import pygame

from survival import esper, GameMap
from survival.components.direction_component import DirectionChangeComponent
from survival.components.input_component import InputComponent
from survival.components.moving_component import MovingComponent
from survival.components.pathfinding_component import PathfindingComponent
from survival.components.position_component import PositionComponent
from survival.components.resource_component import ResourceComponent


class InputSystem(esper.Processor):
    def __init__(self, camera, game_map: GameMap):
        self.camera = camera
        self.game_map = game_map

    def process(self, dt):
        for ent, (inp, pos) in self.world.get_components(InputComponent, PositionComponent):
            keys = pygame.key.get_pressed()
            mouse = pygame.mouse.get_pressed(3)
            if mouse[0] == 1:
                pos = pygame.mouse.get_pos()
                pos = (pos[0] - self.camera.camera.left, pos[1] - self.camera.camera.top)
                if not self.world.has_component(ent, PathfindingComponent):
                    target_ent = self.game_map.get_entity([int(pos[0] / 32), int(pos[1]/ 32)])
                    if target_ent is not None and self.world.has_component(target_ent, ResourceComponent):
                        self.world.add_component(ent, PathfindingComponent(pos))
                    else:
                        self.world.add_component(ent, PathfindingComponent(pos))

            if self.world.has_component(ent, MovingComponent):
                continue
            if keys[pygame.K_LEFT]:
                if not self.world.has_component(ent, DirectionChangeComponent):
                    self.world.add_component(ent, DirectionChangeComponent(pos.rotate_left()))
            elif keys[pygame.K_RIGHT]:
                if not self.world.has_component(ent, DirectionChangeComponent):
                    self.world.add_component(ent, DirectionChangeComponent(pos.rotate_right()))
            elif keys[pygame.K_UP]:
                self.world.add_component(ent, MovingComponent())