chore(dpp): add method for decoding identifier with unknown string en…

…coding (#2230)

packages/rs-platform-value/src/string_encoding.rs

@@ -3,13 +3,27 @@ use base64;
 use base64::prelude::BASE64_STANDARD;
 use base64::Engine;
 use bs58;
+use std::fmt;
 
+#[derive(Debug, Copy, Clone)]
 pub enum Encoding {
     Base58,
     Base64,
     Hex,
 }
 
+pub const ALL_ENCODINGS: [Encoding; 3] = [Encoding::Hex, Encoding::Base58, Encoding::Base64];
+
+impl fmt::Display for Encoding {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Encoding::Base58 => write!(f, "Base58"),
+            Encoding::Base64 => write!(f, "Base64"),
+            Encoding::Hex => write!(f, "Hex"),
+        }
+    }
+}
+
 pub fn decode(encoded_value: &str, encoding: Encoding) -> Result<Vec<u8>, Error> {
     match encoding {
         Encoding::Base58 => Ok(bs58::decode(encoded_value)

packages/rs-platform-value/src/types/identifier.rs

@@ -11,7 +11,8 @@ use serde::{Deserialize, Serialize};
 #[cfg(feature = "json")]
 use serde_json::Value as JsonValue;
 
-use crate::string_encoding::Encoding;
+use crate::string_encoding::Encoding::Base58;
+use crate::string_encoding::{Encoding, ALL_ENCODINGS};
 use crate::types::encoding_string_to_encoding;
 use crate::{string_encoding, Error, Value};
 
@@ -170,6 +171,29 @@ impl Identifier {
         Identifier::from_bytes(&vec)
     }
 
+    pub fn from_string_try_encodings(
+        encoded_value: &str,
+        encodings: &[Encoding],
+    ) -> Result<Identifier, Error> {
+        let mut tried = vec![];
+        for encoding in encodings {
+            if let Ok(vec) = string_encoding::decode(encoded_value, *encoding) {
+                if vec.len() == 32 {
+                    return Identifier::from_bytes(&vec);
+                }
+            }
+            tried.push(encoding.to_string());
+        }
+        Err(Error::StringDecodingError(format!(
+            "Failed to decode string with encodings [{}]",
+            tried.join(", ")
+        )))
+    }
+
+    pub fn from_string_unknown_encoding(encoded_value: &str) -> Result<Identifier, Error> {
+        Identifier::from_string_try_encodings(encoded_value, &ALL_ENCODINGS)
+    }
+
     pub fn from_string_with_encoding_string(
         encoded_value: &str,
         encoding_string: Option<&str>,