//! Interactive CLI for Hero Supervisor OpenRPC Client
//!
//! This CLI provides an interactive interface to explore and test OpenRPC methods
//! with arrow key navigation, parameter input, and response display.

use clap::Parser;
use crossterm::{
    event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyCode, KeyEventKind},
    execute,
    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{
    backend::CrosstermBackend,
    layout::{Alignment, Constraint, Direction, Layout, Margin, Rect},
    style::{Color, Modifier, Style},
    text::{Line, Span, Text},
    widgets::{Block, Borders, List, ListItem, ListState, Paragraph, Wrap},
    Frame, Terminal,
};
use serde_json::json;
use std::io;
use chrono;

use hero_supervisor_openrpc_client::{SupervisorClient, RunnerConfig, RunnerType, ProcessManagerType};
use std::path::PathBuf;

#[derive(Parser)]
#[command(name = "openrpc-cli")]
#[command(about = "Interactive CLI for Hero Supervisor OpenRPC")]
struct Cli {
    /// OpenRPC server URL
    #[arg(short, long, default_value = "http://127.0.0.1:3030")]
    url: String,
}

#[derive(Debug, Clone)]
struct RpcMethod {
    name: String,
    description: String,
    params: Vec<RpcParam>,
}

#[derive(Debug, Clone)]
struct RpcParam {
    name: String,
    param_type: String,
    required: bool,
    description: String,
}

struct App {
    client: SupervisorClient,
    methods: Vec<RpcMethod>,
    list_state: ListState,
    current_screen: Screen,
    selected_method: Option<RpcMethod>,
    param_inputs: Vec<String>,
    current_param_index: usize,
    response: Option<String>,
    error_message: Option<String>,
}

#[derive(Debug, PartialEq)]
enum Screen {
    MethodList,
    ParamInput,
    Response,
}

impl App {
    async fn new(url: String) -> Result<Self, Box<dyn std::error::Error>> {
        let client = SupervisorClient::new(&url)?;
        
        // Test connection to OpenRPC server using the standard rpc.discover method
        // This is the proper OpenRPC way to test server connectivity and discover available methods
        let discovery_result = client.discover().await;
        match discovery_result {
            Ok(discovery_info) => {
                println!("✓ Connected to OpenRPC server at {}", url);
                if let Some(info) = discovery_info.get("info") {
                    if let Some(title) = info.get("title").and_then(|t| t.as_str()) {
                        println!("  Server: {}", title);
                    }
                    if let Some(version) = info.get("version").and_then(|v| v.as_str()) {
                        println!("  Version: {}", version);
                    }
                }
            }
            Err(e) => {
                return Err(format!("Failed to connect to OpenRPC server at {}: {}\nMake sure the supervisor is running with OpenRPC enabled.", url, e).into());
            }
        }
        
