/
expirenza.go
174 lines (156 loc) · 4.33 KB
/
expirenza.go
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package expirenza
import (
"context"
"encoding/base64"
"encoding/json"
"fmt"
"net/http"
"sync"
"github.com/FairyTale5571/go-mono/internal/api"
"github.com/FairyTale5571/go-mono/internal/wss"
"github.com/gorilla/websocket"
)
type Expirenza struct {
clientMu *sync.RWMutex
wssClient *wss.WebsocketClient
apiClient *api.APIClient
debug bool
handlersMu *sync.RWMutex
handlers map[Operation][]*eventHandlerInstance
onceHandlers map[Operation][]*eventHandlerInstance
listener chan any
restoID string
secretKey string
}
type Settings struct {
RestoID string
SecretKey string
Debug bool
PosName string
Client *http.Client
WssClient *websocket.Dialer
}
// NewExpirenzaClient - Створення нового клієнта для Expirenza aka ShakeToPay API
func NewExpirenzaClient(settings Settings) *Expirenza {
if settings.Client == nil {
settings.Client = http.DefaultClient
}
if settings.WssClient == nil {
settings.WssClient = websocket.DefaultDialer
}
if settings.PosName == "" {
settings.PosName = "golang_sdk"
}
return &Expirenza{
wssClient: wss.NewWssClient(wss.Settings{
WssURL: "wss://api.shaketopay.com.ua/restaurantEntryPoint",
Dialer: settings.WssClient,
Headers: http.Header{
"Authorization": []string{"Basic " + base64.StdEncoding.EncodeToString([]byte(settings.RestoID+":"+settings.SecretKey))},
"cookie": []string{fmt.Sprintf("system=%s", settings.PosName)},
},
}),
apiClient: &api.APIClient{
Client: settings.Client,
BaseURL: "https://api.shaketopay.com.ua",
ErrorParserFunc: errorParser,
},
clientMu: &sync.RWMutex{},
handlersMu: &sync.RWMutex{},
handlers: make(map[Operation][]*eventHandlerInstance),
onceHandlers: make(map[Operation][]*eventHandlerInstance),
restoID: settings.RestoID,
secretKey: settings.SecretKey,
debug: settings.Debug,
}
}
// Open - Відкриття сесії
// При відкритті сесії відбувається підключення до WebSocket сервера
// та запуск прослуховування подій
func (e *Expirenza) Open(ctx context.Context) error {
if err := e.wssClient.Connect(ctx); err != nil {
return err
}
go func() {
e.listener = make(chan any)
e.listen()
}()
return nil
}
func (e *Expirenza) listen() {
e.log("start listening")
for {
messageType, message, err := e.wssClient.ReadMessage()
if err != nil {
// TODO: reconnect
return
}
select {
case <-e.listener:
return
default:
e.log("type: %d message: %v", messageType, string(message))
e.onEvent(messageType, message)
}
}
}
func (e *Expirenza) onEvent(_ int, message []byte) {
var msg map[string]interface{}
if err := json.Unmarshal(message, &msg); err != nil {
return
}
operationStr, ok := msg["operation"].(string)
if !ok {
return
}
operation := Operation(operationStr)
getOperationRequest := func() any {
var request any
switch operation {
case OperationGetBill:
request = &GetBillEvent{}
case OperationPayBill:
request = &PayBillRequest{}
case OperationCreateOrderOnTable:
request = &CreateOrderOnTableEvent{}
case OperationCheckProductsRestrictions:
request = &CheckProductsRestrictionsEvent{}
case OperationSplitOrder:
request = &SplitOrderEvent{}
case OperationTablesInfo:
request = &TablesInfoEvent{}
case OperationUsersInfo:
request = &UsersInfoEvent{}
case OperationCategoriesInfo:
request = &CategoriesInfoEvent{}
case OperationHallPlansInfo:
request = &HallPlansInfoEvent{}
case OperationCheckWork:
request = &CheckWorkEvent{}
case OperationSetSettings:
request = &SetSettingsEvent{}
case OperationStopList:
request = &StopListEvent{}
case OperationVersionInfo:
request = &VersionInfoEvent{}
case OperationMenuInfo:
request = &MenuInfoEvent{}
default:
return nil
}
e.log("catch event: %s", string(operation))
if err := json.Unmarshal(message, request); err != nil {
return nil
}
return request
}
e.handleEvent(operation, getOperationRequest())
}
// StopSession - Закриття підключення
func (e *Expirenza) StopSession() error {
return e.wssClient.Close()
}
// Ping - Перевірка доступності сервера
func (e *Expirenza) Ping() error {
return e.wssClient.SendMessage(fmt.Sprintf("Resto %s ping", e.restoID))
}