import { Router, Request, Response } from "express";
import { storage } from "../storage";
import { forwardOtpToSeleniumBcbsMaAgent } from "../services/seleniumBcbsMaInsuranceEligibilityClient";
import { io } from "../socket";
import { enqueueSeleniumJob } from "../queue/jobRunner";

const router = Router();

function log(tag: string, msg: string, ctx?: any) {
  console.log(`${new Date().toISOString()} [${tag}] ${msg}`, ctx ?? "");
}

function emitSafe(socketId: string | undefined, event: string, payload: any) {
  if (!socketId || !io) return;
  try {
    const socket = io.sockets.sockets.get(socketId);
    if (socket) socket.emit(event, payload);
  } catch (err: any) {
    log("bcbs-ma-route", "emit failed", { socketId, event, err: err?.message });
  }
}

/**
 * POST /bcbs-ma-eligibility
 * Enqueues a BCBS MA eligibility check.
 * Body: { data: { memberId, dateOfBirth, firstName, lastName, insuranceSiteKey }, socketId }
 */
router.post("/bcbs-ma-eligibility", async (req: Request, res: Response): Promise<any> => {
  if (!req.body.data) {
    return res.status(400).json({ error: "Missing data for BCBS MA eligibility check" });
  }
  if (!req.user?.id) {
    return res.status(401).json({ error: "Unauthorized: user info missing" });
  }

  try {
    const rawData =
      typeof req.body.data === "string" ? JSON.parse(req.body.data) : req.body.data;

    const credentials = await storage.getInsuranceCredentialByUserAndSiteKey(req.user.id, "BCBS_MA");
    if (!credentials) {
      return res.status(404).json({
        error: "No BCBS MA credentials found. Please add them in Settings → Insurance Credentials.",
      });
    }

    // Fetch provider NPI — use the first one on file for this user
    const npiProviders = await storage.getNpiProvidersByUser(req.user.id);
    const npiNumber = npiProviders?.[0]?.npiNumber ?? "";
    if (!npiNumber) {
      return res.status(404).json({
        error: "No NPI provider found. Please add one in Settings → NPI Providers.",
      });
    }

    const enrichedData = {
      ...rawData,
      bcbsMaUsername: credentials.username,
      bcbsMaPassword: credentials.password,
      providerNpi: npiNumber,
    };

    const socketId: string | undefined = req.body.socketId;

    const jobId = enqueueSeleniumJob({
      jobType: "bcbs-ma-eligibility-check",
      userId: req.user.id,
      socketId,
      enrichedPayload: enrichedData,
      insuranceId: String(rawData.memberId ?? "").trim(),
      formFirstName: rawData.firstName,
      formLastName: rawData.lastName,
      formDob: rawData.dateOfBirth,
    });

    log("bcbs-ma-route", "job enqueued", { jobId, insuranceId: rawData.memberId });
    return res.json({ status: "queued", jobId });
  } catch (err: any) {
    console.error("[bcbs-ma-route] enqueue failed:", err);
    return res.status(500).json({ error: err.message || "Failed to enqueue BCBS MA selenium job" });
  }
});

/**
 * POST /selenium/submit-otp
 * Forwards the OTP to the Python agent (side-channel, bypasses queue).
 * Body: { session_id, otp, socketId? }
 */
router.post("/selenium/submit-otp", async (req: Request, res: Response): Promise<any> => {
  const { session_id: sessionId, otp, socketId } = req.body;
  if (!sessionId || !otp) {
    return res.status(400).json({ error: "session_id and otp are required" });
  }

  try {
    const r = await forwardOtpToSeleniumBcbsMaAgent(sessionId, otp);
    emitSafe(socketId, "selenium:otp_submitted", { session_id: sessionId, result: r });
    return res.json(r);
  } catch (err: any) {
    console.error("[bcbs-ma-route] submit-otp failed:", err?.message || err);
    return res.status(500).json({
      error: "Failed to forward OTP to selenium agent",
      detail: err?.message || err,
    });
  }
});

export default router;