DROID-4127 Tech | Cross-space chat storage functionality

[konstantiniiv]

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Description

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation Update
• 🎨 Style
• 🧑‍💻 Code Refactor
• 🔥 Performance Improvements
• ✅ Test
• 🤖 Build
• 🔁 CI

Related Tickets & Documents

Mobile & Desktop Screenshots/Recordings

Added tests?

• 👍 yes
• 🙅 no, because they aren't needed
• 🙋 no, because I need help

Added to documentation?

• 📜 README.md
• 📓 tech-docs
• 🙅 no documentation needed

[optional] Are there any post-deployment tasks we need to perform?

[Copilot]

Pull Request Overview

This PR implements cross-space chat storage functionality by adding support for subscribing to objects across multiple user spaces. The implementation introduces new middleware APIs and domain layer containers specifically designed for managing cross-space subscriptions, with a focus on chat objects.

Key changes:

• New middleware methods objectCrossSpaceSubscribe and objectCrossSpaceUnsubscribe for cross-space search operations
• CrossSpaceSubscriptionContainer for managing storeless subscriptions across all spaces
• ChatsSubscriptionContainer for maintaining a global subscription to chat objects

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
MiddlewareServiceImplementation.kt	Adds cross-space subscribe/unsubscribe method implementations with error handling
MiddlewareService.kt	Defines interface methods for cross-space subscription operations
Middleware.kt	Implements cross-space search subscription logic with validation
BlockMiddleware.kt	Delegates cross-space subscription calls to middleware
StoreSearchParams.kt	Adds CrossSpaceSearchParams data class for cross-space search parameters
CrossSpaceSubscriptionContainer.kt	Implements storeless subscription container for cross-space searches
ChatsSubscriptionContainer.kt	Implements container for managing global chat subscriptions
BlockRepository.kt	Adds interface methods for cross-space subscription operations
BlockRemote.kt	Adds remote interface methods for cross-space operations
BlockDataRepository.kt	Implements repository delegation for cross-space subscriptions
Command.kt	Adds CrossSpaceSearchSubscribe command and removes unused import
SubscriptionsModule.kt	Configures DI for CrossSpaceSubscriptionContainer and ChatsSubscriptionContainer
VaultDI.kt	Adds ChatsSubscriptionContainer dependency

Comments suppressed due to low confidence (1)

middleware/src/main/java/com/anytypeio/anytype/middleware/interactor/Middleware.kt:1128

• The objectSearchSubscribe method is missing the isValidObject() validation that was added to objectCrossSpaceSearchSubscribe (lines 1402 and 1408). For consistency, both methods should perform the same validation checks. Consider adding && record.isValidObject() to the conditions on lines 1369 and 1375, similar to how it's done in the new cross-space method.

            results = response.records.mapNotNull { record ->
                if (record != null && record.isNotEmpty())
                    ObjectWrapper.Basic(record)
                else
                    null
            },
            dependencies = response.dependencies.mapNotNull { record ->
                if (record != null && record.isNotEmpty())
                    ObjectWrapper.Basic(record)
                else
                    null
            },

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