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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import React, { useCallback } from 'react';
import { Text, Box, useInput, useFocus, Key } from 'ink';
import TextInput from 'ink-text-input';
import { Colors } from '../colors.js';
import { Suggestion } from './SuggestionsDisplay.js';
interface InputPromptProps {
query: string;
setQuery: React.Dispatch<React.SetStateAction<string>>;
inputKey: number;
setInputKey: React.Dispatch<React.SetStateAction<number>>;
onSubmit: (value: string) => void;
showSuggestions: boolean;
suggestions: Suggestion[];
activeSuggestionIndex: number;
navigateUp: () => void;
navigateDown: () => void;
resetCompletion: () => void;
}
export const InputPrompt: React.FC<InputPromptProps> = ({
query,
setQuery,
inputKey,
setInputKey,
onSubmit,
showSuggestions,
suggestions,
activeSuggestionIndex,
navigateUp,
navigateDown,
resetCompletion,
}) => {
const { isFocused } = useFocus({ autoFocus: true });
const handleAutocomplete = useCallback(
(indexToUse: number) => {
if (indexToUse < 0 || indexToUse >= suggestions.length) {
return;
}
const selectedSuggestion = suggestions[indexToUse];
const trimmedQuery = query.trimStart();
if (trimmedQuery.startsWith('/')) {
// Handle / command completion
const slashIndex = query.indexOf('/');
const base = query.substring(0, slashIndex + 1);
const newValue = base + selectedSuggestion.value;
setQuery(newValue);
} else {
// Handle @ command completion
const atIndex = query.lastIndexOf('@');
if (atIndex === -1) return;
// Find the part of the query after the '@'
const pathPart = query.substring(atIndex + 1);
// Find the last slash within that part
const lastSlashIndexInPath = pathPart.lastIndexOf('/');
let base = '';
if (lastSlashIndexInPath === -1) {
// No slash after '@', replace everything after '@'
base = query.substring(0, atIndex + 1);
} else {
// Slash found, keep everything up to and including the last slash
base = query.substring(0, atIndex + 1 + lastSlashIndexInPath + 1);
}
const newValue = base + selectedSuggestion.value;
setQuery(newValue);
}
resetCompletion(); // Hide suggestions after selection
setInputKey((k) => k + 1); // Increment key to force re-render and cursor reset
},
[query, setQuery, suggestions, resetCompletion, setInputKey],
);
useInput(
(input: string, key: Key) => {
if (!isFocused) {
return;
}
if (showSuggestions) {
if (key.upArrow) {
navigateUp();
} else if (key.downArrow) {
navigateDown();
} else if (key.tab) {
if (suggestions.length > 0) {
const targetIndex =
activeSuggestionIndex === -1 ? 0 : activeSuggestionIndex;
if (targetIndex < suggestions.length) {
handleAutocomplete(targetIndex);
}
}
} else if (key.return) {
if (activeSuggestionIndex >= 0) {
handleAutocomplete(activeSuggestionIndex);
} else {
if (query.trim()) {
onSubmit(query);
}
}
} else if (key.escape) {
resetCompletion();
}
}
// Enter key when suggestions are NOT showing is handled by TextInput's onSubmit prop below
},
{ isActive: true },
);
return (
<Box borderStyle="round" borderColor={Colors.AccentBlue} paddingX={1}>
<Text color={Colors.AccentPurple}>> </Text>
<Box flexGrow={1}>
<TextInput
key={inputKey.toString()}
value={query}
onChange={setQuery}
placeholder="Enter your message or use tools (e.g., @src/file.txt)..."
onSubmit={() => {
// This onSubmit is for the TextInput component itself.
// It should only fire if suggestions are NOT showing,
// as useInput handles Enter when suggestions are visible.
const trimmedQuery = query.trim();
if (!showSuggestions && trimmedQuery) {
onSubmit(trimmedQuery);
}
// If suggestions ARE showing, useInput's Enter handler
// would have already dealt with it (either completing or submitting).
}}
/>
</Box>
</Box>
);
};
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