139 lines
6.5 KiB
Markdown
139 lines
6.5 KiB
Markdown
# OpenChamber - AI Agent & Contributor Reference
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Technical reference for AI coding agents and human contributors working on this project.
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## Core Purpose
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Web and desktop interface for OpenCode AI coding agent. Provides cross-device continuity, remote accessibility, and a unified chat interface using the OpenCode API backend.
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## Tech Stack
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- **React 19.1.1**: Modern React with concurrent features
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- **TypeScript 5.8.3**: Full type safety
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- **Vite 7.1.2**: Build tool with HMR and proxy
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- **Tailwind CSS v4.0.0**: Latest `@import` syntax
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- **Zustand 5.0.8**: State management with persistence
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- **@opencode-ai/sdk**: Official OpenCode SDK with typed endpoints and SSE
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- **@remixicon/react**: Icon system
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- **@radix-ui primitives**: Accessible component foundations
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## Architecture Overview (Monorepo)
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Workspaces:
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- `packages/ui` - Shared UI components and stores
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- `packages/web` - Web runtime, Express server, CLI
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- `packages/desktop` - Tauri desktop app with native APIs
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### Core Components (UI)
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In `packages/ui/src/components/`: ChatContainer, MessageList, ChatMessage, StreamingAnimatedText, ChatInput, FileAttachment, ModelControls, PermissionCard, SessionList, SessionSwitcherDialog, DirectoryTree, DirectoryExplorerDialog, MainLayout, Header, Sidebar, SettingsDialog, AgentsPage, CommandsPage, GitIdentitiesPage, ProvidersPage, SessionsPage, SettingsPage, CommandPalette, HelpDialog, ConfigUpdateOverlay, ContextUsageDisplay, ErrorBoundary, MemoryDebugPanel, MobileOverlayPanel, ThemeDemo, ThemeSwitcher.
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In `packages/ui/src/components/views/`: ChatView, GitView, DiffView, TerminalView.
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In `packages/ui/src/components/terminal/`: TerminalViewport
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### State Management (UI)
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In `packages/ui/src/stores/`: ConfigStore, SessionStore, DirectoryStore, UIStore, FileStore, MessageStore, ContextStore, PermissionStore, AgentsStore, CommandsStore, GitIdentitiesStore, TerminalStore
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### OpenCode SDK Integration (UI)
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In `packages/ui/src/lib/opencode/`: client.ts wrapper around `@opencode-ai/sdk` with directory-aware API calls, SDK methods (session.*, message.*, agent.*, provider.*, config.*, project.*, path.*), AsyncGenerator SSE streaming (2 retry attempts, 500ms->8s backoff), automatic directory parameter injection.
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In `packages/ui/src/hooks/`: useEventStream.ts for real-time SSE connection management.
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### Web Runtime (server/CLI)
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Express server and CLI in `packages/web`: API adapters in `packages/web/src/api`, server in `packages/web/server/index.js` (git/terminal/config), UI bundle imported from `@openchamber/ui`.
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### Desktop Runtime (Tauri)
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Native desktop app in `packages/desktop`: Tauri backend in `src-tauri/` (Rust), frontend API adapters in `src/api/` (settings, permissions, diagnostics, files, git, terminal, notifications, tools), bridge layer in `src/lib/` for Tauri IPC communication.
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## Development Commands
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### Code Validation
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Always validate changes before committing:
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```bash
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pnpm -r type-check # TypeScript validation
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pnpm -r lint # ESLint checks
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pnpm -r build # Production build
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```
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### Building
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```bash
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pnpm run build # Build all packages
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pnpm run desktop:build # Build desktop app
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```
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## Key Patterns
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### Section-Based Navigation
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Modular section architecture with dedicated pages and sidebars. Sections: Agents, Commands, Git Identities, Providers, Sessions, Settings. Independent state management and routing.
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### File Attachments
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Drag-and-drop upload with 10MB limit (`FileAttachment.tsx`), Data URL encoding, type validation with fallbacks, integrated via `useFileStore.addAttachedFile()`.
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### Theme System
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In `packages/ui/src/lib/theme/`: TypeScript-based themes (Flexoki Light and Dark), CSS variable generation, component-specific theming, Tailwind CSS v4 integration.
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### Typography System
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In `packages/ui/src/lib/`: Semantic typography with 6 CSS variables, theme-independent scales. **CRITICAL**: Always use semantic typography classes, never hardcoded font sizes.
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### Streaming Architecture
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SDK-managed SSE with AsyncGenerator, temp->real ID swap, pending-user guards, empty-response detection via `window.__opencodeDebug`.
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## Development Guidelines
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### Lint & Type Safety
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- Never land code that introduces new ESLint or TypeScript errors
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- Run `pnpm run lint` and `pnpm run type-check` before finalizing changes
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- Adding `eslint-disable` requires justification in a comment explaining why typing is impossible
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- Do **not** use `any` or `unknown` casts as escape hatches; build narrow adapter interfaces instead
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- Refactors or new features must keep existing lint/type baselines green
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### Theme Integration
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- Check theme definitions before adding colors or font sizes to new components
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- Always use theme-defined typography classes, never hardcoded font sizes
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- Reference existing theme colors instead of adding new ones
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- Ensure new components support both light and dark themes
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- Use theme-generated CSS variables for dynamic styling
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### Code Standards
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- **Functional components**: Exclusive use of function components with hooks
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- **Custom hooks**: Extract logic for reusability
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- **Type-first development**: Comprehensive TypeScript usage
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- **Component composition**: Prefer composition over inheritance
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## Feature Implementation Map
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### Directory & File System
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`packages/ui/src/components/session/`: DirectoryTree, DirectoryExplorerDialog
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`packages/ui/src/stores/`: DirectoryStore
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Backend: `packages/web/server/index.js` with `listLocalDirectory()`, `getFilesystemHome()`
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### Session Switcher
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`SessionSwitcherDialog.tsx`: Collapsible date groups, mobile parity with MobileOverlayPanel, Git worktree and shared session chips, streaming indicators.
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### Settings & Configuration
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`packages/ui/src/components/sections/`: AgentsPage, CommandsPage, GitIdentitiesPage, ProvidersPage, SessionsPage, SettingsPage
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Related stores: useAgentsStore, useCommandsStore, useConfigStore, useGitIdentitiesStore
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### Git Operations
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`packages/ui/src/components/views/`: GitView, DiffView
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`packages/ui/src/stores/`: useGitIdentitiesStore
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Backend: `packages/ui/src/lib/gitApi.ts` + `packages/web/server/index.js` (simple-git wrapper)
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### Terminal
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`packages/ui/src/components/views/`: TerminalView
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`packages/ui/src/components/terminal/`: TerminalViewport (Xterm.js with FitAddon)
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`packages/ui/src/stores/`: useTerminalStore
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Backend: `packages/web/server/index.js` (node-pty wrapper with SSE)
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### Theme System
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`packages/ui/src/lib/theme/`: themes (2 definitions), cssGenerator, syntaxThemeGenerator
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`packages/ui/src/components/providers/`: ThemeProvider
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### Mobile & UX
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`packages/ui/src/components/ui/`: MobileOverlayPanel
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`packages/ui/src/hooks/`: useEdgeSwipe, useChatScrollManager
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