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";
/**
* Earnings Quality Metrics API — Accruals Ratio, Beneish M-Score, Altman Z-Score
*
* Fraud and distress detection via three proven models:
* - Accruals Ratio: (Net Income - OCF) / Total Assets (>0.1 = manipulation risk)
* - Beneish M-Score: 8-variable fraud detection (>-2.22 = likely manipulator)
* - Altman Z-Score: Bankruptcy prediction (<1.81 = distress, >2.99 = safe)
*
* Endpoints:
* - GET /api/v1/earnings-quality?action=analyze&ticker=AAPL — Full analysis (all 3 metrics)
* - GET /api/v1/earnings-quality?action=accruals-trend&ticker=AAPL — Accruals ratio trend over 4 periods
* - GET /api/v1/earnings-quality?action=fraud-indicators&ticker=AAPL — Quick red flags summary
*/
export async function GET(request: NextRequest) {
const action = request.nextUrl.searchParams.get("action") || "analyze";
const ticker = request.nextUrl.searchParams.get("ticker");
if (!ticker) {
return NextResponse.json(
{ error: "Missing required parameter: ticker" },
{ status: 400 }
);
}
try {
let command: string;
switch (action) {
case "analyze":
command = `${PYTHON} ${QUANTCLAW_DATA_DIR}/modules/earnings_quality.py analyze ${ticker}`;
break;
case "accruals-trend":
command = `${PYTHON} ${QUANTCLAW_DATA_DIR}/modules/earnings_quality.py accruals-trend ${ticker}`;
break;
case "fraud-indicators":
command = `${PYTHON} ${QUANTCLAW_DATA_DIR}/modules/earnings_quality.py fraud-indicators ${ticker}`;
break;
default:
return NextResponse.json(
{
error: `Unknown action: ${action}`,
available: ["analyze", "accruals-trend", "fraud-indicators"]
},
{ status: 400 }
);
}
const { stdout, stderr } = await execAsync(command, {
timeout: 30000,
maxBuffer: 5 * 1024 * 1024 // 5MB buffer
});
if (stderr) {
console.error("Earnings Quality Module stderr:", stderr);
}
try {
const result = JSON.parse(stdout);
return NextResponse.json(result);
} catch (parseError) {
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("Earnings Quality API Error:", errorMessage);
return NextResponse.json(
{
error: errorMessage,
action,
ticker
},
{ status: 500 }
);
}
}
