68 lines
2.5 KiB
Ruby
68 lines
2.5 KiB
Ruby
# frozen_string_literal: true
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#
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# Copyright (C) 2021 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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class CoursePaceDueDatesCalculator
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attr_reader :course_pace
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def initialize(course_pace)
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@course_pace = course_pace
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end
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def get_due_dates(items, enrollment = nil, start_date: nil)
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due_dates = {}
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# Ensure UTC for calculations against the database values
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enrollment_start_date = enrollment&.start_at || [enrollment&.effective_start_at, enrollment&.created_at].compact.max
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start_date = start_date || enrollment_start_date&.utc&.to_date || course_pace.start_date.to_date
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# We have to make sure we start counting on a day that is enabled
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unless CoursePacesDateHelpers.day_is_enabled?(start_date, course_pace.exclude_weekends, blackout_dates)
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start_date = CoursePacesDateHelpers.first_enabled_day(start_date, course_pace.exclude_weekends, blackout_dates)
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end
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items.each do |item|
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due_date = CoursePacesDateHelpers.add_days(
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start_date,
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item.duration,
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course_pace.exclude_weekends,
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blackout_dates
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)
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# If the course pace hasn't been committed yet we need to group the items from their module_item_id or we will
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# end up grouping them by nil and losing the data for each item as it gets overwritten by the next item.
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key = course_pace.persisted? ? item.id : item.module_item_id
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due_dates[key] = due_date.to_date
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start_date = due_date # The next item's start date is this item's due date
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end
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due_dates
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end
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private
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def blackout_dates
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@blackout_dates ||= course_pace.course.blackout_dates + calendar_event_blackout_dates
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end
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def calendar_event_blackout_dates
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account_codes =
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Account.multi_account_chain_ids([course_pace.course.account.id]).map { |id| "account_#{id}" }
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context_codes = account_codes.append("course_#{course_pace.course.id}")
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CalendarEvent.with_blackout_date.active.for_context_codes(context_codes)
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end
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end
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