Make scarb new and init command interactive (#1472)

Closes #1207 
Closes
[#1982](foundry-rs/starknet-foundry#1982)

Make scarb new and init command interactive

Cargo.toml

@@ -68,6 +68,7 @@ darling = "0.20"
 data-encoding = "2"
 deno_task_shell = ">=0.13"
 derive_builder = ">=0.12"
+dialoguer = "0.11.0"
 directories = "5"
 dunce = "1"
 expect-test = "1.5"

scarb-metadata/tests/command.rs

@@ -70,6 +70,7 @@ fn manifest_path() {
 fn init_project(t: &TempDir) {
     Command::new(scarb_bin())
         .args(["init", "--name", "hello"])
+        .env("SCARB_INIT_TEST_RUNNER", "cairo-test")
         .current_dir(t)
         .assert()
         .success();

scarb-metadata/tests/scarb_command.rs

@@ -41,6 +41,7 @@ fn sample_project() {
 fn init_project(t: &TempDir) {
     Command::new(scarb_bin())
         .args(["init", "--name", "hello"])
+        .env("SCARB_INIT_TEST_RUNNER", "cairo-test")
         .current_dir(t)
         .assert()
         .success();

scarb/Cargo.toml

@@ -40,6 +40,7 @@ create-output-dir = { path = "../utils/create-output-dir" }
 data-encoding.workspace = true
 deno_task_shell.workspace = true
 derive_builder.workspace = true
+dialoguer.workspace = true
 directories.workspace = true
 dunce.workspace = true
 fs4.workspace = true

scarb/src/bin/scarb/args.rs

@@ -272,6 +272,12 @@ pub struct ScriptsRunnerArgs {
     pub args: Vec<OsString>,
 }
 
+#[derive(ValueEnum, Clone, Debug)]
+pub enum TestRunner {
+    StarknetFoundry,
+    CairoTest,
+}
+
 /// Arguments accepted by the `init` command.
 #[derive(Parser, Clone, Debug)]
 pub struct InitArgs {
@@ -283,9 +289,9 @@ pub struct InitArgs {
     #[arg(long)]
     pub no_vcs: bool,
 
-    /// Use a Starknet Foundry Forge template.
-    #[arg(long)]
-    pub snforge: bool,
+    /// Test runner to use. Starts interactive session if not specified.
+    #[arg(long, env = "SCARB_INIT_TEST_RUNNER")]
+    pub test_runner: Option<TestRunner>,
 }
 
 /// Arguments accepted by the `metadata` command.

scarb/src/bin/scarb/commands/init.rs

@@ -6,7 +6,8 @@ use camino::Utf8PathBuf;
 use scarb::core::Config;
 use scarb::ops::{self, VersionControl};
 
-use crate::args::InitArgs;
+use crate::args::{InitArgs, TestRunner};
+use crate::interactive::get_or_ask_for_test_runner;
 
 #[tracing::instrument(skip_all, level = "info")]
 pub fn run(args: InitArgs, config: &Config) -> Result<()> {
@@ -24,7 +25,10 @@ pub fn run(args: InitArgs, config: &Config) -> Result<()> {
             } else {
                 VersionControl::Git
             },
-            snforge: args.snforge,
+            snforge: matches!(
+                get_or_ask_for_test_runner(args.test_runner)?,
+                TestRunner::StarknetFoundry
+            ),
         },
         config,
     )?;

scarb/src/bin/scarb/commands/new.rs

@@ -3,7 +3,8 @@ use anyhow::Result;
 use scarb::core::Config;
 use scarb::ops::{self, VersionControl};
 
-use crate::args::NewArgs;
+use crate::args::{NewArgs, TestRunner};
+use crate::interactive::get_or_ask_for_test_runner;
 