        let methods = vec![
            RpcMethod {
                name: "list_runners".to_string(),
                description: "List all registered runners".to_string(),
                params: vec![],
            },
            RpcMethod {
                name: "register_runner".to_string(),
                description: "Register a new runner to the supervisor with secret authentication".to_string(),
                params: vec![
                    RpcParam {
                        name: "secret".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "Secret required for runner registration".to_string(),
                    },
                    RpcParam {
                        name: "name".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "Name of the runner".to_string(),
                    },
                    RpcParam {
                        name: "queue".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "Queue name for the runner to listen to".to_string(),
                    },
                ],
            },
            RpcMethod {
                name: "run_job".to_string(),
                description: "Run a job on the appropriate runner".to_string(),
                params: vec![
                    RpcParam {
                        name: "secret".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "Secret required for job execution".to_string(),
                    },
                    RpcParam {
                        name: "job_id".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "Job ID".to_string(),
                    },
                    RpcParam {
                        name: "runner_name".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "Name of the runner to execute the job".to_string(),
                    },
                    RpcParam {
                        name: "payload".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "Job payload/script content".to_string(),
                    },
                ],
            },
            RpcMethod {
                name: "remove_runner".to_string(),
                description: "Remove a runner from the supervisor".to_string(),
                params: vec![
                    RpcParam {
                        name: "actor_id".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "ID of the runner to remove".to_string(),
                    },
                ],
            },
            RpcMethod {
                name: "start_runner".to_string(),
                description: "Start a specific runner".to_string(),
                params: vec![
                    RpcParam {
                        name: "actor_id".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "ID of the runner to start".to_string(),
                    },
                ],
            },
            RpcMethod {
                name: "stop_runner".to_string(),
                description: "Stop a specific runner".to_string(),
                params: vec![
                    RpcParam {
                        name: "actor_id".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "ID of the runner to stop".to_string(),
                    },
                    RpcParam {
                        name: "force".to_string(),
                        param_type: "bool".to_string(),
                        required: true,
                        description: "Whether to force stop the runner".to_string(),
                    },
                ],
            },
            RpcMethod {
                name: "get_runner_status".to_string(),
                description: "Get the status of a specific runner".to_string(),
                params: vec![
                    RpcParam {
                        name: "actor_id".to_string(),
                        param_type: "String".to_string(),
                        required: true,
                        description: "ID of the runner".to_string(),
                    },
                ],
            },
            RpcMethod {
                name: "get_all_runner_status".to_string(),
                description: "Get status of all runners".to_string(),
                params: vec![],
            },
            RpcMethod {
                name: "start_all".to_string(),
                description: "Start all runners".to_string(),
                params: vec![],
            },
            RpcMethod {
                name: "stop_all".to_string(),
                description: "Stop all runners".to_string(),
                params: vec![
                    RpcParam {
                        name: "force".to_string(),
                        param_type: "bool".to_string(),
                        required: true,
                        description: "Whether to force stop all runners".to_string(),
                    },
                ],
            },
            RpcMethod {
                name: "get_all_status".to_string(),
                description: "Get status of all components".to_string(),
                params: vec![],
            },
        ];

        let mut list_state = ListState::default();
        list_state.select(Some(0));

        Ok(App {
            client,
            methods,
            list_state,
            current_screen: Screen::MethodList,
            selected_method: None,
            param_inputs: vec![],
            current_param_index: 0,
            response: None,
            error_message: None,
        })
    }

    fn next_method(&mut self) {
        let i = match self.list_state.selected() {
            Some(i) => {
                if i >= self.methods.len() - 1 {
                    0
                } else {
                    i + 1
                }
            }
            None => 0,
        };
        self.list_state.select(Some(i));
    }

    fn previous_method(&mut self) {
        let i = match self.list_state.selected() {
            Some(i) => {
                if i == 0 {
                    self.methods.len() - 1
                } else {
                    i - 1
                }
            }
            None => 0,
        };
        self.list_state.select(Some(i));
    }

    fn select_method(&mut self) {
        if let Some(i) = self.list_state.selected() {
            let method = self.methods[i].clone();
            if method.params.is_empty() {
                // No parameters needed, call directly
                self.selected_method = Some(method);
                self.current_screen = Screen::Response;
            } else {
                // Parameters needed, go to input screen
                self.selected_method = Some(method.clone());
                self.param_inputs = vec!["".to_string(); method.params.len()];
                self.current_param_index = 0;
                self.current_screen = Screen::ParamInput;
            }
        }
    }

    fn next_param(&mut self) {
        if let Some(method) = &self.selected_method {
            if self.current_param_index < method.params.len() - 1 {
                self.current_param_index += 1;
            }
        }
    }

    fn previous_param(&mut self) {
        if self.current_param_index > 0 {
            self.current_param_index -= 1;
        }
    }

    fn add_char_to_current_param(&mut self, c: char) {
        if self.current_param_index < self.param_inputs.len() {
            self.param_inputs[self.current_param_index].push(c);
        }
    }

    fn remove_char_from_current_param(&mut self) {
        if self.current_param_index < self.param_inputs.len() {
            self.param_inputs[self.current_param_index].pop();
        }
    }

    async fn execute_method(&mut self) {
        if let Some(method) = &self.selected_method {
            self.error_message = None;
            self.response = None;

