Add MessageEventResponse (#10)

Reviewed-on: phoenix/textsender-models#10
Co-authored-by: phoenix <kundeng00@pm.me>
Co-committed-by: phoenix <kundeng00@pm.me>

tx0/message/message_event_response.go

@@ -0,0 +1,17 @@
+package message
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+
+	"git.kundeng.us/phoenix/textsender-models/tx0/types"
+)
+
+type MessageEventResponse struct {
+	Id                      uuid.UUID   `json:"id,omitempty"`
+	ScheduledMessageEventId uuid.UUID   `json:"scheduled_message_event_id,omitempty"`
+	Response                types.JSONB `json:"response"`
+	UserId                  uuid.UUID   `json:"user_id,omitempty"`
+	Sent                    time.Time   `json:"sent"`
+}

tx0/types/jsonb.go

@@ -0,0 +1,41 @@
+package types
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"fmt"
+)
+
+type JSONB json.RawMessage
+
+// Scan implements sql.Scanner
+func (j *JSONB) Scan(value interface{}) error {
+	if value == nil {
+		*j = nil
+		return nil
+	}
+
+	var data []byte
+	switch v := value.(type) {
+	case []byte:
+		// pgx may pass data as []byte in binary format
+		data = v
+	case string:
+		// pgx may pass data as string in text format
+		data = []byte(v)
+	default:
+		return fmt.Errorf("unsupported type: %T", v)
+	}
+
+	*j = JSONB(data)
+	return nil
+}
+
+// Value implements driver.Valuer
+func (j JSONB) Value() (driver.Value, error) {
+	if j == nil {
+		return nil, nil
+	} else {
+		return []byte(j), nil
+	}
+}