kowalski-code-agent 0.5.0

use crate::config::CodeAgentConfig;
use crate::error::CodeAgentError;
use crate::parser::CodeParser;
use std::collections::HashMap;
use tree_sitter::{Node, Tree};

/// A code refactoring tool that performs various refactoring operations
pub struct CodeRefactorer {
    parser: CodeParser,
    config: CodeAgentConfig,
    changes: HashMap<String, String>,
}

impl CodeRefactorer {
    /// Creates a new code refactorer with the specified configuration
    pub fn new(config: CodeAgentConfig) -> Result<Self, CodeAgentError> {
        let parser = CodeParser::new(config.clone())?;

        Ok(Self {
            parser,
            config,
            changes: HashMap::new(),
        })
    }

    /// Refactors a file at the given path
    pub fn refactor_file(&mut self, path: &str) -> Result<(), CodeAgentError> {
        self.parser.parse_file(path.as_ref())?;
        let tree = self
            .parser
            .parser_mut()
            .parse(path, None)
            .ok_or_else(|| CodeAgentError::Parser("Failed to parse file".to_string()))?;
        self.refactor_tree(&tree)
    }

    /// Refactors a string of code
    pub fn refactor_content(&mut self, content: &str) -> Result<(), CodeAgentError> {
        self.parser.parse_content(content)?;
        let tree = self
            .parser
            .parser_mut()
            .parse(content.as_bytes(), None)
            .ok_or_else(|| CodeAgentError::Parser("Failed to parse content".to_string()))?;
        self.refactor_tree(&tree)
    }

    /// Refactors a syntax tree
    fn refactor_tree(&mut self, tree: &Tree) -> Result<(), CodeAgentError> {
        let root_node = tree.root_node();

        if self.config.enable_optimization {
            self.optimize_code(&root_node)?;
        }

        if self.config.enable_quality {
            self.improve_quality(&root_node)?;
        }

        if self.config.enable_maintainability {
            self.improve_maintainability(&root_node)?;
        }

        Ok(())
    }

    /// Optimizes code
    fn optimize_code(&mut self, node: &Node) -> Result<(), CodeAgentError> {
        // Implement code optimization logic
        Ok(())
    }

    /// Improves code quality
    fn improve_quality(&mut self, node: &Node) -> Result<(), CodeAgentError> {
        // Implement code quality improvement logic
        Ok(())
    }

    /// Improves code maintainability
    fn improve_maintainability(&mut self, node: &Node) -> Result<(), CodeAgentError> {
        // Implement code maintainability improvement logic
        Ok(())
    }

    /// Extracts a method from the given node
    pub fn extract_method(&mut self, node: &Node, name: &str) -> Result<(), CodeAgentError> {
        // Implement method extraction logic
        Ok(())
    }

    /// Renames a symbol
    pub fn rename_symbol(&mut self, node: &Node, new_name: &str) -> Result<(), CodeAgentError> {
        // Implement symbol renaming logic
        Ok(())
    }

    /// Moves a method to a different class
    pub fn move_method(&mut self, node: &Node, target_class: &str) -> Result<(), CodeAgentError> {
        // Implement method moving logic
        Ok(())
    }

    /// Inlines a method
    pub fn inline_method(&mut self, node: &Node) -> Result<(), CodeAgentError> {
        // Implement method inlining logic
        Ok(())
    }

    /// Gets the changes made during refactoring
    pub fn changes(&self) -> &HashMap<String, String> {
        &self.changes
    }

    /// Gets a mutable reference to the changes made during refactoring
    pub fn changes_mut(&mut self) -> &mut HashMap<String, String> {
        &mut self.changes
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_refactorer_creation() {
        let config = CodeAgentConfig::default();
        let refactorer = CodeRefactorer::new(config);
        assert!(refactorer.is_ok());
    }

    #[test]
    fn test_refactor_content() {
        let config = CodeAgentConfig::default();
        let mut refactorer = CodeRefactorer::new(config).unwrap();
        let result = refactorer.refactor_content("fn main() { println!(\"Hello, world!\"); }");
        assert!(result.is_ok());
    }
}