            // Build parameters
            let mut params = json!({});
            
            if !method.params.is_empty() {
                for (i, param) in method.params.iter().enumerate() {
                    let input = &self.param_inputs[i];
                    if input.is_empty() && param.required {
                        self.error_message = Some(format!("Required parameter '{}' is empty", param.name));
                        return;
                    }
                    
                    if !input.is_empty() {
                        let value = match param.param_type.as_str() {
                            "bool" => {
                                match input.to_lowercase().as_str() {
                                    "true" | "1" | "yes" => json!(true),
                                    "false" | "0" | "no" => json!(false),
                                    _ => {
                                        self.error_message = Some(format!("Invalid boolean value for '{}': {}", param.name, input));
                                        return;
                                    }
                                }
                            }
                            "i32" | "i64" | "u32" | "u64" => {
                                match input.parse::<i64>() {
                                    Ok(n) => json!(n),
                                    Err(_) => {
                                        self.error_message = Some(format!("Invalid number for '{}': {}", param.name, input));
                                        return;
                                    }
                                }
                            }
                            _ => json!(input),
                        };
                        
                        if method.name == "register_runner" {
                            // Special handling for register_runner method
                            match param.name.as_str() {
                                "secret" => params["secret"] = value,
                                "name" => params["name"] = value,
                                "queue" => params["queue"] = value,
                                _ => {}
                            }
                        } else if method.name == "run_job" {
                            // Special handling for run_job method
                            match param.name.as_str() {
                                "secret" => params["secret"] = value,
                                "job_id" => params["job_id"] = value,
                                "runner_name" => params["runner_name"] = value,
                                "payload" => params["payload"] = value,
                                _ => {}
                            }
                        } else {
                            params[&param.name] = value;
                        }
                    }
                }
            }

