import random

import gradio as gr
import os

from src.olgen.ol_generator import VecOnlineGenerator
from src.olgen.olg_game import MarioOnlineGenGame
from src.olgen.olg_policy import RLGenPolicy
from src.smb.level import save_batch
from src.utils.filesys import getpath
from src.utils.img import make_img_sheet

import torch

device = 'cuda:0' if torch.cuda.is_available() else 'cpu'

def generate_and_play():
    path = 'models/example_policy'
    # Generate with example policy model
    N, L = 8, 10
    plc = RLGenPolicy.from_path(path, device)
    generator = VecOnlineGenerator(plc, g_device=device)
    fd, _ = os.path.split(getpath(path))
    os.makedirs(fd, exist_ok=True)

    lvls = generator.generate(N, L)
    # save_batch(lvls, f'{path}/samples.lvls')
    imgs = [lvl.to_img() for lvl in lvls]
    return imgs
    # make_img_sheet(imgs, 1, save_path=f'{path}/samples.png')

    # # Play with the example policy model
    # game = MarioOnlineGenGame(path)
    # game.play()


with gr.Blocks(title="NCERL Demo") as demo:
    gallery = gr.Gallery(
        label="Generated images", show_label=False, elem_id="gallery"
    , columns=[3], rows=[1], object_fit="contain", height="auto")
    btn = gr.Button("Generate levels", scale=0)

    btn.click(generate_and_play, None, gallery)

if __name__ == "__main__":
    demo.launch()