import { Request, Response } from "express";
import { User } from "../models/user";
import {
  ADMIN_MAX_USERS_PER_PAGE,
  MONGODB_IGNORED_FIELDS_USER,
} from "../utils/constants";

export async function GetAllUsers(req: Request, res: Response) {
  try {
    const pageSize = ADMIN_MAX_USERS_PER_PAGE;

    // Get the current page number (default: 1)
    const page = parseInt(req.query.page as string, pageSize) || 1;

    // Calculate the skipping (skip) based on the current page
    const skip = (page - 1) * pageSize;

    // Get the total number of users
    const totalUsers = await User.countDocuments({}).lean();

    // Calculate the total number of pages
    const totalPages = Math.ceil(totalUsers / pageSize);

    // Query for the current page with limit and skip
    const users = await User.find({})
      .lean()
      .select(MONGODB_IGNORED_FIELDS_USER)
      .skip(skip)
      .limit(pageSize);

    // Respond with users and page information
    res.json({
      users,
      totalPages,
    });
  } catch (error) {
    console.error("Error fetching users:", error);
    res.status(500).json({ error: "Internal Server Error" });
  }
}