124 lines
2.7 KiB
Go
124 lines
2.7 KiB
Go
package currency
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import (
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"context"
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"database/sql"
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"time"
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"github.com/ethereum/go-ethereum/event"
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"github.com/status-im/status-go/services/wallet/market"
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"github.com/status-im/status-go/services/wallet/token"
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"github.com/status-im/status-go/services/wallet/walletevent"
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)
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const (
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EventCurrencyTickUpdateFormat walletevent.EventType = "wallet-currency-tick-update-format"
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currencyFormatUpdateInterval = 1 * time.Hour
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)
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type Service struct {
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currency *Currency
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db *DB
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tokenManager *token.Manager
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walletFeed *event.Feed
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cancelFn context.CancelFunc
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}
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func NewService(db *sql.DB, walletFeed *event.Feed, tokenManager *token.Manager, marketManager *market.Manager) *Service {
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return &Service{
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currency: NewCurrency(marketManager),
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db: NewCurrencyDB(db),
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tokenManager: tokenManager,
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walletFeed: walletFeed,
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}
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}
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func (s *Service) Start() {
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// Update all fiat currency formats in cache
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fiatFormats, err := s.getAllFiatCurrencyFormats()
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if err == nil {
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_ = s.db.UpdateCachedFormats(fiatFormats)
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}
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ctx, cancel := context.WithCancel(context.Background())
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s.cancelFn = cancel
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go func() {
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ticker := time.NewTicker(currencyFormatUpdateInterval)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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s.walletFeed.Send(walletevent.Event{
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Type: EventCurrencyTickUpdateFormat,
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})
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}
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}
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}()
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}
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func (s *Service) Stop() {
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if s.cancelFn != nil {
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s.cancelFn()
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}
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}
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func (s *Service) GetCachedCurrencyFormats() (FormatPerSymbol, error) {
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return s.db.GetCachedFormats()
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}
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func (s *Service) FetchAllCurrencyFormats() (FormatPerSymbol, error) {
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// Only token prices can change, so we fetch those
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tokenFormats, err := s.fetchAllTokenCurrencyFormats()
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if err != nil {
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return nil, err
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}
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err = s.db.UpdateCachedFormats(tokenFormats)
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if err != nil {
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return nil, err
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}
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return s.GetCachedCurrencyFormats()
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}
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func (s *Service) getAllFiatCurrencyFormats() (FormatPerSymbol, error) {
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return GetFiatCurrencyFormats(GetAllFiatCurrencySymbols())
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}
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func (s *Service) fetchAllTokenCurrencyFormats() (FormatPerSymbol, error) {
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tokens, err := s.tokenManager.GetAllTokens()
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if err != nil {
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return nil, err
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}
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tokenPerSymbolMap := make(map[string]bool)
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tokenSymbols := make([]string, 0)
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for _, t := range tokens {
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symbol := t.Symbol
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if !tokenPerSymbolMap[symbol] {
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tokenPerSymbolMap[symbol] = true
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tokenSymbols = append(tokenSymbols, symbol)
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}
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}
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tokenFormats, err := s.currency.FetchTokenCurrencyFormats(tokenSymbols)
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if err != nil {
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return nil, err
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}
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gweiSymbol := "Gwei"
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tokenFormats[gweiSymbol] = Format{
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Symbol: gweiSymbol,
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DisplayDecimals: 9,
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StripTrailingZeroes: true,
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}
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return tokenFormats, err
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}
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