81 lines
2.0 KiB
TypeScript
81 lines
2.0 KiB
TypeScript
import { useState, useCallback, useRef } from "react"
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import { ExpoSpeechRecognitionModule, useSpeechRecognitionEvent } from "expo-speech-recognition"
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interface SpeechState {
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listening: boolean
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transcript: string
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error: string | null
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}
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interface SpeechActions {
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start: () => Promise<void>
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stop: () => void
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cancel: () => void
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}
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export function useSpeech(onResult: (text: string) => void): SpeechState & SpeechActions {
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const [listening, setListening] = useState(false)
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const [transcript, setTranscript] = useState("")
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const [error, setError] = useState<string | null>(null)
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const pending = useRef("")
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useSpeechRecognitionEvent("start", () => {
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setListening(true)
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setError(null)
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setTranscript("")
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pending.current = ""
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})
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useSpeechRecognitionEvent("end", () => {
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setListening(false)
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// Deliver final transcript
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if (pending.current.trim()) {
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onResult(pending.current.trim())
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}
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setTranscript("")
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pending.current = ""
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})
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useSpeechRecognitionEvent("result", (event) => {
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const text = event.results[0]?.transcript || ""
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pending.current = text
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setTranscript(text)
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})
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useSpeechRecognitionEvent("error", (event) => {
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// "no-speech" is not really an error — user just didn't say anything
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if (event.error === "no-speech") {
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setListening(false)
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return
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}
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setError(event.message || event.error)
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setListening(false)
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})
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const start = useCallback(async () => {
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const result = await ExpoSpeechRecognitionModule.requestPermissionsAsync()
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if (!result.granted) {
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setError("Microphone permission denied")
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return
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}
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ExpoSpeechRecognitionModule.start({
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lang: "en-US",
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interimResults: true,
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continuous: true,
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})
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}, [])
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const stop = useCallback(() => {
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ExpoSpeechRecognitionModule.stop()
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}, [])
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const cancel = useCallback(() => {
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pending.current = ""
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ExpoSpeechRecognitionModule.abort()
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setListening(false)
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setTranscript("")
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}, [])
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return { listening, transcript, error, start, stop, cancel }
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}
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