import { NextRequest, NextResponse } from "next/server";
import { exec } from "child_process";
import { promisify } from "util";
const execAsync = promisify(exec);
export const dynamic = "force-dynamic";
const QUANTCLAW_DATA_DIR = "/home/quant/apps/quantclaw-data";
const PYTHON = "python3";
/**
* Dark Pool Tracker API — FINRA ADF Block Trade Detection & Institutional Accumulation
*
* Endpoints:
* - GET /api/v1/dark-pool?action=volume&ticker=AAPL — Dark pool volume estimate (OTC vs lit exchange)
* - GET /api/v1/dark-pool?action=block-trades&ticker=TSLA — Detect large block trades
* - GET /api/v1/dark-pool?action=accumulation&ticker=NVDA&period=30 — Institutional accumulation/distribution pattern
* - GET /api/v1/dark-pool?action=off-exchange-ratio&ticker=SPY&period=20 — Off-exchange vs lit ratio trend
*/
export async function GET(request: NextRequest) {
const action = request.nextUrl.searchParams.get("action") || "volume";
const ticker = request.nextUrl.searchParams.get("ticker");
const period = request.nextUrl.searchParams.get("period") || "30";
if (!ticker) {
return NextResponse.json(
{ error: "Missing required parameter: ticker" },
{ status: 400 }
);
}
try {
let command: string;
switch (action) {
case "volume":
command = `${PYTHON} ${QUANTCLAW_DATA_DIR}/modules/dark_pool.py dark-pool-volume ${ticker}`;
break;
case "block-trades":
command = `${PYTHON} ${QUANTCLAW_DATA_DIR}/modules/dark_pool.py block-trades ${ticker}`;
break;
case "accumulation":
command = `${PYTHON} ${QUANTCLAW_DATA_DIR}/modules/dark_pool.py institutional-accumulation ${ticker} --period ${period}`;
break;
case "off-exchange-ratio":
command = `${PYTHON} ${QUANTCLAW_DATA_DIR}/modules/dark_pool.py off-exchange-ratio ${ticker} --period ${period}`;
break;
default:
return NextResponse.json(
{
error: `Unknown action: ${action}`,
available: ["volume", "block-trades", "accumulation", "off-exchange-ratio"]
},
{ status: 400 }
);
}
const { stdout, stderr } = await execAsync(command, {
timeout: 30000,
maxBuffer: 5 * 1024 * 1024 // 5MB buffer
});
if (stderr) {
console.error("Dark Pool Module stderr:", stderr);
}
try {
const result = JSON.parse(stdout);
return NextResponse.json(result);
} catch (parseError) {
// If output is not JSON, return as text
return NextResponse.json({
result: stdout.trim(),
warning: "Response was not valid JSON"
});
}
} catch (e: unknown) {
const errorMessage = e instanceof Error ? e.message : String(e);
console.error("Dark Pool API Error:", errorMessage);
return NextResponse.json(
{
error: errorMessage,
action,
ticker
},
{ status: 500 }
);
}
}
