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utils.py
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utils.py
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from flask import session
from flask_login import current_user
import pandas as pd
import azure.cosmos.exceptions as exceptions
import os
import azure.cosmos.cosmos_client as cosmos_client
from dotenv import load_dotenv
load_dotenv()
def get_cosmos_db():
settings = {
'host': os.environ.get('ACCOUNT_HOST', 'https://emergencycosmos.documents.azure.com:443/'),
'master_key': os.getenv('COSMOS_KEY'),
'database_id': os.environ.get('COSMOS_DATABASE', 'ReliefApp'),
'container_id': os.environ.get('COSMOS_CONTAINER', 'Beneficiaries'),
}
client = cosmos_client.CosmosClient(settings['host'],
{'masterKey': settings['master_key']},
user_agent="ReliefApp",
user_agent_overwrite=True)
return client.get_database_client(settings['database_id'])
cosmos_db = get_cosmos_db()
def get_local_data_path(user_email, distrib_id):
data_dir = 'instance'
os.makedirs(data_dir, exist_ok=True)
return f"{data_dir}/user_{user_email}_distrib_{distrib_id}_data.csv"
def delete_beneficiary_data(user_email, distrib_id):
if os.getenv("MODE") == "online":
cosmos_container = cosmos_db.get_container_client('Beneficiaries')
item_list = query_items_by_partition_key(cosmos_container, user_email)
item_list = filter_by_distribution(item_list, distrib_id)
for item in item_list:
cosmos_container.delete_item(item=item['id'], partition_key=user_email)
elif os.getenv("MODE") == "offline":
database = get_local_data_path(user_email, distrib_id)
if os.path.exists(database):
os.remove(database)
def get_beneficiary_data(user_email, distrib_id):
df = pd.DataFrame()
if os.getenv("MODE") == "online":
cosmos_container = cosmos_db.get_container_client('Beneficiaries')
item_list = query_items_by_partition_key(cosmos_container, user_email)
item_list = filter_by_distribution(item_list, distrib_id)
df = pd.DataFrame(item_list)
elif os.getenv("MODE") == "offline":
database = get_local_data_path(user_email, distrib_id)
if os.path.exists(database):
df = pd.read_csv(database, index_col=0, sep=';')
else:
return None
if df.empty:
return None
else:
df = df.drop(columns=['partitionKey', 'id', 'distrib_id'], errors='ignore')
df = df.drop(columns=[c for c in df.columns if c.startswith('_')])
return df
def get_beneficiary_entry(beneficiary_id, user_email, distrib_id):
if os.getenv("MODE") == "online":
cosmos_container = cosmos_db.get_container_client('Beneficiaries')
try:
data = cosmos_container.read_item(item=beneficiary_id,
partition_key=user_email)
for internal_field in [k for k in data.keys() if k.startswith('_')]:
data.pop(internal_field)
return data
except exceptions.CosmosResourceNotFoundError:
return "not_found"
elif os.getenv("MODE") == "offline":
database = get_local_data_path(user_email, distrib_id)
if os.path.exists(database):
df = pd.read_csv(database, sep=';', dtype={'id': str}).set_index('id')
if beneficiary_id in df.index:
return df.loc[beneficiary_id].to_dict()
else:
return "not_found"
else:
return "no_data"
def update_beneficiary_entry(beneficiary_id, user_email, distrib_id, replace_body):
if os.getenv("MODE") == "online":
try:
cosmos_container = cosmos_db.get_container_client('Beneficiaries')
read_item = cosmos_container.read_item(item=beneficiary_id, partition_key=user_email)
for key in replace_body.keys():
read_item[key] = replace_body[key]
cosmos_container.replace_item(item=read_item, body=read_item)
return "success"
except exceptions.CosmosResourceNotFoundError:
return "not_found"
elif os.getenv("MODE") == "offline":
database = get_local_data_path(user_email, distrib_id)
if os.path.exists(database):
df = pd.read_csv(database, sep=';', dtype={'id': str}).set_index('id')
if beneficiary_id in df.index:
for key in replace_body.keys():
df.at[beneficiary_id, key] = replace_body[key]
df.to_csv(database, sep=';')
return "success"
else:
return "not_found"
else:
return "no_data"
def save_beneficiary_data(data, distrib_id, user_email):
data_to_save = []
for ix, row in data.iterrows():
body = {
'id': str(distrib_id) + str(row['code']),
'partitionKey': user_email,
'distrib_id': str(distrib_id)
}
for key in row.keys():
if key != 'id' and key != 'partitionKey' and key != 'distrib_id':
body[key] = str(row[key])
data_to_save.append(body)
print(data_to_save)
if os.getenv("MODE") == "online":
cosmos_container = cosmos_db.get_container_client('Beneficiaries')
# save to cosmos db
for entry in data_to_save:
cosmos_container.create_item(body=entry)
elif os.getenv("MODE") == "offline":
database = get_local_data_path(user_email, distrib_id)
df = pd.DataFrame.from_records(data_to_save)
df.index = df['id']
df = df.drop(columns=['id'])
df.to_csv(database, sep=';')
def query_items_by_partition_key(container, key):
# Including the partition key value of account_number in the WHERE filter results in a more efficient query
items = list(container.query_items(
query="SELECT * FROM r WHERE r.partitionKey=@key",
parameters=[
{"name": "@key", "value": key}
]
))
return items
def filter_by_distribution(item_list, distrib_id):
for item in item_list[:]:
if 'distrib_id' in item.keys():
if str(item['distrib_id']) != str(distrib_id):
item_list.remove(item)
return item_list
def pandas_to_html(df, replace_values={}, replace_columns={}, titlecase=False):
df = df.replace(replace_values)
df = df.rename(columns=replace_columns)
if titlecase:
df.columns = [x.title() for x in df.columns]
columns = df.columns
rows = []
for ix, row in df.iterrows():
rows.append(row.to_dict())
return columns, rows