support for responding with dtmf or an audio file to both sip call types

internal/processor/sip-response-dtmf-create.go

@@ -0,0 +1,97 @@
+package processor
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"text/template"
+
+	"github.com/jwetzell/showbridge-go/internal/config"
+)
+
+type SipResponseDTMFCreate struct {
+	config   config.ProcessorConfig
+	PreWait  int
+	PostWait int
+	Digits   *template.Template
+}
+
+type SipDTMFResponse struct {
+	PreWait  int
+	PostWait int
+	Digits   string
+}
+
+func (scc *SipResponseDTMFCreate) Process(ctx context.Context, payload any) (any, error) {
+
+	var digitsBuffer bytes.Buffer
+	err := scc.Digits.Execute(&digitsBuffer, payload)
+
+	if err != nil {
+		return nil, err
+	}
+
+	digitsString := digitsBuffer.String()
+
+	return SipDTMFResponse{
+		PreWait:  scc.PreWait,
+		PostWait: scc.PostWait,
+		Digits:   digitsString,
+	}, nil
+}
+
+func (scc *SipResponseDTMFCreate) Type() string {
+	return scc.config.Type
+}
+
+func init() {
+	RegisterProcessor(ProcessorRegistration{
+		Type: "sip.response.dtmf.create",
+		New: func(config config.ProcessorConfig) (Processor, error) {
+			params := config.Params
+
+			preWait, ok := params["preWait"]
+
+			if !ok {
+				return nil, errors.New("sip.response.dtmf.create requires a preWait parameter")
+			}
+
+			preWaitNum, ok := preWait.(float64)
+
+			if !ok {
+				return nil, errors.New("sip.response.dtmf.create preWait must be a number")
+			}
+
+			postWait, ok := params["postWait"]
+
+			if !ok {
+				return nil, errors.New("sip.response.dtmf.create requires a postWait parameter")
+			}
+
+			postWaitNum, ok := postWait.(float64)
+
+			if !ok {
+				return nil, errors.New("sip.response.dtmf.create postWait must be a number")
+			}
+
+			digits, ok := params["digits"]
+
+			if !ok {
+				return nil, errors.New("sip.response.dtmf.create requires a digits parameter")
+			}
+
+			digitsString, ok := digits.(string)
+
+			if !ok {
+				return nil, errors.New("sip.response.dtmf.create digits must be a string")
+			}
+
+			digitsTemplate, err := template.New("digits").Parse(digitsString)
+
+			if err != nil {
+				return nil, err
+			}
+			return &SipResponseDTMFCreate{config: config, Digits: digitsTemplate, PreWait: int(preWaitNum), PostWait: int(postWaitNum)}, nil
+		},
+	})
+}