Add aiscript new command to create new project (#21)

* Add `aiscript new` command to create new project

* Fix unit tests

* Cargo fmt and clippy

Author: Folyd

Cargo.lock

@@ -24,6 +24,10 @@ dotenv = "0.15.0"
 rustyline = "15.0"
 dirs = "6.0"
 serde.workspace = true
+whoami = "1.4.1"
+
+[dev-dependencies]
+tempfile = "3.8.1"
 
 [features]
 ai_test = ["aiscript-vm/ai_test"]

aiscript/Cargo.toml

@@ -7,8 +7,11 @@ use clap::{Parser, Subcommand};
 use repr::Repl;
 use tokio::task;
 
+mod project;
 mod repr;
 
+use project::ProjectGenerator;
+
 #[derive(Parser)]
 #[command(version, about, long_about = None)]
 struct AIScriptCli {
@@ -34,6 +37,12 @@ enum Commands {
         #[arg(short, long, default_value_t = false)]
         reload: bool,
     },
+    /// Create a new AIScript project with a standard directory structure.
+    New {
+        /// The name of the new project
+        #[arg(value_name = "PROJECT_NAME")]
+        name: String,
+    },
 }
 
 #[tokio::main]
@@ -47,6 +56,13 @@ async fn main() {
             println!("Server listening on port http://localhost:{}", port);
             aiscript_runtime::run(file, port, reload).await;
         }
+        Some(Commands::New { name }) => {
+            let generator = ProjectGenerator::new(&name);
+            if let Err(e) = generator.generate() {
+                eprintln!("{}", e);
+                process::exit(1);
+            }
+        }
         None => {
             if let Some(path) = cli.file {
                 let pg_connection = aiscript_runtime::get_pg_connection().await;

