mecha10_cli/services/

project_template_service.rs

//! Project template service for generating project files
//!
//! This service coordinates template generation across specialized modules:
//! - Rust templates (Cargo.toml, main.rs, build.rs)
//! - Infrastructure templates (docker-compose.yml, .env)
//! - Meta templates (README.md, .gitignore, package.json)
//! - Embedded directory structure
//!
//! # Architecture
//!
//! Templates are organized into focused modules under `crate::templates`:
//! - **RustTemplates**: Rust-specific files
//! - **InfraTemplates**: Infrastructure files
//! - **MetaTemplates**: Project metadata files
//! - **EmbeddedTemplates**: Directory structure
//!
//! Template content is stored in external files at `packages/cli/templates/`
//! and embedded at compile time using `include_str!()`.

use crate::templates::{EmbeddedTemplates, InfraTemplates, MetaTemplates, RustTemplates};
use anyhow::{Context, Result};
use std::path::Path;

// Embedded configuration templates
const MECHA10_JSON_TEMPLATE: &str = include_str!("../../templates/config/mecha10.json.template");
// Templates removed - we copy directly from examples instead

/// Service for generating project template files
///
/// # Examples
///
/// ```rust,ignore
/// use mecha10_cli::services::ProjectTemplateService;
///
/// let service = ProjectTemplateService::new();
///
/// // Generate all project files
/// service.create_readme(&project_path, "my-robot").await?;
/// service.create_cargo_toml(&project_path, "my-robot", false).await?;
/// ```
pub struct ProjectTemplateService {
    rust: RustTemplates,
    infra: InfraTemplates,
    meta: MetaTemplates,
    embedded: EmbeddedTemplates,
}

impl ProjectTemplateService {
    /// Create a new ProjectTemplateService
    pub fn new() -> Self {
        Self {
            rust: RustTemplates::new(),
            infra: InfraTemplates::new(),
            meta: MetaTemplates::new(),
            embedded: EmbeddedTemplates::new(),
        }
    }

    /// Create README.md for the project
    pub async fn create_readme(&self, path: &Path, project_name: &str) -> Result<()> {
        self.meta.create_readme(path, project_name).await
    }

    /// Create .gitignore for the project
    pub async fn create_gitignore(&self, path: &Path) -> Result<()> {
        self.meta.create_gitignore(path).await
    }

    /// Create .cargo/config.toml for framework development
    ///
    /// This patches all mecha10-* dependencies to use local paths instead of crates.io.
    /// Requires a framework_path pointing to the mecha10-monorepo root.
    pub async fn create_cargo_config(&self, path: &Path, framework_path: &str) -> Result<()> {
        self.rust.create_cargo_config(path, framework_path).await
    }

    /// Create Cargo.toml for the project
    ///
    /// # Arguments
    ///
    /// * `path` - Project root path
    /// * `project_name` - Name of the project
    /// * `dev` - Whether this is for framework development (affects dependency resolution)
    pub async fn create_cargo_toml(&self, path: &Path, project_name: &str, dev: bool) -> Result<()> {
        self.rust.create_cargo_toml(path, project_name, dev).await
    }

    /// Create src/main.rs for the project
    pub async fn create_main_rs(&self, path: &Path, project_name: &str) -> Result<()> {
        self.rust.create_main_rs(path, project_name).await
    }

    /// Create build.rs for the project
    ///
    /// This build script generates:
    /// 1. node_registry.rs - Node dispatcher based on mecha10.json
    /// 2. embedded.rs - Embedded asset accessors
    pub async fn create_build_rs(&self, path: &Path) -> Result<()> {
        self.rust.create_build_rs(path).await
    }

    /// Create embedded directory structure
    pub async fn create_embedded_structure(&self, path: &Path) -> Result<()> {
        self.embedded.create_structure(path).await
    }

    /// Create .env.example for the project
    ///
    /// # Arguments
    ///
    /// * `path` - Project root path
    /// * `project_name` - Name of the project
    /// * `framework_path` - Optional framework path for development mode
    pub async fn create_env_example(
        &self,
        path: &Path,
        project_name: &str,
        framework_path: Option<String>,
    ) -> Result<()> {
        self.infra.create_env_example(path, project_name, framework_path).await
    }

    /// Create rustfmt.toml for the project
    pub async fn create_rustfmt_toml(&self, path: &Path) -> Result<()> {
        self.rust.create_rustfmt_toml(path).await
    }

    /// Create docker-compose.yml for the project
    ///
    /// Generates a Docker Compose file with Redis and optional PostgreSQL services
    /// for local development and deployment.
    ///
    /// # Arguments
    ///
    /// * `path` - Project root path
    /// * `project_name` - Name of the project (used for container naming)
    pub async fn create_docker_compose(&self, path: &Path, project_name: &str) -> Result<()> {
        self.infra.create_docker_compose(path, project_name).await
    }

