kota 0.1.3

A lightweight, highly extensible ai code agent, built in Rust.
Documentation
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use crate::kota_code::context::{ContextManager, SerializableMessage};
use anyhow::Result;
use colored::*;

use super::command_registry::parse_command_input;
use super::KotaCli;

impl KotaCli {
    pub async fn handle_command(&mut self, input: &str) -> Result<bool> {
        match input {
            "/quit" | "/exit" => {
                return Ok(false);
            }
            "/config" => {
                self.show_config()?;
            }
            "/help" => {
                self.show_help()?;
            }
            "/history" => {
                self.show_history()?;
            }
            "/skills" => {
                self.list_skills()?;
            }
            _ if input.starts_with("/skill ") => {
                let skill_name = input.strip_prefix("/skill ").unwrap_or("").trim();
                self.activate_skill(skill_name)?;
            }
            "/skill-off" => {
                self.deactivate_skill()?;
            }
            _ if input.starts_with("/load ") => {
                let session_id = input.strip_prefix("/load ").unwrap_or("").trim();
                self.load_session(session_id)?;
            }
            _ if input.starts_with("/sessions") => {
                self.list_sessions()?;
            }
            _ if input.starts_with("/delete ") => {
                let session_id = input.strip_prefix("/delete ").unwrap_or("").trim();
                if !session_id.is_empty() {
                    self.delete_session(session_id)?;
                } else {
                    println!("{} Usage: /delete <session_id>", "".red());
                }
            }
            _ if input.starts_with('/') => {
                // Check if it's a custom command
                if let Some(ref registry) = self.command_registry {
                    let cmd_name = input
                        .strip_prefix('/')
                        .unwrap_or("")
                        .split_whitespace()
                        .next()
                        .unwrap_or("");

                    if registry.has_command(cmd_name) {
                        self.handle_custom_command(input).await?;
                        return Ok(true);
                    }
                }

                println!("{} Unknown command: {}", "".red(), input);
                println!("{} Type /help for available commands", "💡".bright_blue());
            }
            _ => {
                self.handle_ai_chat(input).await?;
            }
        }
        println!(); // 添加空行分隔
        Ok(true)
    }

    fn show_config(&self) -> Result<()> {
        println!("{}", "⚙️  Current Configuration:".bright_cyan());
        println!("  {} {}", "API Base:".bright_white(), self.api_base);
        println!("  {} {}", "Model:".bright_white(), self.model_name);
        println!(
            "  {} {}",
            "API Key:".bright_white(),
            "*".repeat(self.api_key.len().min(8))
        );
        println!();
        Ok(())
    }

    fn show_help(&self) -> Result<()> {
        println!("{}", "📚 Available Commands:".bright_cyan());
        println!();
        println!("  {} - Exit the application", "/quit".bright_green());
        println!(
            "  {} - Show current model configuration",
            "/config".bright_green()
        );
        println!(
            "  {} - Show conversation history",
            "/history".bright_green()
        );
        println!("  {} - List all available skills", "/skills".bright_green());
        println!(
            "  {} - Activate a specific skill",
            "/skill <name>".bright_green()
        );
        println!(
            "  {} - Deactivate current skill",
            "/skill-off".bright_green()
        );
        println!(
            "  {} - Load specific session",
            "/load <session_id>".bright_green()
        );
        println!("  {} - List all sessions", "/sessions".bright_green());
        println!(
            "  {} - Delete a specific session",
            "/delete <session_id>".bright_green()
        );
        println!("  {} - Show this help message", "/help".bright_green());

        // Show custom commands if available
        if let Some(ref registry) = self.command_registry {
            let custom_commands = registry.list_commands();
            if !custom_commands.is_empty() {
                println!();
                println!("{}", "🔧 Custom Commands:".bright_cyan());
                for cmd in custom_commands {
                    let cmd_type = registry.command_type(&cmd).unwrap_or("unknown");
                    println!(
                        "  {} ({})",
                        format!("/{}", cmd).bright_green(),
                        cmd_type.dimmed()
                    );
                }
            }
        }

        println!();
        println!(
            "{}",
            "💡 You can also type any message to chat with the AI!".bright_white()
        );
        println!(
            "{}",
            "⌨️  Press Tab after typing '/' to see available commands".bright_blue()
        );
        println!();
        Ok(())
    }

