import project_constants as const
import json


# Class of our agent, initialization of it
# movement functions (those defined by the 'go_' prefix are not meant to actually move our agent, they just return some
# values that are later used by another function called 'is_valid_move' (which is defined in Minefield));

class Agent:
    def __init__(self, json_path):
        with open(json_path) as json_data:
            data = json.load(json_data)
        self.row, self.column = data["agents_initial_state"]["position"].split(",")
        self.position = [int(self.row), int(self.column)]
        # self.direction = const.Direction()
        self.direction = const.Direction(data["agents_initial_state"]["direction"])

    def rotate_left(self):
        self.direction = self.direction.previous()

    def rotate_right(self):
        self.direction = self.direction.next()

    def go(self):
        if self.direction == const.Direction.RIGHT:
            temp = self.go_right()
            self.position[1] = temp[1]
        elif self.direction == const.Direction.LEFT:
            temp = self.go_left()
            self.position[1] = temp[1]
        elif self.direction == const.Direction.UP:
            temp = self.go_up()
            self.position[0] = temp[0]
        elif self.direction == const.Direction.DOWN:
            temp = self.go_down()
            self.position[0] = temp[0]

    def go_right(self):

        return self.position[0], self.position[1] + 1

    def go_left(self):

        return self.position[0], self.position[1] - 1

    def go_up(self):

        return self.position[0] - 1, self.position[1]

    def go_down(self):

        return self.position[0] + 1, self.position[1]