Reduce GetStatement complexity in MerchantStatementForDateAggregateExtensions

[Copilot]

Codacy flagged MerchantStatementForDateAggregateExtensions.GetStatement for exceeding the method line limit. This change keeps the existing statement projection behavior intact while reducing the method to a small coordinator.

• Refactor statement line projection

  • Extract the repeated line-building loops from GetStatement into a private generic helper.
  • Centralize MerchantStatementLine construction in a single factory method.

• Replace implicit line type literals

  • Introduce private named constants for transaction, settled fee, deposit, and withdrawal line types.
  • Keep the existing serialized values unchanged while making the mapping easier to scan.

• Add focused regression coverage

  • Add a test that exercises GetStatement(true) with all four line sources and asserts the expected line types, amounts, and timestamps.

Example of the refactored shape:

if (includeStatementLines)
{
    merchantStatement.AddStatementLines(aggregate.Transactions, transaction => transaction.Amount, transaction => transaction.DateTime, TransactionLineType);
    merchantStatement.AddStatementLines(aggregate.SettledFees, settledFee => settledFee.Amount, settledFee => settledFee.DateTime, SettledFeeLineType);
    merchantStatement.AddStatementLines(aggregate.Deposits, deposit => deposit.Amount, deposit => deposit.DepositDateTime, DepositLineType);
    merchantStatement.AddStatementLines(aggregate.Withdrawals, withdrawal => withdrawal.Amount, withdrawal => withdrawal.WithdrawalDateTime, WithdrawalLineType);
}

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• f.feedz.io
  • Triggering command: /usr/bin/dotnet dotnet test /home/REDACTED/work/TransactionProcessor/TransactionProcessor/TransactionProcessor.Aggregates.Tests/TransactionProcessor.Aggregates.Tests.csproj --filter MerchantStatementForDateAggregateTests -nologo (dns block)
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.24.3/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp /opt/hostedtoolcache/CodeQL/2.24.3/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/TransactionProcessor/TransactionProcessor/TransactionProcessor.sln --packages /tmp/codeql-scratch-7ae8d40573b4aa77/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/tmp/codeql-scratch-7ae8d40573b4aa77/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/tmp/codeql-scratch-7ae8d40573b4aa77/dbs/csharp/working/emptyFakeDotnetRoot /p:AllowMissingPrunePackageData=true (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
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Original prompt

---

This section details on the original issue you should resolve

<issue_title>[Complexity] Method MerchantStatementForDateAggregateExtensions::GetStatement has 57 lines of code (limit is 50)</issue_title>
<issue_description>Codacy ID: 88759db3bac3fc19812580332a838109

File: TransactionProcessor.Aggregates/MerchantStatementForDateAggregate.cs
Line: 163
Rule: Complexity (Warning)
Commit: 5b8f3e64d731c7b181b225e9d4117fda74faa3ac

Message: Method MerchantStatementForDateAggregateExtensions::GetStatement has 57 lines of code (limit is 50)

**Code Snippet:**
```csharp
    public static MerchantStatementForDate GetStatement(this MerchantStatementForDateAggregate aggregate, Boolean includeStatementLines = false) 
```

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [Complexity] Method MerchantStatementForDateAggregateExtensions::GetStatement has 57 lines of code (limit is 50) #1417

---

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[StuartFerguson]

@copilot build failed can you have a look please

[Copilot]

@copilot build failed can you have a look please

Fixed in 3d63a8c. The PR build was failing because the new test referenced TestData.EventId2, EventId3, and EventId4, which do not exist. I replaced those with locally generated event IDs in the test so the project compiles again.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• f.feedz.io
  • Triggering command: /usr/bin/dotnet dotnet build /home/REDACTED/work/TransactionProcessor/TransactionProcessor/TransactionProcessor.Aggregates.Tests/TransactionProcessor.Aggregates.Tests.csproj --no-restore -nologo (dns block)
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.24.3/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp /opt/hostedtoolcache/CodeQL/2.24.3/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/TransactionProcessor/TransactionProcessor/TransactionProcessor.sln --packages /tmp/codeql-scratch-7ae8d40573b4aa77/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/tmp/codeql-scratch-7ae8d40573b4aa77/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/tmp/codeql-scratch-7ae8d40573b4aa77/dbs/csharp/working/emptyFakeDotnetRoot /p:AllowMissingPrunePackageData=true (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)