From 66ac55f158f7835ece70fe4bae98a3cb176a0f22 Mon Sep 17 00:00:00 2001
From: Tsachi Herman <tsachi@Tsachis-MacBook-Pro.local>
Date: Wed, 10 Jan 2024 16:58:42 -0500
Subject: [PATCH] stage

---
 xps-gateway/src/rpc/api.rs     | 11 ++++++++++-
 xps-gateway/src/rpc/methods.rs | 21 ++++++++++++++++++++-
 xps-gateway/src/types.rs       | 23 +++++++++++++++++++++++
 3 files changed, 53 insertions(+), 2 deletions(-)

diff --git a/xps-gateway/src/rpc/api.rs b/xps-gateway/src/rpc/api.rs
index c1ec944..0797193 100644
--- a/xps-gateway/src/rpc/api.rs
+++ b/xps-gateway/src/rpc/api.rs
@@ -2,7 +2,7 @@
 
 use jsonrpsee::{proc_macros::rpc, types::ErrorObjectOwned};
 
-use crate::types::Message;
+use crate::types::{GrantInstallationResult, Message, Signature};
 
 /// XPS JSON-RPC Interface Methods
 #[rpc(server, client, namespace = "xps")]
@@ -10,4 +10,13 @@ pub trait Xps {
     // Placeholder for send_message, see [the discussion](https://github.com/xmtp/xps-gateway/discussions/11)
     #[method(name = "sendMessage")]
     async fn send_message(&self, _message: Message) -> Result<(), ErrorObjectOwned>;
+
+    #[method(name = "grantInstallation")]
+    async fn grant_installation(
+        &self,
+        did: String,
+        name: String,
+        value: String,
+        signature: Signature,
+    ) -> Result<GrantInstallationResult, ErrorObjectOwned>;
 }
diff --git a/xps-gateway/src/rpc/methods.rs b/xps-gateway/src/rpc/methods.rs
index 6dc1556..eb6d732 100644
--- a/xps-gateway/src/rpc/methods.rs
+++ b/xps-gateway/src/rpc/methods.rs
@@ -5,7 +5,7 @@ use super::api::*;
 use async_trait::async_trait;
 use jsonrpsee::types::ErrorObjectOwned;
 
-use crate::types::Message;
+use crate::types::{GrantInstallationResult, Message, Signature};
 
 /// Gateway Methods for XPS
 pub struct XpsMethods;
@@ -17,4 +17,23 @@ impl XpsServer for XpsMethods {
         log::debug!("xps_sendMessage called");
         todo!();
     }
+
+    async fn grant_installation(
+        &self,
+        _did: String,
+        _name: String,
+        _value: String,
+        _signature: Signature,
+    ) -> Result<GrantInstallationResult, ErrorObjectOwned> {
+        /*if name.len() > 32 {
+            Err(GrantInstallationResult {})
+        }*/
+
+        let result = GrantInstallationResult {
+            status: "my-status".to_string(),
+            message: "my message".to_string(),
+            transaction: "my transaction".to_string(),
+        };
+        Ok(result)
+    }
 }
diff --git a/xps-gateway/src/types.rs b/xps-gateway/src/types.rs
index c734427..cd689d9 100644
--- a/xps-gateway/src/types.rs
+++ b/xps-gateway/src/types.rs
@@ -15,3 +15,26 @@ pub struct Message {
     /// Signature of S
     s: Vec<u8>,
 }
+
+#[derive(Serialize, Deserialize)]
+pub struct Signature {
+    /// Signature of V
+    #[serde(rename = "V")]
+    v: i64,
+    /// Signature of R
+    #[serde(rename = "R")]
+    r: Vec<u8>,
+    /// Signature of S
+    #[serde(rename = "S")]
+    s: Vec<u8>,
+}
+
+#[derive(Serialize, Deserialize, Clone)]
+pub struct GrantInstallationResult {
+    #[serde(rename = "status")]
+    pub status: String,
+    #[serde(rename = "message")]
+    pub message: String,
+    #[serde(rename = "tx")]
+    pub transaction: String,
+}