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package com.spec.service;

import com.spec.DBUtil;
import com.spec.model.UserAccount;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.List;

public class UserAccountService implements IUserAccountService{

    @Override
    public int createAccount(UserAccount user) throws Exception {
        //
        int pk = 0;
        final String sql = "INSERT INTO accounts (username, password, email, created_on, last_login) " +
                           "VALUES(?, ?, ?, now(), NULL)";

        try(Connection c = DBUtil.getConn();
                PreparedStatement ps = c.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);){
            // установка параметра userName
            ps.setString(1, user.getUserName());
            ps.setString(2, user.getPassword());
            ps.setString(3, user.getEmail());
            // выполнение запроса
            int res = ps.executeUpdate();
            System.out.println("createAccount.res=" + res);
            //
            try(ResultSet rs = ps.getGeneratedKeys()){
                ResultSetMetaData meta = rs.getMetaData();
                System.out.println("meta.getColumnCount()=" + meta.getColumnCount());
                for (int i = 1; i <= meta.getColumnCount(); i++) {
                    System.out.println("meta.colName=" + meta.getColumnName(i));
                }
                if(rs.next()){
                    //pk = rs.getInt(1);
                    pk = rs.getInt("user_id");
                    System.out.println("createAccount.pk=" + pk);
                }
            }
        }catch(SQLException ex){
            ex.printStackTrace();
            throw new Exception("error while createAccount", ex);
        }
        return pk;
    }

    @Override
    public boolean setAccount(UserAccount user) throws Exception {

        return true;
    }

    @Override
    public void removeAccount(String userName) throws Exception {
        // -- DELETE
        final String sql = "DELETE FROM accounts WHERE username=?";
        try(Connection c = DBUtil.getConn();
                PreparedStatement ps = c.prepareStatement(sql);){
            // установка параметра userName
            ps.setString(1, userName);
            // выполнение запроса
            int res = ps.executeUpdate();
            System.out.println("removeAccount.res=" + res);
        }catch(SQLException ex){
            ex.printStackTrace();
            throw new Exception("error while removeAccount", ex);
        }
    }

    @Override
    public UserAccount getUserAccount(String userName) {
        return null;
    }

    @Override
    public List<UserAccount> getAll() {
        return null;
    }

    @Override
    public List<UserAccount> findAccounts(Object /*Filter*/ filter) {
        return null;
    }
    //
}