def get_stats(connection: Connection,
survey_id: str,
email: str) -> dict:
"""
Get statistics about the specified survey: creation time, number of
submissions, time of the earliest submission, and time of the latest
submission.
:param connection: a SQLAlchemy Connection
:param survey_id: the UUID of the survey
:param email: the e-mail address of the user
:return: a JSON representation of the statistics.
"""
result = connection.execute(
select([
survey_table.c.created_on,
count(submission_table.c.submission_id),
sqlmin(submission_table.c.submission_time),
sqlmax(submission_table.c.submission_time)
]).select_from(
auth_user_table.join(survey_table).outerjoin(submission_table)
).where(
survey_table.c.survey_id == survey_id
).where(
auth_user_table.c.email == email
).group_by(
survey_table.c.survey_id
)
).first()
return json_response({
'created_on': maybe_isoformat(result[0]),
'num_submissions': result[1],
'earliest_submission_time': maybe_isoformat(result[2]),
'latest_submission_time': maybe_isoformat(result[3])
})
def _jsonify(connection: Connection,
answer: object,
question_id: str) -> object:
"""
This function returns a "nice" representation of an answer which can be
serialized as JSON.
:param connection: a SQLAlchemy Connection
:param answer: a submitted value
:param type_constraint_name: the UUID of the question
:return: the nice representation
"""
type_constraint_name = question_select(connection,
question_id).type_constraint_name
if type_constraint_name in {'location', 'facility'}:
geo_json = connection.execute(func.ST_AsGeoJSON(answer)).scalar()
return json_decode(geo_json)['coordinates']
elif type_constraint_name in {'date', 'time'}:
return maybe_isoformat(answer)
elif type_constraint_name == 'decimal':
return float(answer)
elif type_constraint_name == 'multiple_choice':
question_choice = question_choice_select(connection, answer)
return question_choice.choice
else:
return answer
def _data_formatter(record: tuple) -> list:
title, num, latest_sub, survey_id = record
return [
title,
str(num),
# created_on.isoformat(),
maybe_isoformat(latest_sub),
survey_id
]
