Module: Auth::Concerns::Shopping::DiscountConcern::ClassMethods

Defined in:
app/models/auth/concerns/shopping/discount_concern.rb

Instance Method Summary collapse

Instance Method Details

#add_pending_discount(payment_id, discount_object_id) ⇒ Object

@param payment_id @return the document after the update or nil, in case nothing was updated.



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# File 'app/models/auth/concerns/shopping/discount_concern.rb', line 215

def add_pending_discount(payment_id,discount_object_id)
	Auth.configuration.discount_class.constantize.
	where({
		"$and" => [
			{
				"verified" => {
					"$ne" => payment_id
				}
			},
			{
				"pending" => {
					"$ne" => payment_id
				}
			},
			{
				"declined" => {
					"$ne" => payment_id
				}
			},
			{
				"_id" => BSON::ObjectId(discount_object_id)
			}
		]
	})
	.find_one_and_update(
		{
			"$push" => {
				:pending => payment_id
			}
		},
		{
			:return_document => :after	
		}
	)
end

#find_discounts(options) ⇒ Object 



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# File 'app/models/auth/concerns/shopping/discount_concern.rb', line 205

def find_discounts(options)
	conditions = {:resource_id => nil}
	conditions[:resource_id] = options[:resource].id.to_s if options[:resource]
	Auth.configuration.discount_class.constantize.where(conditions)
end

#get_payment_status(payment, discount_object_id) ⇒ Object

@param payment_id : the id of the payment @param discount_object_id : the id of the discount object @return payment_status: returns the status that should be set for the payment. @working: this def will match a discount object with the provided, id, and then filter the resulting fields to include any of the three arrays “pending”,“verified” or “declined” as long as they contain the payment id. It will return a payment_status that is to be set for the payment, based on teh result. If it finds that none of the arrays contain the payment id, then it will do a find and update to add the payment_id to the pending_array.



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# File 'app/models/auth/concerns/shopping/discount_concern.rb', line 257

def get_payment_status(payment,discount_object_id)



	results = Auth.configuration.discount_class.constantize.collection.aggregate([

		{
			"$match" => {
			"_id" => BSON::ObjectId(discount_object_id)
			}
		},
		{
			"$project" => {
				"verified" => {
					"$filter" => {
	                 	"input" => "$verified",
	                 	"as" => "verified",
	                 	"cond" => { 
	                 		"$eq" => 
	                 			[ "$$verified", payment.id.to_s 
	                 			] 
	                 	}
	            	}
				},
				"pending" => {
					"$filter" => {
	                 	"input" => "$pending",
	                 	"as" => "pending",
	                 	"cond" => { 
	                 		"$eq" => 
	                 			[ "$$pending", payment.id.to_s 
	                 			] 
	                 	}
	            	}
				},
				"declined" => {
					"$filter" => {
	                 	"input" => "$declined",
	                 	"as" => "declined",
	                 	"cond" => { 
	                 		"$eq" => 
	                 			[ "$$declined", payment.id.to_s 
	                 			] 
	                 	}
	            	}
				}
			}
		}

	])

	results_as_mongoid_docs = []

	results.each do |r|
		results_as_mongoid_docs << Mongoid::Factory.from_db(Auth.configuration.discount_class.constantize,r)
	end

	if results_as_mongoid_docs.empty?
		## this discont object does not exist
		## return 0
		#puts "------------------------there was no such discount object-----------------------------"
		0
	elsif !results_as_mongoid_docs[0].verified.empty?
		## it has been verified
		## so return 1
		puts "it has been verified"
		1
	elsif !results_as_mongoid_docs[0].declined.empty?
		## it has been declined
		## so return 0
		puts "it has been declined"
		0
	elsif !results_as_mongoid_docs[0].pending.empty?
		## it has not yet been acted on
		## so return nil
		puts "it is still pending."
		nil 
	else
		## it has to still be added
		## so in this case also the payment status will remain nil
		## but this has to indicate that it should be still added.
		## execute a find_and_update, where the payment id is not present in any of the three arrays, and then add it to the pending array.
		puts "came to add pending discount."
		doc_after = self.add_pending_discount(payment.id.to_s,discount_object_id)
		return 0 unless doc_after
		return nil
	end

end

#use_discount(discount, payment, enforce_single_use = true) ⇒ Object

decrements the count by 1 if enforce_single_use is passed as false, a given user can utilize the discount any number of times. checks that the count of the discount_object is greater than one before doing this. returns the updated document after the update is complete. if the document returned afterwards is nil, then it means that the payment_status will be set as failed. otherwise, set the payment_status as 1.



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# File 'app/models/auth/concerns/shopping/discount_concern.rb', line 355

def use_discount(discount,payment,enforce_single_use = true)

	## so we can check here if the cart has any items pending, before running this.
	## so we can only use the discount if all cart items are accepted
	if discount.cart_id
		discount.cart_can_create_discount_coupons
	end

	if discount.errors.full_messages.empty?
	
		query_hash = {
			:_id => discount.id.to_s,
			:pending => {"$ne" => payment.id.to_s},
			:declined => {"$ne" => payment.id.to_s},
			:count => {"$gte" => 1}
		}
		if enforce_single_use == true
			query_hash[:used_by_users => {"$ne" => payment.resource_id.to_s}]
		end
		updated_doc = Auth.configuration.discount_class.constantize.where(query_hash).find_one_and_update({
				"$inc" => {
					:count => -1
				},
				"$push" => {
					:used_by_users => payment.resource_id.to_s
				}
			},
			{
				:return_document => :after
			}
		)

		return 0 if updated_doc.nil?
		return 1

	else
		return 0
	end

end