# apps/web/src/hooks
dir: apps/web/src/hooks

index: apps/web/src/hooks/.pi-map.index.md

## role
Provides reusable React custom hooks that encapsulate stateful logic, side effects, and API interactions for the web application's UI components, covering data fetching, terminal management, workspace operations, notifications, and mobile-specific behaviors.
## files
- use-async-data.ts | A custom React hook that manages asynchronous data fetching with loading, error, and ready states, plus a manual reload capability. | exp: func:useAsyncData(fetcher: () => Promise<T>, deps: React.DependencyList) → UseAsyncDataResult<T>, call:useState, call:useCallback, call:setStatus, call:setError, call:fetcher, call:setData, call:load, call:useEffect | dep: react
- use-auto-hide.ts | A React custom hook that automatically hides an element after a specified timeout and provides manual controls for showing, hiding, and toggling visibility. | exp: func:useAutoHide(options: AutoHideOptions), call:useState, call:useRef, call:Date.now, call:useCallback, call:setIsVisible, call:clearTimeout, call:setTimeout, call:hide, call:show, call:useEffect | dep: react
- use-config-profiles.ts | A React custom hook that manages CRUD operations, form state, drag-and-drop ordering, and cyclic dependency prevention for configuration profiles. | exp: useConfigProfiles | dep: react, ../utils/errors, ../api/config-profiles, ../api/projects, ../api/tool-types, ../types
- use-events.test.ts | Tests a React hook that manages Server-Sent Events (SSE) connections with automatic reconnection, backoff, and error handling | dep: vitest, @testing-library/react, ./use-events, ../api/events, use-events hook
- use-events.ts | React hook that manages a Server-Sent Events connection with automatic exponential backoff reconnection, lifecycle event handling, and authentication redirect on 401 errors. | exp: UseEventsReturn, func:useEvents() → UseEventsReturn, call:useState, call:useRef, call:useCallback, call:clearTimeout, call:createEventSource, call:setConnected, call:setError, call:setReconnectCount, call:JSON.parse, call:setEvents, call:es.addEventListener, call:es.close, call:Math.min, call:Math.pow, call:Math.random, call:setTimeout, call:probeEventStreamStatus, call:window.location.assign, call:connect, call:useEffect, call:esRef.current.close | dep: react, ../api/events, ../types/events
- use-git-repo.ts | A custom React hook that centralizes all git repository operations (branch management, status tracking, commit history, and git actions) into a reusable interface for components. | exp: GitStatus, UseGitRepoResult, func:useGitRepo(projectId: string | undefined, repoId: string | undefined) → UseGitRepoResult, call:useState, call:useCallback, call:setLoading, call:setError, call:fn, call:extractError, call:withLoading, call:listRepositoryBranches, call:setBranches, call:data.branches.map, call:setDefaultBranch, call:getRepositoryStatus, call:setStatus, call:getRepositoryHistory, call:setHistory, call:getCommitDetail, call:setCommitDetail, call:commitChanges, call:refreshStatus, call:pushRepository, call:pullRepository, call:fetchRepository, call:checkoutBranch, call:refreshBranches, call:createBranch, call:deleteBranch, call:mergeBranches, call:refreshHistory, call:useEffect, raise:err | dep: react, ../api/git-repositories
- use-instance-actions.ts | A React custom hook that manages instance/session actions including opening, starting, stopping, deleting, force-deleting, recreating tunnels, and renaming with loading states and dirty delete handling. | exp: func:useInstanceActions(options: UseInstanceActionsOptions) → UseInstanceActionsReturn, call:useSessions, call:useState, call:useRef, call:useCallback, call:tabRefs.current.get, call:existing.focus, call:session.tool_type_interfaces?.includes, call:window.open, call:tabRefs.current.set, call:setLoadingSessionId, call:startInstance, call:onRefresh, call:stopInstance, call:deleteInstance, call:setDirtyDeleteSession, call:setDirtyDeleteFiles, call:removeSession, call:recreateInstanceTunnel, call:alert, call:newName.trim, call:renameInstance | dep: react, ../api/sessions, ../state/sessions
