feat: support location messages

message/location.go

@@ -0,0 +1,34 @@
+package message
+
+// Location represents a WhatsApp location message.
+// See: https://developers.facebook.com/documentation/business-messaging/whatsapp/messages/location-messages/
+type Location struct {
+	Latitude  float64 `json:"latitude"`
+	Longitude float64 `json:"longitude"`
+	Name      *string `json:"name,omitempty"`
+	Address   *string `json:"address,omitempty"`
+}
+
+// NewLocationOpts for creating a new location message.
+type NewLocationOpts struct {
+	Latitude  float64
+	Longitude float64
+	Name      *string
+	Address   *string
+}
+
+// NewLocation creates a new WhatsApp location message.
+func NewLocation(to string, opts NewLocationOpts) Envelope {
+	return Envelope{
+		MessagingProduct: "whatsapp",
+		RecipientType:    "individual",
+		To:               to,
+		Type:             "location",
+		Location: &Location{
+			Latitude:  opts.Latitude,
+			Longitude: opts.Longitude,
+			Name:      opts.Name,
+			Address:   opts.Address,
+		},
+	}
+}

message/message.go

@@ -10,6 +10,7 @@ type Envelope struct {
 	Interactive      *Interactive     `json:"interactive,omitempty"`
 	Document         *Document        `json:"document,omitempty"`
 	Sticker          *Sticker         `json:"sticker,omitempty"`
+	Location         *Location        `json:"location,omitempty"`
 	Status           string           `json:"status,omitempty"`
 	TypingIndicator  *TypingIndicator `json:"typing_indicator,omitempty"`
 	MessageID        string           `json:"message_id,omitempty"`

webhook/webhook.go

@@ -44,6 +44,7 @@ type Message struct {
 	Context     *Context    `json:"context"`
 	Text        Text        `json:"text"`
 	Interactive Interactive `json:"interactive"`
+	Location    Location    `json:"location"`
 }
 
 type Text struct {
@@ -56,6 +57,13 @@ type Interactive struct {
 	ButtonReply *ButtonReply `json:"button_reply,omitempty"`
 }
 
+type Location struct {
+	Address   string `json:"address"`
+	Latitude  string `json:"latitude"`
+	Longitude string `json:"longitude"`
+	Name      string `json:"name"`
+}
+
 type NfmReply struct {
 	Name         string `json:"name"`
 	ResponseJson string `json:"response_json"`