require("dotenv").config();
const express = require("express");
const cors = require("cors");
const { log } = require("./logger");

const auth = require("./auth");
const privacyLawWebhooks = require("./routes/privacyLawWebhooks");
const pipelineRoutes = require("./routes/pipeline");
const { getToken, listTokens } = require("./tokenStore");

const app = express();
const PORT = process.env.PORT || 3002;

app.use(cors());

app.get("/health", (req, res) => {
  res.json({ ok: true, service: "race-nation-shopify-app-backendrftgyhujikod" });
});

app.get("/shops/:shop", (req, res) => {
  const shop = req.params.shop;
  const tokenRecord = getToken(shop);

  if (!tokenRecord) {
    return res.status(404).json({ status: 0, message: "Shop not found" });
  }

  return res.json({
    status: 1,
    shop,
    fields: {
      accessToken: tokenRecord.accessToken ? "present" : "missing",
      scope: tokenRecord.scope ? "present" : "missing",
      savedAt: tokenRecord.savedAt ? "present" : "missing",
      locationId: tokenRecord.locationId ? "present" : "missing",
      fulfillmentService: tokenRecord.fulfillmentService ? "present" : "missing",
    },
  });
});

app.get("/shops", (req, res) => {
  res.json({ shops: listTokens() });
});

app.use("/webhooks", privacyLawWebhooks);
app.use(express.json({ limit: "10mb" }));
app.use(express.urlencoded({ limit: "10mb", extended: true }));
app.use("/", auth);

app.post("/fulfillment", (req, res) => {
  console.log("POST /fulfillment:", req.body);
  res.sendStatus(200);
});

app.use("/pipeline", pipelineRoutes);

const server = app.listen(PORT, () => {
  log("general", `Server listening on port ${PORT}`);
});

server.on("error", (err) => {
  if (err.code === "EADDRINUSE") {
    console.error(`Port ${PORT} is already in use.`);
    process.exit(1);
  }

  console.error("Server error:", err);
  process.exit(1);
});