// Create a new Object from Base64 JSON encoded data.
func NewFromBase64(context *context.Context, b64 string) (*Object, error) {
jsonBytes, err := base64.URLEncoding.DecodeString(fixPadding(b64))
if err != nil {
return nil, fmt.Errorf(
"Failed base64 decode of string \"%s\" with error: %s", b64, err)
}
var strSlices [][]interface{}
err = json.Unmarshal(jsonBytes, &strSlices)
if err != nil {
return nil, fmt.Errorf(
"Failed json unmarshal string %s with error %s", string(jsonBytes), err)
}
object := &Object{context: context}
for _, row := range strSlices {
if len(row) != 2 {
return nil, fmt.Errorf("Got more than two elements in pair: %v", row)
}
if row[0] == nil {
return nil, fmt.Errorf("First element in pair is null: %v", row)
}
key := fmt.Sprint(row[0])
val := ""
switch t := row[1].(type) {
case nil:
object.skipGenerate = append(object.skipGenerate, key)
continue
case float64:
val = fmt.Sprint(uint64(t))
default:
val = fmt.Sprint(t)
}
object.AddPair(key, val)
}
if object.shouldGenerate("og:url") {
url := context.AbsoluteURL("/rog/" + b64).String()
object.AddPair("og:url", url)
}
err = object.generateDefaults()
if err != nil {
return nil, err
}
return object, nil
}
// Create a new Object from query string data.
func NewFromValues(context *context.Context, values url.Values) (*Object, error) {
object := &Object{context: context}
for key, values := range values {
if strings.Contains(key, ":") {
for _, value := range values {
object.AddPair(key, value)
}
}
}
if object.shouldGenerate("og:url") {
copiedValues := copyValues(values)
copiedValues.Del("og:type")
copiedValues.Del("og:title")
url := url.URL{
Scheme: context.Scheme,
Host: context.Host,
Path: "/og/" + object.Type() + "/" + object.Title(),
RawQuery: sortedEncode(copiedValues),
}
object.AddPair("og:url", url.String())
}
ogType := object.Type()
isGlobalOGType := !strings.Contains(ogType, ":")
isOwnedOGType := strings.HasPrefix(ogType, context.AppNamespace()+":")
if object.shouldGenerate("fb:app_id") && (isGlobalOGType || isOwnedOGType) {
object.AddPair("fb:app_id", strconv.FormatUint(context.AppID, 10))
}
err := object.generateDefaults()
if err != nil {
return nil, err
}
return object, nil
}
func redirectURI(c *context.Context) string {
return c.AbsoluteURL(Path + resp).String()
}
