Read the following document carefully.
It contains important information about the task itself and how to submit your solution.

Task overview

Create an implementation of the IOrderAPI to import orders from the Shopify ReST API.

Priorities:

• The Implementation can be used with any access token (no hardcoded strings etc.)
• If possible: All fields in the models should be filled by the implementation
• Calculated prices are correct
• Tax is correct calculated
• Discounts (per position) should set to the OrderItem.Discount property.
• The calculated total of the order must be equal to the Order.TotalCost (gross) which comes from the external system.
• Don't add any NuGet Packages
• Use the MinimalOrderApi/RestClientBaseClass.cs to consume the ReST API

IOrderAPI.GetOrderList

This method is used for querying a list of orders which are created or modified after the the startDate. vatRateRegular and vatRateReduced are the default vat rates of the client. You can use this for calculating the tax amount if the API doesn't provide this information. you also need those to specify Order.TaxRateRegular, Order.TaxRateReduced and OrderItem.TaxIndex.

Possible values for the tax index:

• 0 = No vat applicable
• 1 = Regular vat
• 2 = Reduced vat.

totalNumberOfOrders and totalNumberOfPages: This parameters are used for pagination. Set them to the corresponding values.

IOrderAPI.DeserializeAccessToken and IOrderAPI.SerializeAccessToken

IOrderAPI.DeserializeAccessToken is called by the client before IOrderAPI.GetOrderList. Use this to setup your implementation for any api related authorization.

IOrderAPI.SerializeAccessToken is called by the client to retrieve the current access token. Return a new token if the access token can expire.

How to start

1. Download the source of this repository

   $ git clone https://github.com/billbeeio/order-api-implementation-test.git
   $ cd order-api-implementation-test
   $ git remote remove origin
   $ git checkout -b my-implementation

2. Create a implementation class {NameOfTheImplementation}Api inside the Billbee.MinimalOrderApi.Implementation namespace.
3. Edit the Program.cs and set the variables:

   IOrderAPI api = null; // Your implementation
   string accessToken = null; // Your access token

4. Add the logic to your implementation.
5. Run the console application to test your implementation.

HTTP Interaction

To interact with a HTTP service, your implementation should derive from the RestClientBaseClass.

Submit your solution

1. Commit your changes using git commit
2. Create a zip of the changed files using the following command in the git bash:

   $ git archive --format=zip HEAD `git diff master HEAD --name-only` > `git branch --show-current`.zip

3. Send the generated zip file (named as {BranchName}.zip) attached to a mail to your contact at Billbee.