import logging
import typing as t
from enum import Enum
from peewee import (
    ForeignKeyField,
    CharField,
    IntegerField,
    DoesNotExist,
)

from app.classes.models.base_model import BaseModel
from app.classes.models.servers import HelperServers
from app.classes.models.users import Users, ApiKeys, HelperUsers
from app.classes.shared.permission_helper import PermissionHelper

logger = logging.getLogger(__name__)


# **********************************************************************************
#                                  User_Crafty Class
# **********************************************************************************
class UserCrafty(BaseModel):
    user_id = ForeignKeyField(Users, backref="users_crafty")
    permissions = CharField(default="00000000")
    limit_server_creation = IntegerField(default=-1)
    limit_user_creation = IntegerField(default=0)
    limit_role_creation = IntegerField(default=0)

    class Meta:
        table_name = "user_crafty"


# **********************************************************************************
#                                  Crafty Permissions Class
# **********************************************************************************
class EnumPermissionsCrafty(Enum):
    SERVER_CREATION = 0
    USER_CONFIG = 1
    ROLES_CONFIG = 2


class PermissionsCrafty:
    # **********************************************************************************
    #                                  Crafty Permissions Methods
    # **********************************************************************************
    @staticmethod
    def get_permissions_list():
        return list(EnumPermissionsCrafty.__members__.values())

    @staticmethod
    def get_permissions(permissions_mask):
        return [
            permission
            for permission in EnumPermissionsCrafty.__members__.values()
            if PermissionsCrafty.has_permission(permissions_mask, permission)
        ]

    @staticmethod
    def has_permission(permission_mask, permission_tested: EnumPermissionsCrafty):
        return permission_mask[permission_tested.value] == "1"

    @staticmethod
    def set_permission(
        permission_mask, permission_tested: EnumPermissionsCrafty, value
    ):
        index = permission_tested.value
        return permission_mask[:index] + str(value) + permission_mask[index + 1 :]

    @staticmethod
    def get_permission(permission_mask, permission_tested: EnumPermissionsCrafty):
        return permission_mask[permission_tested.value]

    @staticmethod
    def get_crafty_permissions_mask(user_id):
        # TODO: only get the permissions of the UserCrafty
        user_crafty = PermissionsCrafty.get_user_crafty(user_id)
        permissions_mask = user_crafty.permissions
        return permissions_mask

    @staticmethod
    def get_all_permission_quantity_list():
        return {name: -1 for name in EnumPermissionsCrafty.__members__.keys()}

    @staticmethod
    def get_permission_quantity_list(user_id):
        user_crafty = PermissionsCrafty.get_user_crafty(user_id)
        quantity_list = {
            EnumPermissionsCrafty.SERVER_CREATION.name: user_crafty.limit_server_creation,  # pylint: disable=line-too-long
            EnumPermissionsCrafty.USER_CONFIG.name: user_crafty.limit_user_creation,
            EnumPermissionsCrafty.ROLES_CONFIG.name: user_crafty.limit_role_creation,
        }
        return quantity_list

    # **********************************************************************************
    #                                   User_Crafty Methods
    # **********************************************************************************
    @staticmethod
    def get_user_crafty(user_id):
        try:
            user_crafty = UserCrafty.get(UserCrafty.user_id == user_id)
        except DoesNotExist:
            UserCrafty.insert(
                {
                    UserCrafty.user_id: user_id,
                    UserCrafty.permissions: "000",
                    UserCrafty.limit_server_creation: 0,
                    UserCrafty.limit_user_creation: 0,
                    UserCrafty.limit_role_creation: 0,
                }
            ).execute()
            user_crafty = PermissionsCrafty.get_user_crafty(user_id)
        return user_crafty

    @staticmethod
    def get_user_crafty_optional(user_id) -> t.Optional[UserCrafty]:
        try:
            return UserCrafty.get(UserCrafty.user_id == user_id)
        except DoesNotExist:
            return None

    @staticmethod
    def add_user_crafty(user_id, uc_permissions):
        user_crafty = UserCrafty.insert(
            {UserCrafty.user_id: user_id, UserCrafty.permissions: uc_permissions}
        ).execute()
        return user_crafty

    @staticmethod
    def add_or_update_user(
        user_id,
        permissions_mask,
        limit_server_creation,
        limit_user_creation,
        limit_role_creation,
    ):
        # http://docs.peewee-orm.com/en/latest/peewee/querying.html#upsert

        try:
            user_crafty = UserCrafty.select().where(UserCrafty.user_id == user_id).get()
            user_crafty.permissions = permissions_mask
            user_crafty.limit_server_creation = limit_server_creation
            user_crafty.limit_user_creation = limit_user_creation
            user_crafty.limit_role_creation = limit_role_creation
            UserCrafty.save(user_crafty)
        except:
            UserCrafty.insert(
                {
                    UserCrafty.user_id: user_id,
                    UserCrafty.permissions: permissions_mask,
                    UserCrafty.limit_server_creation: limit_server_creation,
                    UserCrafty.limit_user_creation: limit_user_creation,
                    UserCrafty.limit_role_creation: limit_role_creation,
                }
            ).execute()

    @staticmethod
    def get_created_quantity_list(user_id):
        quantity_list = {
            EnumPermissionsCrafty.SERVER_CREATION.name: HelperServers.get_total_owned_servers(  # pylint: disable=line-too-long
                user_id
            ),
            EnumPermissionsCrafty.USER_CONFIG.name: HelperUsers.get_managed_users(
                user_id
            ).count(),
            EnumPermissionsCrafty.ROLES_CONFIG.name: HelperUsers.get_managed_roles(
                user_id
            ).count(),
        }
        return quantity_list

    @staticmethod
    def get_crafty_limit_value(user_id, permission):
        quantity_list = PermissionsCrafty.get_permission_quantity_list(user_id)
        return quantity_list[permission]

    @staticmethod
    def can_add_in_crafty(user_id, permission):
        user_crafty = PermissionsCrafty.get_user_crafty(user_id)
        can = PermissionsCrafty.has_permission(user_crafty.permissions, permission)
        limit_list = PermissionsCrafty.get_permission_quantity_list(user_id)
        quantity_list = PermissionsCrafty.get_created_quantity_list(user_id)
        return can and (
            (quantity_list[permission.name] < limit_list[permission.name])
            or limit_list[permission.name] == -1
        )

    @staticmethod
    def get_api_key_permissions_list(key: ApiKeys):
        user = HelperUsers.get_user(key.user_id)
        if user["superuser"] and key.full_access:
            return PermissionsCrafty.get_permissions_list()
        if user["superuser"]:
            # User is superuser but API key isn't
            user_permissions_mask = "111"
        else:
            # Not superuser
            user_permissions_mask = PermissionsCrafty.get_crafty_permissions_mask(
                user["user_id"]
            )
        key_permissions_mask: str = key.crafty_permissions
        permissions_mask = PermissionHelper.combine_masks(
            user_permissions_mask, key_permissions_mask
        )
        permissions_list = PermissionsCrafty.get_permissions(permissions_mask)
        return permissions_list