feat: Add Ruby code generation target

.gitignore

@@ -4,6 +4,7 @@
 # Generated SDKs (pushed to separate repos)
 /xdk/python/
 /xdk/typescript/
+/xdk/ruby/
 
 # Deploy keys (never commit)
 /.keys/

Makefile

@@ -1,8 +1,8 @@
 # XDK SDK Generator
 
 .PHONY: all check build test clean help
-.PHONY: generate python typescript
-.PHONY: test-python test-typescript test-sdks
+.PHONY: generate python typescript ruby
+.PHONY: test-python test-typescript test-ruby test-sdks
 .PHONY: fmt clippy test-generator
 .PHONY: versions
 
@@ -16,14 +16,17 @@ all: check test-generator
 # SDK Generation (local dev)
 # =====================================
 
-generate: python typescript
+generate: python typescript ruby
 
 python:
 	cargo run -- python --latest true
 
 typescript:
 	cargo run -- typescript --latest true
 
+ruby:
+	cargo run -- ruby --latest true
+
 # =====================================
 # SDK Testing (local dev)
 # =====================================
@@ -36,6 +39,9 @@ test-python: python
 test-typescript: typescript
 	cd xdk/typescript && npm ci && npm run build && npm run type-check && npm test
 
+test-ruby: ruby
+	cd xdk/ruby && bundle install && bundle exec rspec spec/ --format documentation
+
 # =====================================
 # Generator
 # =====================================
@@ -61,14 +67,14 @@ test: test-generator test-sdks
 # =====================================
 
 versions:
-	@grep -E "^(python|typescript) = " xdk-config.toml
+	@grep -E "^(python|typescript|ruby) = " xdk-config.toml
 
 # =====================================
 # Cleanup
 # =====================================
 
 clean:
-	rm -rf xdk/python xdk/typescript
+	rm -rf xdk/python xdk/typescript xdk/ruby
 
 cargo-clean:
 	cargo clean
@@ -82,8 +88,10 @@ help:
 	@echo ""
 	@echo "Local Development:"
 	@echo "  make python          Generate Python SDK"
+	@echo "  make ruby            Generate Ruby SDK"
 	@echo "  make typescript      Generate TypeScript SDK"
 	@echo "  make test-python     Generate + test Python SDK"
+	@echo "  make test-ruby       Generate + test Ruby SDK"
 	@echo "  make test-typescript Generate + test TypeScript SDK"
 	@echo ""
 	@echo "Generator:"

xdk-build/src/main.rs

@@ -4,6 +4,7 @@
 // Declare modules
 mod error;
 mod python;
+mod ruby;
 mod typescript;
 mod utils;
 
@@ -50,6 +51,19 @@ enum Commands {
         #[arg(short, long, default_value = "xdk/typescript")]
         output: PathBuf,
     },
+    /// Generate a Ruby SDK from an OpenAPI specification
+    Ruby {
+        /// Path to the OpenAPI specification file
+        #[arg(short, long)]
+        spec: Option<PathBuf>,
+
+        #[arg(short, long)]
+        latest: Option<bool>,
+
+        /// Output directory for the generated SDK
+        #[arg(short, long, default_value = "xdk/ruby")]
+        output: PathBuf,
+    },
 }
 
 #[tokio::main]
@@ -164,6 +178,51 @@ async fn main() -> Result<()> {
             // Call the generate method - `?` handles the Result conversion
             typescript::generate(&openapi, &output)
         }
+        Commands::Ruby {
+            spec,
+            output,
+            latest,
+        } => {
+            let openapi = if latest == Some(true) {
+                let client = reqwest::Client::new();
+                let response = client
+                    .get("https://api.x.com/2/openapi.json")
+                    .send()
+                    .await
+                    .map_err(|e| {
+                        BuildError::CommandFailed(format!("Failed to fetch OpenAPI spec: {}", e))
+                    })?;
+
+                let json_text = response.text().await.map_err(|e| {
+                    BuildError::CommandFailed(format!("Failed to read response: {}", e))
+                })?;
+
+                parse_json(&json_text).map_err(|e| SdkGeneratorError::from(e.to_string()))?
+            } else {
+                let extension = spec
+                    .as_ref()
+                    .unwrap()
+                    .extension()
+                    .and_then(|ext| ext.to_str())
+                    .ok_or_else(|| {
+                        BuildError::CommandFailed("Invalid file extension".to_string())
+                    })?;
+
+                match extension {
+                    "yaml" | "yml" => parse_yaml_file(spec.as_ref().unwrap().to_str().unwrap())
+                        .map_err(|e| SdkGeneratorError::from(e.to_string()))?,
+                    "json" => parse_json_file(spec.as_ref().unwrap().to_str().unwrap())
+                        .map_err(|e| SdkGeneratorError::from(e.to_string()))?,
+                    _ => {
+                        let err_msg = format!("Unsupported file extension: {}", extension);
+                        return Err(BuildError::CommandFailed(err_msg));
+                    }
+                }
+            };
+
+            log_info!("Specification parsed successfully.");
+            ruby::generate(&openapi, &output)
+        }
     };
 
