import { ErrorCode, McpError } from '@modelcontextprotocol/sdk/types.js';
import { getLinearClient } from '../../utils/linear-client.js';
import { defineTool } from '../shared/tool-definition.js';
import { z } from 'zod';
import { mapIssueToDetails } from './shared.js';
// Keep only the most commonly used fields
const IssueUpdateSchema = {
// Required field
id: z.string().describe('Issue ID to update'),
// Optional fields (same as create, except teamId which can't be changed)
title: z.string().optional().describe('New title'),
description: z.string().optional().describe('New description in markdown'),
priority: z.number().optional().describe('Priority (0=None, 1=Urgent, 2=High, 3=Normal, 4=Low)'),
assigneeId: z.string().optional().describe('Assignee user ID'),
labelIds: z.array(z.string()).optional().describe('Label IDs'),
stateId: z.string().optional().describe('Workflow state ID'),
};
export const updateIssueTool = defineTool({
name: 'update_issue',
description: 'Update an existing Linear issue',
inputSchema: IssueUpdateSchema,
handler: async ({ id, title, description, priority, assigneeId, labelIds, stateId }) => {
const linearClient = getLinearClient();
// Get the issue to update
const issueToUpdate = await linearClient.issue(id);
if (!issueToUpdate) {
throw new McpError(ErrorCode.InvalidParams, `Issue with ID '${id}' not found.`);
}
// Build update payload with only defined fields
const updatePayload = {
...(title !== undefined && { title }),
...(description !== undefined && { description }),
...(priority !== undefined && { priority }),
...(assigneeId !== undefined && { assigneeId }),
...(labelIds !== undefined && { labelIds }),
...(stateId !== undefined && { stateId }),
};
// Update the issue
try {
const issueUpdate = await linearClient.updateIssue(id, updatePayload);
const updatedIssue = await issueUpdate.issue;
if (!updatedIssue) {
throw new McpError(
ErrorCode.InternalError,
`Failed to update issue or retrieve details. Sync ID: ${issueUpdate.lastSyncId}`,
);
}
const detailedUpdatedIssue = await mapIssueToDetails(updatedIssue, false);
return { content: [{ type: 'text', text: JSON.stringify(detailedUpdatedIssue) }] };
} catch (error) {
if (error instanceof McpError) throw error;
throw new McpError(
ErrorCode.InternalError,
`Error updating issue: ${(error as Error).message}`,
);
}
},
});
