import random

import pygame

from algorithms.bfs import graphsearch, State
from common.constants import *
from common.helpers import castle_neighbors
from logic.knights_queue import KnightsQueue
from logic.spawner import Spawner
from models.castle import Castle
from models.knight import Knight
from models.monster import Monster
from models.tile import Tile


class Level:
    def __init__(self, screen):
        self.screen = screen

        # sprite group setup
        self.sprites = pygame.sprite.Group()

        self.map = [[' ' for x in range(COLUMNS)] for y in range(ROWS)]

        self.list_knights_blue = []
        self.list_knights_red = []
        self.list_monsters = []
        self.list_castles = []

        self.knights_queue = None

    def create_map(self):
        self.generate_map()
        self.setup_base_tiles()
        self.setup_objects()
        self.knights_queue = KnightsQueue(self.list_knights_blue, self.list_knights_red)

    def generate_map(self):
        spawner = Spawner(self.map)
        spawner.spawn_where_possible(['w' for x in range(NBR_OF_WATER)])
        spawner.spawn_where_possible(['t' for x in range(NBR_OF_TREES)])

        spawner.spawn_in_area(['k_b' for x in range(4)], LEFT_KNIGHTS_SPAWN_FIRST_ROW, LEFT_KNIGHTS_SPAWN_FIRST_COL,
                              KNIGHTS_SPAWN_WIDTH, KNIGHTS_SPAWN_HEIGHT)
        spawner.spawn_in_area(['k_r' for x in range(4)], RIGHT_KNIGHTS_SPAWN_FIRST_ROW, RIGHT_KNIGHTS_SPAWN_FIRST_COL,
                              KNIGHTS_SPAWN_WIDTH, KNIGHTS_SPAWN_HEIGHT)

        spawner.spawn_in_area(['c'], CASTLE_SPAWN_FIRST_ROW, CASTLE_SPAWN_FIRST_COL, CASTLE_SPAWN_WIDTH,
                              CASTLE_SPAWN_HEIGHT, 2)

        spawner.spawn_where_possible(['m' for x in range(NBR_OF_MONSTERS)])

    def setup_base_tiles(self):
        textures = []
        for texture_path in TILES:
            converted_texture = pygame.image.load('resources/textures/' + texture_path).convert_alpha()
            converted_texture = pygame.transform.scale(converted_texture, (40, 40))
            textures.append((texture_path, converted_texture))

        for row_index, row in enumerate(self.map):
            for col_index, col in enumerate(row):

                # add base tiles, e.g. water, tree, grass
                if col == "w":
                    texture_index = 5
                    texture_surface = textures[texture_index][1]
                    Tile((col_index, row_index), texture_surface, self.sprites, 'w')
                elif col == "t":
                    texture_index = 6
                    texture_surface = textures[texture_index][1]
                    Tile((col_index, row_index), texture_surface, self.sprites, 't')
                else:
                    texture_index = random.randint(0, 4)
                    texture_surface = textures[texture_index][1]
                    Tile((col_index, row_index), texture_surface, self.sprites)

    def setup_objects(self):
        castle_count = 0  # TODO: find some smarter method to print castle

        for row_index, row in enumerate(self.map):
            print(row)
            for col_index, col in enumerate(row):

                # add objects, e.g. knights, monsters, castle
                if col == "k_b":
                    knight = Knight((col_index, row_index), self.sprites, "blue")
                    self.map[row_index][col_index] = knight
                    self.list_knights_blue.append(knight)
                elif col == "k_r":
                    knight = Knight((col_index, row_index), self.sprites, "red")
                    self.map[row_index][col_index] = knight
                    self.list_knights_red.append(knight)
                elif col == "m":
                    monster = Monster((col_index, row_index), self.sprites)
                    self.map[row_index][col_index] = monster
                    self.list_monsters.append(monster)
                elif col == "c":
                    castle_count += 1
                    if castle_count == 4:
                        castle = Castle((col_index, row_index), self.sprites)
                        self.map[row_index][col_index] = castle
                        self.list_castles.append(castle)

    def handle_turn(self):
        print("next turn")
        current_knight = self.knights_queue.dequeue_knight()
        knight_pos_x = current_knight.position[0]
        knight_pos_y = current_knight.position[1]
        state = State(knight_pos_y, knight_pos_x, current_knight.direction)

        castle_cords = (self.list_castles[0].position[0], self.list_castles[0].position[1])
        goal_list = castle_neighbors(self.map, castle_cords[0], castle_cords[1])  # list of castle neighbors
        action_list = graphsearch(state, self.map, goal_list)
        print(action_list)

        if len(action_list) == 0:
            return

        next_action = action_list.pop(0)
        if next_action == ACTION.get("rotate_left"):
            current_knight.rotate_left()
        elif next_action == ACTION.get("rotate_right"):
            current_knight.rotate_right()
        elif next_action == ACTION.get("go"):
            current_knight.step_forward()
            self.map[knight_pos_y][knight_pos_x] = ' '

            # update knight on map
            if current_knight.direction.name == 'UP':
                self.map[knight_pos_y - 1][knight_pos_x] = current_knight
            elif current_knight.direction.name == 'RIGHT':
                self.map[knight_pos_y][knight_pos_x + 1] = current_knight
            elif current_knight.direction.name == 'DOWN':
                self.map[knight_pos_y + 1][knight_pos_x] = current_knight
            elif current_knight.direction.name == 'LEFT':
                self.map[knight_pos_y][knight_pos_x - 1] = current_knight

    def update(self):
        bg_width = (GRID_CELL_PADDING + GRID_CELL_SIZE) * COLUMNS + BORDER_WIDTH
        bg_height = (GRID_CELL_PADDING + GRID_CELL_SIZE) * ROWS + BORDER_WIDTH
        pygame.draw.rect(self.screen, (255, 255, 255), pygame.Rect(5, 5, bg_width, bg_height), 0, BORDER_RADIUS)

        # update and draw the game
        self.sprites.draw(self.screen)