Resolve Unauthorized Errors and Enhance Basket Creation Flow

[cheesea3]

Users are experiencing an interruption in the checkout process, particularly stuck at "loading or creating your basket..." with unauthorized errors when the system is attempting to create a basket or add packages to the basket. The system sometimes incorrectly indicates that a package has already been added, leading to a failure in advancing the checkout process.

Symptoms:

• After logging in and ensuring a username is set along with a linked Steam account, users attempting to proceed with purchases encounter "Failed to load resource: the server responded with a status of 401 (Unauthorized)."
• Despite these errors, messages indicate that the user already has a package added to the basket.

Suspected Issues:

• Possible session management or cookie handling errors that may not correctly recognize or validate the user's current session as authorized to modify the basket.
• Potential discrepancies in how the basket's existence or contents are checked, leading to false positives for already added items or existing baskets.

Relevant Code Insights:

• CheckoutProcess.tsx handles the checkout process but seems to encounter issues with basket creation (createBasket) and package addition (addPackageToBasket) due to unauthorized responses.
• store.add.tsx and store.create.tsx indicate possible issues with session or cookie management, where necessary credentials or identifiers might not be transmitted or checked correctly.

Steps to Reproduce:

1. Log in to the platform.
2. Run through username and steam account onboarding if necessary.
3. Observe the system attempt to automatically add a package to the basket or initiate the checkout process.
4. Observe that the process does not advance past the basket creation stage, with unauthorized errors logged.

Proposed Actions:

1. Review and Test Session and Cookie Management: Ensure that sessions and cookies are correctly established, transmitted, and validated throughout the checkout process.
2. Audit Basket and Package Management Logic: Verify the logic that checks for existing baskets and packages to ensure it accurately reflects the user's current state and interactions.
3. Enhanced Error Handling and Messaging: Implement clearer error handling and user feedback for issues encountered during the checkout process to aid in troubleshooting and user guidance.
4. Security and Authorization Review: Conduct a thorough review of security practices related to user authorization and resource access within the checkout flow.

Expected Outcome:

Implementing these changes should result in a smooth, uninterrupted checkout process where users can reliably add packages to their baskets and proceed to checkout without erroneous unauthorized errors or incorrect basket contents messages.

Additional Notes:

This issue is critical as it directly impacts the revenue stream and user experience, making it a high priority for immediate investigation and resolution. Especially since the community is highly anticipating the advent of the store so they can leverage our premium offerings.