feat(contract): add get_config getter (closes #173)

PROGRESS.md

@@ -319,3 +319,14 @@ is closed — see [CONTRIBUTING.md](CONTRIBUTING.md).
 - **By:** ALLEN-AYODEJI
 - **Closes:** N/A
 - **Status:** Merged.
+
+### deprader_router contract — `get_config` getter
+
+- **What:** Added `Config` struct (`review_window_secs`, `max_bounty_duration_secs`,
+  `max_claims_per_bounty`, `max_ref_len`) and `get_config() -> Config` returning
+  the router's configured limits, so off-chain clients do not hard-code them.
+  Added `test_get_config_matches_constants`.
+- **By:** kevindurant735rocket-creator
+- **Closes:** #173
+- **Status:** `cargo fmt`, `cargo clippy -- -D warnings`, and
+  `cargo test --workspace` (22 tests) pass.

contracts/deprader_router/src/lib.rs

@@ -81,6 +81,15 @@ pub struct Claim {
     pub status: ClaimStatus,
 }
 
+#[contracttype]
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub struct Config {
+    pub review_window_secs: u64,
+    pub max_bounty_duration_secs: u64,
+    pub max_claims_per_bounty: u32,
+    pub max_ref_len: u32,
+}
+
 #[contracttype]
 enum DataKey {
     Admin,
@@ -173,6 +182,17 @@ impl DepRaderRouter {
         env.storage().instance().get(&DataKey::PendingAdmin)
     }
 
+    /// Returns the router's configured limits so off-chain clients do not
+    /// need to hard-code them.
+    pub fn get_config(_env: Env) -> Config {
+        Config {
+            review_window_secs: REVIEW_WINDOW_SECS,
+            max_bounty_duration_secs: MAX_BOUNTY_DURATION_SECS,
+            max_claims_per_bounty: MAX_CLAIMS_PER_BOUNTY,
+            max_ref_len: MAX_REF_LEN,
+        }
+    }
+
     // ------------------------------------------------------------- bounties
 
     /// Locks `amount` of `token` from `creator` against a new bounty and

contracts/deprader_router/src/test.rs

@@ -1,6 +1,6 @@
 use super::{
     BountyStatus, ClaimStatus, DepRaderRouter, DepRaderRouterClient, Error,
-    MAX_BOUNTY_DURATION_SECS, MAX_CLAIMS_PER_BOUNTY, REVIEW_WINDOW_SECS,
+    MAX_BOUNTY_DURATION_SECS, MAX_CLAIMS_PER_BOUNTY, MAX_REF_LEN, REVIEW_WINDOW_SECS,
 };
 use soroban_sdk::{
     symbol_short,
@@ -513,3 +513,13 @@ fn test_admin_rotation_is_two_step() {
     t.client.release(&bounty_id, &claim_id);
     assert_eq!(t.last_auth(), new_admin);
 }
+
+#[test]
+fn test_get_config_matches_constants() {
+    let t = setup();
+    let config = t.client.get_config();
+    assert_eq!(config.review_window_secs, REVIEW_WINDOW_SECS);
+    assert_eq!(config.max_bounty_duration_secs, MAX_BOUNTY_DURATION_SECS);
+    assert_eq!(config.max_claims_per_bounty, MAX_CLAIMS_PER_BOUNTY);
+    assert_eq!(config.max_ref_len, MAX_REF_LEN);
+}