from libs.classes import Test, Model
from libs.functions import nxhash
from typing import Union

import json

def get_len(collection: Union[list, dict]) -> int:
    maximum_length = 0

    if isinstance(collection, list):
        collection_type = "seeds"
    elif isinstance(collection, dict):
        if isinstance(collection[list(collection.keys())[0]], Model):
            collection_type = "models"
        elif isinstance(collection[list(collection.keys())[0]], Test):
            collection_type = "tests"
        else: 
            raise TypeError("get_len: unsupported collection_type")
    else:
        raise TypeError("get_len: unsupported collection_type")

    match collection_type:
        case "models":
            for model_id in collection:
                maximum_length = max(maximum_length, len(collection[model_id].display_name))
        case "seeds":
            for seed in collection:
                maximum_length = max(maximum_length, len(str(seed)))
        case "tests":
            for test_id in collection:
                maximum_length = max(maximum_length, len(collection[test_id].name))
        case _:
            for model_name in collection:
                raise TypeError("get_len: unsupported collection_type")
        
    return maximum_length

    
    
def run_tests(models: dict[int, Model], seeds: list[int], tests: dict[int, Test], base_url: str):
    try:
        print("Trying to load saved_results.json")
        with open("./saved_results.json", "r") as f:
            saved_results = json.load(fp=f)
        print("Loaded.")
    except FileNotFoundError: 
        print("saved_results.json not found. Initializing empty.")
        saved_results = {}
    # Get Results
    run_results = {}
    print("Starting to run Tests ... ")
    for model_id in models:
        model = models[model_id]
        for test_id in tests:
            test = tests[test_id]
            for seed in seeds:
                # Init dict
                combination = { 
                    'test_id': test_id,
                    'model_id': model_id,
                    'seed': seed,
                }
                hash_key = str(nxhash(json.dumps(combination, sort_keys=True)))
                combination['test_name'] = test.name
                combination['model_name'] = model.display_name
                    
                # if hash_key == "DE3D137E":
                    # pass

                if hash_key not in saved_results.keys():
                    try: 
                        print("\033[0;35mModel '\033[0m" +
                              model.display_name +
                              "\033[0;35m'" +
                              (" " * (get_len(models) - len(model.display_name))) +
                              " with seed \033[0m\033[0;30m" +
                              ("0" * (get_len(seeds) - len(str(seed)))) +
                              "\033[0m" +
                              str(seed) +
                              "\033[0;35m now runs test '\033[0m" +
                              test.name +
                              "\033[0;35m'" +
                              (" " * (get_len(tests) - len(test.name))) +
                              " (\033[0m" +
                              hash_key +
                              "\033[0;35m)\033[0m",
                              end=""
                        )
                        answer = test.runnable(model=model, seed=seed, test=test, base_url=base_url)
                        if isinstance(answer, str): 
                            combination['answer'] = answer
                            # combination['tool_calls'] = [] # no entry
                            del answer
                        elif isinstance(answer, dict): # calls
                            combination['answer'] = answer['answer']
                            combination['tool_calls'] = answer['tool_calls']
                            del answer
                        else: 
                            raise Exception(f"runnable returned unkown type {type(answer)}.")
                            
                        combination['test'] = test
                        run_results[hash_key] = combination
                        print("\r\033[0;32mModel '\033[0m" +
                              model.display_name  +
                              "\033[0;32m'" +
                              (" " * (get_len(models) - len(model.display_name))) +
                              " with seed \033[0m\033[0;30m" +
                              ("0" * (get_len(seeds) - len(str(seed)))) +
                              "\033[0m" +
                              str(seed) +
                              "\033[0;32m finished test '\033[0m" +
                              test.name +
                              "\033[0;32m'" +
                              (" " * (get_len(tests) - len(test.name))) +
                              " (\033[0m" +
                              hash_key +
                              "\033[0;32m)\033[0m"
                        )
                    except Exception as e:
                          print("\r\033[0;31mError: <\033[0m" + str(e) + "\033[0;31m> at (\033[0m" + hash_key + "\033[0;31m). Continuing...\033[0m                      ")
                else: 
                    print("\r\033[0;34mModel '\033[0m" +
                          model.display_name  +
                          "\033[0;34m'" +
                          (" " * (get_len(models) - len(model.display_name))) +
                          " with seed \033[0m\033[0;30m" +
                          ("0" * (get_len(seeds) - len(str(seed)))) +
                          "\033[0m" +
                          str(seed) +
                          "\033[0;34m skipped  test '\033[0m" +
                          test.name +
                          "\033[0;34m'" +
                          (" " * (get_len(tests) - len(test.name))) +
                          " (\033[0m" +
                          hash_key +
                          "\033[0;34m) becasue its results exists in saved_results.json\033[0m"
                    )


    # Validate Results
    if run_results != {}:
        print("\nStarting validation of tests ...")
    for hash_key in run_results:
        result = run_results[hash_key]
        
        try:
            entry = {
                'test_name':  result['test_name'],
                'test_id':    result['test_id'],
                'model_name': result['model_name'],
                'model_id':   result['model_id'],
                'seed':       result['seed'],
                'answer':     result['answer'],
                'validation': result['test'].validator(test=result['test'], answer=result['answer'], base_url=base_url),
            }
        except Exception as e:
            print("\033[0;31mError validating entry (\033[0m" + hash_key + "\033[0;31m). <\033[0m" + str(e) + "\033[0;31m> Continuing...\033[0m                      ")
            continue

        try:
            entry['tool_calls'] = result['tool_calls'] 
        except KeyError:
            pass
            

        saved_results[hash_key] = entry # add result with validation to saved results

        print("\033[0;36mTest results of model '\033[0m" +
              entry['model_name'] +
              "\033[0;36m'" +
              (" " * (get_len(models) - len(entry['model_name']))) +
              " with seed \033[0m\033[0;30m" +
              ("0" * (get_len(seeds) - len(str(entry['seed'])))) +
              "\033[0m" +
              str(entry['seed']) +
              "\033[0;36m on test '\033[0m" +
              entry['test_name'] +
              "\033[0;36m'" +
              (" " * (get_len(tests) - len(entry['test_name']))) +
              " (\033[0m" +
              hash_key +
              "\033[0;36m) evaluated to \033[0m" + 
              ('\033[0;32mcorrect\033[0m' if entry['validation'] else '\033[0;31mincorrect\033[0m')
        )

    with open("./saved_results.json", "w") as f:
        json.dump(fp=f, obj=saved_results, indent=4, sort_keys=True, ensure_ascii=False)

    return saved_results