Make CreateSessionKey parameters optional with defaults

[0xFirekeeper]

Updated the CreateSessionKey method to provide default values for its parameters, allowing them to be optional. This improves usability by enabling callers to omit parameters, which will then be set to sensible defaults within the method.

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PR-Codex overview

This PR focuses on updating the CreateSessionKey method in the SmartWallet class to allow optional parameters with default values, enhancing flexibility when creating session keys.

Detailed summary

• Changed parameters in CreateSessionKey to have default values (set to null).
• Updated the assignment of ApprovedTargets to use a default list if approvedTargets is null.
• Adjusted parsing for other parameters to handle null values, providing default fallbacks.

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Summary by CodeRabbit

• New Features
  • SmartWallet session key creation is now more flexible. The CreateSessionKey method's parameters are now optional with intelligent defaults: approved targets default to all addresses, transaction limits default to unlimited, permission start times default to immediate, and permission validity windows default to 10 years.

[coderabbitai]

Walkthrough

The CreateSessionKey method in SmartWallet now has optional parameters with null defaults for approval targets, token limits, and timestamp boundaries. When null, these parameters receive sensible defaults: ApprovedTargets defaults to ADDRESS_ZERO, numeric limits default to 0, and timestamp boundaries default to 0 or 10-year Unix timestamps.

Changes

Cohort / File(s)	Summary
SmartWallet method signature update Thirdweb/Thirdweb.Wallets/SmartWallet/SmartWallet.cs	Made six parameters optional in CreateSessionKey method by adding null defaults: approvedTargets, nativeTokenLimitPerTransactionInWei, permissionStartTimestamp, permissionEndTimestamp, reqValidityStartTimestamp, and reqValidityEndTimestamp. Implemented null-coalescing logic to assign default values during session key request construction.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Verify null-coalescing defaults are semantically correct for each parameter
• Confirm that ADDRESS_ZERO is the appropriate default for ApprovedTargets
• Validate that 10-year Unix timestamp calculations are accurate and intentional
• Check that the method's documented behavior reflects the new optional parameters

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'Make CreateSessionKey parameters optional with defaults' clearly and concisely describes the main change: making method parameters optional with default values.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch firekeeper/session-key-dx

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[coderabbitai]

Actionable comments posted: 1

🧹 Nitpick comments (1)

Thirdweb/Thirdweb.Wallets/SmartWallet/SmartWallet.cs (1)

393-402: Update XML documentation to reflect optional parameters and their defaults.

The documentation should indicate that parameters beyond signerAddress are optional and describe the default values applied when omitted. This helps developers discover the simplified API.

Consider updating the XML comments like this:

     /// <summary>
     /// Creates a new session key for a signer to use with the smart account.
     /// </summary>
     /// <param name="signerAddress">The address of the signer to create a session key for.</param>
-    /// <param name="approvedTargets">The list of approved targets for the signer. Use a list of a single Constants.ADDRESS_ZERO to enable all contracts.</param>
-    /// <param name="nativeTokenLimitPerTransactionInWei">The maximum amount of native tokens the signer can send in a single transaction.</param>
-    /// <param name="permissionStartTimestamp">The timestamp when the permission starts. Can be set to zero.</param>
-    /// <param name="permissionEndTimestamp">The timestamp when the permission ends. Make use of our Utils to get UNIX timestamps.</param>
-    /// <param name="reqValidityStartTimestamp">The timestamp when the request validity starts. Can be set to zero.</param>
-    /// <param name="reqValidityEndTimestamp">The timestamp when the request validity ends. Make use of our Utils to get UNIX timestamps.</param>
+    /// <param name="approvedTargets">Optional. The list of approved targets for the signer. Defaults to Constants.ADDRESS_ZERO (enables all contracts) if null.</param>
+    /// <param name="nativeTokenLimitPerTransactionInWei">Optional. The maximum amount of native tokens the signer can send in a single transaction. Defaults to "0" if null.</param>
+    /// <param name="permissionStartTimestamp">Optional. The timestamp when the permission starts. Defaults to "0" (immediate) if null.</param>
+    /// <param name="permissionEndTimestamp">Optional. The timestamp when the permission ends. Defaults to 10 years in the future if null.</param>
+    /// <param name="reqValidityStartTimestamp">Optional. The timestamp when the request validity starts. Defaults to "0" (immediate) if null.</param>
+    /// <param name="reqValidityEndTimestamp">Optional. The timestamp when the request validity ends. Defaults to 10 years in the future if null.</param>

📜 Review details

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📥 Commits

Reviewing files that changed from the base of the PR and between b3d8f69 and 28f004d.

📒 Files selected for processing (1)

• Thirdweb/Thirdweb.Wallets/SmartWallet/SmartWallet.cs (2 hunks)

🧰 Additional context used

🧬 Code graph analysis (1)

Thirdweb/Thirdweb.Wallets/SmartWallet/SmartWallet.cs (2)

Thirdweb/Thirdweb.Utils/Utils.cs (2)

• Utils (24-1207)
• GetUnixTimeStampIn10Years (213-216)

Thirdweb/Thirdweb.Utils/Constants.cs (1)

• Constants (3-55)

🔇 Additional comments (1)

Thirdweb/Thirdweb.Wallets/SmartWallet/SmartWallet.cs (1)

405-410: LGTM! Well-designed optional parameters.

The parameter defaults are backward-compatible and improve usability by allowing callers to omit commonly-defaulted values.