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package main
import (
"encoding/json"
"io/ioutil"
"log"
"net/http"
"net/url"
"strings"
"github.com/slack-go/slack"
)
var api = slack.New("YOUR_TOKEN")
var signingSecret = "YOUR_SIGNING_SECRET"
// You can open a dialog with a user interaction. (like pushing buttons, slash commands ...)
// https://api.slack.com/surfaces/modals
// https://api.slack.com/interactivity/entry-points
func main() {
http.HandleFunc("/", handler)
http.ListenAndServe(":3000", nil)
}
func handler(w http.ResponseWriter, r *http.Request) {
// Read request body
defer r.Body.Close()
body, err := ioutil.ReadAll(r.Body)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
log.Printf("[ERROR] Fail to read request body: %v", err)
return
}
// Verify signing secret
sv, err := slack.NewSecretsVerifier(r.Header, signingSecret)
if err != nil {
w.WriteHeader(http.StatusUnauthorized)
log.Printf("[ERROR] Fail to verify SigningSecret: %v", err)
return
}
sv.Write(body)
if err := sv.Ensure(); err != nil {
w.WriteHeader(http.StatusUnauthorized)
log.Printf("[ERROR] Fail to verify SigningSecret: %v", err)
return
}
// Parse request body
str, _ := url.QueryUnescape(string(body))
str = strings.Replace(str, "payload=", "", 1)
var message slack.InteractionCallback
if err := json.Unmarshal([]byte(str), &message); err != nil {
log.Printf("[ERROR] Fail to unmarshal json: %v", err)
return
}
switch message.Type {
case slack.InteractionTypeInteractionMessage:
// Make new dialog components and open a dialog.
// Component-Text
textInput := slack.NewTextInput("TextSample", "Sample label - Text", "Default value")
// Component-TextArea
textareaInput := slack.NewTextAreaInput("TexaAreaSample", "Sample label - TextArea", "Default value")
// Component-Select menu
option1 := slack.DialogSelectOption{
Label: "Display name 1",
Value: "Inner value 1",
}
option2 := slack.DialogSelectOption{
Label: "Display name 2",
Value: "Inner value 2",
}
options := []slack.DialogSelectOption{option1, option2}
selectInput := slack.NewStaticSelectDialogInput("SelectSample", "Sample label - Select", options)
// Open a dialog
elements := []slack.DialogElement{
textInput,
textareaInput,
selectInput,
}
dialog := slack.Dialog{
CallbackID: "Callback_ID",
Title: "Dialog title",
SubmitLabel: "Submit",
Elements: elements,
}
api.OpenDialog(message.TriggerID, dialog)
case slack.InteractionTypeDialogSubmission:
// Receive a notification of a dialog submission
log.Printf("Successfully receive a dialog submission.")
}
}
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