            // Execute the method
            let result: Result<serde_json::Value, hero_supervisor_openrpc_client::ClientError> = match method.name.as_str() {
                "list_runners" => {
                    match self.client.list_runners().await {
                        Ok(response) => {
                            match serde_json::to_value(response) {
                                Ok(value) => Ok(value),
                                Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                            }
                        },
                        Err(e) => Err(e),
                    }
                }
                "get_all_runner_status" => {
                    match self.client.get_all_runner_status().await {
                        Ok(response) => {
                            match serde_json::to_value(response) {
                                Ok(value) => Ok(value),
                                Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                            }
                        },
                        Err(e) => Err(e),
                    }
                }
                "start_all" => {
                    match self.client.start_all().await {
                        Ok(response) => {
                            match serde_json::to_value(response) {
                                Ok(value) => Ok(value),
                                Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                            }
                        },
                        Err(e) => Err(e),
                    }
                }
                "get_all_status" => {
                    match self.client.get_all_status().await {
                        Ok(response) => {
                            match serde_json::to_value(response) {
                                Ok(value) => Ok(value),
                                Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                            }
                        },
                        Err(e) => Err(e),
                    }
                }
                "stop_all" => {
                    let force = params.get("force").and_then(|v| v.as_bool()).unwrap_or(false);
                    match self.client.stop_all(force).await {
                        Ok(response) => {
                            match serde_json::to_value(response) {
                                Ok(value) => Ok(value),
                                Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                            }
                        },
                        Err(e) => Err(e),
                    }
                }
                "start_runner" => {
                    if let Some(actor_id) = params.get("actor_id").and_then(|v| v.as_str()) {
                        match self.client.start_runner(actor_id).await {
                            Ok(response) => {
                                match serde_json::to_value(response) {
                                    Ok(value) => Ok(value),
                                    Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                                }
                            },
                            Err(e) => Err(e),
                        }
                    } else {
                        Err(hero_supervisor_openrpc_client::ClientError::from(
                            serde_json::Error::io(std::io::Error::new(std::io::ErrorKind::InvalidInput, "Missing actor_id parameter"))
                        ))
                    }
                }
                "stop_runner" => {
                    if let (Some(actor_id), Some(force)) = (
                        params.get("actor_id").and_then(|v| v.as_str()),
                        params.get("force").and_then(|v| v.as_bool())
                    ) {
                        match self.client.stop_runner(actor_id, force).await {
                            Ok(response) => {
                                match serde_json::to_value(response) {
                                    Ok(value) => Ok(value),
                                    Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                                }
                            },
                            Err(e) => Err(e),
                        }
                    } else {
                        Err(hero_supervisor_openrpc_client::ClientError::from(
                            serde_json::Error::io(std::io::Error::new(std::io::ErrorKind::InvalidInput, "Missing parameters"))
                        ))
                    }
                }
                "remove_runner" => {
                    if let Some(actor_id) = params.get("actor_id").and_then(|v| v.as_str()) {
                        match self.client.remove_runner(actor_id).await {
                            Ok(response) => {
                                match serde_json::to_value(response) {
                                    Ok(value) => Ok(value),
                                    Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                                }
                            },
                            Err(e) => Err(e),
                        }
                    } else {
                        Err(hero_supervisor_openrpc_client::ClientError::from(
                            serde_json::Error::io(std::io::Error::new(std::io::ErrorKind::InvalidInput, "Missing actor_id parameter"))
                        ))
                    }
                }
                "get_runner_status" => {
                    if let Some(actor_id) = params.get("actor_id").and_then(|v| v.as_str()) {
                        match self.client.get_runner_status(actor_id).await {
                            Ok(response) => {
                                match serde_json::to_value(response) {
                                    Ok(value) => Ok(value),
                                    Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                                }
                            },
                            Err(e) => Err(e),
                        }
                    } else {
                        Err(hero_supervisor_openrpc_client::ClientError::from(
                            serde_json::Error::io(std::io::Error::new(std::io::ErrorKind::InvalidInput, "Missing actor_id parameter"))
                        ))
                    }
                }
                "register_runner" => {
                    if let (Some(secret), Some(name), Some(queue)) = (
                        params.get("secret").and_then(|v| v.as_str()),
                        params.get("name").and_then(|v| v.as_str()),
                        params.get("queue").and_then(|v| v.as_str())
                    ) {
                        match self.client.register_runner(secret, name, queue).await {
                            Ok(response) => {
                                match serde_json::to_value(response) {
                                    Ok(value) => Ok(value),
                                    Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                                }
                            },
                            Err(e) => Err(e),
                        }
                    } else {
                        Err(hero_supervisor_openrpc_client::ClientError::from(
                            serde_json::Error::io(std::io::Error::new(std::io::ErrorKind::InvalidInput, "Missing required parameters: secret, name, queue"))
                        ))
                    }
                }
                "run_job" => {
                    if let (Some(secret), Some(job_id), Some(runner_name), Some(payload)) = (
                        params.get("secret").and_then(|v| v.as_str()),
                        params.get("job_id").and_then(|v| v.as_str()),
                        params.get("runner_name").and_then(|v| v.as_str()),
                        params.get("payload").and_then(|v| v.as_str())
                    ) {
                        // Create a job object
                        let job = serde_json::json!({
                            "id": job_id,
                            "caller_id": "cli_user",
                            "context_id": "cli_context",
                            "payload": payload,
                            "job_type": "SAL",
                            "runner_name": runner_name,
                            "timeout": 30000000000u64, // 30 seconds in nanoseconds
                            "env_vars": {},
                            "created_at": chrono::Utc::now().to_rfc3339(),
                            "updated_at": chrono::Utc::now().to_rfc3339()
                        });
                        
                        match self.client.run_job(secret, job).await {
                            Ok(response) => {
                                match serde_json::to_value(response) {
                                    Ok(value) => Ok(value),
                                    Err(e) => Err(hero_supervisor_openrpc_client::ClientError::from(e)),
                                }
                            },
                            Err(e) => Err(e),
                        }
                    } else {
                        Err(hero_supervisor_openrpc_client::ClientError::from(
                            serde_json::Error::io(std::io::Error::new(std::io::ErrorKind::InvalidInput, "Missing required parameters: secret, job_id, runner_name, payload"))
                        ))
                    }
                }
                _ => Err(hero_supervisor_openrpc_client::ClientError::from(
                    serde_json::Error::io(std::io::Error::new(std::io::ErrorKind::InvalidInput, "Method not implemented in CLI"))
                )),
            };

            match result {
                Ok(response) => {
                    self.response = Some(format!("{:#}", response));
                }
                Err(e) => {
                    self.error_message = Some(format!("Error: {}", e));
                }
            }

            self.current_screen = Screen::Response;
        }
    }

    fn back_to_methods(&mut self) {
        self.current_screen = Screen::MethodList;
        self.selected_method = None;
        self.param_inputs.clear();
        self.current_param_index = 0;
        self.response = None;
        self.error_message = None;
    }
}

