/
models_wallet_bitcoin.go
463 lines (370 loc) · 10.8 KB
/
models_wallet_bitcoin.go
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package marketplace
import (
"errors"
"fmt"
"time"
"qxklmrhx7qkzais6.onion/Tochka/tochka-free-market/modules/apis"
)
/*
Models
*/
type UserBitcoinWallet struct {
PublicKey string `json:"public_key" gorm:"primary_key"`
UserUuid string `json:"-"`
IsLocked bool `json:"-"`
User User `json:"-"`
CreatedAt *time.Time `json:"created_at,omitempty"`
UpdatedAt *time.Time `json:"updated_at,omitempty"`
DeletedAt *time.Time `json:"deleted_at,omitempty"`
}
type UserBitcoinWalletBalance struct {
ID int `json:"id" gorm:"primary_key"`
PublicKey string `json:"public_key" gorm:"index"`
Balance float64 `json:"balance"`
UnconfirmedBalance float64 `json:"unconfirmed_balance"`
Type string `json:"type"`
CreatedAt time.Time `json:"created_at"`
UserBitcoinWallet UserBitcoinWallet `gorm:"AssociationForeignKey:PublicKey" json:"-"`
}
type UserBitcoinWallets []UserBitcoinWallet
type UserBitcoinWalletAction struct {
ID int `json:"id" gorm:"primary_key"`
UserUuid string `json:"user_uuid" gorm:"user_uuid"`
PaymentReceiptUuid string `json:"payment_receipt_uuid" gorm:"payment_receipt_uuid"`
PublicKey string `json:"public_key" gorm:"index"`
Action string `json:"action"`
Amount float64 `json:"amount"`
CreatedAt time.Time `json:"created_at"`
User User `json:"-"`
UserBitcoinWallet UserBitcoinWallet `gorm:"AssociationForeignKey:PublicKey" json:"-"`
PaymentReceipt PaymentReceipt `json:"-"`
}
/*
Model Methods
*/
func (w UserBitcoinWallet) UpdateBalance(force bool) (UserBitcoinWalletBalance, error) {
d, _ := time.ParseDuration("1m")
now := time.Now()
if !w.UpdatedAt.Add(d).Before(now) && !force {
return UserBitcoinWalletBalance{}, errors.New("BitcoinWallet was updated recently. Please wait.")
}
w.UpdatedAt = &now
err := w.Save()
if err != nil {
return UserBitcoinWalletBalance{}, err
}
balance, err := apis.GetAmountOnBTCAddress(w.PublicKey)
if err != nil {
return UserBitcoinWalletBalance{}, err
}
currentBalance := w.CurrentBalance()
if currentBalance.Balance != balance.Balance || currentBalance.UnconfirmedBalance != balance.UnconfirmedBalance {
uwb := UserBitcoinWalletBalance{
PublicKey: w.PublicKey,
Balance: balance.Balance,
UnconfirmedBalance: balance.UnconfirmedBalance,
CreatedAt: now,
Type: "blockchain",
}
uwb.Save()
var (
action string
amount float64
)
if currentBalance.Balance != balance.Balance {
action = "Balance updated"
amount = balance.Balance
} else {
action = "Unconfirmed balance updated"
amount = balance.UnconfirmedBalance
}
uwa := UserBitcoinWalletAction{
UserUuid: w.UserUuid,
PublicKey: w.PublicKey,
Action: action,
Amount: amount,
CreatedAt: time.Now(),
}
uwa.Save()
return uwb, nil
}
return currentBalance, nil
}
func (w UserBitcoinWallet) CurrentBalance() UserBitcoinWalletBalance {
var uwb UserBitcoinWalletBalance
database.
Where(&UserBitcoinWalletBalance{PublicKey: w.PublicKey}).
Order("created_at DESC").
