oopcodecom / discounts

Discounts Service

Description:

This is one of the way how to realize multiple discount system. Everything is based on DiscountRuleInterface. This is something very close with Rule Engine, but more simple.

In DiscountManager\Rule you can find available rules. Every rule are stored in db:table rules. You can use any rule and create own Discount (db:table discounts) with different rule value, discount amount and product category target. That is providing scalability, in database you can create, deactivate or update discounts based on available rules.

When system will receive a request with Order, DiscountManager will get all active Discounts (db:table discounts) and it will run every rule of every discount, this rules will calculate and return a discount.

Then DiscountManager will save a total discount for order in db:table discount_history and every applied discount in discount db:table applied_discounts. This data will be serialized and returned as clear and informative response.

Requirements:

Docker version 1.10.0+

docker-compose version 1.17.1+

for local usage need to turn off your apache2 and mysql services

Installation:

1. linux terminal: git clone https://github.com/bog-h/discounts.git
2. Add in your hosts file a new host: 127.0.0.1 discounts.local
3. linux terminal: CD to your cloned folder and run command "./build.sh"

extra: sometime build.sh can fail on Refuse Connection, this is not resolved yet, please just rerun "./build.sh"

How to run?

1. Open http://discounts.local/api/doc/ (this is a page of installed and configured NelmioApiDocBundle)
2. Press on row "POST /api/calculate-discount-for-order Calculate discount for customer order"
3. Press Try it out
4. Press Execute
5. Receive a response

extra: please stop your apache and mysql services if you have.

You can execute different json examples like multiple-discounts.json from request-examples folder

Warning - This is only abstraction

Use this code only for exploring, a lot of things are missed like Real API communication channel, Order deserialization, Assertions, e.t.c.