From a8b95dc966790c6c34eb48e8f6b35a32b05507fa Mon Sep 17 00:00:00 2001
From: Dr Maxim Orlovsky <orlovsky@lnp-bp.org>
Date: Sun, 15 Dec 2024 22:15:05 +0100
Subject: [PATCH] seals: add serde support

---
 Cargo.lock                  |  1 +
 single_use_seals/Cargo.toml |  3 ++-
 single_use_seals/src/lib.rs | 11 +++++++++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index 52c2b515..a278122c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -382,6 +382,7 @@ dependencies = [
 name = "single_use_seals"
 version = "0.12.0-beta.1"
 dependencies = [
+ "serde",
  "strict_encoding",
 ]
 
diff --git a/single_use_seals/Cargo.toml b/single_use_seals/Cargo.toml
index 364bc9e7..bd6be1b5 100644
--- a/single_use_seals/Cargo.toml
+++ b/single_use_seals/Cargo.toml
@@ -18,10 +18,11 @@ path = "src/lib.rs"
 
 [dependencies]
 strict_encoding = { workspace = true, optional = true }
+serde = { workspace = true, optional = true }
 
 [features]
 default = []
-all = ["strict_encoding"]
+all = ["strict_encoding", "serde"]
 
 [package.metadata.docs.rs]
 features = ["all"]
diff --git a/single_use_seals/src/lib.rs b/single_use_seals/src/lib.rs
index b99e0b60..5615c59e 100644
--- a/single_use_seals/src/lib.rs
+++ b/single_use_seals/src/lib.rs
@@ -107,6 +107,10 @@
 #[macro_use]
 extern crate strict_encoding;
 
+#[cfg(feature = "serde")]
+#[macro_use]
+extern crate serde;
+
 use core::borrow::Borrow;
 use core::convert::Infallible;
 use core::error::Error;
@@ -202,11 +206,18 @@ pub trait PublishedWitness<Seal: SingleUseSeal> {
     derive(StrictType, StrictDumb, StrictEncode, StrictDecode),
     strict_type(lib = "SingleUseSeals")
 )]
+#[cfg_attr(
+    feature = "serde",
+    derive(Serialize, Deserialize),
+    serde(bound = "Seal::PubWitness: serde::Serialize + for<'d> serde::Deserialize<'d>, \
+                   Seal::CliWitness: serde::Serialize + for<'d> serde::Deserialize<'d>")
+)]
 pub struct SealWitness<Seal>
 where Seal: SingleUseSeal
 {
     pub published: Seal::PubWitness,
     pub client: Seal::CliWitness,
+    #[cfg_attr(feature = "serde", serde(skip))]
     #[cfg_attr(feature = "strict_encoding", strict_type(skip))]
     _phantom: PhantomData<Seal>,
 }