feat: sync with openiap v1.3.17

[hyochan]

Summary

• Sync with OpenIAP v1.3.17
• Add InstallmentPlanDetailsAndroid class (Billing Library 7.0+)
• Add PendingPurchaseUpdateAndroid class (Billing Library 5.0+)
• Add purchaseOptionIdAndroid field to DiscountOffer (Billing Library 7.0+)
• Update llms.txt with new type documentation
• Add release blog post

Related

• OpenIAP PR: feat(gql,google): add BillingClient 5.0+ and 7.0+ fields hyodotdev/openiap#78
• OpenIAP Release Notes: https://www.openiap.dev/docs/updates/notes#gql-1-3-17-google-1-3-28

OpenIAP Versions

Package	Version
openiap-gql	1.3.17
openiap-google	1.3.28
openiap-apple	1.3.14

🤖 Generated with Claude Code

[gemini-code-assist]

Summary of Changes

Hello @hyochan, 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 the latest OpenIAP library version, enhancing Android in-app purchase capabilities by introducing new data structures for subscription installment plans and pending purchase updates. It also provides more granular detail for discount offers, ensuring compatibility with recent Google Play Billing Library versions and improving the overall robustness of the in-app purchase system.

Highlights

• OpenIAP Sync: Synchronized the project with OpenIAP v1.3.17, bringing the latest features and updates from the in-app purchase library.
• New Android Billing Library Types: Introduced InstallmentPlanDetailsAndroid for Billing Library 7.0+ and PendingPurchaseUpdateAndroid for Billing Library 5.0+ to support advanced Android subscription features.
• Enhanced Discount Offer Details: Added the purchaseOptionIdAndroid field to DiscountOffer and ProductAndroidOneTimePurchaseOfferDetail to identify selected purchase options in Billing Library 7.0+.
• Documentation Updates: Updated llms.txt with documentation for the newly added Android types and fields, ensuring clarity for developers.
• Release Blog Post: A new blog post was added to announce the 8.2.6 release, detailing the OpenIAP sync and new Android billing features.

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Changelog

• docs/blog/2026-02-11-8.2.6-openiap-1.3.17.md
  • Added a new blog post for the 8.2.6 release, detailing the OpenIAP 1.3.17 sync and new Android billing features.
• docs/static/llms.txt
  • Added documentation for InstallmentPlanDetailsAndroid (Billing Library 7.0+).
  • Added documentation for PendingPurchaseUpdateAndroid (Billing Library 5.0+).
  • Added documentation for purchaseOptionIdAndroid field (Billing Library 7.0+).
• lib/types.dart
  • Added purchaseOptionIdAndroid field to DiscountOffer class.
  • Introduced InstallmentPlanDetailsAndroid class to represent Android subscription installment plan details.
  • Introduced PendingPurchaseUpdateAndroid class to represent Android pending subscription upgrades/downgrades.
  • Added purchaseOptionId field to ProductAndroidOneTimePurchaseOfferDetail class.
  • Added installmentPlanDetails field to ProductSubscriptionAndroidOfferDetails class.
  • Added pendingPurchaseUpdateAndroid field to PurchaseAndroid class.
  • Added installmentPlanDetailsAndroid field to SubscriptionOffer class.
• openiap-versions.json
  • Updated google package version from 1.3.27 to 1.3.28.
  • Updated gql package version from 1.3.16 to 1.3.17.

Activity

• No human activity (comments, reviews) has been recorded on this pull request yet.

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[coderabbitai]

📝 Walkthrough

Walkthrough

New Android billing library types and fields are introduced (Billing Library 5.0+ and 7.0+), including installment plan details, pending purchase updates, and purchase option identification. Type definitions in lib/types.dart are updated with corresponding JSON serialization, documentation is added describing the changes, and OpenIAP dependency versions are bumped.

Changes

Cohort / File(s)	Summary
Documentation Updates docs/blog/2026-02-11-8.2.6-openiap-1.3.17.md, docs/static/llms.txt	Release notes and API reference documenting three new Android-specific types and one new field, along with version tables and installation guidance.
Type Definitions & Serialization lib/types.dart	Added three new public classes (InstallmentPlanDetailsAndroid, PendingPurchaseUpdateAndroid) and new fields (purchaseOptionIdAndroid, purchaseOptionId, installmentPlanDetails, pendingPurchaseUpdateAndroid) with complete JSON read/write handling across DiscountOffer, ProductAndroidOneTimePurchaseOfferDetail, ProductSubscriptionAndroidOfferDetails, SubscriptionOffer, and PurchaseAndroid.
Version Bumps openiap-versions.json	Updated OpenIAP dependency versions: gql from 1.3.16 to 1.3.17, google from 1.3.27 to 1.3.28.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• chore: update openiap versions #586: Updates openiap-versions.json to synchronize OpenIAP dependency versions across releases.

Suggested labels

🎯 feature, $ openiap, 🤖 android, :package: update packages

Poem

🐰 Hop, hop—new Android fields take flight!
Installment plans and pending purchases align just right,
With JSON keys and types so clean,
The billing library's best we've seen!
OpenIAP v1.3.17 brings the springtime delight! 🌱

🚥 Pre-merge checks | ✅ 3

✅ 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 'feat: sync with openiap v1.3.17' directly and accurately reflects the main objective of the pull request, which is to synchronize the codebase with OpenIAP v1.3.17.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/openiap-sync-1.3.17

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.68%. Comparing base (c0aa063) to head (9ebc4aa).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #615   +/-   ##
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  Coverage   67.68%   67.68%           
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  Files           7        7           
  Lines        1479     1479           
=======================================
  Hits         1001     1001           
  Misses        478      478           

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[gemini-code-assist]

Code Review

This pull request syncs the project with OpenIAP v1.3.17, introducing new types for recent Google Play Billing Library features. The changes are well-structured and consistently applied across the type definitions and documentation. I have one suggestion to improve the clarity of the new release notes blog post to avoid potential confusion for developers.