cleanup

program/src/deposit.rs

@@ -0,0 +1,67 @@
+use ore_api::prelude::*;
+use steel::*;
+
+/// Deposits collateral.
+pub fn process_deposit(accounts: &[AccountInfo<'_>], data: &[u8]) -> ProgramResult {
+    // Parse data.
+    let args = Deposit::try_from_bytes(data)?;
+    let amount = u64::from_le_bytes(args.amount);
+
+    // Load accounts.
+    let clock = Clock::get()?;
+    let [signer_info, block_info, collateral_info, mint_ore_info, sender_info, stake_info, system_program, token_program] =
+        accounts
+    else {
+        return Err(ProgramError::NotEnoughAccountKeys);
+    };
+    signer_info.is_signer()?;
+    let block = block_info
+        .as_account_mut::<Block>(&ore_api::ID)?
+        .assert_mut(|b| clock.slot < b.start_slot)?;
+    collateral_info
+        .is_writable()?
+        .as_associated_token_account(block_info.key, mint_ore_info.key)?;
+    mint_ore_info.has_address(&MINT_ADDRESS)?.as_mint()?;
+    sender_info
+        .is_writable()?
+        .as_associated_token_account(signer_info.key, &mint_ore_info.key)?
+        .assert(|t| t.amount() >= amount)?;
+    system_program.is_program(&system_program::ID)?;
+    token_program.is_program(&spl_token::ID)?;
+
+    // Load stake account.
+    let stake = if stake_info.data_is_empty() {
+        create_program_account::<Stake>(
+            stake_info,
+            system_program,
+            signer_info,
+            &ore_api::ID,
+            &[STAKE, &signer_info.key.to_bytes(), &block.id.to_le_bytes()],
+        )?;
+        let stake = stake_info.as_account_mut::<Stake>(&ore_api::ID)?;
+        stake.authority = *signer_info.key;
+        stake.block_id = block.id;
+        stake.capacity = 0;
+        stake.utilization = 0;
+        stake
+    } else {
+        stake_info
+            .as_account_mut::<Stake>(&ore_api::ID)?
+            .assert_mut(|p| p.authority == *signer_info.key)?
+            .assert_mut(|p| p.block_id == block.id)?
+    };
+
+    // Update stake state.
+    stake.capacity += amount;
+
+    // Transfer collateral.
+    transfer(
+        sender_info,
+        signer_info,
+        collateral_info,
+        token_program,
+        amount,
+    )?;
+
+    Ok(())
+}