import { Router, Request, Response } from "express";
import { searchTransceivers, getTransceiverById } from "../db/queries";
import { pool } from "../db/client";

export const transceiverRouter = Router();

// GET /api/transceivers — Search/list transceivers
transceiverRouter.get("/", async (req: Request, res: Response) => {
  try {
    const q = (p: string) => req.query[p] ? String(req.query[p]) : undefined;
    const result = await searchTransceivers({
      q: q("q"),
      form_factor: q("form_factor"),
      speed: q("speed"),
      speed_gbps: q("speed_gbps") ? parseFloat(q("speed_gbps")!) : undefined,
      category: q("category"),
      fiber_type: q("fiber_type"),
      reach_min: q("reach_min") ? parseInt(q("reach_min")!) : undefined,
      reach_max: q("reach_max") ? parseInt(q("reach_max")!) : undefined,
      wdm_type: q("wdm_type"),
      coherent: q("coherent") === "true" ? true : q("coherent") === "false" ? false : undefined,
      market_status: q("market_status"),
      vendor: q("vendor"),
      limit: q("limit") ? parseInt(q("limit")!) : 50,
      offset: q("offset") ? parseInt(q("offset")!) : 0,
    });
    res.json({ success: true, ...result });
  } catch (err) {
    console.error("Search transceivers error:", err);
    res.status(500).json({ success: false, error: "Internal server error" });
  }
});

// GET /api/transceivers/:id — Get single transceiver
transceiverRouter.get("/:id", async (req: Request, res: Response) => {
  try {
    const transceiver = await getTransceiverById(String(req.params.id));
    if (!transceiver) {
      res.status(404).json({ success: false, error: "Transceiver not found" });
      return;
    }
    res.json({ success: true, data: transceiver });
  } catch (err) {
    console.error("Get transceiver error:", err);
    res.status(500).json({ success: false, error: "Internal server error" });
  }
});

// GET /api/transceivers/:id/compatibility — Compatible switches for a transceiver
transceiverRouter.get("/:id/compatibility", async (req: Request, res: Response) => {
  try {
    const result = await pool.query(
      `SELECT sw.id, sw.model, sw.series, sw.category, sw.total_ports,
              sw.max_speed_gbps, sw.switching_capacity_tbps, sw.lifecycle_status,
              v.name as vendor_name, c.status, c.notes as compat_notes
       FROM compatibility c
       JOIN switches sw ON c.switch_id = sw.id
       LEFT JOIN vendors v ON sw.vendor_id = v.id
       WHERE c.transceiver_id::text = $1 AND c.status = 'compatible'
       ORDER BY v.name, sw.model`,
      [String(req.params.id)]
    );
    res.json({ success: true, data: result.rows });
  } catch (err) {
    console.error("Get transceiver compatibility error:", err);
    res.status(500).json({ success: false, error: "Internal server error" });
  }
});