First(&uwb)
return uwb
}
/*
Database methods
*/
// UserBitcoinWallet
func (w UserBitcoinWallet) Validate() error {
if w.PublicKey == "" {
return errors.New("Wrong wallet")
}
return nil
}
func (w UserBitcoinWallet) Save() error {
err := w.Validate()
if err != nil {
return err
}
return w.SaveToDatabase()
}
func (w UserBitcoinWallet) Remove() error {
return database.Delete(w).Error
}
func (w UserBitcoinWallet) SaveToDatabase() error {
if existing, _ := FindUserBitcoinWalletByPublicKey(w.PublicKey); existing == nil {
return database.Create(&w).Error
}
return database.Save(&w).Error
}
// UserBitcoinWalletBalance
func (w UserBitcoinWalletBalance) Validate() error {
if w.PublicKey == "" {
return errors.New("Wrong wallet")
}
return nil
}
func (w UserBitcoinWalletBalance) Save() error {
err := w.Validate()
if err != nil {
return err
}
return w.SaveToDatabase()
}
func (w UserBitcoinWalletBalance) Remove() error {
return database.Delete(w).Error
}
func (w UserBitcoinWalletBalance) SaveToDatabase() error {
if w.ID != 0 {
return database.Save(&w).Error
}
w.ID = GetNextUserBitcoinWalletbalanceID()
return database.Create(&w).Error
}
func (w UserBitcoinWalletAction) Validate() error {
if w.UserUuid == "" {
return errors.New("Wrong UserUuid")
}
return nil
}
func (w UserBitcoinWalletAction) Save() error {
err := w.Validate()
if err != nil {
return err
}
return w.SaveToDatabase()
}
func (w UserBitcoinWalletAction) Remove() error {
return database.Delete(w).Error
}
func (w UserBitcoinWalletAction) SaveToDatabase() error {
if w.ID != 0 {
return database.Save(&w).Error
}
w.ID = GetNextUserBitcoinWalletActionID()
return database.Create(&w).Error
}
/*
Model Methods
*/
func (w UserBitcoinWallets) Balance() apis.BTCWalletBalance {
var balance apis.BTCWalletBalance
for _, b := range w {
balance.Balance += b.CurrentBalance().Balance
balance.UnconfirmedBalance += b.CurrentBalance().UnconfirmedBalance
}
return balance
}
func (ws UserBitcoinWallets) prepareTransaction(address string, amount float64) ([]string, []apis.BTCPayment, error) {
if amount > ws.Balance().Balance {
return []string{}, []apis.BTCPayment{}, errors.New("Amount is greater than balance")
}
if !bitcoinRegexp.MatchString(address) {
return []string{}, []apis.BTCPayment{}, errors.New("Wrong BTC address")
}
if len(ws) == 0 {
return []string{}, []apis.BTCPayment{}, errors.New("Zero-length user wallets")
}
addresses := []string{}
for _, w := range ws {
if w.IsLocked {
return []string{}, []apis.BTCPayment{}, errors.New("Wallet is currently locked")
}
cb := w.CurrentBalance()
if cb.UnconfirmedBalance != float64(0.0) {
return []string{}, []apis.BTCPayment{}, errors.New("Please wait for previus transactions to confirm")
}
if cb.Balance > float64(0.0) {
addresses = append(addresses, w.PublicKey)
}
}
payments := []apis.BTCPayment{
{Address: address, Amount: amount},
}
return addresses, payments, nil
}
func (ws UserBitcoinWallets) Send(address string, amount float64) (PaymentReceipt, error) {
addresses, payments, err := ws.prepareTransaction(address, amount)
if err != nil {
return PaymentReceipt{}, err
}
transactionResult, err := apis.SendBTCFromMultipleWalletsWithAmountSplit(addresses, payments)
if err != nil {
return PaymentReceipt{}, err
}
receipt, err := CreateBTCPaymentReceipt(transactionResult)
if err != nil {
return PaymentReceipt{}, err
}
uwa := UserBitcoinWalletAction{
Action: fmt.Sprintf("Sent %f BTC to %s", amount, address),
UserUuid: ws[0].UserUuid,
CreatedAt: time.Now(),
PaymentReceiptUuid: receipt.Uuid,
}
return receipt, uwa.Save()
}
func (ws UserBitcoinWallets) EstimateFee(address string, amount float64) (float64, string, error) {
addresses, payments, err := ws.prepareTransaction(address, amount)
if err != nil {
return 0.0, "", err
}
result, err := apis.EstimateBTCFeeFromMultipleWalletsWithAmountSplit(addresses, payments)
return float64(result.Fee) / 1e8, result.Description, err
}
/*
Queries
*/
func GetNextUserBitcoinWalletActionID() int {
var userBitcoinWalletAction UserBitcoinWalletAction
database.