aiscript/src/main.rs

@@ -0,0 +1,227 @@
+use std::fs;
+use std::io::Write;
+use std::path::PathBuf;
+
+pub struct ProjectGenerator {
+    project_name: String,
+    project_path: PathBuf,
+}
+
+impl ProjectGenerator {
+    pub fn new(project_name: &str) -> Self {
+        let project_path = PathBuf::from(project_name);
+        Self {
+            project_name: project_name.to_string(),
+            project_path,
+        }
+    }
+
+    pub fn generate(&self) -> Result<(), String> {
+        // Check if directory already exists
+        if self.project_path.exists() {
+            return Err(format!(
+                "Error: Directory '{}' already exists",
+                self.project_name
+            ));
+        }
+
+        // Create project directory
+        fs::create_dir_all(&self.project_path).map_err(|e| {
+            format!(
+                "Failed to create project directory '{}': {}",
+                self.project_name, e
+            )
+        })?;
+
+        // Create standard directories
+        self.create_directories()?;
+
+        // Create project.toml
+        self.create_project_toml()?;
+
+        // Create basic example file
+        self.create_example_file()?;
+
+        println!(
+            "Successfully created new AIScript project: {}",
+            self.project_name
+        );
+        println!("Project structure:");
+        println!("{}", self.display_project_structure());
+        println!();
+        println!("Run `aiscript serve` to start the server.");
+
+        Ok(())
+    }
+
+    fn create_directories(&self) -> Result<(), String> {
+        let dirs = vec!["lib", "routes"];
+
+        for dir in dirs {
+            let dir_path = self.project_path.join(dir);
+            fs::create_dir_all(&dir_path).map_err(|e| {
+                format!("Failed to create directory '{}': {}", dir_path.display(), e)
+            })?;
+        }
+
+        Ok(())
+    }
+
+    fn create_project_toml(&self) -> Result<(), String> {
+        let toml_path = self.project_path.join("project.toml");
+        let username = whoami::username();
+
+        let toml_content = format!(
+            r#"[project]
+name = "{}"
+description = "An AIScript project"
+version = "0.1.0"
+authors = ["{}"]
+
+[network]
+host = "0.0.0.0"
+port = 8000
+
+[apidoc]
+enabled = true
+type = "redoc"
+path = "/docs"
+"#,
+            self.project_name, username
+        );
+
+        let mut file = fs::File::create(&toml_path)
+            .map_err(|e| format!("Failed to create project.toml: {}", e))?;
+
+        file.write_all(toml_content.as_bytes())
+            .map_err(|e| format!("Failed to write to project.toml: {}", e))?;
+
+        Ok(())
+    }
+
+    fn create_example_file(&self) -> Result<(), String> {
+        let routes_dir = self.project_path.join("routes");
+        let example_path = routes_dir.join("index.ai");
+
+        let example_content = r#"// Example AIScript route handler
+get /hello {
+    query {
+        name: str
+    }
+
+    return { message: f"Hello, {query.name}!" };
+}
+"#;
+
+        let mut file = fs::File::create(&example_path)
+            .map_err(|e| format!("Failed to create example file: {}", e))?;
+
+        file.write_all(example_content.as_bytes())
+            .map_err(|e| format!("Failed to write to example file: {}", e))?;
+
+        Ok(())
+    }
+
+    fn display_project_structure(&self) -> String {
+        let mut result = format!("{}\n", self.project_name);
+        result.push_str("├── lib/\n");
+        result.push_str("├── routes/\n");
+        result.push_str("│   └── index.ai\n");
+        result.push_str("└── project.toml\n");
+
+        result
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::fs;
+    use tempfile::tempdir;
+
+    #[test]
+    fn test_project_generator() {
+        // Use tempdir to ensure test files are cleaned up
+        let temp_dir = tempdir().unwrap();
+        let temp_path = temp_dir.path();
+
+        // Create a test project in the temp directory
+        let project_name = "test_project";
+
+        // Create an absolute path for the project
+        let project_path = temp_path.join(project_name);
+
+        // Create a generator with the project name
+        let generator = ProjectGenerator::new(project_name);
+
+        // Override the project path for testing
+        let generator = ProjectGenerator {
+            project_name: project_name.to_string(),
+            project_path: project_path.clone(),
+        };
+
+        let result = generator.generate();
+
+        assert!(result.is_ok(), "Project generation failed: {:?}", result);
+
+        // Verify project structure
+        assert!(project_path.exists(), "Project directory not created");
+        assert!(
+            project_path.join("lib").exists(),
+            "lib directory not created"
+        );
+        assert!(
+            project_path.join("routes").exists(),
+            "routes directory not created"
+        );
+        assert!(
+            project_path.join("project.toml").exists(),
+            "project.toml not created"
+        );
+        assert!(
+            project_path.join("routes/index.ai").exists(),
+            "Example file not created"
+        );
+
+        // Verify project.toml content
+        let toml_content = fs::read_to_string(project_path.join("project.toml")).unwrap();
+        assert!(toml_content.contains(&format!("name = \"{}\"", project_name)));
+        assert!(toml_content.contains("version = \"0.1.0\""));
+
+        // Verify example file content
+        let example_content = fs::read_to_string(project_path.join("routes/index.ai")).unwrap();
+        assert!(example_content.contains("get /hello"));
+    }
+
+    #[test]
+    fn test_project_already_exists() {
+        // Use tempdir to ensure test files are cleaned up
+        let temp_dir = tempdir().unwrap();
+        let temp_path = temp_dir.path();
+
+        // Create a directory that will conflict
+        let project_name = "existing_project";
+        let project_path = temp_path.join(project_name);
+        fs::create_dir_all(&project_path).unwrap();
+
+        // Create a generator with absolute path
+        let generator = ProjectGenerator {
+            project_name: project_name.to_string(),
+            project_path,
+        };
+
+        let result = generator.generate();
+
+        assert!(
+            result.is_err(),
+            "Project generation should fail for existing directory"
+        );
+        if let Err(err) = result {
+            assert!(
+                err.contains("already exists"),
+                "Wrong error message: {}",
+                err
+            );
+        }
+    }
+}

aiscript/src/project.rs

@@ -8,4 +8,12 @@ get /guess {
 
     let message = "You got it!" if query.value == 42 else "Try again";
     return { message };
+}
+
+get /hello {
+    query {
+        name: str
+    }
+
+    return { message: f"Hello, {query.name}!" };
 }