//
// Created by vfs on 02.05.2024.
//

package main

import "errors"
import "time"
import "golang.org/x/crypto/bcrypt"
import "database/sql"
import _ "github.com/lib/pq"
import "fmt"

import "github.com/stripe/stripe-go/v78"
import "github.com/stripe/stripe-go/v78/customer"

var ErrRoRecord           = errors.New("no matching record found")
var ErrInvalidCredentials = errors.New("invalid credentials")
var ErrDuplicateEmail     = errors.New("duplicate email")

type Account struct {
	Id int32
	Username string
	Password []byte
	Color int32
	Firstname string
	Lastname string
	Email string
	Created time.Time
	StripeID string
}

type Usermodel struct {
	DB *sql.DB
}

func (m *Usermodel) Insert(username string, password string, firstname string, lastname string, email string) error {

	params := &stripe.CustomerParams{
		Name: stripe.String(fmt.Sprintf("%s %s", firstname, lastname)),
		Email: stripe.String(email),
	}
	customer, err := customer.New(params)

	hashedpassword, err := bcrypt.GenerateFromPassword([]byte(password), 12)
	stmt := `INSERT INTO accounts (username, password, firstname, lastname, email, created, stripe_id) VALUES ($1, $2, $3, $4, $5, NOW(), $6);`

	_, err = m.DB.Exec(stmt, username, string(hashedpassword), firstname, lastname, email, customer.ID)
	if err != nil {
		fmt.Println(err)
	}


	return nil
}

func (m *Usermodel) Delete(id int32) error {
	account, err := users.Get_account(id)
	result, err := customer.Del(account.StripeID, nil)
	if err != nil {
		fmt.Println(err)
	}
	fmt.Println(result)
	stmt := `DELETE FROM accounts WHERE id = $1;`

	_, err = m.DB.Exec(stmt, id)
	if err != nil {
		fmt.Println(err)
	}


	return nil
}

func (m *Usermodel) Get_account(id int32) (Account, error) {
	if id == 0 {
		return Account{}, nil
	}
	stmt := `SELECT id, username, password, color, firstname, lastname, email, created, stripe_id FROM accounts WHERE id = $1;`
	row := m.DB.QueryRow(stmt, id)

	var account Account
	err := row.Scan(&account.Id, &account.Username, &account.Password, &account.Color, &account.Firstname, &account.Lastname, &account.Email, &account.Created, &account.StripeID)

	if err == sql.ErrNoRows {
		return Account{}, sql.ErrNoRows
	} else if err != nil {
		return Account{}, err
	}

	return account, nil
}

func (m *Usermodel) Authenticate(username string, password string) (int32, error) {
	var id int32
	var hashedpassword []byte
	row := m.DB.QueryRow("SELECT id, password FROM accounts WHERE username = $1", username)
	err := row.Scan(&id, &hashedpassword)
	if err == sql.ErrNoRows {
		return 0, ErrInvalidCredentials
	}

	err = bcrypt.CompareHashAndPassword(hashedpassword, []byte(password))
	if err == bcrypt.ErrMismatchedHashAndPassword {
		return 0, ErrInvalidCredentials
	} else if err != nil {
		return 0, err
	}

	return id, nil
}