    fn show_history(&self) -> Result<()> {
        let context = self
            .agent_instance
            .context()
            .expect("Context manager not initialized");
        let messages = context.get_messages();
        if messages.is_empty() {
            println!(
                "{} No conversation history in current session",
                "📝".bright_blue()
            );
            println!("  Current session: {}", context.session_id().bright_white());
        } else {
            println!(
                "{} Conversation History (Session: {})",
                "📝".bright_blue(),
                context.session_id().bright_white()
            );
            println!();

            for (i, message) in messages.iter().enumerate() {
                let serializable = SerializableMessage::from(message);
                let role_color = match serializable.role.as_str() {
                    "user" => "👤 User".bright_cyan(),
                    "assistant" => "🤖 Assistant".bright_green(),
                    _ => "❓ Unknown".bright_yellow(),
                };

                println!("{}. {}", (i + 1).to_string().bright_white(), role_color);

                // 限制显示长度,避免输出过长
                let content = if serializable.content.chars().count() > 200 {
                    format!(
                        "{}...",
                        serializable.content.chars().take(200).collect::<String>()
                    )
                } else {
                    serializable.content
                };

                // 缩进显示内容
                for line in content.lines() {
                    println!("   {}", line);
                }
                println!();
            }

            println!("{} Total messages: {}", "📊".bright_blue(), messages.len());
        }
        println!();
        Ok(())
    }

    fn list_sessions(&self) -> Result<()> {
        let context = self
            .agent_instance
            .context()
            .expect("Context manager not initialized");
        match context.list_sessions() {
            Ok(sessions) => {
                if sessions.is_empty() {
                    println!("{} No saved sessions found", "📁".bright_blue());
                } else {
                    println!("{} Available Sessions:", "📁".bright_blue());
                    println!();

                    for (i, session) in sessions.iter().enumerate() {
                        let current_marker = if session.session_id == context.session_id() {
                            " (current)".bright_green()
                        } else {
                            "".normal()
                        };

                        println!(
                            "{}. {} - {} messages{}",
                            (i + 1).to_string().bright_white(),
                            session.session_id.bright_cyan(),
                            session.message_count.to_string().bright_yellow(),
                            current_marker
                        );
                        println!("   Last updated: {}", session.last_updated.dimmed());
                    }

                    println!();
                    println!(
                        "{} Use '/load <session_id>' to load a session",
                        "💡".bright_blue()
                    );
                }
            }
            Err(e) => {
                println!("{} Failed to list sessions: {}", "".red(), e);
            }
        }
        println!();
        Ok(())
    }

    fn load_session(&mut self, session_id: &str) -> Result<()> {
        let context = self
            .agent_instance
            .context_mut()
            .expect("Context manager not initialized");

        // 保存当前会话
        if let Err(e) = context.save() {
            println!(
                "{} Warning: Failed to save current session: {}",
                "⚠️".yellow(),
                e
            );
        }

        // 切换到新会话
        context.switch_session(session_id.to_string());

        match context.load() {
            Ok(true) => {
                println!(
                    "{} Successfully loaded session: {}",
                    "".bright_green(),
                    session_id.bright_cyan()
                );
                println!(
                    "   Messages loaded: {}",
                    context.get_messages().len().to_string().bright_yellow()
                );
            }
            Ok(false) => {
                println!(
                    "{} Session '{}' not found, created new session",
                    "📝".bright_blue(),
                    session_id.bright_cyan()
                );
            }
            Err(e) => {
                println!(
                    "{} Failed to load session '{}': {}",
                    "".red(),
                    session_id.bright_cyan(),
                    e
                );
            }
        }
        println!();
        Ok(())
    }

    fn delete_session(&mut self, session_id: &str) -> Result<()> {
        let context = self
            .agent_instance
            .context()
            .expect("Context manager not initialized");

        if session_id == context.session_id() {
            println!("{} Cannot delete current active session", "".red());
            println!("   Switch to another session first using '/load <session_id>'",);
            return Ok(());
        }