    /// Create package.json for npm dependencies
    ///
    /// Includes @mecha10/simulation-models and @mecha10/simulation-environments dependencies.
    /// Resolution happens at runtime via MECHA10_FRAMEWORK_PATH env var:
    /// - If set: Uses local monorepo packages
    /// - If not set: Uses node_modules/@mecha10/* (requires npm install)
    ///
    /// # Arguments
    ///
    /// * `path` - Project root path
    /// * `project_name` - Name of the project
    pub async fn create_package_json(&self, path: &Path, project_name: &str) -> Result<()> {
        self.meta.create_package_json(path, project_name).await
    }

    /// Create requirements.txt for Python dependencies
    ///
    /// Includes Python packages needed for AI nodes (onnx, onnxruntime).
    /// Install with: `mecha10 setup` or `pip install -r requirements.txt`
    ///
    /// # Arguments
    ///
    /// * `path` - Project root path
    pub async fn create_requirements_txt(&self, path: &Path) -> Result<()> {
        self.meta.create_requirements_txt(path).await
    }

    /// Create mecha10.json configuration file
    ///
    /// Generates the main project configuration file with robot identity,
    /// simulation settings, nodes, services, and Docker configuration.
    ///
    /// # Arguments
    ///
    /// * `path` - Project root directory
    /// * `project_name` - Name of the project
    /// * `template` - Robot template (rover, humanoid, etc.)
    pub async fn create_mecha10_json(&self, path: &Path, project_name: &str, template: &Option<String>) -> Result<()> {
        let platform = template.as_deref().unwrap_or("basic");
        let project_id = project_name.replace('-', "_");

        // Render template with handlebars
        let config_content = MECHA10_JSON_TEMPLATE
            .replace("{{project_name}}", project_name)
            .replace("{{project_id}}", &project_id)
            .replace("{{platform}}", platform);

        tokio::fs::write(path.join("mecha10.json"), config_content).await?;
        Ok(())
    }

    /// Create simulation/models/model.json
    ///
    /// Generates the rover robot physical model configuration for Godot simulation
    /// from embedded template.
    ///
    /// # Arguments
    ///
    /// * `path` - Project root directory
    pub async fn create_simulation_model_json(&self, path: &Path) -> Result<()> {
        let model_dest = path.join("simulation/models/model.json");

        // Ensure destination directory exists
        if let Some(parent) = model_dest.parent() {
            tokio::fs::create_dir_all(parent).await?;
        }

        // Detect framework path
        let framework_path = std::env::var("MECHA10_FRAMEWORK_PATH").unwrap_or_else(|_| {
            // Try to detect from current directory
            std::env::current_dir()
                .ok()
                .and_then(|mut d| {
                    loop {
                        if d.join("packages/core").exists() {
                            return Some(d.to_string_lossy().to_string());
                        }
                        if !d.pop() {
                            break;
                        }
                    }
                    None
                })
                .unwrap_or_else(|| ".".to_string())
        });

        // Copy from rover example
        let source_model =
            std::path::PathBuf::from(&framework_path).join("packages/simulation/models/rover/model.json");

        tokio::fs::copy(&source_model, &model_dest)
            .await
            .context("Failed to copy model.json from rover example")?;

        Ok(())
    }

    /// Create simulation/environments/basic_arena/environment.json
    ///
    /// Generates the basic arena environment configuration for Godot simulation
    /// from embedded template.
    ///
    /// # Arguments
    ///
    /// * `path` - Project root directory
    pub async fn create_simulation_environment_json(&self, path: &Path) -> Result<()> {
        let env_dest = path.join("simulation/environments/basic_arena/environment.json");

        // Ensure destination directory exists
        if let Some(parent) = env_dest.parent() {
            tokio::fs::create_dir_all(parent).await?;
        }

        // Detect framework path
        let framework_path = std::env::var("MECHA10_FRAMEWORK_PATH").unwrap_or_else(|_| {
            // Try to detect from current directory
            std::env::current_dir()
                .ok()
                .and_then(|mut d| {
                    loop {
                        if d.join("packages/core").exists() {
                            return Some(d.to_string_lossy().to_string());
                        }
                        if !d.pop() {
                            break;
                        }
                    }
                    None
                })
                .unwrap_or_else(|| ".".to_string())
        });

        // Copy from basic_arena example
        let source_env = std::path::PathBuf::from(&framework_path)
            .join("packages/simulation/environments/basic_arena/environment.json");

        tokio::fs::copy(&source_env, &env_dest)
            .await
            .context("Failed to copy environment.json from basic_arena example")?;

        Ok(())
    }
}

impl Default for ProjectTemplateService {
    fn default() -> Self {
        Self::new()
    }
}