# -*- coding: UTF-8 -*-

### Tangled Mind
### Author: Arthur 'Grizzly' Grisel-Davy

from glob import glob
import random

def fetch_rooms(path):
    """Fetch all the basic tiles asset from the path.
    Return a dictionary
    """

    wildcard = '*-*.png'
    filenames = glob(path+wildcard)
    print(f"Found {len(filenames)} rooms")

    assembly = {'T':[],
                'R':[],
                'D':[],
                'L':[],}

    for filename in filenames:
        label = filename.split("/")[-1].split('-')[0]
        if 'T' in label:
            assembly['D'].append((label,filename))
        if 'R' in label:
            assembly['L'].append((label,filename))
        if 'D' in label:
            assembly['T'].append((label,filename))
        if 'L' in label:
            assembly['R'].append((label,filename))

    return assembly



def map_generator(n):
    """Map generator generate a map with a main path of n rooms
    """

    room_side = 1000

    assembly = fetch_rooms('./maps/rooms/')
    #assembly = {'T/R/D/L':[(label1,path1),(label2,path2),...]}

    start_key = random.choice(list(assembly.keys()))
    start_label,start_room = random.choice(assembly[start_key])

    position = [0,0]
    carte = [(start_room,position)]

    # Select an arbitrary first direction of arrival
    dir_from = random.choice(start_label)
    current_label = start_label

    for i in range(n):
        # select the next direction, can't be the direction of arrival
        dir_next = random.choice(current_label.replace(dir_from,''))

        # Select the next room
        next_label,next_room = random.choice(assembly[dir_next])

        # Compute the position of the next tile
        if dir_next == 'T':
            next_position = [position[0],position[1]-room_side]
            dir_from = 'D'

        if dir_next == 'R':
            next_position = [position[0]+room_side,position[1]]
            dir_from = 'L'

        if dir_next == 'D':
            next_position = [position[0],position[1]+room_side]
            dir_from = 'T'

        if dir_next == 'L':
            next_position = [position[0]-room_side,position[1]]
            dir_from = 'R'

        # Build the map
        carte.append((next_room,next_position))

        # Update the label for next turn
        current_label = next_label
        position = next_position

    # Display the result:
    for room in carte:
        print(f"Room {room[0].split('/')[-1]} at position {room[1]}")

    print('Done.')