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import json
import requests

from flask import g
from wqflask.database import database_connection
from base import webqtlConfig

from utility.redis_tools import (get_redis_conn,
                                 get_resource_info,
                                 get_resource_id,
                                 add_resource)
from utility.tools import get_setting, GN_PROXY_URL

Redis = get_redis_conn()

def check_resource_availability(dataset, user_id, trait_id=None):
    # At least for now assume temporary entered traits are accessible
    if type(dataset) == str or dataset.type == "Temp":
        return webqtlConfig.DEFAULT_PRIVILEGES

    resource_id = get_resource_id(dataset, trait_id)

    # ZS: This should never be false, but it's technically possible if
    # a non-Temp dataset somehow had a type other than
    # Publish/ProbeSet/Geno
    if resource_id:
        resource_info = get_resource_info(resource_id)

        # If resource isn't already in redis, add it with default
        # privileges
        if not resource_info:
            resource_info = add_new_resource(dataset, trait_id)

    # Check if super-user - we should probably come up with some
    # way to integrate this into the proxy
    if user_id in Redis.smembers("super_users"):
        return webqtlConfig.SUPER_PRIVILEGES

    response = None
    the_url = f"{GN_PROXY_URL}available?resource={resource_id}&user={user_id}"
    try:
        response = json.loads(requests.get(the_url).content)
    except:
        response = resource_info['default_mask']

    return response


def add_new_resource(dataset, trait_id=None):
    resource_ob = {
        'owner_id': "none",  # webqtlConfig.DEFAULT_OWNER_ID,
        'default_mask': webqtlConfig.DEFAULT_PRIVILEGES,
        'group_masks': {}
    }

    if dataset.type == "Publish":
        group_code = get_group_code(dataset)
        if group_code is None:
            group_code = ""
        resource_ob['name'] = group_code + "_" + str(trait_id)
        resource_ob['data'] = {
            'dataset': dataset.id,
            'trait': trait_id
        }
        resource_ob['type'] = 'dataset-publish'
    elif dataset.type == "Geno":
        resource_ob['name'] = dataset.name
        resource_ob['data'] = {
            'dataset': dataset.id
        }
        resource_ob['type'] = 'dataset-geno'
    else:
        resource_ob['name'] = dataset.name
        resource_ob['data'] = {
            'dataset': dataset.id
        }
        resource_ob['type'] = 'dataset-probeset'

    resource_info = add_resource(resource_ob, update=False)

    return resource_info


def get_group_code(dataset):
    with database_connection(get_setting("SQL_URI")) as conn, conn.cursor() as cursor:
        cursor.execute(
            "SELECT InbredSetCode FROM InbredSet WHERE Name=%s",
            (dataset.group.name,)
        )
        if results := cursor.fetchone():
            return results[0]
        return ""


def check_admin(resource_id=None):
    the_url = GN_PROXY_URL + "available?resource={}&user={}".format(
        resource_id, g.user_session.user_id)
    try:
        response = json.loads(requests.get(the_url).content)['admin']
    except:
        resource_info = get_resource_info(resource_id)
        response = resource_info['default_mask']['admin']

    if type(response) is list:
        if 'edit-admins' in response:
            return 'edit_admins'
        elif 'edit-access' in response:
            return 'edit-access'

    return response


def check_owner(dataset=None, trait_id=None, resource_id=None):
    if resource_id:
        resource_info = get_resource_info(resource_id)
        if g.user_session.user_id == resource_info['owner_id']:
            return resource_id
    else:
        resource_id = get_resource_id(dataset, trait_id)
        if resource_id:
            resource_info = get_resource_info(resource_id)
            if g.user_session.user_id == resource_info['owner_id']:
                return resource_id

    return False


def check_owner_or_admin(dataset=None, trait_id=None, resource_id=None):
    if not resource_id:
        if dataset.type == "Temp":
            return "not-admin"
        else:
            resource_id = get_resource_id(dataset, trait_id)

    try:
        user_id = g.user_session.user_id.encode('utf-8')
    except:
        user_id = g.user_session.user_id

    if user_id in Redis.smembers("super_users"):
        return "owner"

    resource_info = get_resource_info(resource_id)
    if resource_info:
        if user_id == resource_info['owner_id']:
            return "owner"
        else:
            return check_admin(resource_id)

    return "not-admin"