Implement the purchase agreement workflow and confirmation process

[wekesa360]

Implement the Purchase Agreement Workflow and Confirmation Process (Backend)

Description

This issue focuses on implementing the purchase agreement workflow and confirmation process on the backend of the Comrade Marketplace. The goal is to provide a secure and transparent mechanism for buyers and sellers to initiate, negotiate, and finalize purchase agreements.

Tasks

Design the Purchase Agreement Workflow

• Define the steps and interactions involved in the purchase agreement process, including:
  • Buyer initiates a purchase agreement for a specific product
  • Seller reviews and responds to the purchase agreement
  • Buyer and seller negotiate the agreement details (e.g., price, delivery, inspection)
  • Both parties confirm the completion of the purchase agreement

Implement the Purchase Agreement Model

• Create a PurchaseAgreement model to store the necessary information, such as:
  • Buyer and seller details
  • Product information
  • Agreement details (e.g., agreed price, delivery method)
  • Agreement status (pending, accepted, rejected)
  • Timestamps for agreement creation and updates

Develop the Purchase Agreement Views and Logic

• Implement the backend views and logic to handle the creation, retrieval, and update of purchase agreements
• Ensure that only authorized users (buyers and sellers) can access and interact with the purchase agreements
• Implement the business rules and validations to ensure the integrity of the purchase agreement workflow

Implement the Purchase Confirmation Process

• Develop the functionality to allow both the buyer and the seller to confirm the completion of a purchase agreement
• Update the product's availability status based on the confirmed purchase
• Persist in the completed purchase agreement details, including the buyer, seller, and product information

Provide Notifications and Reporting

• Implement a mechanism to notify the buyer and the seller about the status changes of the purchase agreement
• Allow users to view the history of their past purchase agreements and completed transactions

Acceptance Criteria

• The purchase agreement workflow is designed and implemented correctly on the backend
• Buyers and sellers can initiate, negotiate, and confirm purchase agreements through the platform
• The purchase confirmation process updates the product availability and persists the transaction details
• Notifications are sent to the parties involved in the purchase agreement process

Dependencies

• Implement the Product and CustomUser models
• Implement the product listing and management features

Resources

• Django model and view design best practices
• Industry standards and guidelines for e-commerce purchase workflows
• Best practices for secure and transparent purchase agreement processes