import mysql from "mysql2";
import dotenv from "dotenv";
dotenv.config();

const pool = mysql
  .createPool({
    host: process.env.DB_HOST,
    user: process.env.DB_USER,
    password: process.env.DB_PASSWORD,
    database: process.env.DB_NAME,
  })
  .promise();

export async function loginUser(username, password) {
  const [result] = await pool.query(
    "SELECT * FROM users WHERE username = ? AND password = ?",
    [username, password]
  );

  if (result.length > 0) {
    console.log("User found: ", result[0].username, " ", result[0].id);
    return { success: true, user: result[0] };
  } else {
    console.error(`Invalid username or password!; ${result[0]}`);
    return { success: false, message: "Invalid username or password" };
  }
}

export async function createUser(
  username,
  first_name,
  last_name,
  password,
  email
) {
  try {
    const [result] = await pool.query(
      "INSERT INTO users (username, first_name, last_name, password, email) VALUES (?, ?, ?, ?, ?)",
      [username, first_name, last_name, password, email]
    );

    console.log("User created successfully!");
    return { success: true };
  } catch (error) {
    console.error("Error creating user: ", error);
    return { success: false, message: "Error creating user" };
  }
}

export async function updateUser(
  username,
  first_name,
  last_name,
  password,
  email
) {
  try {
    const [result] = await pool.query(
      "UPDATE users SET first_name = ?, last_name = ?, password = ?, email = ? WHERE username = ?",
      [first_name, last_name, password, email, username]
    );
    return {
      success: true,
      message: "User updated successfully",
      resultOfquery: result,
    };
  } catch (error) {
    console.error("Error updating user: ", error);
    return {
      success: false,
      message: "Error updating user",
      resultOfquery: result,
    };
  }
}

export async function deleteUser(
  username,
  first_name,
  last_name,
  password,
  email
) {
  try {
    const [result] = await pool.query(
      "DELETE FROM users WHERE username = ?  AND password = ?",
      [username, password]
    );
    const resultOfquery = result.affectedRows;

    if (resultOfquery > 0) {
      console.log("User deleted successfully!");
      return {
        success: true,
        message: "User deleted successfully",
        resultOfquery: result,
      };
    }

    if (resultOfquery === 0) {
      console.log("Error deleting user.");
      return {
        success: false,
        message: "Error deleting user",
        resultOfquery: null,
      };
    }
  } catch (err) {}
}