From 20e4435b12db62b9e79fe81c5796e2351f7e60e1 Mon Sep 17 00:00:00 2001
From: Chad Ostrowski <221614+chadoh@users.noreply.github.com>
Date: Mon, 9 Dec 2024 13:54:12 -0500
Subject: [PATCH] feat: add example contracts

The `stellar contract init` command no longer works with
`--frontend-template` (https://github.com/stellar/stellar-cli/pull/1625)

This means that templates like this one need to hard-code their own list
of contracts.
---
 contracts/hello_world/Cargo.lock  | 1618 +++++++++++++++++++++++++++++
 contracts/hello_world/Cargo.toml  |   29 +
 contracts/hello_world/Makefile    |   16 +
 contracts/hello_world/src/lib.rs  |   14 +
 contracts/hello_world/src/test.rs |   21 +
 contracts/increment/Cargo.lock    | 1618 +++++++++++++++++++++++++++++
 contracts/increment/Cargo.toml    |   29 +
 contracts/increment/Makefile      |   16 +
 contracts/increment/src/lib.rs    |   34 +
 contracts/increment/src/test.rs   |   14 +
 10 files changed, 3409 insertions(+)
 create mode 100644 contracts/hello_world/Cargo.lock
 create mode 100644 contracts/hello_world/Cargo.toml
 create mode 100644 contracts/hello_world/Makefile
 create mode 100644 contracts/hello_world/src/lib.rs
 create mode 100644 contracts/hello_world/src/test.rs
 create mode 100644 contracts/increment/Cargo.lock
 create mode 100644 contracts/increment/Cargo.toml
 create mode 100644 contracts/increment/Makefile
 create mode 100644 contracts/increment/src/lib.rs
 create mode 100644 contracts/increment/src/test.rs

