import json
import os
from typing import Callable, List, Union, Dict

# fake default account to use kaggle.api.kaggle_api_extended
os.environ['KAGGLE_USERNAME']=''
os.environ['KAGGLE_KEY']=''

from kaggle.api.kaggle_api_extended import KaggleApi
from kaggle.rest import ApiException
import shutil
import time
import threading
import copy
from logger import sheet_logger


def get_api():
    api = KaggleApi()
    api.authenticate()
    return api


class KaggleApiWrapper(KaggleApi):
    """
    Override KaggleApi.read_config_environment to use username and secret without environment variables
    """

    def __init__(self, username, secret):
        super().__init__()
        self.username = username
        self.secret = secret

    def read_config_environment(self, config_data=None, quiet=False):
        config = super().read_config_environment(config_data, quiet)
        config['username'] = self.username
        config['key'] = self.secret
        # only work for pythonanyware
        # config['proxy'] = "http://proxy.server:3128"

        return config_data

    def __del__(self):
        # todo: fix bug when delete api
        pass

#     def get_accelerator_quota_with_http_info(self):  # noqa: E501
#         """
#
#         This method makes a synchronous HTTP request by default. To make an
#         asynchronous HTTP request, please pass async_req=True
#         >>> thread = api.competitions_list_with_http_info(async_req=True)
#         >>> result = thread.get()
#
#         :param async_req bool
#         :param str group: Filter competitions by a particular group
#         :param str category: Filter competitions by a particular category
#         :param str sort_by: Sort the results
#         :param int page: Page number
#         :param str search: Search terms
#         :return: Result
#                  If the method is called asynchronously,
#                  returns the request thread.
#         """
#
#         all_params = []  # noqa: E501
#         all_params.append('async_req')
#         all_params.append('_return_http_data_only')
#         all_params.append('_preload_content')
#         all_params.append('_request_timeout')
#
#         params = locals()
#
#         collection_formats = {}
#
#         path_params = {}
#
#         query_params = []
#         # if 'group' in params:
#         #     query_params.append(('group', params['group']))  # noqa: E501
#         # if 'category' in params:
#         #     query_params.append(('category', params['category']))  # noqa: E501
#         # if 'sort_by' in params:
#         #     query_params.append(('sortBy', params['sort_by']))  # noqa: E501
#         # if 'page' in params:
#         #     query_params.append(('page', params['page']))  # noqa: E501
#         # if 'search' in params:
#         #     query_params.append(('search', params['search']))  # noqa: E501
#
#         header_params = {}
#
#         form_params = []
#         local_var_files = {}
#
#         body_params = None
#         # HTTP header `Accept`
#         header_params['Accept'] = self.api_client.select_header_accept(
#             ['application/json'])  # noqa: E501
#
#         # Authentication setting
#         auth_settings = ['basicAuth']  # noqa: E501
#
#         return self.api_client.call_api(
#             'i/kernels.KernelsService/GetAcceleratorQuotaStatistics', 'GET',
#             # '/competitions/list', 'GET',
#             path_params,
#             query_params,
#             header_params,
#             body=body_params,
#             post_params=form_params,
#             files=local_var_files,
#             response_type='Result',  # noqa: E501
#             auth_settings=auth_settings,
#             async_req=params.get('async_req'),
#             _return_http_data_only=params.get('_return_http_data_only'),
#             _preload_content=params.get('_preload_content', True),
#             _request_timeout=params.get('_request_timeout'),
#             collection_formats=collection_formats)
#
# if __name__ == "__main__":
#     api = KaggleApiWrapper('ha.vt194547@sis.hust.edu.vn', "c54e96568075fcc277bd10ba0e0a52b9")
#     api.authenticate()
#     print(api.get_accelerator_quota_with_http_info())

class ValidateException(Exception):
    def __init__(self, message: str):
        super(ValidateException, self).__init__(message)