- use-mobile-viewport.ts | A React hook that tracks whether the viewport width is below a mobile breakpoint (768px) | exp: func:useMobileViewport(), call:useState, call:useEffect, call:setIsMobile, call:window.addEventListener, call:window.removeEventListener | dep: react
- use-notifications.test.tsx | Tests the useNotifications custom React hook with mocked API calls, covering optimistic updates, polling behavior, and error handling. | dep: vitest, @testing-library/react, ./use-notifications, ../state/notifications, ../api/notifications, use-notifications
- use-notifications.ts | Custom React hook that provides access to notification state and ensures it's used within a NotificationProvider | exp: func:useNotifications(), call:useContext, raise:Error | dep: react, ../state/notifications
- use-projects.ts | Custom React hook for managing project CRUD operations, workspace management, and dialog state for a project management UI | exp: useProjects | dep: react, ../api/projects, ../api/workspaces, ./use-async-data, ../types
- use-special-keys.ts | Maps special keys and modifier+character combinations to ANSI escape sequences for terminal input simulation. | exp: SpecialKey, ModifierKey, func:getSequenceWithModifier(key: SpecialKey, activeModifier: ModifierKey | null) → { sequence: string; clearModifier: boolean } | null, call:char.toLowerCase, func:applyModifierToChar(char: string, modifier: ModifierKey) → string | null, call:char.toLowerCase
- use-ssh-keys.ts | A React custom hook that manages SSH key operations including listing, generating, deleting, signing payloads, and verifying signatures. | exp: useSSHKeys | dep: react, ../api/ssh-keys, ./use-async-data
- use-start-tool.ts | React hook for managing the state and API calls to create and start a tool instance on a workspace. | exp: UseStartToolResult, func:useStartTool() → UseStartToolResult, call:useState, call:useCallback, call:setStarting, call:setError, call:createInstance, call:startInstance | dep: react, ../api/sessions, ../types/workspace
- use-terminal-page.ts | Manages terminal page state including sessions, keyboard shortcuts, fullscreen mode, mobile viewport handling, and terminal lifecycle operations. | exp: useTerminalPage | dep: react, react-router-dom, ../components/features/terminal/terminal, ../components/features/terminal/terminal-session-tabs, ./use-mobile-viewport, ./use-auto-hide, ./use-virtual-keyboard, ./use-terminal-sessions, ../api/terminal, ./use-special-keys, use-mobile-viewport, use-auto-hide, use-virtual-keyboard, use-terminal-sessions, terminal, terminal-session-tabs, api/terminal, api/sessions, use-special-keys
- use-terminal-sessions.ts | React custom hook that manages terminal session state (CRUD operations, active session tracking) for a given instance | exp: UseTerminalSessionsResult, func:useTerminalSessions(instanceId: string) → UseTerminalSessionsResult, call:useState, call:useCallback, call:setLoading, call:setError, call:listTerminalSessions, call:setSessions, call:setActiveSessionId, call:createTerminalSession, call:closeTerminalSession, call:prev.filter, call:renameTerminalSession, call:prev.map, call:resetTerminalSession, call:loadSessions, call:useEffect | dep: react, ../api/terminal
- use-theme.ts | React hook that fetches user theme preference on mount and applies it to the document root element via data-theme attribute | exp: func:useTheme(), call:useEffect, call:getUserConfig, call:document.documentElement.removeAttribute, call:document.documentElement.setAttribute | dep: react, ../api/settings
- use-tool-workshop.ts | Custom React hook that manages state and operations for a tool workshop UI, including CRUD operations for tool types and tool definitions with form handling and validation. | exp: useToolWorkshop | dep: react, ../utils/errors, ../api/tool-types, ../api/tool-definitions, ../components/features/tool-workshop/ToolTypeEditorPanel