fn ui(f: &mut Frame, app: &mut App) {
    match app.current_screen {
        Screen::MethodList => draw_method_list(f, app),
        Screen::ParamInput => draw_param_input(f, app),
        Screen::Response => draw_response(f, app),
    }
}

fn draw_method_list(f: &mut Frame, app: &mut App) {
    let chunks = Layout::default()
        .direction(Direction::Vertical)
        .margin(1)
        .constraints([Constraint::Min(0)].as_ref())
        .split(f.area());

    let items: Vec<ListItem> = app
        .methods
        .iter()
        .map(|method| {
            let content = vec![Line::from(vec![
                Span::styled(&method.name, Style::default().fg(Color::Yellow)),
                Span::raw(" - "),
                Span::raw(&method.description),
            ])];
            ListItem::new(content)
        })
        .collect();

    let items = List::new(items)
        .block(
            Block::default()
                .borders(Borders::ALL)
                .title("OpenRPC Methods (↑↓ to navigate, Enter to select, q to quit)"),
        )
        .highlight_style(
            Style::default()
                .bg(Color::LightGreen)
                .fg(Color::Black)
                .add_modifier(Modifier::BOLD),
        )
        .highlight_symbol(">> ");

    f.render_stateful_widget(items, chunks[0], &mut app.list_state);
}

fn draw_param_input(f: &mut Frame, app: &mut App) {
    if let Some(method) = &app.selected_method {
        let chunks = Layout::default()
            .direction(Direction::Vertical)
            .margin(1)
            .constraints([
                Constraint::Length(3),
                Constraint::Min(0),
                Constraint::Length(3),
            ])
            .split(f.area());

        // Title
        let title = Paragraph::new(format!("Parameters for: {}", method.name))
            .block(Block::default().borders(Borders::ALL).title("Method"));
        f.render_widget(title, chunks[0]);

        // Parameters - create proper form layout with separate label and input areas
        let param_chunks = Layout::default()
            .direction(Direction::Vertical)
            .constraints(vec![Constraint::Length(5); method.params.len()])
            .split(chunks[1]);

        for (i, param) in method.params.iter().enumerate() {
            let is_current = i == app.current_param_index;
            
            // Split each parameter into label and input areas
            let param_layout = Layout::default()
                .direction(Direction::Vertical)
                .constraints([Constraint::Length(2), Constraint::Length(3)])
                .split(param_chunks[i]);

            // Parameter label and description
            let label_style = if is_current {
                Style::default().fg(Color::Yellow).add_modifier(Modifier::BOLD)
            } else {
                Style::default().fg(Color::White)
            };

            let label_text = vec![
                Line::from(vec![
                    Span::styled(&param.name, label_style),
                    Span::raw(if param.required { " (required)" } else { " (optional)" }),
                    Span::raw(format!(" [{}]", param.param_type)),
                ]),
                Line::from(Span::styled(&param.description, Style::default().fg(Color::Gray))),
            ];

            let label_widget = Paragraph::new(label_text)
                .block(Block::default().borders(Borders::NONE));
            f.render_widget(label_widget, param_layout[0]);

            // Input field
            let empty_string = String::new();
            let input_value = app.param_inputs.get(i).unwrap_or(&empty_string);
            
            let input_display = if is_current {
                if input_value.is_empty() {
                    "█".to_string() // Show cursor when active and empty
                } else {
                    format!("{}█", input_value) // Show cursor at end when active
                }
            } else {
                if input_value.is_empty() {
                    " ".to_string() // Empty space for inactive empty fields
                } else {
                    input_value.clone()
                }
            };

            let input_style = if is_current {
                Style::default().fg(Color::Black).bg(Color::Cyan)
            } else {
                Style::default().fg(Color::White).bg(Color::DarkGray)
            };

            let border_style = if is_current {
                Style::default().fg(Color::Green).add_modifier(Modifier::BOLD)
            } else {
                Style::default().fg(Color::Gray)
            };

