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checking that generated bundle set fits exam form item size limit

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This commit is contained in:
Joshua Burman 2022-02-09 16:45:38 -05:00
parent ab9b5525a4
commit f15f9e604e
1 changed files with 22 additions and 2 deletions
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24
app/helpers/solver_helper.py
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@ -2,6 +2,8 @@ from pulp import lpSum
from random import randint, sample
import logging
from models.bundle import Bundle
from lib.errors.item_generation_error import ItemGenerationError
def build_constraints(solver_run, problem, items, bundles):
@ -27,9 +29,10 @@ def build_constraints(solver_run, problem, items, bundles):
elif attribute.type == 'bundle':
# TODO: account for many different bundle types, since the id condition in L33 could yield duplicates
if solver_run.bundles != None:
total_bundles = randint(constraint.minimum, constraint.maximum)
selected_bundles = sample(solver_run.bundles, total_bundles)
# total_bundles = randint(constraint.minimum, constraint.maximum)
# selected_bundles = sample(solver_run.bundles, total_bundles, solver_run.bundles)
total_bundle_items = 0
selected_bundles = get_random_bundles(solver_run.total_form_items, solver_run.bundles, int(constraint.minimum), int(constraint.maximum))
for bundle in selected_bundles:
con = dict(zip([item.id for item in solver_run.items],
@ -54,3 +57,20 @@ def build_constraints(solver_run, problem, items, bundles):
except ValueError as error:
logging.error(error)
raise ItemGenerationError("Bundle min and/or max larger than bundle amount provided", error.args[0])
def get_random_bundles(total_form_items: int, bundles: list[Bundle], min: int , max: int, found_bundles = False) -> list[Bundle]:
selected_bundles = None
total_bundle_items = 0
total_bundles = randint(min, max)
while found_bundles == False:
selected_bundles = sample(bundles, total_bundles)
total_bundle_items = sum(bundle.count for bundle in selected_bundles)
if total_bundle_items <= total_form_items:
found_bundles = True
if found_bundles == True:
return selected_bundles
else:
return get_random_bundles(total_form_items, total_bundles - 1, bundles)