47 lines
1.5 KiB
TypeScript
47 lines
1.5 KiB
TypeScript
// apps/web/server/api/mcp/screenshot.post.ts
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import { defineEventHandler, readBody, createError } from 'h3';
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import { sendToClient, getLastActiveClientId, isClientConnected } from '../../utils/mcp-sync-state';
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import {
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allocateRequestId,
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registerPending,
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type ScreenshotRequestBody,
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} from '../../utils/mcp-screenshot-rpc';
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export default defineEventHandler(async (event) => {
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const body = (await readBody(event)) as ScreenshotRequestBody;
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const timeoutMs = Math.min(body.timeoutMs ?? 15000, 60000);
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// 1. Resolve target renderer — fail fast if none
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const targetClientId = getLastActiveClientId();
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if (!targetClientId || !isClientConnected(targetClientId)) {
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throw createError({
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statusCode: 503,
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statusMessage:
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'No active editor client — make sure an Electron window or /editor tab is open and focused.',
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});
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}
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// 2. Allocate request id and try to send
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const requestId = allocateRequestId();
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const sent = sendToClient(targetClientId, {
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type: 'screenshot:request',
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requestId,
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bounds: body.bounds,
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nodeId: body.nodeId,
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opts: body.opts,
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timeoutMs,
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});
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// 3. Only register pending + start timeout AFTER successful send (Q3 decision)
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if (!sent) {
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throw createError({
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statusCode: 503,
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statusMessage:
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'Failed to deliver screenshot request — target editor client disconnected between check and send.',
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});
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}
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// 4. Await renderer response (or timeout)
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return await registerPending(requestId, timeoutMs);
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});
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