 #[tracing::instrument(skip_all, level = "info")]
 pub fn run(args: NewArgs, config: &Config) -> Result<()> {
@@ -18,7 +19,10 @@ pub fn run(args: NewArgs, config: &Config) -> Result<()> {
             } else {
                 VersionControl::Git
             },
-            snforge: args.init.snforge,
+            snforge: matches!(
+                get_or_ask_for_test_runner(args.init.test_runner)?,
+                TestRunner::StarknetFoundry
+            ),
         },
         config,
     )?;

scarb/src/bin/scarb/interactive.rs

@@ -0,0 +1,45 @@
+use std::io::{self, IsTerminal};
+
+use crate::args::TestRunner;
+use anyhow::{ensure, Result};
+use dialoguer::theme::ColorfulTheme;
+use dialoguer::Select;
+use indoc::indoc;
+use which::which;
+
+pub fn get_or_ask_for_test_runner(test_runner: Option<TestRunner>) -> Result<TestRunner> {
+    Ok(test_runner)
+        .transpose()
+        .unwrap_or_else(ask_for_test_runner)
+}
+
+fn ask_for_test_runner() -> Result<TestRunner> {
+    ensure!(
+        io::stdout().is_terminal(),
+        indoc! {r"
+            you are not running in terminal
+            help: please provide the --test-runner flag
+        "}
+    );
+
+    let options = if which("snforge").is_ok() {
+        vec!["Starknet Foundry (default)", "Cairo Test"]
+    } else {
+        vec![
+            "Cairo Test (default)",
+            "Starknet Foundry (recommended, requires snforge installed: https://github.com/foundry-rs/starknet-foundry)",
+        ]
+    };
+
+    let selection = Select::with_theme(&ColorfulTheme::default())
+        .with_prompt("Which test runner do you want to set up?")
+        .items(&options)
+        .default(0)
+        .interact()?;
+
+    if options[selection].starts_with("Cairo Test") {
+        Ok(TestRunner::CairoTest)
+    } else {
+        Ok(TestRunner::StarknetFoundry)
+    }
+}

scarb/src/bin/scarb/main.rs

@@ -17,6 +17,7 @@ use crate::errors::ErrorWithExitCode;
 mod args;
 mod commands;
 mod errors;
+mod interactive;
 
 fn main() {
     let args = ScarbArgs::parse();

scarb/tests/new_and_init.rs

@@ -122,7 +122,7 @@ fn new_no_path_arg() {
             error: the following required arguments were not provided:
               <PATH>
 
-            Usage: scarb[..] new <PATH>
+            Usage: scarb[..] new [..] <PATH>
 
             For more information, try '--help'.
         "#});
@@ -146,6 +146,41 @@ fn new_existing() {
         "#});
 }
 
+#[test]
+fn new_interactive_not_in_terminal() {
+    let pt = assert_fs::TempDir::new().unwrap();
+
+    Scarb::quick_snapbox()
+        .arg("new")
+        .arg("hello")
+        .env_remove("SCARB_INIT_TEST_RUNNER")
+        .current_dir(&pt)
+        .assert()
+        .failure()
+        .stdout_eq(indoc! {r"
+            error: you are not running in terminal
+            help: please provide the --test-runner flag
+        "});
+}
+
+#[test]
+fn init_interactive_not_in_terminal() {
+    let pt = assert_fs::TempDir::new().unwrap();
+    let t = pt.child("hello");
+    t.create_dir_all().unwrap();
+
+    Scarb::quick_snapbox()
+        .arg("init")
+        .env_remove("SCARB_INIT_TEST_RUNNER")
+        .current_dir(&t)
+        .assert()
+        .failure()
+        .stdout_eq(indoc! {r"
+            error: you are not running in terminal
+            help: please provide the --test-runner flag
+        "});
+}
+
 #[test]
 fn issue_148() {
     let pt = assert_fs::TempDir::new().unwrap();

scarb/tests/snforge_init.rs

@@ -12,7 +12,7 @@ fn new_simple() {
     Scarb::quick_snapbox()
         .arg("new")
         .arg("hello")
-        .arg("--snforge")
+        .args(["--test-runner", "starknet-foundry"])
         .current_dir(&pt)
         .assert()
         .success();

utils/scarb-test-support/src/command.rs

@@ -54,6 +54,7 @@ impl Scarb {
         cmd.env("SCARB_LOG", self.log);
         cmd.env("SCARB_CACHE", self.cache.path());
         cmd.env("SCARB_CONFIG", self.config.path());
+        cmd.env("SCARB_INIT_TEST_RUNNER", "cairo-test");
         cmd
     }