import pygame
import random
from src.settings import (
    ITEM_SPAWN_INTERVAL, ITEM_SHOPPING_TIMER, ITEM_SIZE,
    COLOR_HP_BAR_YELLOW, COLOR_HP_BAR_BG
)


# try 50 times to find a free position to spawn item
def _random_position(room_rect, blocked_rects):
    attempts = 0
    max_attempts = 50

    while attempts < max_attempts:
        # generate random x/y coordinates with room boundaries
        # * 2 to have a margin to walls
        x = random.randint(room_rect.left + ITEM_SIZE, room_rect.right - ITEM_SIZE * 2)
        y = random.randint(room_rect.top + ITEM_SIZE, room_rect.bottom - ITEM_SIZE * 2)

        # create a rect at this position for testing collision
        test_rect = pygame.Rect(x, y, ITEM_SIZE, ITEM_SIZE)
        blocked = False
        for b in blocked_rects:
            if test_rect.colliderect(b):
                blocked = True
                break

        # if position is not blocked, return the position
        if not blocked:
            return x, y

        attempts += 1
        
        # no spot after 50 attempts -> return
    return None

# remove expired items
def update(self, room_rect, blocked_rects):
    now = pygame.time.get_ticks()

    remaining_items = []

    for item in self.items:
        if item.is_expired() == False:
            remaining_items.append(item)

        # replace the old list with the new temp_list
        self.items = remaining_items