"""
NOTE: the pendulum_cont_disc in file name means we use the Pendulum-v1 continuous env
with manually discretized action space. That is to say, the final action space is discrete.
"""
from easydict import EasyDict

# ==============================================================
# begin of the most frequently changed config specified by the user
# ==============================================================
collector_env_num = 8
n_episode = 8
evaluator_env_num = 3
num_simulations = 50
update_per_collect = 200
batch_size = 256
max_env_step = int(1e6)
reanalyze_ratio = 0
# ==============================================================
# end of the most frequently changed config specified by the user
# ==============================================================

pendulum_disc_muzero_config = dict(
    exp_name=f'data_muzero/pendulum_disc_muzero_ns{num_simulations}_upc{update_per_collect}_rer{reanalyze_ratio}_seed0',
    env=dict(
        env_id='Pendulum-v1',
        continuous=False,
        manually_discretization=True,
        each_dim_disc_size=11,
        collector_env_num=collector_env_num,
        evaluator_env_num=evaluator_env_num,
        n_evaluator_episode=evaluator_env_num,
        manager=dict(shared_memory=False, ),
    ),
    policy=dict(
        model=dict(
            observation_shape=3,
            action_space_size=11,
            model_type='mlp', 
            lstm_hidden_size=128,
            latent_state_dim=128,
            self_supervised_learning_loss=True,  # NOTE: default is False.
        ),
        # (str) The path of the pretrained model. If None, the model will be initialized by the default model.
        model_path=None,
        cuda=True,
        env_type='not_board_games',
        game_segment_length=50,
        update_per_collect=update_per_collect,
        batch_size=batch_size,
        optim_type='Adam',
        piecewise_decay_lr_scheduler=False,
        learning_rate=0.003,
        ssl_loss_weight=2,  # NOTE: default is 0.
        num_simulations=num_simulations,
        reanalyze_ratio=reanalyze_ratio,
        n_episode=n_episode,
        eval_freq=int(2e3),
        replay_buffer_size=int(1e6),  # the size/capacity of replay_buffer, in the terms of transitions.
        collector_env_num=collector_env_num,
        evaluator_env_num=evaluator_env_num,
    ),
)

pendulum_disc_muzero_config = EasyDict(pendulum_disc_muzero_config)
main_config = pendulum_disc_muzero_config

pendulum_disc_muzero_create_config = dict(
    env=dict(
        type='pendulum_lightzero',
        import_names=['zoo.classic_control.pendulum.envs.pendulum_lightzero_env'],
    ),
    env_manager=dict(type='subprocess'),
    policy=dict(
        type='muzero',
        import_names=['lzero.policy.muzero'],
    ),
)
pendulum_disc_muzero_create_config = EasyDict(pendulum_disc_muzero_create_config)
create_config = pendulum_disc_muzero_create_config

if __name__ == "__main__":
    # Users can use different train entry by specifying the entry_type.
    entry_type = "train_muzero"  # options={"train_muzero", "train_muzero_with_gym_env"}

    if entry_type == "train_muzero":
        from lzero.entry import train_muzero
    elif entry_type == "train_muzero_with_gym_env":
        """
        The ``train_muzero_with_gym_env`` entry means that the environment used in the training process is generated by wrapping the original gym environment with LightZeroEnvWrapper.
        Users can refer to lzero/envs/wrappers for more details.
        """
        from lzero.entry import train_muzero_with_gym_env as train_muzero

    train_muzero([main_config, create_config], seed=0, model_path=main_config.policy.model_path, max_env_step=max_env_step)