     // Handle the result with better error messaging

xdk-build/src/ruby.rs

@@ -0,0 +1,61 @@
+use crate::error::{BuildError, Result};
+use colored::*;
+use std::path::Path;
+use std::process::Command;
+use xdk_gen::Ruby;
+use xdk_lib::{XdkConfig, log_error, log_info, log_success};
+use xdk_openapi::OpenApi;
+
+/// Generates the Ruby SDK.
+pub fn generate(openapi: &OpenApi, output_dir: &Path) -> Result<()> {
+    log_info!("Generating Ruby SDK code...");
+
+    // Load configuration to get version
+    let config = XdkConfig::load_default().map_err(BuildError::SdkGenError)?;
+    let version = config.get_version("ruby").ok_or_else(|| {
+        BuildError::SdkGenError(xdk_lib::SdkGeneratorError::FrameworkError(
+            "Ruby version not found in config".to_string(),
+        ))
+    })?;
+
+    // Create output directory if it doesn't exist
+    if let Err(e) = std::fs::create_dir_all(output_dir) {
+        log_error!(
+            "Failed to create output directory '{}': {}",
+            output_dir.display(),
+            e
+        );
+        return Err(BuildError::IoError(e));
+    }
+
+    // Generate the SDK code
+    if let Err(e) = xdk_lib::generator::generate(Ruby, openapi, output_dir, version) {
+        log_error!("Failed to generate Ruby SDK code: {}", e);
+        return Err(BuildError::SdkGenError(e));
+    }
+    log_success!("SDK code generated.");
+
+    // Optionally run rubocop for formatting (if available)
+    if which_exists("rubocop") {
+        log_info!("Formatting code with rubocop...");
+        let mut fmt_cmd = Command::new("rubocop");
+        fmt_cmd.arg("-a").arg(output_dir);
+        // Best-effort formatting; don't fail the build if rubocop isn't configured
+        let _ = fmt_cmd.output();
+        log_success!("Rubocop formatting complete.");
+    }
+
+    log_success!(
+        "Successfully generated Ruby SDK in {}",
+        output_dir.display().to_string().magenta()
+    );
+    Ok(())
+}
+
+fn which_exists(cmd: &str) -> bool {
+    Command::new("which")
+        .arg(cmd)
+        .output()
+        .map(|o| o.status.success())
+        .unwrap_or(false)
+}

xdk-config.toml

@@ -7,3 +7,6 @@ python = "0.9.0"
 
 # TypeScript SDK version
 typescript = "0.5.0"
+
+# Ruby SDK version
+ruby = "0.1.1"

xdk-gen/src/lib.rs

@@ -31,7 +31,9 @@
 ///
 /// See the `python` module for a reference implementation of a language generator.
 pub use python::Python;
+pub use ruby::Ruby;
 pub use typescript::TypeScript;
 
 mod python;
+mod ruby;
 mod typescript;

