import pygame
from src.components.GridBoard import GridBoard
from src.managers.DrawableCollection import DrawableCollection
from src.components.Waiter import Waiter
from src.components.Table import Table


#create screen consts
CellSize     = 50 #pixel size of 1 square cell in the grid
GridCountX   = 15 #number of columns in grid
GridCountY   = 11 #number of rows in grid
ScreenWidth  = CellSize * GridCountX #screen width in pixels
ScreenHeight = CellSize * GridCountY #screen height in pixels

#initialize background
gridBoard = GridBoard(ScreenWidth, ScreenHeight, CellSize)

#initialize drawable objects manager
drawableManager = DrawableCollection()

#initialize waiter component
waiter = Waiter(0, 0, 0, GridCountX - 1, 0, GridCountY - 1, CellSize)

#initialize a number of tables given in range
for i in range(1, 15):
    table = Table(0, GridCountX - 1, 0, GridCountY - 1, CellSize)
    drawableManager.generatePosition(table)
    drawableManager.add(table)

#main loop
doRepaint = True
running = True
while running:

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

        #handles keyboard events
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                #checks if new waiter's position to the left is not occupied by other object
                if drawableManager.isPositionAvailable(waiter.getX() - 1, waiter.getY()):
                    waiter.moveLeft()
            if event.key == pygame.K_RIGHT:
                # checks if new waiter's position to the right is not occupied by other object
                if drawableManager.isPositionAvailable(waiter.getX() + 1, waiter.getY()):
                    waiter.moveRight()
            if event.key == pygame.K_UP:
                # checks if new waiter's position up is not occupied by other object
                if drawableManager.isPositionAvailable(waiter.getX(), waiter.getY() - 1):
                    waiter.moveUp()
            if event.key == pygame.K_DOWN:
                # checks if new waiter's position down is not occupied by other object
                if drawableManager.isPositionAvailable(waiter.getX(), waiter.getY() + 1):
                    waiter.moveDown()
            doRepaint = True

        # repaints all objects to the screen
        #is set only on initial paint or after keyboard event
        if doRepaint:
            gridBoard.reinitialize()
            gridBoard.draw(drawableManager)
            gridBoard.draw(waiter)
            gridBoard.udpdate()
            doRepaint = False