        // 创建临时上下文管理器来删除指定会话
        let temp_context = ContextManager::new("./.chat_sessions", session_id.to_string())?;

        match temp_context.delete_session() {
            Ok(true) => {
                println!(
                    "{} Successfully deleted session: {}",
                    "".bright_green(),
                    session_id.bright_cyan()
                );
            }
            Ok(false) => {
                println!(
                    "{} Session '{}' not found",
                    "".red(),
                    session_id.bright_cyan()
                );
            }
            Err(e) => {
                println!(
                    "{} Failed to delete session '{}': {}",
                    "".red(),
                    session_id.bright_cyan(),
                    e
                );
            }
        }
        println!();
        Ok(())
    }

    fn list_skills(&mut self) -> Result<()> {
        let skill_manager = self
            .agent_instance
            .skill_manager()
            .expect("Skill manager not initialized");
        let skills = skill_manager.list_skills();

        if skills.is_empty() {
            println!("{} No skills available", "🎯".bright_blue());
        } else {
            println!("{} Available Skills:", "🎯".bright_blue());
            println!();

            for (i, skill) in skills.iter().enumerate() {
                let active_marker = if skill_manager
                    .get_active_skill()
                    .map(|s| s.name == skill.name)
                    .unwrap_or(false)
                {
                    " (active)".bright_green()
                } else {
                    "".normal()
                };

                println!(
                    "{}. {}{}",
                    (i + 1).to_string().bright_white(),
                    skill.name.bright_cyan(),
                    active_marker
                );
                println!("   {}", skill.description.dimmed());
                println!();
            }

            println!(
                "{} Use '/skill <name>' to activate a skill",
                "💡".bright_blue()
            );
        }
        println!();
        Ok(())
    }

    fn activate_skill(&mut self, skill_name: &str) -> Result<()> {
        let skill_manager = self
            .agent_instance
            .skill_manager_mut()
            .expect("Skill manager not initialized");
        match skill_manager.activate_skill(skill_name) {
            Ok(_) => {
                println!(
                    "{} Activated skill: {}",
                    "".bright_green(),
                    skill_name.bright_cyan()
                );
                if let Some(skill) = skill_manager.get_skill(skill_name) {
                    println!("   {}", skill.description.dimmed());
                }
                println!(
                    "{} Skill will be applied to next message",
                    "💡".bright_blue()
                );
            }
            Err(e) => {
                println!("{} Failed to activate skill: {}", "".red(), e);
                println!(
                    "{} Use '/skills' to see available skills",
                    "💡".bright_blue()
                );
            }
        }
        println!();
        Ok(())
    }

    fn deactivate_skill(&mut self) -> Result<()> {
        let skill_manager = self
            .agent_instance
            .skill_manager_mut()
            .expect("Skill manager not initialized");
        skill_manager.deactivate_skill();
        println!("{} Skill deactivated", "".bright_green());
        println!();
        Ok(())
    }

    async fn handle_custom_command(&mut self, input: &str) -> Result<()> {
        let registry = self
            .command_registry
            .as_ref()
            .ok_or_else(|| anyhow::anyhow!("Command registry not initialized"))?;

        // Parse command input (remove leading /)
        let input_without_slash = input.strip_prefix('/').unwrap_or(input);
        let (cmd_name, args) = parse_command_input(input_without_slash)?;

        // Execute command to get prompt
        match registry.execute(&cmd_name, args.clone()) {
            Ok(prompt) => {
                println!(
                    "{} Executing custom command: {}",
                    "🔧".bright_blue(),
                    cmd_name.bright_cyan()
                );
                if !args.is_empty() {
                    println!("   Arguments: {:?}", args);
                }
                println!("   Prompt: {}", prompt.dimmed());
                println!();

                // Send prompt to AI
                self.handle_ai_chat(&prompt).await?;
            }
            Err(e) => {
                println!(
                    "{} Failed to execute command '{}': {}",
                    "".red(),
                    cmd_name,
                    e
                );
            }
        }

        Ok(())
    }

    async fn handle_ai_chat(&mut self, input: &str) -> Result<()> {
        println!("{}", "🧠 Thinking...".yellow());
        println!("{}", "● kota:".blue());

        let response_result = self.agent_instance.chat(input).await;

        println!();

        match response_result {
            Ok(resp) => {
                println!(
                    "{} Total tokens used: {}",
                    "📊".bright_blue(),
                    resp.usage().total_tokens
                );
            }
            Err(e) => {
                println!("{} Failed to get AI response: {}", "".red(), e);
                println!(
                    "{} Please check your API key and network connection",
                    "💡".bright_blue()
                );
            }
        }

        Ok(())
    }
}