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callback_writer.go
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callback_writer.go
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package event_listener
import (
"syscall/js"
"github.com/erbaner/be-core/pkg/utils"
)
type CallbackWriter interface {
SendMessage()
SetEvent(event string) CallbackWriter
SetData(data interface{}) CallbackWriter
SetErrCode(errCode int32) CallbackWriter
SetOperationID(operationID string) CallbackWriter
SetErrMsg(errMsg string) CallbackWriter
GetOperationID() string
HandlerFunc(fn FuncLogic) interface{}
}
type EventData struct {
Event string `json:"event"`
ErrCode int32 `json:"errCode"`
ErrMsg string `json:"errMsg"`
Data interface{} `json:"data,omitempty"`
OperationID string `json:"operationID"`
callback *js.Value
}
func (e *EventData) HandlerFunc(fn FuncLogic) interface{} {
panic("implement me")
}
func (e *EventData) GetOperationID() string {
return e.OperationID
}
func NewEventData(callback *js.Value) *EventData {
return &EventData{callback: callback}
}
func (e *EventData) SendMessage() {
e.callback.Invoke(utils.StructToJsonString(e))
}
func (e *EventData) SetEvent(event string) CallbackWriter {
e.Event = event
return e
}
func (e *EventData) SetData(data interface{}) CallbackWriter {
e.Data = data
return e
}
func (e *EventData) SetErrCode(errCode int32) CallbackWriter {
e.ErrCode = errCode
return e
}
func (e *EventData) SetOperationID(operationID string) CallbackWriter {
e.OperationID = operationID
return e
}
func (e *EventData) SetErrMsg(errMsg string) CallbackWriter {
e.ErrMsg = errMsg
return e
}
var (
jsErr = js.Global().Get("Error")
jsPromise = js.Global().Get("Promise")
)
type PromiseHandler struct {
Event string `json:"event"`
ErrCode int32 `json:"errCode"`
ErrMsg string `json:"errMsg"`
Data interface{} `json:"data,omitempty"`
OperationID string `json:"operationID"`
resolve *js.Value
reject *js.Value
}
func NewPromiseHandler() *PromiseHandler {
return &PromiseHandler{}
}
func (p *PromiseHandler) HandlerFunc(fn FuncLogic) interface{} {
handler := js.FuncOf(func(_ js.Value, promFn []js.Value) interface{} {
p.resolve, p.reject = &promFn[0], &promFn[1]
fn()
return nil
})
return jsPromise.New(handler)
}
func (p *PromiseHandler) GetOperationID() string {
return p.OperationID
}
func (p *PromiseHandler) SendMessage() {
if p.Data != nil {
p.resolve.Invoke(p.Data)
} else {
//p.reject.Invoke(jsErr.New(fmt.Sprintf("erCode:%d,errMsg:%s,operationID:%s", p.ErrCode, p.ErrMsg, p.OperationID)))
errInfo := make(map[string]interface{})
errInfo["errCode"] = p.ErrCode
errInfo["errMsg"] = p.ErrMsg
errInfo["operationID"] = p.OperationID
p.reject.Invoke(errInfo)
}
}
func (p *PromiseHandler) SetEvent(event string) CallbackWriter {
p.Event = event
return p
}
func (p *PromiseHandler) SetData(data interface{}) CallbackWriter {
p.Data = data
return p
}
func (p *PromiseHandler) SetErrCode(errCode int32) CallbackWriter {
p.ErrCode = errCode
return p
}
func (p *PromiseHandler) SetOperationID(operationID string) CallbackWriter {
p.OperationID = operationID
return p
}
func (p *PromiseHandler) SetErrMsg(errMsg string) CallbackWriter {
p.ErrMsg = errMsg
return p
}