            let input_widget = Paragraph::new(Line::from(Span::styled(input_display, input_style)))
                .block(
                    Block::default()
                        .borders(Borders::ALL)
                        .border_style(border_style)
                        .title(if is_current { " INPUT " } else { "" }),
                );

            f.render_widget(input_widget, param_layout[1]);
        }

        // Instructions
        let instructions = Paragraph::new("↑↓ to navigate params, type to edit, Enter to execute, Esc to go back")
            .block(Block::default().borders(Borders::ALL).title("Instructions"));
        f.render_widget(instructions, chunks[2]);
    }
}

fn draw_response(f: &mut Frame, app: &mut App) {
    let chunks = Layout::default()
        .direction(Direction::Vertical)
        .margin(1)
        .constraints([
            Constraint::Length(3),
            Constraint::Min(0),
            Constraint::Length(3),
        ])
        .split(f.area());

    // Title
    let method_name = app.selected_method.as_ref().map(|m| m.name.as_str()).unwrap_or("Unknown");
    let title = Paragraph::new(format!("Response for: {}", method_name))
        .block(Block::default().borders(Borders::ALL).title("Response"));
    f.render_widget(title, chunks[0]);

    // Response content
    let content = if let Some(error) = &app.error_message {
        Text::from(error.clone()).style(Style::default().fg(Color::Red))
    } else if let Some(response) = &app.response {
        Text::from(response.clone()).style(Style::default().fg(Color::Green))
    } else {
        Text::from("Executing...").style(Style::default().fg(Color::Yellow))
    };

    let response_widget = Paragraph::new(content)
        .block(Block::default().borders(Borders::ALL))
        .wrap(Wrap { trim: true });
    f.render_widget(response_widget, chunks[1]);

    // Instructions
    let instructions = Paragraph::new("Esc to go back to methods")
        .block(Block::default().borders(Borders::ALL).title("Instructions"));
    f.render_widget(instructions, chunks[2]);
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let cli = Cli::parse();

    // Setup terminal
    enable_raw_mode()?;
    let mut stdout = io::stdout();
    execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
    let backend = CrosstermBackend::new(stdout);
    let mut terminal = Terminal::new(backend)?;

    // Create app
    let mut app = match App::new(cli.url).await {
        Ok(app) => app,
        Err(e) => {
            // Cleanup terminal before showing error
            disable_raw_mode()?;
            execute!(
                terminal.backend_mut(),
                LeaveAlternateScreen,
                DisableMouseCapture
            )?;
            terminal.show_cursor()?;
            
            eprintln!("Failed to connect to OpenRPC server: {}", e);
            eprintln!("Make sure the supervisor is running with OpenRPC enabled.");
            std::process::exit(1);
        }
    };

    // Main loop
    loop {
        terminal.draw(|f| ui(f, &mut app))?;

        if let Event::Key(key) = event::read()? {
            if key.kind == KeyEventKind::Press {
                match app.current_screen {
                    Screen::MethodList => {
                        match key.code {
                            KeyCode::Char('q') => break,
                            KeyCode::Down => app.next_method(),
                            KeyCode::Up => app.previous_method(),
                            KeyCode::Enter => {
                                app.select_method();
                                // If the selected method has no parameters, execute it immediately
                                if let Some(method) = &app.selected_method {
                                    if method.params.is_empty() {
                                        app.execute_method().await;
                                    }
                                }
                            },
                            _ => {}
                        }
                    }
                    Screen::ParamInput => {
                        match key.code {
                            KeyCode::Esc => app.back_to_methods(),
                            KeyCode::Up => app.previous_param(),
                            KeyCode::Down => app.next_param(),
                            KeyCode::Enter => {
                                app.execute_method().await;
                            }
                            KeyCode::Backspace => app.remove_char_from_current_param(),
                            KeyCode::Char(c) => app.add_char_to_current_param(c),
                            _ => {}
                        }
                    }
                    Screen::Response => {
                        match key.code {
                            KeyCode::Esc => app.back_to_methods(),
                            _ => {}
                        }
                    }
                }
            }
        }
    }

    // Restore terminal
    disable_raw_mode()?;
    execute!(
        terminal.backend_mut(),
        LeaveAlternateScreen,
        DisableMouseCapture
    )?;
    terminal.show_cursor()?;

    Ok(())
}