import logging
import json
from pyzipline.rest_adapter import RestAdapter
from pyzipline.exceptions import PyZiplineError, FeatureDisabledError
from pyzipline.models import *

class ZiplineApi:
    """Represents an instance of the Zipline API.

    All API requests should be made through this class.

    Args:
        hostname (str): The hostname of your Zipline instance, WITHOUT https or http.
        token (str = None): String used for authentication when making requests.
        ssl (bool = True): Normally set to True, but if your Zipline instance doesn't use SSL/TLS, set this to False.
        enforced_signing (bool = True): Normally set to True, but if having SSL/TLS cert validation issues, can turn off with False.
        logger (logging.Logger = None): If your app has a logger, pass it in here.
    """
    def __init__(
        self,
        hostname: str,
        token: str = '',
        ssl: bool = True,
        enforced_signing: bool = True,
        logger: logging.Logger = None
    ):
        self._rest_adapter = RestAdapter(hostname=hostname, token=token, ssl=ssl, enforced_signing=enforced_signing, logger=logger)

    def get_user(self, user_id: int) -> User:
        """Get a user by ID

        /// admonition | Requires Administrator
            type: danger
        ///

        Args:
            user_id (int): Integer ID of the user to retrieve

        Returns:
            User: The user with the given ID
        """
        result = self._rest_adapter.get(endpoint=f"user/{user_id}")
        return User(**result.data)

    def get_self(self) -> User:
        """Get the currently authenticated user

        /// admonition | Requires Authentication
            type: warning
        ///

        Returns:
            User: The currently authenticated user
        """
        result = self._rest_adapter.get(endpoint=f"user")
        if result.status_code == 200:
            return User(**result.data)
        elif result.status_code == 401:
            raise ValueError(result.message)

    def check_user_exists(self, username: str, invite: str = None) -> bool:
        """Check if a user exists by username

        Args:
            username (str): Username to check
            invite (str = None): Invite code to use, only required if registration without invites is disabled

        Raises:
            FeatureDisabledError: Raised when registration or invites are disabled on the Zipline instance
            PyZiplineError: Raised if the API changes, causing a breaking change in this method
            ValueError: Raised when the username is not present, or the invite code is invalid/not present and invites are enabled

        Returns:
            bool: True if user exists, False if not
        """
        data = {'username': username} if invite is None else {'username': username, 'code': invite}
        result: Result = self._rest_adapter.post(endpoint=f"user/check", data=data)
        if result.status_code == 200:
            return False
        elif result.message == 'username already exists':
            return True
        elif result.message == 'user registration is disabled':
            raise FeatureDisabledError('user registration or invites are disabled')
        elif result.message == 'invalid invite code':
            raise ValueError(result.message + "(most likely doesn't exist)")
        elif result.message == 'no code':
            raise ValueError('invite code not provided')
        elif result.message == 'no username':
            raise ValueError('username not provided')
        else:
            raise PyZiplineError(result.message)