    @staticmethod
    def from_api_exception(e: ApiException, kernel_slug: str):
        return ValidateException(f"Error: {e.status} {e.reason} with notebook {kernel_slug}")

    @staticmethod
    def from_api_exception_list(el: List[ApiException], kernel_slug_list: List[str]):
        message = f"Error: \n"
        for e, k in zip(el, kernel_slug_list):
            message = message + f"\t{e.status} {e.reason} with notebook {k}"
        return ValidateException(message)


class KaggleNotebook:
    def __init__(self, api: KaggleApi, kernel_slug: str, container_path: str = "./tmp", id=None):
        """
        :param api: KaggleApi
        :param kernel_slug: Notebook id, you can find it in the url of the notebook.
                            For example, `username/notebook-name-123456`
        :param container_path: Path to the local folder where the notebook will be downloaded
        """
        self.api = api
        self.kernel_slug = kernel_slug
        self.container_path = container_path
        self.id = id
        if self.id is None:
            print(f"Warn: {self.__class__.__name__}.id is None")

    def status(self) -> str or None:
        """
        :return:
            "running"
            "cancelAcknowledged"
            "queued": waiting for run
            "error": when raise exception in notebook
        Throw exception when failed
        """
        res = self.api.kernels_status(self.kernel_slug)
        print(f"Status: {res}")
        if res is None:
            if self.id is not None:
                sheet_logger.update_job_status(self.id, notebook_status='None')
            return None
        if self.id is not None:
            sheet_logger.update_job_status(self.id, notebook_status=res['status'])
        return res['status']

    def _get_local_nb_path(self) -> str:
        return os.path.join(self.container_path, self.kernel_slug)

    def pull(self, path=None) -> str or None:
        """

        :param path:
        :return:
        :raises: ApiException if notebook not found or not share to user
        """
        self._clean()
        path = path or self._get_local_nb_path()
        metadata_path = os.path.join(path, "kernel-metadata.json")
        res = self.api.kernels_pull(self.kernel_slug, path=path, metadata=True, quiet=False)
        if not os.path.exists(metadata_path):
            print(f"Warn: Not found {metadata_path}. Clean {path}")
            self._clean()
            return None
        return res

    def push(self, path=None) -> str or None:
        status = self.status()
        if status in ['queued', 'running']:
            print("Warn: Notebook is " + status + ". Skip push notebook!")
            return None

        self.api.kernels_push(path or self._get_local_nb_path())
        time.sleep(1)
        status = self.status()
        return status

    def _clean(self) -> None:
        if os.path.exists(self._get_local_nb_path()):
            shutil.rmtree(self._get_local_nb_path())

    def get_metadata(self, path=None):
        path = path or self._get_local_nb_path()
        metadata_path = os.path.join(path, "kernel-metadata.json")
        if not os.path.exists(metadata_path):
            return None
        return json.loads(open(metadata_path).read())

    def check_nb_permission(self) -> Union[tuple[bool], tuple[bool, None]]:
        status = self.status() # raise ApiException
        if status is None:
            return False, status
        return True, status


    def check_datasets_permission(self) -> bool:
        meta = self.get_metadata()
        if meta is None:
            print("Warn: cannot get metadata. Pull and try again?")
        dataset_sources = meta['dataset_sources']
        ex_list = []
        slugs = []
        for dataset in dataset_sources:
            try:
                self.api.dataset_status(dataset)
            except ApiException as e:
                print(f"Error: {e.status} {e.reason} with dataset {dataset} in notebook {self.kernel_slug}")
                ex_list.append(e)
                slugs.append(self.kernel_slug)
                # return False
        if len(ex_list) > 0:
            raise ValidateException.from_api_exception_list(ex_list, slugs)
        return True


