Add new identity Holder snippets

[cy245]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @cy245, 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!

This pull request integrates foundational support for digital credential management within the identity module. It updates the build configuration to include necessary dependencies and provides a comprehensive set of code snippets for developers to implement features related to OpenID4VP, SD-JWT, and mDOC credentials, enabling the creation, registration, and handling of digital credentials.

Highlights

• New Digital Credential Dependencies: Added new version references and library definitions for registryDigitalCredentials components in gradle/libs.versions.toml to support digital credential functionalities.
• Gradle Build Configuration Update: Included new implementation dependencies in identity/credentialmanager/build.gradle.kts for the digital credential registry, provider, and Play Services provider.
• Digital Credential Holder Snippets: Introduced a new Kotlin file, DigitalCredentialHolder.kt, containing various code snippets and helper classes for managing digital credentials, including registry creation, mapping SD-JWT and mDOC entries, credential registration, handling requests, and verifying identity.

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Changelog

• gradle/libs.versions.toml
  • Added a new version reference for registryDigitalCredentials.
  • Defined new library entries for androidx-registry-digitalcredentials, androidx-registry-provider, and androidx-registry-provider-play-services.
• identity/credentialmanager/build.gradle.kts
  • Added implementation dependencies for libs.androidx.registry.digitalcredentials, libs.androidx.registry.provider, and libs.androidx.registry.provider.play.services.
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt
  • Added a new Kotlin file DigitalCredentialHolder.kt.
  • Implemented DigitalCredentialHolderActivity with functions for creating and registering credential registries, mapping stored SD-JWT and mDOC entries, handling selected digital credential requests, checking verifier identity, and returning credential responses.
  • Defined sealed classes StoredSdJwtEntry, StoredMdocEntry, and HolderCredentialResponse to represent data structures for digital credentials.

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[gemini-code-assist]

Code Review

This pull request introduces new dependencies for digital credentials and a new Kotlin file, DigitalCredentialHolder.kt, which provides snippets for handling digital credentials. While the dependency additions are straightforward, the new Kotlin file contains several placeholder implementations, hardcoded values, and potential runtime issues that need to be addressed before this code can be considered production-ready. Specifically, there are broad exception catches, undefined variables, and logic that could lead to crashes or incorrect behavior.

[snippet-bot]

Here is the summary of changes.

You are about to add 10 region tags.

• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:46, tag android_identity_create_registry
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:61, tag android_identity_mapto_sdjwt_entries
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:79, tag android_identity_mapto_mdoc_entries
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:98, tag android_identity_register_credential_entries
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:107, tag android_identity_register_credentials_registrymanager
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:129, tag android_identity_retrieve_getcredential_intent
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:134, tag android_identity_get_credential_origin
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:140, tag android_identity_get_signing_cert_hash
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:151, tag android_identity_get_credential_response
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/DigitalCredentialHolder.kt:160, tag android_identity_get_credential_response_exception

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[vinishavathwani]

Did a perfunctory review, LGTM.

[cy245]

@yrezgui or @kkuan2011 as owners if you could please approve the we can move ahead with the DAC page

[kkuan2011]

is this comment needed if it's not shown in an snippet? (it should be build.gradle.kts instead right?)

[kkuan2011]

I think there's a merge conflict on the version catalog file, other LGTM