79 buyer should be able to checkout

[ambroisegithub]

Implement Buyer Checkout Functionality

Description:

This pull request addresses the user story of enabling buyers to seamlessly complete the checkout process. It ensures that orders are validated, inventory is updated, and accounts are appropriately managed. Additionally, it distinguishes between guest users and registered buyers and applies discounts and coupon codes at checkout.

Acceptance Criteria:

Checkout Request Processing:

Step 1:

• WHEN a POST request for checkout is received, and the requesting user/token is a buyer and the request body is validated.
• THEN the order should be processed.
• Delivery and payment information should be saved to the buyer's account.
• The inventory should be updated.
• An order confirmation should be sent to the frontend to be displayed to the buyer.

Step 2:

• WHEN the request body fails any validation checks or the token is not of the role buyer.
• THEN the appropriate 4XX response message should be sent to the frontend describing the validation error.

Step 3:

• WHEN user/token is not provided.
• THEN return an error message to the frontend asking the user to log in to proceed with checkout.

Developer Notes:

Input Validation:

• All inputs should be validated for sanity.

Order Management:

• The order should be saved to the buyer's account for future use.

User Authentication:

• Ensure that the user is logged in before proceeding with the checkout process.

Inventory Management:

• Update the inventory to reflect the items ordered.

Related Issues:

#77
#54
#75
#57

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 93.89313% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 89.99%. Comparing base (48b2d73) to head (e53d0ba).
Report is 1 commits behind head on develop.

Files	Patch %	Lines
src/utilis/couponCalculator.ts	63.63%	4 Missing ⚠️
src/controller/userController.ts	85.71%	0 Missing and 2 partials ⚠️
src/controller/cartController.ts	98.21%	0 Missing and 1 partial ⚠️
src/middlewares/errorHandler.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #87      +/-   ##
===========================================
+ Coverage    89.52%   89.99%   +0.46%     
===========================================
  Files           39       43       +4     
  Lines          983     1109     +126     
  Branches       116      126      +10     
===========================================
+ Hits           880      998     +118     
- Misses          89       94       +5     
- Partials        14       17       +3     

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[bertrandshema]

It is all good!

[ambroisegithub]