class AccountTransactionManager:
    def __init__(self, acc_secret_dict: dict=None):
        """
        :param acc_secret_dict: {username: secret}
        """
        self.acc_secret_dict = acc_secret_dict
        if self.acc_secret_dict is None:
            self.acc_secret_dict = {}
        # self.api_dict = {username: KaggleApiWrapper(username, secret) for username, secret in acc_secret_dict.items()}
        # lock for each account to avoid concurrent use api
        self.lock_dict = {username: False for username in self.acc_secret_dict.keys()}
        self.state_lock = threading.Lock()

    def _get_api(self, username: str) -> KaggleApiWrapper:
        # return self.api_dict[username]
        return KaggleApiWrapper(username, self.acc_secret_dict[username])

    def _get_lock(self, username: str) -> bool:
        return self.lock_dict[username]

    def _set_lock(self, username: str, lock: bool) -> None:
        self.lock_dict[username] = lock

    def add_account(self, username, secret):
        if username not in self.acc_secret_dict.keys():
            self.state_lock.acquire()
            self.acc_secret_dict[username] = secret
            self.lock_dict[username] = False
            self.state_lock.release()

    def remove_account(self, username):
        if username in self.acc_secret_dict.keys():
            self.state_lock.acquire()
            del self.acc_secret_dict[username]
            del self.lock_dict[username]
            self.state_lock.release()
        else:
            print(f"Warn: try to remove account not in the list: {username}, list: {self.acc_secret_dict.keys()}")

    def get_unlocked_api_unblocking(self, username_list: List[str]) -> tuple[KaggleApiWrapper, Callable[[], None]]:
        """
        :param username_list: list of username
        :return: (api, release) where release is a function to release api
        """
        while True:
            print("get_unlocked_api_unblocking" + str(username_list))
            for username in username_list:
                self.state_lock.acquire()
                if not self._get_lock(username):
                    self._set_lock(username, True)
                    api = self._get_api(username)

                    def release():
                        self.state_lock.acquire()
                        self._set_lock(username, False)
                        api.__del__()
                        self.state_lock.release()

                    self.state_lock.release()
                    return api, release
                self.state_lock.release()
            time.sleep(1)


class NbJob:
    def __init__(self, acc_dict: dict, nb_slug: str, rerun_stt: List[str] = None, not_rerun_stt: List[str] = None, id=None):
        """

        :param acc_dict:
        :param nb_slug:
        :param rerun_stt:
        :param not_rerun_stt: If notebook status in this list, do not rerun it. (Note: do not add "queued", "running")
        """
        self.rerun_stt = rerun_stt
        if self.rerun_stt is None:
            self.rerun_stt = ['complete']
        self.not_rerun_stt = not_rerun_stt

        if self.not_rerun_stt is None:
            self.not_rerun_stt = ['queued', 'running', 'cancelAcknowledged']
        assert "queued" in self.not_rerun_stt
        assert "running" in self.not_rerun_stt

        self.acc_dict = acc_dict
        self.nb_slug = nb_slug
        self.id = id

    def get_acc_dict(self):
        return self.acc_dict

    def get_username_list(self):
        return list(self.acc_dict.keys())

    def is_valid_with_acc(self, api):
        """
        :param api:
        :return:
        :raise: ValidationException
        """
        notebook = KaggleNotebook(api, self.nb_slug, id=self.id)

        try:
            notebook.pull()  # raise ApiException
            stt, _ = notebook.check_nb_permission()  # note: raise ApiException
            stt = notebook.check_datasets_permission()  # raise ValidationException
        except ApiException as e:
            raise ValidateException.from_api_exception(e, self.nb_slug)
        # if not stt:
        #     return False
        return True

    def is_valid(self):
        for username in self.acc_dict.keys():
            secrets = self.acc_dict[username]
            api = KaggleApiWrapper(username=username, secret=secrets)
            api.authenticate()
            if not self.is_valid_with_acc(api):
                return False
        return True

    def acc_check_and_rerun_if_need(self, api: KaggleApi) -> bool:
        """
        :return:
            True if rerun success or notebook is running
            False user does not have enough gpu quotas
        :raises
            Exception if setup error
        """
        notebook = KaggleNotebook(api, self.nb_slug, "./tmp", id=self.id)  # todo: change hardcode container_path here

        notebook.pull()
        assert notebook.check_datasets_permission(), f"User {api} does not have permission on datasets of notebook {self.nb_slug}"
        success, status1 = notebook.check_nb_permission()
        assert success, f"User {api} does not have permission on notebook {self.nb_slug}"  # todo: using api.username

        if status1 in self.rerun_stt:
            status2 = notebook.push()
            time.sleep(10)
            status3 = notebook.status()

