implement setting initial values for coins

substrate/genesis-liquidity/primitives/src/lib.rs

@@ -2,7 +2,21 @@
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
 #![cfg_attr(not(feature = "std"), no_std)]
 
+#[cfg(feature = "std")]
+use zeroize::Zeroize;
+
+#[cfg(feature = "borsh")]
+use borsh::{BorshSerialize, BorshDeserialize};
+#[cfg(feature = "serde")]
+use serde::{Serialize, Deserialize};
+
+use sp_std::vec::Vec;
+
+use scale::{Encode, Decode, MaxEncodedLen};
+use scale_info::TypeInfo;
+
 use serai_primitives::*;
+use validator_sets_primitives::ValidatorSet;
 
 // amount of blocks in 30 days for 6s per block.
 pub const BLOCKS_PER_MONTH: u32 = 10 * 60 * 24 * 30;
@@ -15,3 +29,19 @@ pub const GENESIS_SRI: u64 = 100_000_000 * 10_u64.pow(8);
 
 // This is the account to hold and manage the genesis liquidity.
 pub const GENESIS_LIQUIDITY_ACCOUNT: SeraiAddress = system_address(b"Genesis-liquidity-account");
+
+#[derive(Clone, PartialEq, Eq, Debug, Encode, Decode, MaxEncodedLen, TypeInfo)]
+#[cfg_attr(feature = "std", derive(Zeroize))]
+#[cfg_attr(feature = "borsh", derive(BorshSerialize, BorshDeserialize))]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+pub struct Prices {
+  pub bitcoin: u64,
+  pub monero: u64,
+  pub ethereum: u64,
+  pub dai: u64,
+}
+
+/// The message for the set_initial_price signature.
+pub fn set_initial_price_message(set: &ValidatorSet, prices: &Prices) -> Vec<u8> {
+  (b"GenesisLiquidity-set_initial_price", set, prices).encode()
+}