[PR 14] Implement UiState and Base Chat/Session ViewModels (E1.S, E2.S, E6.S*) #60

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opened 2025-06-25 00:06:58 +00:00 by rwachters · 0 comments

rwachters commented

2025-06-25 00:06:58 +00:00

(Migrated from github.com)

Summary

Define UiState and implement base ViewModels for chat and session state management using the KMP ViewModel pattern.

Details

Define the UiState<E, T> sealed class (if not done).
Create ChatState and SessionListState classes inheriting from ViewModel.
Define core StateFlows for session and list state.
Implement ChatState.loadSession and ChatState.sendMessage using viewModelScope.launch and calling ChatApi/SessionApi, folding over the Either results to update state.
Implement SessionListState.loadSessionsAndGroups using parZip and folding over results.
Implement SessionListState.selectSession and buildThreadBranch function.
Implement SessionListData data class with groupedSessions property.
Ensure Koin modules in app provide API client implementations for ViewModels.

Dependencies

PRs 11, 12, 13 (Frontend clients)
Arrow Core/Fx, KMP ViewModel, StateFlow
PRs 1, 3 (Backend services/API)

Tests

Unit tests for ViewModel logic using runTest (testing state transitions based on mocked API client results).

Assignee

Maya

Labels

frontend, viewmodel, state, arrow, good first issue

## Summary Define UiState and implement base ViewModels for chat and session state management using the KMP ViewModel pattern. ## Details - Define the `UiState<E, T>` sealed class (if not done). - Create `ChatState` and `SessionListState` classes inheriting from `ViewModel`. - Define core `StateFlow`s for session and list state. - Implement `ChatState.loadSession` and `ChatState.sendMessage` using `viewModelScope.launch` and calling `ChatApi`/`SessionApi`, folding over the `Either` results to update state. - Implement `SessionListState.loadSessionsAndGroups` using `parZip` and folding over results. - Implement `SessionListState.selectSession` and `buildThreadBranch` function. - Implement `SessionListData` data class with `groupedSessions` property. - Ensure Koin modules in `app` provide API client implementations for ViewModels. ## Dependencies - PRs 11, 12, 13 (Frontend clients) - Arrow Core/Fx, KMP ViewModel, StateFlow - PRs 1, 3 (Backend services/API) ## Tests - Unit tests for ViewModel logic using `runTest` (testing state transitions based on mocked API client results). ## Assignee Maya ## Labels frontend, viewmodel, state, arrow, good first issue