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useAssistant.ts
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326 lines (284 loc) Β· 8.09 KB
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import { useCallback, useEffect, useState, useSyncExternalStore } from 'react'
import { assistantService } from '@/services/AssistantService'
import { loggerService } from '@/services/LoggerService'
import type { Assistant } from '@/types/assistant'
const logger = loggerService.withContext('useAssistant')
/**
* React Hook for managing a specific assistant (Refactored with useSyncExternalStore)
*
* Uses AssistantService with optimistic updates for zero-latency UX.
* Integrates with React 18's useSyncExternalStore for efficient re-renders.
*
* @param assistantId - The assistant ID to watch
* @returns assistant data, loading state, and update method
*
* @example
* ```typescript
* function AssistantDetail({ assistantId }) {
* const { assistant, isLoading, updateAssistant } = useAssistant(assistantId)
*
* if (isLoading) return <Loading />
*
* return (
* <div>
* <h1>{assistant.name}</h1>
* <button onClick={() => updateAssistant({ name: 'New Name' })}>Rename</button>
* </div>
* )
* }
* ```
*/
export function useAssistant(assistantId: string) {
// ==================== Early Return for Invalid ID ====================
const isValidId = assistantId && assistantId.trim() !== ''
// ==================== Subscription (useSyncExternalStore) ====================
/**
* Subscribe to specific assistant changes
*/
const subscribe = useCallback(
(callback: () => void) => {
if (!isValidId) {
// Return a no-op unsubscribe for invalid IDs
return () => {}
}
logger.verbose(`Subscribing to assistant ${assistantId} changes`)
return assistantService.subscribeAssistant(assistantId, callback)
},
[assistantId, isValidId]
)
/**
* Get assistant snapshot (synchronous from cache)
*/
const getSnapshot = useCallback(() => {
if (!isValidId) {
return null
}
return assistantService.getAssistantCached(assistantId)
}, [assistantId, isValidId])
/**
* Server snapshot (for SSR compatibility - not used in React Native)
*/
const getServerSnapshot = useCallback(() => {
return null
}, [])
// Use useSyncExternalStore for reactive updates
const assistant = useSyncExternalStore(subscribe, getSnapshot, getServerSnapshot)
// ==================== Loading State ====================
/**
* Track if we're loading the assistant from database
*/
const [isLoading, setIsLoading] = useState(false)
/**
* Load assistant from database if not cached
*/
useEffect(() => {
// Skip loading for invalid IDs
if (!isValidId) {
setIsLoading(false)
return
}
if (!assistant) {
setIsLoading(true)
assistantService
.getAssistant(assistantId)
.then(() => {
setIsLoading(false)
})
.catch(error => {
logger.error(`Failed to load assistant ${assistantId}:`, error as Error)
setIsLoading(false)
})
} else {
setIsLoading(false)
}
}, [assistant, assistantId, isValidId])
// ==================== Action Methods ====================
/**
* Update assistant with optimistic updates
*/
const updateAssistant = useCallback(
async (updates: Partial<Omit<Assistant, 'id'>>) => {
await assistantService.updateAssistant(assistantId, updates)
},
[assistantId]
)
// ==================== Return API ====================
return {
assistant,
isLoading: !assistant && isLoading,
updateAssistant
}
}
/**
* React Hook for getting all assistants
*
* Uses AssistantService with caching for optimal performance.
*
* @example
* ```typescript
* function AssistantList() {
* const { assistants, isLoading } = useAssistants()
*
* if (isLoading) return <Loading />
*
* return (
* <ul>
* {assistants.map(a => <li key={a.id}>{a.name}</li>)}
* </ul>
* )
* }
* ```
*/
export function useAssistants() {
const [assistants, setAssistants] = useState<Assistant[]>([])
const [isLoading, setIsLoading] = useState(true)
/**
* Subscribe to changes
*/
const subscribe = useCallback((callback: () => void) => {
logger.verbose('Subscribing to all assistants changes')
return assistantService.subscribeAllAssistants(callback)
}, [])
useEffect(() => {
const unsubscribe = subscribe(() => {
// Reload when any assistant changes
loadAllAssistants()
})
loadAllAssistants()
return unsubscribe
}, [subscribe])
const loadAllAssistants = async () => {
try {
setIsLoading(true)
const allAssistants = await assistantService.getAllAssistants()
setAssistants(allAssistants)
} catch (error) {
logger.error('Failed to load all assistants:', error as Error)
} finally {
setIsLoading(false)
}
}
const updateAssistants = useCallback(async (updates: Assistant[]) => {
for (const assistant of updates) {
await assistantService.updateAssistant(assistant.id, assistant)
}
}, [])
return {
assistants,
isLoading,
updateAssistants
}
}
/**
* React Hook for getting external assistants (user-created)
*
* @example
* ```typescript
* function ExternalAssistantList() {
* const { assistants, isLoading } = useExternalAssistants()
*
* return <AssistantList assistants={assistants} loading={isLoading} />
* }
* ```
*/
export function useExternalAssistants() {
const [assistants, setAssistants] = useState<Assistant[]>([])
const [isLoading, setIsLoading] = useState(true)
/**
* Subscribe to changes
*/
const subscribe = useCallback((callback: () => void) => {
return assistantService.subscribeAllAssistants(callback)
}, [])
useEffect(() => {
const unsubscribe = subscribe(() => {
// Reload when any assistant changes
loadExternalAssistants()
})
loadExternalAssistants()
return unsubscribe
}, [subscribe])
const loadExternalAssistants = async () => {
try {
setIsLoading(true)
const external = await assistantService.getExternalAssistants()
setAssistants(external)
} catch (error) {
logger.error('Failed to load external assistants:', error as Error)
} finally {
setIsLoading(false)
}
}
const updateAssistants = useCallback(async (updates: Assistant[]) => {
for (const assistant of updates) {
await assistantService.updateAssistant(assistant.id, assistant)
}
}, [])
return {
assistants,
isLoading,
updateAssistants
}
}
/**
* React Hook for getting built-in assistants
*
* @example
* ```typescript
* function BuiltInAssistantList() {
* const { assistants, isLoading, resetBuiltInAssistants } = useBuiltInAssistants()
*
* if (isLoading) return <Loading />
*
* return (
* <div>
* {assistants.map(a => <AssistantCard key={a.id} assistant={a} />)}
* <button onClick={resetBuiltInAssistants}>Reset to Default</button>
* </div>
* )
* }
* ```
*/
export function useBuiltInAssistants() {
const [assistants, setAssistants] = useState<Assistant[]>([])
const [isLoading, setIsLoading] = useState(true)
/**
* Subscribe to changes
*/
const subscribe = useCallback((callback: () => void) => {
return assistantService.subscribeBuiltInAssistants(callback)
}, [])
useEffect(() => {
const unsubscribe = subscribe(() => {
// Reload when any built-in assistant changes
loadBuiltInAssistants()
})
loadBuiltInAssistants()
return unsubscribe
}, [subscribe])
const loadBuiltInAssistants = async () => {
try {
setIsLoading(true)
const builtIn = await assistantService.getBuiltInAssistants()
setAssistants(builtIn)
} catch (error) {
logger.error('Failed to load built-in assistants:', error as Error)
} finally {
setIsLoading(false)
}
}
const resetBuiltInAssistants = useCallback(() => {
assistantService.resetBuiltInAssistants()
}, [])
const updateAssistants = useCallback(async (updates: Assistant[]) => {
for (const assistant of updates) {
await assistantService.updateAssistant(assistant.id, assistant)
}
}, [])
return {
assistants,
isLoading,
resetBuiltInAssistants,
updateAssistants
}
}