1: Merchant Bulk Discounts Index

As a merchant
When I visit my merchant dashboard
Then I see a link to view all my discounts
When I click this link
Then I am taken to my bulk discounts index page
Where I see all of my bulk discounts including their
percentage discount and quantity thresholds
And each bulk discount listed includes a link to its show page

2: Merchant Bulk Discount Create

As a merchant
When I visit my bulk discounts index
Then I see a link to create a new discount
When I click this link
Then I am taken to a new page where I see a form to add a new bulk discount
When I fill in the form with valid data
Then I am redirected back to the bulk discount index
And I see my new bulk discount listed

3: Merchant Bulk Discount Delete

As a merchant
When I visit my bulk discounts index
Then next to each bulk discount I see a button to delete it
When I click this button
Then I am redirected back to the bulk discounts index page
And I no longer see the discount listed

4: Merchant Bulk Discount Show

As a merchant
When I visit my bulk discount show page
Then I see the bulk discount's quantity threshold and percentage discount

5: Merchant Bulk Discount Edit

As a merchant
When I visit my bulk discount show page
Then I see a link to edit the bulk discount
When I click this link
Then I am taken to a new page with a form to edit the discount
And I see that the discounts current attributes are pre-poluated in the form
When I change any/all of the information and click submit
Then I am redirected to the bulk discount's show page
And I see that the discount's attributes have been updated

6: Merchant Invoice Show Page: Total Revenue and Discounted Revenue

As a merchant
When I visit my merchant invoice show page
Then I see the total revenue for my merchant from this invoice (not including discounts)
And I see the total discounted revenue for my merchant from this invoice which includes bulk discounts in the calculation

Note: We encourage you to use as much ActiveRecord as you can, but some Ruby is okay. Instead of a single query that sums the revenue of discounted items and the revenue of non-discounted items, we recommend creating a query to find the total discount amount, and then using Ruby to subtract that discount from the total revenue.

For an extra spicy challenge: try to find the total revenue of discounted and non-discounted items in one query!

7: Merchant Invoice Show Page: Link to applied discounts

As a merchant
When I visit my merchant invoice show page
Next to each invoice item I see a link to the show page for the bulk discount that was applied (if any)

8: Admin Invoice Show Page: Total Revenue and Discounted Revenue

As an admin
When I visit an admin invoice show page
Then I see the total revenue from this invoice (not including discounts)
And I see the total discounted revenue from this invoice which includes bulk discounts in the calculation