Gists Linked to the DialogFlow article https://blog.depado.eu/post/dialogflow-golang-webhook

1-main.go

func webhook(c *gin.Context) {
    c.JSON(http.StatusOK, gin.H{})
}

func main() {
	r := gin.Default()
	r.POST("/webhook", webhook)
	if err := r.Run("127.0.0.1:8001"); err != nil {
		panic(err)
	}
}

10-main.go

out := fmt.Sprintf("I found that cocktail : %s", d.StrDrink)
dff := &df.Fulfillment{
	FulfillmentMessages: df.Messages{
		{RichMessage: df.Text{Text: []string{out}}},
		df.ForGoogle(cardFromDrink(d)),
	},
}
c.JSON(http.StatusOK, dff)

11-main.go

type searchParams struct {
	Alcohol   string `json:"alcohol"`
	DrinkType string `json:"drink-type"`
	Name      string `json:"name"`
}

func search(c *gin.Context, dfr *df.Request) {
	var err error
	var p searchParams

	if err = dfr.GetParams(&p); err != nil {
		logrus.WithError(err).Error("Couldn't get parameters")
		c.AbortWithStatus(http.StatusBadRequest)
		return
	}

	spew.Dump(p)

	c.JSON(http.StatusOK, gin.H{})
}

12-main.go

func specify(c *gin.Context, dfr *df.Request) {
	var err error
	var p searchParams

	if err = dfr.GetContext("Search-followup", &p); err != nil {
		logrus.WithError(err).Error("Couldn't get parameters")
		c.AbortWithStatus(http.StatusBadRequest)
		return
	}

	spew.Dump(p)

	c.JSON(http.StatusOK, gin.H{})
}

2-main.go

func webhook(c *gin.Context) {
	var err error
	var dfr *df.Request

	if err = c.BindJSON(&dfr); err != nil {
		c.AbortWithStatus(http.StatusBadRequest)
		return
    }

    spew.Dump(dfr)

    c.JSON(http.StatusOK, gin.H{})
}

3-main.go

func webhook(c *gin.Context) {
	var err error
	var dfr *df.Request

	if err = c.BindJSON(&dfr); err != nil {
		c.AbortWithStatus(http.StatusBadRequest)
		return
	}
	
	switch dfr.QueryResult.Action {
	case "search":
		log.Println("Search action detected")
		c.JSON(http.StatusOK, gin.H{})
	case "random":
		log.Println("Search action detected")
		c.JSON(http.StatusOK, gin.H{})
	default:
		log.Println("Unknown action")
		c.AbortWithStatus(http.StatusNotFound)
	}
}

4-main.go

func search(c *gin.Context, dfr *df.Request) {

}

func random(c *gin.Context, dfr *df.Request) {

}

5-main.go

func random(c *gin.Context, dfr *df.Request) {
	var err error
	var d *cocktail.FullDrink

	if d, err = cocktail.C.GetRandomDrink(); err != nil {
		logrus.WithError(err).Error("Coudln't get random drink")
		c.AbortWithStatus(http.StatusInternalServerError)
		return
	}
	fmt.Println(d)
	c.JSON(http.StatusOK, gin.H{})
}

6-main.go

out := fmt.Sprintf("I found that cocktail : %s", d.StrDrink)
dff := &df.Fulfillment{
	FulfillmentMessages: df.Messages{
		{RichMessage: df.Text{Text: []string{out}}},
		df.ForGoogle(df.SingleSimpleResponse(out, out)),
	},
}
c.JSON(http.StatusOK, dff)

7-main.go

// Message is a struct holding a platform and a RichMessage.
// Used in the FulfillmentMessages of the response sent back to dialogflow
type Message struct {
	Platform
	RichMessage RichMessage
}

8-main.go

// Platform is a simple type intended to be used with responses
type Platform string

// Platform constants, used in the webhook responses
const (
	Unspecified     Platform = "PLATFORM_UNSPECIFIED"
	Facebook        Platform = "FACEBOOK"
	Slack           Platform = "SLACK"
	Telegram        Platform = "TELEGRAM"
	Kik             Platform = "KIK"
	Skype           Platform = "SKYPE"
	Line            Platform = "LINE"
	Viber           Platform = "VIBER"
	ActionsOnGoogle Platform = "ACTIONS_ON_GOOGLE"
)

9-main.go

func cardFromDrink(d *cocktail.FullDrink) df.BasicCard {
	card := df.BasicCard{
		Title:         d.StrDrink,
		FormattedText: d.StrInstructions,
		Image: &df.Image{
			ImageURI: d.StrDrinkThumb,
		},
	}
	return card
}