import type { JulesClient } from '@google/jules-sdk';
import { showDiff } from '../functions/show-diff.js';
import { defineTool, toMcpResponse } from './utils.js';
export default defineTool({
name: 'show_code_diff',
description:
'Show the actual code diff for files from a Jules session. ' +
'Returns unified diff format that can be displayed to users. ' +
'Use after get_code_review_context to drill into specific file changes. ' +
'Can optionally show diff from a specific activity (use activity IDs from get_code_review_context output).',
inputSchema: {
type: 'object',
properties: {
sessionId: {
type: 'string',
description: 'The Jules session ID to get diff from.',
},
file: {
type: 'string',
description:
'File path to show diff for. Omit to get all diffs (may be large).',
},
activityId: {
type: 'string',
description:
'Optional activity ID to get diff from a specific activity instead of the session outcome. ' +
'Use activity IDs shown in get_work_in_progress output.',
},
},
required: ['sessionId'],
},
handler: async (client: JulesClient, args: any) => {
const result = await showDiff(client, args.sessionId, {
file: args.file,
activityId: args.activityId,
});
if (!result.unidiffPatch) {
const context = args.activityId
? `activity ${args.activityId}`
: 'this session';
return toMcpResponse(`No changes found in ${context}.`);
}
return toMcpResponse(result.unidiffPatch);
},
});
