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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import React from 'react';
import { Box, Text } from 'ink';
import { IndividualToolCallDisplay, ToolCallStatus } from '../../types.js';
import { DiffRenderer } from './DiffRenderer.js';
import { Colors } from '../../colors.js';
import { MarkdownDisplay } from '../../utils/MarkdownDisplay.js';
import { GeminiRespondingSpinner } from '../GeminiRespondingSpinner.js';
import { MaxSizedBox } from '../shared/MaxSizedBox.js';
const STATIC_HEIGHT = 1;
const RESERVED_LINE_COUNT = 5; // for tool name, status, padding etc.
const STATUS_INDICATOR_WIDTH = 3;
const MIN_LINES_SHOWN = 2; // show at least this many lines
// Large threshold to ensure we don't cause performance issues for very large
// outputs that will get truncated further MaxSizedBox anyway.
const MAXIMUM_RESULT_DISPLAY_CHARACTERS = 1000000;
export type TextEmphasis = 'high' | 'medium' | 'low';
export interface ToolMessageProps extends IndividualToolCallDisplay {
availableTerminalHeight?: number;
terminalWidth: number;
emphasis?: TextEmphasis;
renderOutputAsMarkdown?: boolean;
}
export const ToolMessage: React.FC<ToolMessageProps> = ({
name,
description,
resultDisplay,
status,
availableTerminalHeight,
terminalWidth,
emphasis = 'medium',
renderOutputAsMarkdown = true,
}) => {
const availableHeight = availableTerminalHeight
? Math.max(
availableTerminalHeight - STATIC_HEIGHT - RESERVED_LINE_COUNT,
MIN_LINES_SHOWN + 1, // enforce minimum lines shown
)
: undefined;
// Long tool call response in MarkdownDisplay doesn't repect availableTerminalHeight properly,
// we're forcing it to not render as markdown when the response is too long, it will fallback
// to render as plain text, which is contained within the terminal using MaxSizedBox
if (availableHeight) {
renderOutputAsMarkdown = false;
}
const childWidth = terminalWidth - 3; // account for padding.
if (typeof resultDisplay === 'string') {
if (resultDisplay.length > MAXIMUM_RESULT_DISPLAY_CHARACTERS) {
// Truncate the result display to fit within the available width.
resultDisplay =
'...' + resultDisplay.slice(-MAXIMUM_RESULT_DISPLAY_CHARACTERS);
}
}
return (
<Box paddingX={1} paddingY={0} flexDirection="column">
<Box minHeight={1}>
<ToolStatusIndicator status={status} />
<ToolInfo
name={name}
status={status}
description={description}
emphasis={emphasis}
/>
{emphasis === 'high' && <TrailingIndicator />}
</Box>
{resultDisplay && (
<Box paddingLeft={STATUS_INDICATOR_WIDTH} width="100%" marginTop={1}>
<Box flexDirection="column">
{typeof resultDisplay === 'string' && renderOutputAsMarkdown && (
<Box flexDirection="column">
<MarkdownDisplay
text={resultDisplay}
isPending={false}
availableTerminalHeight={availableHeight}
terminalWidth={childWidth}
/>
</Box>
)}
{typeof resultDisplay === 'string' && !renderOutputAsMarkdown && (
<MaxSizedBox maxHeight={availableHeight} maxWidth={childWidth}>
<Box>
<Text wrap="wrap">{resultDisplay}</Text>
</Box>
</MaxSizedBox>
)}
{typeof resultDisplay !== 'string' && (
<DiffRenderer
diffContent={resultDisplay.fileDiff}
filename={resultDisplay.fileName}
availableTerminalHeight={availableHeight}
terminalWidth={childWidth}
/>
)}
</Box>
</Box>
)}
</Box>
);
};
type ToolStatusIndicatorProps = {
status: ToolCallStatus;
};
const ToolStatusIndicator: React.FC<ToolStatusIndicatorProps> = ({
status,
}) => (
<Box minWidth={STATUS_INDICATOR_WIDTH}>
{status === ToolCallStatus.Pending && (
<Text color={Colors.AccentGreen}>o</Text>
)}
{status === ToolCallStatus.Executing && (
<GeminiRespondingSpinner
spinnerType="toggle"
nonRespondingDisplay={'⊷'}
/>
)}
{status === ToolCallStatus.Success && (
<Text color={Colors.AccentGreen}>✔</Text>
)}
{status === ToolCallStatus.Confirming && (
<Text color={Colors.AccentYellow}>?</Text>
)}
{status === ToolCallStatus.Canceled && (
<Text color={Colors.AccentYellow} bold>
-
</Text>
)}
{status === ToolCallStatus.Error && (
<Text color={Colors.AccentRed} bold>
x
</Text>
)}
</Box>
);
type ToolInfo = {
name: string;
description: string;
status: ToolCallStatus;
emphasis: TextEmphasis;
};
const ToolInfo: React.FC<ToolInfo> = ({
name,
description,
status,
emphasis,
}) => {
const nameColor = React.useMemo<string>(() => {
switch (emphasis) {
case 'high':
return Colors.Foreground;
case 'medium':
return Colors.Foreground;
case 'low':
return Colors.Gray;
default: {
const exhaustiveCheck: never = emphasis;
return exhaustiveCheck;
}
}
}, [emphasis]);
return (
<Box>
<Text
wrap="truncate-end"
strikethrough={status === ToolCallStatus.Canceled}
>
<Text color={nameColor} bold>
{name}
</Text>{' '}
<Text color={Colors.Gray}>{description}</Text>
</Text>
</Box>
);
};
const TrailingIndicator: React.FC = () => (
<Text color={Colors.Foreground} wrap="truncate">
{' '}
←
</Text>
);
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