import os
import sys
import time

from abc import abstractmethod, ABC
import numpy as np
import torch

from configs.config import ConfigManager

class Runner(ABC):

    @abstractmethod
    def __init__(self, config_path):
        ConfigManager.load_config_with(config_path)
        ConfigManager.print_config()
        seed = ConfigManager.get("settings", "general", "seed")
        self.device = ConfigManager.get("settings", "general", "device")
        self.cuda_visible_devices = ConfigManager.get("settings","general","cuda_visible_devices")
        os.environ["CUDA_VISIBLE_DEVICES"] = self.cuda_visible_devices
        self.experiments_config = ConfigManager.get("settings", "experiment")
        self.experiment_path = os.path.join(self.experiments_config["root_dir"], self.experiments_config["name"])
        np.random.seed(seed)
        torch.manual_seed(seed)
        lt = time.localtime()
        self.file_name = f"{lt.tm_year}_{lt.tm_mon}_{lt.tm_mday}_{lt.tm_hour}h{lt.tm_min}m{lt.tm_sec}s"

    @abstractmethod
    def run(self):
        pass

    @abstractmethod
    def load_experiment(self, backup_name=None):
        if not os.path.exists(self.experiment_path):
            print(f"experiments environment {self.experiments_config['name']} does not exists.")
            self.create_experiment(backup_name)
        else:
            print(f"experiments environment {self.experiments_config['name']}")
            backup_config_dir = os.path.join(str(self.experiment_path), "configs")
            if not os.path.exists(backup_config_dir):
                os.makedirs(backup_config_dir)
            ConfigManager.backup_config_to(backup_config_dir, self.file_name, backup_name)

    @abstractmethod
    def create_experiment(self, backup_name=None):
        print("creating experiment: " + self.experiments_config["name"])
        os.makedirs(self.experiment_path)
        backup_config_dir = os.path.join(str(self.experiment_path), "configs")
        os.makedirs(backup_config_dir)
        ConfigManager.backup_config_to(backup_config_dir, self.file_name, backup_name)
        log_dir = os.path.join(str(self.experiment_path), "log")
        os.makedirs(log_dir)
        cache_dir = os.path.join(str(self.experiment_path), "cache")
        os.makedirs(cache_dir)

    def print_info(self):
        table_size = 80
        print("+" + "-" * table_size + "+")
        print(f"| Experiment <{self.experiments_config['name']}>")
        print("+" + "-" * table_size + "+")