/** 
 * This class represents the Control within our game.
 */

public class Control {

    /**
     * CS 101/101E students: Add your comments here
     */
    public static void printLocationCommands() {
        System.out.println ("Valid commands are (and 'x' means not yet implemented):");
        System.out.println ("\tmove (to move to another location)");
        System.out.println ("\tdepot (to enter the depot, if present)");
        System.out.println ("\tworldmap (to print out the map)");
        System.out.println ("\tinventory (to show your inventory)");
        System.out.println ("\trest (to rest for a specified number of days)");
        System.out.println ("x\thunt (to forage/hunt for food)");
        System.out.println ("x\ttrade (to attempt to trade)");
        System.out.println ("x\tpace (change pace)");
        System.out.println ("x\tfood (change food rations)");
        System.out.println ("\tcheck (check on your party's status)");
        System.out.println ("\txcheat (enable cheat mode)");
        System.out.println ("\tquit (to leave the game)");
        System.out.println ("You can abbreviate any command by its first letter");
    }
    
    /**
     * CS 101/101E students: Add your comments here
     */	
    public static void possiblyEndGame() {
    	// if people are alive and the player is not at the destination, don't do anything
    	if ( Game.player.getParty().isAnybodyAlive() &&
    		 ( (Game.player.getLocation().getPosRow() != Game.FINISH_ROW_COORD) || 
    		   (Game.player.getLocation().getPosCol() != Game.FINISH_COL_COORD) ) )
    		return;
    	
    	if ( Game.player.getParty().isAnybodyAlive() ) {
	    	System.out.println ("\nYou reached your destination!");
		    System.out.println ("\nYou are at: " + Game.player.getLocation()); 
		    System.out.println ("You have $" 
		    	+ Game.style.format(Game.player.getInventory().getMoney()) + " on hand");
		    System.out.println ("You have travelled " 
		    	+ Game.style.format(Game.player.getTotalDistanceTraveled()) + " " 
		    	+ Game.DISTANCE_UNIT + " over " + Game.style.format(Game.player.getTotalTimeTaken()) + " days");
		    Game.player.getParty().printPartyStatus();
    	} else {
    		System.out.println ("I'm sorry, all the members in your party have died.  Game over.");
    	}
		System.exit(0);
    }
    
    /** 
     * CS 101/101E students: Add your comments here. 
     * 
     * @param movementTime The amount of time to move.
     * @param numOxen The number of propulsion items (oxen, rockets, etc.)
     * @param isMoving boolean flag to indicate whether or not the Vehicle is moving
	 */	
	
    public static void advanceTurn (double movementTime, int numOxen, boolean isMoving) {
    	System.out.println ("advanceTurn() called");
    	
    	// update total distance traveled if the vehicle is moving
        if ( isMoving )
        	Game.player.setTotalDistanceTraveled (Game.player.getTotalDistanceTraveled() 
        		+ Game.DISTANCE_BETWEEN_SQUARES);
        
        // handle speed of movement
        double timeTaken = 1.0/(1.0 - 1.0/(numOxen+1)) 
        	* Game.DISTANCE_BETWEEN_SQUARES 
        	* movementTime * Game.OXEN_SPEED_FACTOR;
        System.out.println ("With " + numOxen + " " + Descriptions.getPropulsionName().toLowerCase() 
        	+ ", it takes you " + Game.style.format(timeTaken) + " days to move one square." + movementTime );
        Game.player.setTotalTimeTaken (Game.player.getTotalTimeTaken() + timeTaken);
        
        // handle eating of food
        int foodLeft = Game.player.getInventory().getFood();
        int foodNeeded = Game.FOOD_CONSUMPTION_RATE * Game.player.getParty().getNumberAlive();
        Game.player.getInventory().setFood(foodLeft-foodNeeded);
        boolean starving = false;
        if ( foodNeeded > foodLeft ) {
        	System.out.println ("You don't have enough food!  Your party is starving.");
        	Game.player.getParty().starve();
        	starving = true;
        }
        
        // check for health problems
        if ( isMoving && !Game.cheatModeEnabled ) {
        	if ( Game.random.nextDouble() < Game.HEALTH_PROBLEM_CHANCE ) {
        		Person whoIsSick = Game.player.getParty().pickRandomPerson();
        		String affliction = Descriptions.generateRandomHealthEvent();
        		int affectedAmount = Descriptions.getCorrespondingHealthChange(affliction);
        		whoIsSick.changeHealth(affectedAmount);
        		System.out.println ("\n" + whoIsSick + " " + affliction + "\n");
        	}
        } else if ( !starving ) {
        	 for ( int i = 0; i < Game.player.getParty().getCurrentPartySize(); i++ )
        		if ( Game.player.getParty().getPerson(i) != null )
        			(Game.player.getParty().getPerson(i)).changeHealth((int) movementTime);
        }
        
    }
    
    /** 
     * Add your comments here
     */
    public static void takeTurn(){
    	
		while(true){
		    System.out.println ("\nYou are at: " + Game.player.getLocation()); 
		    System.out.println ("You have $" + Game.style.format(Game.player.getInventory().getMoney()) + " on hand");
		    System.out.println ("You have travelled " + Game.style.format(Game.player.getTotalDistanceTraveled()) + " " +
		    		Game.DISTANCE_UNIT + " over " + Game.style.format(Game.player.getTotalTimeTaken()) + " days");
		    printLocationCommands();
		    int command = Parser.parse();
	    	System.out.println();
		    switch(command){
		    case Parser.MOVE: 
		    	Game.player.move();
				break;
		    case Parser.WORLDMAP:
				MapPrinter.printMap();
				break;
		    case Parser.DEPOT: 
				if ( Game.player.getLocation().getDepot() == null )
					System.out.println ("There is no depot here!");
				else
					Game.player.getLocation().getDepot().enterDepot(Game.player);
				break;
		    case Parser.INVENTORY:
		    	Game.player.getInventory().printInventory(1.0);
				break;
		    case Parser.QUIT:
				System.out.println ("\nYou ended the game with $" + Game.style.format(Game.player.getInventory().getMoney()));
				System.out.println ("Goodbye!");
				return;
		    case Parser.REST:
		    	System.out.println ("How many days would you like to rest?");
		    	int restAmount = Parser.getInteger();
		    	advanceTurn(restAmount, Game.player.getInventory().getOxen(), false);
		    	break;
		    	
		    case Parser.HUNT:
		    	// FALL THRU
		    case Parser.TRADE:
		    	// FALL THRU
		    case Parser.PACE:
		    	// FALL THRU
		    case Parser.FOOD:
		    	System.out.println ("That command not yet implemented.");
		    	break;
		    	
		    case Parser.CHECK:
		    	Game.player.getParty().printPartyStatus();
		    	break;
		    case Parser.XCHEAT:
		    	Game.cheatModeEnabled = true;
		    	Game.player.getInventory().setMoney(1000000);
		    	Game.player.getInventory().setFood(1000000);
		    	Game.player.getInventory().setAmmunition(1000000);
		    	System.out.println ("Cheat mode enabled.");
		    	break;
		    
		    default:
				System.out.println ("I don't understand that input.  Try again");
				break;
		    }
		}
		
    }


}