diff --git a/contracts/hello_world/Cargo.lock b/contracts/hello_world/Cargo.lock
new file mode 100644
index 0000000..7817217
--- /dev/null
+++ b/contracts/hello_world/Cargo.lock
@@ -0,0 +1,1618 @@
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diff --git a/contracts/hello_world/Cargo.toml b/contracts/hello_world/Cargo.toml
new file mode 100644
index 0000000..0a9dfd1
--- /dev/null
+++ b/contracts/hello_world/Cargo.toml
@@ -0,0 +1,29 @@
+[package]
+name = "soroban-hello-world-contract"
+version = "0.0.0"
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+doctest = false
+
+[dependencies]
+soroban-sdk = { version = "22.0.1" }
+
+[dev-dependencies]
+soroban-sdk = { version = "22.0.1", features = ["testutils"] }
+
+[profile.release]
+opt-level = "z"
+overflow-checks = true
+debug = 0
+strip = "symbols"
+debug-assertions = false
+panic = "abort"
+codegen-units = 1
+lto = true
+
+[profile.release-with-logs]
+inherits = "release"
+debug-assertions = true
diff --git a/contracts/hello_world/Makefile b/contracts/hello_world/Makefile
new file mode 100644
index 0000000..7f774ad
--- /dev/null
+++ b/contracts/hello_world/Makefile
@@ -0,0 +1,16 @@
+default: build
+
+all: test
+
+test: build
+	cargo test
+
+build:
+	stellar contract build
+	@ls -l target/wasm32-unknown-unknown/release/*.wasm
+
+fmt:
+	cargo fmt --all
+
+clean:
+	cargo clean
diff --git a/contracts/hello_world/src/lib.rs b/contracts/hello_world/src/lib.rs
new file mode 100644
index 0000000..f3eb78a
--- /dev/null
+++ b/contracts/hello_world/src/lib.rs
@@ -0,0 +1,14 @@
+#![no_std]
+use soroban_sdk::{contract, contractimpl, vec, Env, String, Vec};
+
+#[contract]
+pub struct HelloContract;
+
+#[contractimpl]
+impl HelloContract {
+    pub fn hello(env: Env, to: String) -> Vec<String> {
+        vec![&env, String::from_str(&env, "Hello"), to]
+    }
+}
+
+mod test;
diff --git a/contracts/hello_world/src/test.rs b/contracts/hello_world/src/test.rs
new file mode 100644
index 0000000..8b7f44b
--- /dev/null
+++ b/contracts/hello_world/src/test.rs
@@ -0,0 +1,21 @@
+#![cfg(test)]
+
+use super::*;
+use soroban_sdk::{vec, Env, String};
+
+#[test]
+fn test() {
+    let env = Env::default();
+    let contract_id = env.register(HelloContract, ());
+    let client = HelloContractClient::new(&env, &contract_id);
+
+    let words = client.hello(&String::from_str(&env, "Dev"));
+    assert_eq!(
+        words,
+        vec![
+            &env,
+            String::from_str(&env, "Hello"),
+            String::from_str(&env, "Dev"),
+        ]
+    );
+}
diff --git a/contracts/increment/Cargo.lock b/contracts/increment/Cargo.lock
new file mode 100644
index 0000000..4e94724
--- /dev/null
+++ b/contracts/increment/Cargo.lock
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diff --git a/contracts/increment/Cargo.toml b/contracts/increment/Cargo.toml
new file mode 100644
index 0000000..2de201c
--- /dev/null
+++ b/contracts/increment/Cargo.toml
@@ -0,0 +1,29 @@
+[package]
+name = "soroban-increment-contract"
+version = "0.0.0"
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["cdylib"]
+doctest = false
+
+[dependencies]
+soroban-sdk = { version = "22.0.1" }
+
+[dev-dependencies]
+soroban-sdk = { version = "22.0.1", features = ["testutils"] }
+
+[profile.release]
+opt-level = "z"
+overflow-checks = true
+debug = 0
+strip = "symbols"
+debug-assertions = false
+panic = "abort"
+codegen-units = 1
+lto = true
+
+[profile.release-with-logs]
+inherits = "release"
+debug-assertions = true
diff --git a/contracts/increment/Makefile b/contracts/increment/Makefile
new file mode 100644
index 0000000..7f774ad
--- /dev/null
+++ b/contracts/increment/Makefile
@@ -0,0 +1,16 @@
+default: build
+
+all: test
+
+test: build
+	cargo test
+
+build:
+	stellar contract build
+	@ls -l target/wasm32-unknown-unknown/release/*.wasm
+
+fmt:
+	cargo fmt --all
+
+clean:
+	cargo clean
diff --git a/contracts/increment/src/lib.rs b/contracts/increment/src/lib.rs
new file mode 100644
index 0000000..0a0d0f8
--- /dev/null
+++ b/contracts/increment/src/lib.rs
@@ -0,0 +1,34 @@
+#![no_std]
+use soroban_sdk::{contract, contractimpl, log, symbol_short, Env, Symbol};
+
+const COUNTER: Symbol = symbol_short!("COUNTER");
+
+#[contract]
+pub struct IncrementContract;
+
+#[contractimpl]
+impl IncrementContract {
+    /// Increment increments an internal counter, and returns the value.
+    pub fn increment(env: Env) -> u32 {
+        // Get the current count.
+        let mut count: u32 = env.storage().instance().get(&COUNTER).unwrap_or(0); // If no value set, assume 0.
+        log!(&env, "count: {}", count);
+
+        // Increment the count.
+        count += 1;
+
+        // Save the count.
+        env.storage().instance().set(&COUNTER, &count);
+
+        // The contract instance will be bumped to have a lifetime of at least 100 ledgers if the current expiration lifetime at most 50.
+        // If the lifetime is already more than 100 ledgers, this is a no-op. Otherwise,
+        // the lifetime is extended to 100 ledgers. This lifetime bump includes the contract
+        // instance itself and all entries in storage().instance(), i.e, COUNTER.
+        env.storage().instance().extend_ttl(50, 100);
+
+        // Return the count to the caller.
+        count
+    }
+}
+
+mod test;
diff --git a/contracts/increment/src/test.rs b/contracts/increment/src/test.rs
new file mode 100644
index 0000000..5f81be7
--- /dev/null
+++ b/contracts/increment/src/test.rs
@@ -0,0 +1,14 @@
+#![cfg(test)]
+use crate::{IncrementContract, IncrementContractClient};
+use soroban_sdk::Env;
+
+#[test]
+fn test() {
+    let env = Env::default();
+    let contract_id = env.register(IncrementContract, ());
+    let client = IncrementContractClient::new(&env, &contract_id);
+
+    assert_eq!(client.increment(), 1);
+    assert_eq!(client.increment(), 2);
+    assert_eq!(client.increment(), 3);
+}