fix-37-add-custom-unmarshalJSON-method

[devarsh10]

What does this PR do?

I have added a custom unmarshalJSON method in the preferences.go file. Because earlier, the Go's default decoder used to skip the data field entirely and show nil. Hence, a custom unmarshalJSON method.

Test Plan

1. First reproduced the issue. Got this error,

User ID: <user-id>
User Email: <email-id>
User Prefs: models.Preferences{data:[]uint8(nil)}
User Prefs: map[string]interface {}{}

2. Made the changes, added a custom method, and ran the same main file mentioned in the issue

User ID: <uid>
User Email: <mail>
User Prefs: models.Preferences{data:[]uint8{0x7b ... ... ... 0x7d}}
User Prefs: map[string]interface {}{"Hello":"World"}

Related PRs and Issues

Issue it solves: #37

Have you read the Contributing Guidelines on issues?

Yes

Summary by CodeRabbit

• Chores
  • Enhanced internal preference data handling to improve JSON processing capabilities.

[github-actions]

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[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

A new public method UnmarshalJSON is added to the Preferences type in models/preferences.go. The method accepts a byte slice containing JSON data, copies it into the struct's data field, and returns nil. This enables the Preferences struct to implement the standard JSON unmarshalling hook while preserving raw JSON bytes for subsequent processing by the existing Decode method.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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