            # if 3 times same stt -> acc out of quota
            if status1 == status2 == status3:
                sheet_logger.log(username=api.username, nb=self.nb_slug, log="Try but no effect. Seem account to be out of quota")
                return False
            if status3 in self.not_rerun_stt:
                # sheet_logger.log(username=api.username, nb=self.nb_slug, log=f"Notebook status is {status3} is in ignore status list {self.not_rerun_stt}, do nothing!")
                sheet_logger.log(username=api.username, nb=self.nb_slug,
                                 log=f"Schedule notebook successfully. Current status is '{status3}'")
                return True
            if status3 not in ["queued", "running"]:
                # return False # todo: check when user is out of quota
                print(f"Error: status is {status3}")

                raise Exception("Setup exception")

            return True

        sheet_logger.log(username=api.username, nb=self.nb_slug, log=f"Notebook status is '{status1}' is not in {self.rerun_stt}, do nothing!")
        return True

    @staticmethod
    def from_dict(obj: dict, id=None):
        return NbJob(acc_dict=obj['accounts'], nb_slug=obj['slug'], rerun_stt=obj.get('rerun_status'), not_rerun_stt=obj.get('not_rerun_stt'), id=id)


class KernelRerunService:
    def __init__(self):
        self.jobs: Dict[str, NbJob] = {}
        self.acc_manager = AccountTransactionManager()
        self.username2jobid = {}
        self.jobid2username = {}

    def add_job(self, nb_job: NbJob):
        if nb_job.nb_slug in self.jobs.keys():
            print("Warn: nb_job already in job list")
            return
        self.jobs[nb_job.nb_slug] = nb_job
        self.jobid2username[nb_job.nb_slug] = nb_job.get_username_list()
        for username in nb_job.get_username_list():
            if username not in self.username2jobid.keys():
                self.username2jobid[username] = []
                self.acc_manager.add_account(username, nb_job.acc_dict[username])
            self.username2jobid[username].append(nb_job.nb_slug)

    def remove_job(self, nb_job):
        if nb_job.nb_slug not in self.jobs.keys():
            print("Warn: try to remove nb_job not in list")
            return
        username_list = self.jobid2username[nb_job.nb_slug]
        username_list = [username for username in username_list if len(self.username2jobid[username]) == 1]

        for username in username_list:
            del self.username2jobid[username]
            self.acc_manager.remove_account(username)
        del self.jobs[nb_job.nb_slug]
        del self.jobid2username[nb_job.nb_slug]

    def validate_all(self):
        for username in self.acc_manager.acc_secret_dict.keys():
            api, release = self.acc_manager.get_unlocked_api_unblocking([username])
            api.authenticate()
            print(f"Using username: {api.username}")

            for job in self.jobs.values():
                ex_msg_list = []
                if username in job.get_username_list():
                    print(f"Validate user: {username}, job: {job.nb_slug}")

                    try:
                        job.is_valid_with_acc(api)
                    except ValidateException as e:
                        print(f"Error: not valid")
                        a = f"Setup error: {username} does not have permission on notebook {job.nb_slug} or related datasets"
                        if job.id is not None: # if have id, write log
                            ex_msg_list.append(f"Account {username}\n" + str(e) + "\n")
                        else: # if not have id, raise
                            raise Exception(a)
                if len(ex_msg_list) > 0:
                    sheet_logger.update_job_status(job.id, validate_status="\n".join(ex_msg_list))
                else:
                    sheet_logger.update_job_status(job.id, validate_status="success")

