From 638d31ba289ecc757ac3201ceba92122da863473 Mon Sep 17 00:00:00 2001
From: Uncle Stinky <uncle.stinky@ghostchain.io>
Date: Thu, 27 Nov 2025 19:07:59 +0300
Subject: [PATCH] update casper runtime based on ghost pallets

Signed-off-by: Uncle Stinky <uncle.stinky@ghostchain.io>
---
 runtime/casper/Cargo.toml                    |  1 +
 runtime/casper/src/impls.rs                  | 32 ++++++++++++++++++++
 runtime/casper/src/lib.rs                    |  4 +--
 runtime/casper/src/weights/ghost_networks.rs | 12 ++++++++
 4 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/runtime/casper/Cargo.toml b/runtime/casper/Cargo.toml
index bf9c70b..1ce0dc4 100644
--- a/runtime/casper/Cargo.toml
+++ b/runtime/casper/Cargo.toml
@@ -88,6 +88,7 @@ ghost-networks = { workspace = true }
 ghost-claims = { workspace = true }
 ghost-slow-clap = { workspace = true }
 ghost-sudo = { workspace = true }
+ghost-traits = { workspace = true }
 casper-runtime-constants = { workspace = true }
 runtime-common = { workspace = true }
 primitives = { workspace = true }
diff --git a/runtime/casper/src/impls.rs b/runtime/casper/src/impls.rs
index c3ed55d..f2f3e8e 100644
--- a/runtime/casper/src/impls.rs
+++ b/runtime/casper/src/impls.rs
@@ -1,6 +1,8 @@
 use super::*;
 use frame_support::{dispatch::DispatchResultWithPostInfo, traits::PrivilegeCmp};
+use ghost_traits::exposure::ExposureListener;
 use pallet_alliance::{ProposalIndex, ProposalProvider};
+use primitives::Balance;
 use sp_runtime::DispatchError;
 use sp_std::{cmp::Ordering, marker::PhantomData};
 
@@ -76,6 +78,36 @@ impl PrivilegeCmp<OriginCaller> for EqualOrGreatestRootCmp {
     }
 }
 
+/// Used to get the exposure information out of staking pallet directly.
+pub struct StakingExposureListener<T>(PhantomData<T>);
+impl<T> ExposureListener<Balance, AccountIdOf<T>> for StakingExposureListener<T>
+where
+    T: pallet_session::Config + pallet_staking::Config + frame_system::Config,
+    u128: From<T::CurrencyBalance>,
+    AccountIdOf<T>: From<<T as pallet_session::Config>::ValidatorId>,
+{
+    fn get_account_by_index(index: usize) -> Option<AccountIdOf<T>> {
+        pallet_session::Pallet::<T>::validators()
+            .get(index)
+            .map(|validator| {
+                let account_id: AccountIdOf<T> = validator.clone().into();
+                account_id
+            })
+    }
+
+    fn get_total_exposure() -> Balance {
+        let era = pallet_staking::Pallet::<T>::current_era().unwrap_or_default();
+        pallet_staking::Pallet::<T>::eras_total_stake(era).into()
+    }
+
+    fn get_validator_exposure(validator: &AccountIdOf<T>) -> Balance {
+        let era = pallet_staking::Pallet::<T>::current_era().unwrap_or_default();
+        pallet_staking::EraInfo::<T>::get_full_exposure(era, validator)
+            .total
+            .into()
+    }
+}
+
 #[cfg(feature = "runtime-benchmarks")]
 pub mod benchmarks {
     use super::*;
diff --git a/runtime/casper/src/lib.rs b/runtime/casper/src/lib.rs
index 5f3f590..9369293 100644
--- a/runtime/casper/src/lib.rs
+++ b/runtime/casper/src/lib.rs
@@ -78,7 +78,7 @@ mod genesis_config_presets;
 mod impls;
 mod weights;
 
-pub use impls::{AllianceProposalProvider, EqualOrGreatestRootCmp};
+pub use impls::{AllianceProposalProvider, EqualOrGreatestRootCmp, StakingExposureListener};
 
 // Governance configuration.
 pub mod cult;
@@ -1076,10 +1076,10 @@ impl ghost_slow_clap::Config for Runtime {
     type BlockNumberProvider = System;
     type ReportUnresponsiveness = Offences;
     type DisabledValidators = Session;
+    type ExposureListener = StakingExposureListener<Runtime>;
 
     type MaxAuthorities = MaxAuthorities;
     type ApplauseThreshold = ApplauseThreshold;
-    type OffenceThreshold = OffenceThreshold;
     type UnsignedPriority = SlowClapUnsignedPriority;
     type HistoryDepth = SlowClapHistoryDepth;
     type MinAuthoritiesNumber = MinAuthoritiesNumber;
diff --git a/runtime/casper/src/weights/ghost_networks.rs b/runtime/casper/src/weights/ghost_networks.rs
index 1bbc205..7f52e21 100644
--- a/runtime/casper/src/weights/ghost_networks.rs
+++ b/runtime/casper/src/weights/ghost_networks.rs
@@ -191,6 +191,18 @@ impl<T: frame_system::Config> ghost_networks::WeightInfo for WeightInfo<T> {
 	}
 	/// Storage: `GhostNetworks::Networks` (r:1 w:1)
 	/// Proof: `GhostNetworks::Networks` (`max_values`: None, `max_size`: None, mode: `Measured`)
+	fn update_avg_block_speed() -> Weight {
+		// Proof Size summary in bytes:
+		//  Measured:  `302`
+		//  Estimated: `3767`
+		// Minimum execution time: 49_579_000 picoseconds.
+		Weight::from_parts(51_126_000, 0)
+			.saturating_add(Weight::from_parts(0, 3767))
+			.saturating_add(T::DbWeight::get().reads(1))
+			.saturating_add(T::DbWeight::get().writes(1))
+	}
+	/// Storage: `GhostNetworks::Networks` (r:1 w:1)
+	/// Proof: `GhostNetworks::Networks` (`max_values`: None, `max_size`: None, mode: `Measured`)
 	fn remove_network() -> Weight {
 		// Proof Size summary in bytes:
 		//  Measured:  `302`