fix: print sdk warnings to stderr instead of stdout

[ChiragAgg5k]

What does this PR do?

fixes the stdout issue

Test Plan

Related PRs and Issues

Have you read the Contributing Guidelines on issues?

yes.

Summary by CodeRabbit

• Bug Fixes
  • Runtime warnings are now written to standard error instead of standard output across Android, Kotlin, Swift (Apple), Swift, .NET, and Python clients. This keeps standard output clean for pipelines and improves compatibility with logging and shell scripting. Behavior and response handling remain unchanged aside from the output stream. No public API changes.

[coderabbitai]

Walkthrough

This change updates multiple client templates to emit HTTP response warning messages to standard error instead of standard output. The affected templates are: Android (Kotlin) library, Apple Swift, .NET C#, Kotlin, Python, and Swift. Implementations replace stdout printing with stderr equivalents (e.g., System.err, Console.Error, fputs to stderr, sys.stderr). The Python template adds an import of sys for stderr usage. No public/exported API signatures are modified; control flow and response handling logic remain the same.

Possibly related PRs

• appwrite/sdk-for-php#44 - write warnings to error log instead of stdout #1176: Adjusts client templates to route response warnings from stdout to stderr, modifying the same warning-emission paths.

Suggested reviewers

• loks0n

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 "fix: print sdk warnings to stderr instead of stdout" is a concise, single-sentence summary that directly reflects the primary change across multiple client templates which redirect warning output from stdout to stderr, so it accurately describes the main change and is clear to reviewers.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch pla-3492

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[Copilot]

Pull Request Overview

This PR fixes SDK warning messages to output to stderr instead of stdout across multiple platform client templates. This change ensures that warning messages don't interfere with standard program output, which is a best practice for diagnostic messages.

Key changes:

• Updated warning output methods in client templates for Swift, Python, Kotlin, .NET, and Android
• Added necessary imports where required (sys module in Python)
• Maintained consistent warning message format while redirecting output stream

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
templates/swift/Sources/Client.swift.twig	Changed from print() to fputs() with stderr
templates/python/package/client.py.twig	Added sys import and updated print to use stderr
templates/kotlin/src/main/kotlin/io/appwrite/Client.kt.twig	Changed from println() to System.err.println()
templates/dotnet/Package/Client.cs.twig	Changed from Console.WriteLine() to Console.Error.WriteLine()
templates/apple/Sources/Client.swift.twig	Changed from print() to fputs() with stderr
templates/android/library/src/main/java/io/package/Client.kt.twig	Changed from println() to System.err.println()

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (4)

templates/swift/Sources/Client.swift.twig (1)

353-354: LGTM; optional: prefer FileHandle.standardError for portability.

Avoids Darwin/Glibc imports on some platforms. Equivalent behavior:

-                fputs("Warning: \(warning)\n", stderr)
+                FileHandle.standardError.write(Data("Warning: \(warning)\n".utf8))

templates/python/package/client.py.twig (1)

99-103: LGTM; minor nit: trim warning fragments.

Safer if the header contains spaces around semicolons:

-                    print(f'Warning: {warning}', file=sys.stderr)
+                    print(f'Warning: {warning.strip()}', file=sys.stderr)

templates/dotnet/Package/Client.cs.twig (1)

292-298: Split multi-warning header values for parity with other SDKs (optional).

Current code prints the whole header value if multiple warnings are semicolon-separated. For consistency:

-            if (response.Headers.TryGetValues("x-{{ spec.title | lower }}-warning", out var warnings))
-            {
-                foreach (var warning in warnings)
-                {
-                    Console.Error.WriteLine("Warning: " + warning);
-                }
-            }
+            if (response.Headers.TryGetValues("x-{{ spec.title | lower }}-warning", out var warnings))
+            {
+                foreach (var headerValue in warnings)
+                {
+                    foreach (var warning in headerValue.Split(';', StringSplitOptions.RemoveEmptyEntries))
+                    {
+                        Console.Error.WriteLine("Warning: " + warning.Trim());
+                    }
+                }
+            }

templates/apple/Sources/Client.swift.twig (1)

305-309: LGTM; optional: prefer FileHandle.standardError for portability.

Equivalent change:

-                fputs("Warning: \(warning)\n", stderr)
+                FileHandle.standardError.write(Data("Warning: \(warning)\n".utf8))

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 3583fa6 and 4728ccd.

📒 Files selected for processing (6)

• templates/android/library/src/main/java/io/package/Client.kt.twig (1 hunks)
• templates/apple/Sources/Client.swift.twig (1 hunks)
• templates/dotnet/Package/Client.cs.twig (1 hunks)
• templates/kotlin/src/main/kotlin/io/appwrite/Client.kt.twig (1 hunks)
• templates/python/package/client.py.twig (2 hunks)
• templates/swift/Sources/Client.swift.twig (1 hunks)

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• GitHub Check: build (8.3, Ruby31)
• GitHub Check: build (8.3, AppleSwift56)
• GitHub Check: build (8.3, WebNode)
• GitHub Check: build (8.3, Python310)
• GitHub Check: build (8.3, WebChromium)
• GitHub Check: build (8.3, Swift56)
• GitHub Check: build (8.3, Go112)
• GitHub Check: build (8.3, Node18)
• GitHub Check: build (8.3, Python313)
• GitHub Check: build (8.3, Node16)
• GitHub Check: build (8.3, DartBeta)
• GitHub Check: build (8.3, Android5Java17)
• GitHub Check: build (8.3, DartStable)
• GitHub Check: build (8.3, CLINode16)
• GitHub Check: build (8.3, Android14Java17)

🔇 Additional comments (3)

templates/python/package/client.py.twig (1)

5-5: LGTM: sys import is needed for stderr.

templates/kotlin/src/main/kotlin/io/appwrite/Client.kt.twig (1)

556-556: LGTM: warnings now go to stderr.

templates/android/library/src/main/java/io/package/Client.kt.twig (1)

510-511: LGTM: Android now writes warnings to stderr.