"""
Faces:
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/xander_2.zip
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/xander_5.zip
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/xander_best.zip
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/steel.zip

Objects:
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/banny_all.zip
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/banny_best.zip
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/koji_color.zip
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/plantoid_imgs.zip

Styles:
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/does.zip
https://storage.googleapis.com/public-assets-xander/A_workbox/lora_training_sets/clipx_200.zip

"""

import random, os, ast, json, shutil
from itertools import product
import time
from tqdm import tqdm

random.seed(int(1000*time.time()))

def hamming_distance(dict1, dict2):
    distance = 0
    for key in dict1.keys():
        if dict1[key] != dict2.get(key, None):
            distance += 1
    return distance

#######################################################################################

# Setup the base experiment config:
exp_name             = "gridsearch_sdxl"
caption_prefix       = ""
mask_target_prompts  = ""
n_exp                = 200  # how many random experiment settings to generate
min_hamming_distance = 2   # min_n_params that have to be different from any previous experiment to be scheduled

output_sh_path = f"gridsearch_configs/{exp_name}.sh"

# Define training hyperparameters and their possible values
# The params are sampled stochastically, so if you want to use a specific value more often, just put it in multiple times

hyperparameters = {
    "output_dir": [f"lora_models/{exp_name}"],
    "sd_model_version": ["sdxl"],
    "lora_training_urls": [
        "/home/rednax/SSD2TB/Github_repos/diffusion_trainer/xander/datasets/people/jana_3"
    ],
    "concept_mode": ['face'],
    "seed": [0],
    "resolution": [512],
    "validation_img_size": [[1024, 1024]],
    "train_batch_size": [4],
    "n_sample_imgs": [6],
    "max_train_steps": [400],
    "checkpointing_steps": [100],
    "gradient_accumulation_steps": [1],
    "prodigy_d_coef": [0.4, 0.8],
    "cond_reg_w": [0.0, 0.5e-5],
    "tok_cond_reg_w": [0.0, 1.0e-5],
    "n_tokens": [1,2,3],
    "ti_lr": [0.001, 0.0001],
    "ti_weight_decay": [0.0002],
    "lora_weight_decay": [0.001],
    "l1_penalty": [0.1],
    "off_ratio_power": [0.05, 0.0],
    "hard_pivot": ['false', 'true'],
    "token_embedding_lr_warmup_steps": [0,50],
    "snr_gamma": [5.0, 0.0],
    "lora_rank": [12],
    "use_dora": ['true', 'false'],
    "caption_model": ["blip"],
    "augment_imgs_up_to_n": [20],
    "verbose": ['true'],
    "debug": ['true']
}

#######################################################################################

# Create a set to hold the combinations that have already been run
scheduled_experiments = set()

# if config_output_dir exists, remove it:
config_output_dir = f"gridsearch_configs/{exp_name}"
shutil.rmtree(config_output_dir, ignore_errors=True)
os.makedirs(config_output_dir, exist_ok=True)

# Open the shell script file
try_sampling_n_times = 200
for exp_index in tqdm(range(n_exp)):  # number of combinations you want to generate
    resamples, combination = 0, None

    while resamples < try_sampling_n_times:
        experiment_settings = {name: random.choice(values) for name, values in hyperparameters.items()}
        resamples += 1

        min_distance = float('inf')
        for str_experiment_settings in scheduled_experiments:
            existing_experiment_settings = dict(sorted(ast.literal_eval(str_experiment_settings)))
            distance = hamming_distance(experiment_settings, existing_experiment_settings)
            min_distance = min(min_distance, distance)

        if min_distance >= min_hamming_distance:
            str_experiment_settings = str(sorted(experiment_settings.items()))
            scheduled_experiments.add(str_experiment_settings)
            # Save the experiment to a JSON file
            config_filename = f"{config_output_dir}/{exp_name}_{exp_index:03d}.json"
            dirname = os.path.dirname(config_filename)
            os.makedirs(dirname, exist_ok=True)

            # Make some final adjustments to the experiment settings before saving to disk:
            experiment_settings["output_dir"] = f'{experiment_settings["output_dir"]}__{exp_index:03d}'

            with open(config_filename, "w") as f:
                json.dump(experiment_settings, f, indent=4)
            break

    if resamples >= try_sampling_n_times:
        print(f"\nCould not find a new experiment_setting after random sampling {try_sampling_n_times} times, dumping all experiment_settings to .json files")
        break

print(f"\n\n---> Saved {len(scheduled_experiments)} experiment configurations to {config_output_dir}")

def generate_sh_script(folder_path, output_sh_path):
    # Get a list of JSON files in the folder, sorted alphabetically
    json_files = sorted([f for f in os.listdir(folder_path) if f.endswith('.json')])
    
    # Open the output .sh file for writing
    with open(output_sh_path, 'w') as sh_file:
        # Write the shebang line for a bash script
        sh_file.write("#!/bin/bash\n\n")
        
        # Write a command for each JSON file
        for json_file in json_files:
            command = f"python main.py -c {os.path.join(folder_path, json_file)}\n"
            sh_file.write(command)

generate_sh_script(config_output_dir, output_sh_path)
print(f"\n---> Saved the executable shell script to {output_sh_path}")