Add basics/close-account/steel

basics/close-account/steel/Cargo.toml

@@ -0,0 +1,9 @@
+[workspace]
+members = ["api","program"]
+resolver = "2"
+
+[workspace.dependencies]
+solana-program = "1.18.17"
+steel = "2.0"
+bytemuck = "1.14"
+num_enum = "0.7"

basics/close-account/steel/api/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "close-account-steel-api"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+solana-program.workspace = true
+steel.workspace = true
+bytemuck.workspace = true
+num_enum.workspace = true
+
+[lib]
+crate-type = ["cdylib", "lib"]

basics/close-account/steel/api/src/instruction.rs

@@ -0,0 +1,76 @@
+use steel::*;
+
+use crate::state::User;
+
+/// Instuction Discriminators
+#[repr(u8)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, TryFromPrimitive)]
+pub enum SteelInstruction {
+    CreateUser = 0,
+    CloseUser = 1,
+}
+
+instruction!(SteelInstruction, CreateUser);
+/// Create User Instruction
+#[repr(C, packed)]
+#[derive(Clone, Copy, Debug, Pod, Zeroable)]
+pub struct CreateUser {
+    name: [u8; 48],
+}
+
+impl CreateUser {
+    pub fn process(
+        program_id: &Pubkey,
+        accounts: &[AccountInfo<'_>],
+        data: &[u8],
+    ) -> ProgramResult {
+        let args = Self::try_from_bytes(data)?;
+
+        let [user_info, payer, system_program] = accounts else {
+            return Err(ProgramError::NotEnoughAccountKeys);
+        };
+
+        user_info.is_writable()?.has_seeds(
+            &[User::SEED_PREFIX.as_bytes(), payer.key.as_ref()],
+            program_id,
+        )?;
+
+        // create the user account
+        create_account::<User>(
+            user_info,
+            system_program,
+            payer,
+            program_id,
+            &[User::SEED_PREFIX.as_bytes(), payer.key.as_ref()],
+        )?;
+
+        let user = user_info.as_account_mut::<User>(program_id)?;
+
+        *user = User { name: args.name };
+
+        Ok(())
+    }
+}
+
+instruction!(SteelInstruction, CloseUser);
+/// Close User Instruction
+#[repr(C, packed)]
+#[derive(Clone, Copy, Debug, Pod, Zeroable)]
+pub struct CloseUser {}
+
+impl CloseUser {
+    pub fn process(program_id: &Pubkey, accounts: &[AccountInfo<'_>]) -> ProgramResult {
+        let [user_info, payer, _system_program] = accounts else {
+            return Err(ProgramError::NotEnoughAccountKeys);
+        };
+
+        // ensure it's the same account
+        user_info.is_writable()?.has_seeds(
+            &[User::SEED_PREFIX.as_bytes(), payer.key.as_ref()],
+            program_id,
+        )?;
+
+        // close the program account, transfer lamports to payer
+        user_info.close(payer)
+    }
+}

basics/close-account/steel/api/src/lib.rs

@@ -0,0 +1,11 @@
+pub mod instruction;
+pub mod state;
+
+pub mod prelude {
+    pub use crate::instruction::*;
+    pub use crate::state::*;
+}
+
+use steel::*;
+
+declare_id!("z7msBPQHDJjTvdQRoEcKyENgXDhSRYeHieN1ZMTqo35");

basics/close-account/steel/api/src/state.rs

@@ -0,0 +1,20 @@
+use steel::*;
+
+/// account discriminator
+#[repr(u8)]
+#[derive(Clone, Copy, Debug, Eq, PartialEq, IntoPrimitive, TryFromPrimitive)]
+pub enum SteelAccount {
+    User = 0,
+}
+
+account!(SteelAccount, User);
+/// User
+#[repr(C, packed)]
+#[derive(Clone, Copy, Debug, PartialEq, Pod, Zeroable)]
+pub struct User {
+    pub name: [u8; 48],
+}
+
+impl User {
+    pub const SEED_PREFIX: &'static str = "USER";
+}

basics/close-account/steel/cicd.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# This script is for quick building & deploying of the program.
+# It also serves as a reference for the commands used for building & deploying Solana programs.
+# Run this bad boy with "bash cicd.sh" or "./cicd.sh"
+
+cargo build-sbf --manifest-path=./program/Cargo.toml --bpf-out-dir=./program/target/so
+solana program deploy ./program/target/so/program.so

basics/close-account/steel/package.json

@@ -0,0 +1,22 @@
+{
+  "scripts": {
+    "test": "pnpm ts-mocha -p ./tests/tsconfig.test.json -t 1000000 ./tests/close-account.test.ts",
+    "build-and-test": "cargo build-sbf --manifest-path=./program/Cargo.toml --sbf-out-dir=./tests/fixtures && pnpm test",
+    "build": "cargo build-sbf --manifest-path=./program/Cargo.toml --sbf-out-dir=./program/target/so",
+    "deploy": "solana program deploy ./program/target/so/program.so"
+  },
+  "dependencies": {
+    "@solana/web3.js": "^1.95.4"
+  },
+  "devDependencies": {
+    "@types/bn.js": "^5.1.0",
+    "@types/chai": "^4.3.1",
+    "@types/mocha": "^10.0.9",
+    "borsh": "0.7.0",
+    "chai": "^4.3.4",
+    "mocha": "^10.8.2",
+    "solana-bankrun": "^0.4.0",
+    "ts-mocha": "^10.0.0",
+    "typescript": "^5.6.3"
+  }
+}