Order("ID desc").
First(&userBitcoinWalletAction)
return userBitcoinWalletAction.ID + 1
}
func GetNextUserBitcoinWalletbalanceID() int {
var userBitcoinWalletAction UserBitcoinWalletBalance
database.
Order("ID desc").
First(&userBitcoinWalletAction)
return userBitcoinWalletAction.ID + 1
}
func GetAllUserBitcoinWallets() []UserBitcoinWallet {
var items []UserBitcoinWallet
database.Find(&items)
return items
}
func GetAlllUserBitcoinWalletBalances() []UserBitcoinWalletBalance {
var items []UserBitcoinWalletBalance
database.Find(&items)
return items
}
func GetAllUserBitcoinWalletActions() []UserBitcoinWalletAction {
var items []UserBitcoinWalletAction
database.Find(&items)
return items
}
func FindUserBitcoinWalletByPublicKey(publicKey string) (*UserBitcoinWallet, error) {
var userBitcoinWallet UserBitcoinWallet
err := database.
Where(&UserBitcoinWallet{PublicKey: publicKey}).
First(&userBitcoinWallet).
Error
if err != nil {
return nil, err
}
return &userBitcoinWallet, err
}
func FindBitcoinWalletsForUser(userUuid string) []UserBitcoinWallet {
var wallets []UserBitcoinWallet
database.
Where(&UserBitcoinWallet{UserUuid: userUuid}).
Find(&wallets)
return wallets
}
func FindUserBitcoinWalletActionsForUser(userUuid string) []UserBitcoinWalletAction {
var actions []UserBitcoinWalletAction
database.
Where(&UserBitcoinWalletAction{UserUuid: userUuid}).
Order("created_at ASC").
Preload("PaymentReceipt").
Find(&actions)
for i := range actions {
paymentReceipt := actions[i].PaymentReceipt
if paymentReceipt.Type == "bitcoin" && paymentReceipt.SerializedData != "" {
btcPaymentResult, err := paymentReceipt.BTCPaymentResult()
if err != nil {
continue
}
actions[i].PaymentReceipt.BTCPaymentResultItem = &btcPaymentResult
}
}
return actions
}
// FindRecentBitcoinWallets returns wallets no older than 1 day
func FindRecentBitcoinWallets() []UserBitcoinWallet {
var wallets []UserBitcoinWallet
database.
Where("created_at > ?", time.Now().AddDate(0, 0, -7)).
Find(&wallets)
return wallets
}
func FindAllBitcoinWallets() []UserBitcoinWallet {
var wallets []UserBitcoinWallet
database.Find(&wallets)
return wallets
}
/*
CRUD
*/
func CreateBitcoinWallet(user User) (*UserBitcoinWallet, error) {
address, err := apis.GenerateBTCAddress("user_wallet")
if err != nil {
return nil, err
}
uw := UserBitcoinWallet{
PublicKey: address,
UserUuid: user.Uuid,
}
uwa := UserBitcoinWalletAction{
UserUuid: uw.UserUuid,
PublicKey: uw.PublicKey,
Action: "BitcoinWallet created",
Amount: float64(0.0),
}
uwa.Save()
return &uw, uw.Save()
}
// Create views and other representatives
func setupUserBitcoinBalanceViews() {
database.Exec("DROP VIEW IF EXISTS v_user_bitcoin_wallet_balances CASCADE;")
database.Exec(`
CREATE VIEW v_user_bitcoin_wallet_balances AS (
select sum(balance) as balance, sum(unconfirmed_balance) as unconfirmed_balance, user_uuid, username from (
WITH UserBitcoinWalletBalancesUpdateTimes As (
SELECT public_key, MAX(created_at) max_timestamp
FROM user_bitcoin_wallet_balances
GROUP BY public_key
)
select
uwb.created_at, uwb.public_key, uwb.balance, uwb.unconfirmed_balance, uw.user_uuid, u.username
from
user_bitcoin_wallet_balances uwb
join
user_bitcoin_wallets uw on uw.public_key=uwb.public_key
join
users u on u.uuid=uw.user_uuid
inner join
UserBitcoinWalletBalancesUpdateTimes t on t.public_key=uwb.public_key and uwb.created_at = t.max_timestamp
) uwb
group by username, user_uuid
order by balance desc
);`)
}