- use-virtual-keyboard.ts | React hook that detects virtual keyboard open/close state and measures its height on mobile devices | exp: func:useVirtualKeyboard(), call:useState, call:useCallback, call:setState, call:useEffect, call:visualViewport.addEventListener, call:window.addEventListener, call:updateKeyboardState, call:visualViewport.removeEventListener, call:window.removeEventListener | dep: react
- use-workspace-actions.ts | Provides a React hook that encapsulates workspace CRUD operations with loading state management and user confirmation dialogs for destructive actions. | exp: UseWorkspaceActionsResult, func:useWorkspaceActions() → UseWorkspaceActionsResult, call:useState, call:useCallback, call:createWorkspace, call:setLoadingId, call:deleteWorkspace, call:onRefresh, call:window.confirm, call:instances.map((i) => `- ${i.name}`).join, call:syncWorkspace, call:updateWorkspace, raise:err | dep: react, ../api/workspaces, ../types/workspace
- use-workspace-files.ts | Custom React hook for managing workspace file operations including listing, loading, saving, and navigating files. | exp: UseWorkspaceFilesResult, func:useWorkspaceFiles(workspaceId: string) → UseWorkspaceFilesResult, call:useState, call:useCallback, call:setLoading, call:setError, call:listWorkspaceFiles, call:setEntries, call:setCurrentPath, call:setContent, call:getWorkspaceFileContent, call:saveWorkspaceFile, call:refresh, call:useEffect | dep: react, ../api/workspace-files
- use-workspace-git.ts | Custom React hook that provides git operations and state management for a workspace | exp: UseWorkspaceGitResult, func:useWorkspaceGit(workspaceId: string) → UseWorkspaceGitResult, call:useState, call:useCallback, call:setLoading, call:setError, call:Promise.all, call:getGitStatus, call:getGitBranches, call:getGitHistory, call:setStatus, call:setBranches, call:setCurrentBranch, call:setHistory, call:gitCommit, call:refresh, call:gitPush, call:gitPull, call:gitFetch, call:gitCheckout, call:useEffect | dep: react, ../api/workspace-git
- use-workspace-instances.ts | Custom React hook for managing workspace instances with CRUD operations, loading states, and error handling. | exp: UseWorkspaceInstancesResult, func:useWorkspaceInstances(workspaceId: string) → UseWorkspaceInstancesResult, call:useState, call:useCallback, call:setLoading, call:setError, call:listWorkspaceInstances, call:setInstances, call:createWorkspaceInstance, call:refresh, call:useEffect | dep: react, ../api/workspace-instances, ../api/sessions
- use-workspaces.ts | Custom React hook that fetches and manages workspace data with loading and error states. | exp: UseWorkspacesResult, func:useWorkspaces(projectId: string, repoId: string) → UseWorkspacesResult, call:useState, call:useCallback, call:setLoading, call:setError, call:listWorkspaces, call:listAllWorkspaces, call:setWorkspaces, call:useEffect, call:refresh | dep: react, ../api/workspaces, ../types/workspace
## arch
Follows a custom hook composition pattern where each hook encapsulates a single domain concern (data fetching, CRUD operations, UI state, device detection), often combining useState/useEffect/useCallback with SWR-style async data management, and layering higher-level hooks (use-terminal-page) from lower-level ones (use-mobile-viewport, use-virtual-keyboard).
## tags
call:set, call:use, workspace, react, state, terminal, api, callback
## symbols
- useAsyncData
- useAutoHide
- useEvents
- useGitRepo
- useInstanceActions
- useMobileViewport
- useNotifications
- getSequenceWithModifier
## workflows
- change hooks behavior
  read: use-async-data.ts, use-auto-hide.ts, use-config-profiles.ts
- update hooks tests
  read: use-events.test.ts, use-notifications.test.tsx
- change hooks config
  read: use-config-profiles.ts
## dirty
-
