feat(genaisdk): update samples nested objects for better readability

[CadillacBurgess1]

Description

Fixes #

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Checklist

• I have followed Contributing Guidelines from CONTRIBUTING.MD
• Tests pass: go test -v ./.. (see Testing)
• Code formatted: gofmt (see Formatting)
• Vetting pass: go vet (see Formatting)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[gemini-code-assist]

Hello @CadillacBurgess1, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

This pull request focuses on improving the readability of the content cache samples in the genaisdk by adjusting the structure of nested objects within the code. Specifically, the changes involve reformatting the cacheContents and SystemInstruction configurations in contentcache_create_with_txt_gcs_pdf.go to enhance clarity. Additionally, a minor update was made to the license URL in contentcache_delete.go.

Highlights

• Code Readability: The primary focus is to enhance the readability of the code by restructuring nested objects, particularly within the createContentCache function.
• Configuration Changes: The cacheContents and SystemInstruction configurations in contentcache_create_with_txt_gcs_pdf.go have been modified to improve clarity.
• License URL Update: A minor update was made to the license URL in contentcache_delete.go to ensure it points to the correct location.

Changelog

• genai/content_cache/contentcache_create_with_txt_gcs_pdf.go
  • Reformatted the cacheContents array to improve readability by explicitly labeling each FileData part.
  • Restructured the CreateCachedContentConfig to enhance clarity, specifically for Contents and SystemInstruction.
  • Added comments to delineate parts within the cacheContents array for better understanding.
• genai/content_cache/contentcache_delete.go
  • Updated the license URL from https://www.apache.org/licenses/LICENSE-2.0 to https://www.apache.org/licenses/LICENSE-2.0.

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---

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Where nested forms can often hide.
A touch of grace,
A structured space,
For minds to wander, side by side.

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[gemini-code-assist]

Code Review

The pull request updates the samples for nested objects, aiming for better readability. The changes primarily involve reformatting the structure of the cacheContents in contentcache_create_with_txt_gcs_pdf.go to improve clarity. Overall, the changes seem reasonable and contribute to better code organization.

Summary of Findings

• MIME Type Consistency: The MIME type string literal should be defined as a constant to avoid duplication and potential typos. This applies to both contentcache_create_with_txt_gcs_pdf.go and other files where MIME types are used.
• Code Comment Style: The code comments Part 1 and Part 2 are useful, but consider standardizing the comment style across the codebase for consistency.
• HTTP Option Struct Initialization: The initialization of the HTTPOptions struct can be simplified by directly assigning the APIVersion field during struct creation.

Merge Readiness

The pull request is in good shape and improves the readability of the code. However, addressing the comments regarding MIME type consistency and HTTP option struct initialization would further enhance the quality of the code. I am unable to directly approve this pull request, and recommend that others review and approve this code before merging. At a minimum, the high severity issues should be addressed before merging.

[gemini-code-assist]

Consider defining application/pdf as a constant to avoid duplication and potential typos. This could be defined at the package level, e.g., const pdfMIMEType = "application/pdf".

FileData: &genai.FileData{
						FileURI:  "gs://cloud-samples-data/generative-ai/pdf/2312.11805v3.pdf",
						MIMEType: pdfMIMEType, // Use the constant here
					},

[gemini-code-assist]

Consider defining application/pdf as a constant to avoid duplication and potential typos. This could be defined at the package level, e.g., const pdfMIMEType = "application/pdf".

FileData: &genai.FileData{
						FileURI:  "gs://cloud-samples-data/generative-ai/pdf/2403.05530.pdf",
						MIMEType: pdfMIMEType, // Use the constant here
					},

[gemini-code-assist]

Consider initializing the HTTPOptions struct directly with the APIVersion to improve readability and conciseness.

For example:

HTTPOptions: genai.HTTPOptions{APIVersion: "v1"},

HTTPOptions: genai.HTTPOptions{
			APIVersion: "v1",
			},

[gemini-code-assist]

Consider initializing the HTTPOptions struct directly with the APIVersion to improve readability and conciseness.

For example:

HTTPOptions: genai.HTTPOptions{APIVersion: "v1"},

HTTPOptions: genai.HTTPOptions{
			APIVersion: "v1",
			},

[telpirion]

Hey @CadillacBurgess1 -- If you're still working on this PR, let's switch it to a draft. Thanks!