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import { launchImageLibrary } from 'react-native-image-picker';
import { Alert, Keyboard, Platform, TextInput } from 'react-native';
import { useChat } from '@/contexts/ChatContext';
import { requestCameraPermission, requestPhotoLibraryPermission } from '@/utils/permissions';
export const useChatBox = () => {
const {
messages,
text,
setText,
isStreaming,
isInitializing,
processingActionIds,
selectedImage,
setSelectedImage,
onSend,
onReset,
handleCancel,
handleAction,
initThread,
} = useChat();
const [keyboardHeight, setKeyboardHeight] = useState(0);
const inputRef = useRef<TextInput>(null);
useEffect(() => {
const showSubscription = Keyboard.addListener(
Platform.OS === 'ios' ? 'keyboardWillShow' : 'keyboardDidShow',
e => setKeyboardHeight(e.endCoordinates.height),
);
const hideSubscription = Keyboard.addListener(
Platform.OS === 'ios' ? 'keyboardWillHide' : 'keyboardDidHide',
() => setKeyboardHeight(0),
);
return () => {
showSubscription.remove();
hideSubscription.remove();
};
}, []);
const handlePickImage = async () => {
try {
const hasPermission = await requestPhotoLibraryPermission();
if (!hasPermission) return;
const result = await launchImageLibrary({
mediaType: 'photo',
quality: 0.8,
maxWidth: 1280,
maxHeight: 1280,
includeBase64: true,
});
if (result.errorCode) {
throw new Error(result.errorMessage || result.errorCode);
}
if (result.didCancel || !result.assets?.[0]?.uri) return;
const asset = result.assets[0];
if (asset.fileSize && asset.fileSize > 700 * 1024) {
Alert.alert(
'Image Size Limit Exceeded',
'The selected image exceeds the 700KB size limit. Please choose a smaller image.',
);
return;
}
setSelectedImage({
uri: asset.uri!,
fileName: asset.fileName,
type: asset.type,
base64: asset.base64,
});
} catch (error) {
console.error('Failed to pick image', error);
}
};
const handleLaunchCamera = async () => {
try {
const hasPermission = await requestCameraPermission();
if (!hasPermission) return;
const { launchCamera } = await import('react-native-image-picker');
const result = await launchCamera({
mediaType: 'photo',
quality: 0.7,
maxWidth: 1280,
maxHeight: 1280,
saveToPhotos: false,
presentationStyle: 'fullScreen',
includeBase64: true,
});
Iif (result.errorCode) {
throw new Error(result.errorMessage || result.errorCode);
}
Iif (result.didCancel || !result.assets?.[0]?.uri) return;
const asset = result.assets[0];
if (asset.fileSize && asset.fileSize > 700 * 1024) {
Alert.alert(
'Image Size Limit Exceeded',
'The captured image exceeds the 700KB size limit. Please take another picture.',
);
return;
}
setSelectedImage({
uri: asset.uri!,
fileName: asset.fileName,
type: asset.type,
base64: asset.base64,
});
} catch (error) {
console.error('Failed to launch camera', error);
}
};
return {
messages,
text,
setText,
isStreaming,
isInitializing,
processingActionIds,
selectedImage,
setSelectedImage,
inputRef,
keyboardHeight,
handlePickImage,
handleLaunchCamera,
onSend,
onReset,
handleCancel,
handleAction,
initThread,
};
};
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