package models

import (
	"log"
	"main/configs"
)

type User struct {
	ID        int    `json:"id"`
	Name      string `json:"name"`
	Email     string `json:"email"`
	Password  string `json:"password"`
	Slat      string `json:"slat"`
	CreatedAt string `json:"created_at"`
	UpdatedAt string `json:"updated_at"`
}

func (user *User) Create() error {
	db, err := configs.GetDB()
	if err != nil {
		log.Println(err)
		return err
	}
	defer db.Close()
	stmt, err := db.Prepare("INSERT INTO users(name, email, created_at, updated_at) values(?, ?, ?, ?)")
	if err != nil {
		log.Println(err)
		return err
	}
	defer stmt.Close()
	result, err := stmt.Exec(user.Name, user.Email, user.CreatedAt, user.UpdatedAt)
	if err != nil {
		log.Println(err)
		return err
	}
	id, err := result.LastInsertId()
	if err != nil {
		return err
	}
	user.ID = int(id)
	return nil
}

func (user *User) Delete() error {
	db, err := configs.GetDB()
	if err != nil {
		log.Println(err)
		return err
	}
	defer db.Close()
	stmt, err := db.Prepare("DELETE FROM users WHERE id = ?")
	if err != nil {
		log.Println(err)
		return err
	}
	defer stmt.Close()
	_, err = stmt.Exec(user.ID)
	if err != nil {
		log.Println(err)
		return err
	}
	return nil
}

func (user *User) Update() error {
	db, err := configs.GetDB()
	if err != nil {
		log.Println(err)
		return err
	}
	defer db.Close()
	stmt, err := db.Prepare("UPDATE users SET name = ?, email = ?, updated_at = ? WHERE id = ?")
	if err != nil {
		log.Println(err)
		return err
	}
	defer stmt.Close()
	_, err = stmt.Exec(user.Name, user.Email, user.UpdatedAt, user.ID)
	if err != nil {
		log.Println(err)
		return err
	}
	return nil
}

func (user *User) Get() error {
	db, err := configs.GetDB()
	if err != nil {
		log.Println(err)
		return err
	}
	defer db.Close()
	err = db.QueryRow("SELECT name, email, created_at, updated_at FROM users WHERE id = ?", user.ID).Scan(&user.Name, &user.Email, &user.CreatedAt, &user.UpdatedAt)
	if err != nil {
		log.Println(err)
		return err
	}
	return nil
}

func (user *User) GetAll() ([]User, error) {
	db, err := configs.GetDB()
	if err != nil {
		log.Println(err)
		return nil, err
	}
	defer db.Close()
	rows, err := db.Query("SELECT id, name, email, created_at, updated_at FROM users")
	if err != nil {
		log.Println(err)
		return nil, err
	}
	defer rows.Close()
	var users []User
	for rows.Next() {
		var user User
		err := rows.Scan(&user.ID, &user.Name, &user.Email, &user.CreatedAt, &user.UpdatedAt)
		if err != nil {
			log.Println(err)
			return nil, err
		}
		users = append(users, user)
	}
	return users, nil
}

func (user *User) GetByEmail() error {
	db, err := configs.GetDB()
	if err != nil {
		log.Println(err)
		return err
	}
	defer db.Close()
	err = db.QueryRow("SELECT id, name, email, created_at, updated_at FROM users WHERE email = ?", user.Email).Scan(&user.ID, &user.Name, &user.Email, &user.CreatedAt, &user.UpdatedAt)
	if err != nil {
		log.Println(err)
		return err
	}
	return nil
}

func QueryUsers(page, pagesize int) (list []interface{}) {
	db, err := configs.GetDB()
	if err != nil {
		log.Println(err)
		return
	}
	defer db.Close()
	rows, err := db.Query("SELECT id, name, email, created_at, updated_at FROM users LIMIT ?, ?", (page-1)*pagesize, pagesize)
	if err != nil {
		log.Println(err)
		return
	}
	defer rows.Close()
	for rows.Next() {
		var user User
		err := rows.Scan(&user.ID, &user.Name, &user.Email, &user.CreatedAt, &user.UpdatedAt)
		if err != nil {
			log.Println(err)
			return
		}
		list = append(list, user)
	}
	return
}

func CountUsers() (count int) {
	db, err := configs.GetDB()
	if err != nil {
		log.Println(err)
		return
	}
	defer db.Close()
	err = db.QueryRow("SELECT COUNT(*) FROM users").Scan(&count)
	if err != nil {
		log.Println(err)
		return
	}
	return
}