {
        units.add(unit);
    }

    public void addReinforcement(Unit unit)
    {
        reinforcement.add(unit);
    }

    public void unitEntry(Unit unit)
    {
        reinforcement.remove(unit);
        units.add(unit);
    }

    public void revertUnitEntry(Unit unit)
    {
        units.remove(unit);
        reinforcement.add(unit);
    }

    public void casualty(Unit unit)
    {
        units.remove(unit);
        casualties.add(unit);
    }

    public void unitEscape(Unit unit)
    {
        units.remove(unit);
        escaped.add(unit);
    }

    public int getAp()
    {
        return ((apSpent < actionPoints) ? (apSpent + 1) : apSpent);
    }

    public int getTurnDone()
    {
        return turn;
    }

    public int getCurrentTurn()
    {
        return (turn + 1);
    }

    public boolean apExhausted()
    {
        return (apSpent == actionPoints);
    }

    public boolean isDeploymentDone()
    {
        return (deploymentDone || (reinforcement.size() == 0));
    }

    public void burnDownOneAp()
    {
        apSpent += 1;
        actionCount += 1;
        if (apSpent > actionPoints) TankOnTank.debug("ERROR: spent too much AP, please report");
    }

    public void turnEnd()
    {
        if (deploymentDone)
            turn += 1;
        else
            deploymentDone = (reinforcement.size() == 0);
    }

    public void turnStart()
    {
        if (isDeploymentDone()) {
            for (Unit unit : units)
                unit.reset();
            computeActionPoints();
        }
    }

    public int d6()
    {
        return rand.nextInt(6) + 1;
    }

    private void computeActionPoints()
    {
        this.actionPoints = 2;
        if (d6() > 2) {
            this.actionPoints += 1;
            if (d6() > 3)
                this.actionPoints += 1;
        }
        apSpent = 0;
    }

    public boolean canPromote(Unit unit)
    {
        if (unit.isHq()) return false;
        for (Unit p: casualties)
            if (p.isHqOf(unit)) return true;
        return false;
    }

    public boolean promote(Unit unit)
    {
        for (Unit p: casualties) {
            if (p.isHqOf(unit)) {
                unit.promote();
                p.degrade();
                return true;
            }
        }

        return false;
    }
}