            release()
        return True

    def status_all(self):
        for job in self.jobs.values():
            print(f"Job: {job.nb_slug}")
            api, release = self.acc_manager.get_unlocked_api_unblocking(job.get_username_list())
            api.authenticate()
            print(f"Using username: {api.username}")
            notebook = KaggleNotebook(api, job.nb_slug, id=job.id)
            print(f"Notebook: {notebook.kernel_slug}")
            print(notebook.status())
            release()

    def run(self, nb_job: NbJob):
        username_list = copy.copy(nb_job.get_username_list())
        while len(username_list) > 0:
            api, release = self.acc_manager.get_unlocked_api_unblocking(username_list)
            api.authenticate()
            print(f"Using username: {api.username}")

            try:
                result = nb_job.acc_check_and_rerun_if_need(api)
                if result:
                    return True
            except Exception as e:
                print(e)
                release()
                break

            if api.username in username_list:
                username_list.remove(api.username)
                release()
            else:
                release()
                raise Exception("")
        return False

    def run_all(self):
        for job in self.jobs.values():
            success = self.run(job)
            print(f"Job: {job.nb_slug} {success}")


# if __name__ == "__main__":
    # service = KernelRerunService()
    # files = os.listdir("./config")
    # for file in files:
    #     if '.example' not in file:
    #         with open(os.path.join("./config", file), "r") as f:
    #             obj = json.loads(f.read())
    #             print(obj)
    #             service.add_job(NbJob.from_dict(obj))
    # service.run_all()

    # try:
    #     acc_secret_dict = {
    #         "hahunavth": "secret",
    #         "hahunavth2": "secret",
    #         "hahunavth3": "secret",
    #         "hahunavth4": "secret",
    #         "hahunavth5": "secret",
    #     }
    #     acc_manager = AccountTransactionManager(acc_secret_dict)
    #
    #
    #     def test1():
    #         username_list = ["hahunavth", "hahunavth2", "hahunavth3", "hahunavth4", "hahunavth5"]
    #         while len(username_list) > 0:
    #             api, release = acc_manager.get_unlocked_api_unblocking(username_list)
    #             print("test1 is using " + api.username)
    #             time.sleep(1)
    #             release()
    #             if api.username in username_list:
    #                 username_list.remove(api.username)
    #             else:
    #                 raise Exception("")
    #             print("test1 release " + api.username)
    #
    #
    #     def test2():
    #         username_list = ["hahunavth2", "hahunavth3", "hahunavth5"]
    #         while len(username_list) > 0:
    #             api, release = acc_manager.get_unlocked_api_unblocking(username_list)
    #             print("test2 is using " + api.username)
    #             time.sleep(3)
    #             release()
    #             if api.username in username_list:
    #                 username_list.remove(api.username)
    #             else:
    #                 raise Exception("")
    #             print("test2 release " + api.username)
    #
    #
    #     t1 = threading.Thread(target=test1)
    #     t2 = threading.Thread(target=test2)
    #     t1.start()
    #     t2.start()
    #     t1.join()
    #     t2.join()
    #
    #     # kgapi = KaggleApiWrapper("hahunavth", "fb3d65ea4d06f91a83cf571e9a39d40d")
    #     # kgapi.authenticate()
    #     # # kgapi = get_api()
    #     # notebook = KaggleNotebook(kgapi, "hahunavth/ess-vlsp2023-denoising", "./tmp")
    #     # # print(notebook.pull())
    #     # # print(notebook.check_datasets_permission())
    #     # print(notebook.check_nb_permission())
    #     # # print(notebook.status())
    #     # # notebook.push()
    #     # # print(notebook.status())
    # except ApiException as e:
    #     print(e.status)
    #     print(e.reason)
    #     raise e
    #     # 403 when nb not exists or not share to acc
    #     # 404 when push to unknow kenel_slug.username
    #     # 401 when invalid username, pass