proof generation

cspell.json

@@ -7,6 +7,7 @@
     "aarch",
     "clippy",
     "foundryup",
+    "merkle",
     "ruint",
     "Uniffi",
     "WalletKit",

walletkit-core/Cargo.toml

@@ -23,13 +23,17 @@ name = "walletkit_core"
 [dependencies]
 alloy-core = { version = "0.8.12", default-features = false, features = ["sol-types"] }
 hex = "0.4.3"
+reqwest = { version = "0.12.9", features = ["json", "brotli"] }
 ruint = { version = "1.12.3", default-features = false, features = ["alloc"] }
 semaphore = { git = "https://github.com/worldcoin/semaphore-rs", rev = "f266248", features = ["depth_30"] }
+serde = "1.0.215"
 serde_json = "1.0.133"
 strum = { version = "0.26", features = ["derive"] }
 thiserror = "2.0.3"
 uniffi = { workspace = true, features = ["build"] }
 
 [dev-dependencies]
 alloy = { version = "0.6.4", default-features = false, features = ["json", "contract", "node-bindings"] }
+mockito = "1.6.1"
+regex = "1.11.1"
 tokio = "1.41.1"

walletkit-core/src/credential_type.rs

@@ -1,5 +1,7 @@
 use strum::EnumString;
 
+use crate::Environment;
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq, uniffi::Object, EnumString, Hash)]
 #[strum(serialize_all = "snake_case")]
 pub enum CredentialType {
@@ -28,4 +30,34 @@ impl CredentialType {
             Self::SecurePassport => b"secure_passport",
         }
     }
+
+    /// Returns the host name for the relevant sign up sequencer to use. The sign up sequencer is used to fetch Merkle inclusion proofs.
+    ///
+    /// [Reference](https://github.com/worldcoin/signup-sequencer)
+    ///
+    /// # Future
+    /// - Support custom sign up sequencer hosts
+    #[must_use]
+    pub const fn get_sign_up_sequencer_host(&self, environment: &Environment) -> &str {
+        match environment {
+            Environment::Production => match self {
+                Self::Orb => "https://signup-orb-ethereum.stage-crypto.worldcoin.org",
+                Self::Device => {
+                    "https://signup-phone-ethereum.stage-crypto.worldcoin.org"
+                }
+                Self::Passport => "https://signup-document.stage-crypto.worldcoin.org",
+                Self::SecurePassport => {
+                    "https://signup-document-secure.stage-crypto.worldcoin.org"
+                }
+            },
+            Environment::Staging => match self {
+                Self::Orb => "https://signup-orb-ethereum.crypto.worldcoin.org",
+                Self::Device => "https://signup-phone-ethereum.crypto.worldcoin.org",
+                Self::Passport => "https://signup-document.crypto.worldcoin.org",
+                Self::SecurePassport => {
+                    "https://signup-document-secure.crypto.worldcoin.org"
+                }
+            },
+        }
+    }
 }