import express, { Request, Response } from "express";
import { storage } from "../storage";
import { insertShoppingVendorSchema, ShoppingVendor } from "@repo/db/types";

const router = express.Router();

router.get("/", async (req: Request, res: Response): Promise<any> => {
  try {
    if (!req.user?.id) return res.status(401).json({ message: "Unauthorized" });
    const vendors = await storage.getShoppingVendorsByUser(req.user.id);
    return res.status(200).json(vendors);
  } catch (err) {
    return res.status(500).json({ error: "Failed to fetch vendors", details: String(err) });
  }
});

router.post("/", async (req: Request, res: Response): Promise<any> => {
  try {
    if (!req.user?.id) return res.status(401).json({ message: "Unauthorized" });
    const parseResult = insertShoppingVendorSchema.safeParse({ ...req.body, userId: req.user.id });
    if (!parseResult.success) {
      const firstError = Object.values(parseResult.error.flatten().fieldErrors)[0]?.[0] || "Invalid input";
      return res.status(400).json({ message: firstError });
    }
    const vendor = await storage.createShoppingVendor(parseResult.data);
    return res.status(201).json(vendor);
  } catch (err) {
    return res.status(500).json({ error: "Failed to create vendor", details: String(err) });
  }
});

router.put("/:id", async (req: Request, res: Response): Promise<any> => {
  try {
    const id = Number(req.params.id);
    if (isNaN(id)) return res.status(400).send("Invalid vendor ID");
    const vendor = await storage.updateShoppingVendor(id, req.body as Partial<ShoppingVendor>);
    return res.status(200).json(vendor);
  } catch (err) {
    return res.status(500).json({ error: "Failed to update vendor", details: String(err) });
  }
});

router.delete("/:id", async (req: Request, res: Response): Promise<any> => {
  try {
    const userId = req.user?.id;
    if (!userId) return res.status(401).json({ message: "Unauthorized" });
    const id = Number(req.params.id);
    if (isNaN(id)) return res.status(400).send("Invalid ID");
    const existing = await storage.getShoppingVendor(id);
    if (!existing) return res.status(404).json({ message: "Vendor not found" });
    if (existing.userId !== userId) return res.status(403).json({ message: "Forbidden" });
    const ok = await storage.deleteShoppingVendor(userId, id);
    if (!ok) return res.status(404).json({ message: "Vendor not found or already deleted" });
    return res.status(204).send();
  } catch (err) {
    return res.status(500).json({ error: "Failed to delete vendor", details: String(err) });
  }
});

export default router;