xdk-gen/src/ruby/generator.rs

@@ -0,0 +1,69 @@
+/// Ruby SDK Generator Implementation
+///
+/// This file implements the Ruby generator using the `language!` macro.
+/// It defines filters for Ruby-specific formatting and implements the generator.
+use xdk_lib::{Casing, language, pascal_case};
+
+/// MiniJinja filter for converting OpenAPI types to Ruby types
+fn ruby_type(value: &str) -> String {
+    let ruby_type = match value {
+        "string" => "String",
+        "integer" => "Integer",
+        "number" => "Float",
+        "boolean" => "Boolean",
+        "array" => "Array",
+        "object" => "Hash",
+        _ => "Object",
+    };
+    ruby_type.to_string()
+}
+
+/// MiniJinja filter for getting the last part of a path (splits by both '/' and '.')
+fn last_part(value: &str) -> String {
+    value
+        .split('/')
+        .next_back()
+        .unwrap_or(value)
+        .split('.')
+        .next_back()
+        .unwrap_or(value)
+        .to_string()
+}
+
+/// Helper function for snake_case conversion (for use as a filter)
+fn snake_case(value: &str) -> String {
+    Casing::Snake.convert_string(value)
+}
+
+/*
+    This is the main generator for the Ruby SDK
+    It declares the templates and filters used as well as the rendering logic
+*/
+language! {
+    name: Ruby,
+    filters: [pascal_case, snake_case, ruby_type, last_part],
+    class_casing: Casing::Pascal,
+    operation_casing: Casing::Snake,
+    import_casing: Casing::Snake,
+    variable_casing: Casing::Snake,
+    render: [
+        multiple {
+            render "models" => "lib/xdk/{}/models.rb",
+            render "client_class" => "lib/xdk/{}/client.rb"
+        },
+        render "main_client" => "lib/xdk/client.rb",
+        render "version" => "lib/xdk/version.rb",
+        render "lib_entry" => "lib/xdk.rb",
+        render "gemspec" => "xdk.gemspec",
+        render "gemfile" => "Gemfile",
+        render "readme" => "README.md",
+        render "gitignore" => ".gitignore"
+    ],
+    tests: [
+        multiple {
+            render "test_contracts" => "spec/{}/contracts_spec.rb",
+            render "test_structure" => "spec/{}/structure_spec.rb"
+        },
+        render "spec_helper" => "spec/spec_helper.rb"
+    ]
+}

xdk-gen/src/ruby/mod.rs

@@ -0,0 +1,74 @@
+/// Ruby SDK Generator Module
+///
+/// This module implements the SDK generator for Ruby.
+mod generator;
+
+pub use generator::Ruby;
+
+#[cfg(test)]
+mod tests {
+    use crate::ruby::generator::Ruby;
+    use std::fs;
+    use std::path::Path;
+    use tempfile::Builder;
+    use xdk_lib::Result;
+    use xdk_lib::generator::generate;
+    use xdk_openapi::{OpenApiContextGuard, parse_json_file};
+
+    fn create_output_dir() -> std::path::PathBuf {
+        let temp_dir = Builder::new()
+            .prefix("test_output_ruby")
+            .tempdir()
+            .expect("Failed to create temporary directory");
+        temp_dir.path().to_path_buf()
+    }
+
+    fn verify_sdk_structure(output_dir: &Path) {
+        let lib_dir = output_dir.join("lib").join("xdk");
+        assert!(lib_dir.exists(), "lib/xdk directory should exist");
+        assert!(
+            lib_dir.join("client.rb").exists(),
+            "lib/xdk/client.rb should exist"
+        );
+        assert!(
+            lib_dir.join("version.rb").exists(),
+            "lib/xdk/version.rb should exist"
+        );
+        assert!(
+            output_dir.join("xdk.gemspec").exists(),
+            "xdk.gemspec should exist"
+        );
+        assert!(
+            output_dir.join("README.md").exists(),
+            "README.md should exist"
+        );
+    }
+
+    #[test]
+    fn test_simple_openapi() {
+        let output_dir = create_output_dir();
+        let _guard = OpenApiContextGuard::new();
+        let openapi = parse_json_file("../tests/openapi/simple.json").unwrap();
+        let result = generate(Ruby, &openapi, &output_dir, "0.0.1-test");
+        assert!(result.is_ok(), "Failed to generate SDK: {:?}", result);
+        verify_sdk_structure(&output_dir);
+    }
+
+    #[test]
+    fn test_version_in_generated_files() {
+        let output_dir = create_output_dir();
+        let _guard = OpenApiContextGuard::new();
+        let openapi = parse_json_file("../tests/openapi/simple.json").unwrap();
+
+        let test_version = "1.2.3-test";
+        let result = generate(Ruby, &openapi, &output_dir, test_version);
+        assert!(result.is_ok(), "Failed to generate SDK: {:?}", result);
+
+        let version_content = fs::read_to_string(output_dir.join("lib/xdk/version.rb"))
+            .expect("Failed to read version.rb");
+        assert!(
+            version_content.contains("1.2.3-test"),
+            "version.rb should contain the test version"
+        );
+    }
+}