// src/client/terminal.rs
use crossterm::event::{self, Event};
use crossterm::{
    execute,
    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use crossterm::cursor::{SetCursorStyle, EnableBlinking};
use ratatui::{backend::CrosstermBackend, Terminal};
use std::io::{self, stdout};
use tonic::transport::Channel;

// Import the correct clients and proto messages from their respective modules
use common::proto::multieko2::adresar::adresar_client::AdresarClient;
use common::proto::multieko2::adresar::{AdresarResponse, PostAdresarRequest, PutAdresarRequest};
use common::proto::multieko2::common::{CountResponse, PositionRequest, Empty};
use common::proto::multieko2::table_structure::table_structure_service_client::TableStructureServiceClient;
use common::proto::multieko2::table_structure::TableStructureResponse;

pub struct AppTerminal {
    terminal: Terminal<CrosstermBackend<io::Stdout>>,
    adresar_client: AdresarClient<Channel>,
    table_structure_client: TableStructureServiceClient<Channel>,
}

impl AppTerminal {
    pub fn set_cursor_style(
        &mut self,
        style: SetCursorStyle,
    ) -> Result<(), Box<dyn std::error::Error>> {
        execute!(
            self.terminal.backend_mut(),
            style,
            EnableBlinking,
        )?;
        Ok(())
    }

    pub async fn new() -> Result<Self, Box<dyn std::error::Error>> {
        enable_raw_mode()?;
        let mut stdout = stdout();
        execute!(
            stdout,
            EnterAlternateScreen,
            SetCursorStyle::SteadyBlock
        )?;
        let backend = CrosstermBackend::new(stdout);
        let terminal = Terminal::new(backend)?;

        // Initialize both gRPC clients
        let adresar_client = AdresarClient::connect("http://[::1]:50051").await?;
        let table_structure_client = TableStructureServiceClient::connect("http://[::1]:50051").await?;

        Ok(Self { terminal, adresar_client, table_structure_client })
    }

    pub fn draw<F>(&mut self, f: F) -> Result<(), Box<dyn std::error::Error>>
    where
        F: FnOnce(&mut ratatui::Frame),
    {
        self.terminal.draw(f)?;
        Ok(())
    }

    pub fn read_event(&self) -> Result<Event, Box<dyn std::error::Error>> {
        Ok(event::read()?)
    }

    pub fn cleanup(&mut self) -> Result<(), Box<dyn std::error::Error>> {
        disable_raw_mode()?;
        execute!(self.terminal.backend_mut(), LeaveAlternateScreen)?;
        Ok(())
    }

    pub async fn handle_command(
        &mut self,
        action: &str,
        is_saved: &mut bool,
    ) -> Result<(bool, String), Box<dyn std::error::Error>> {
        match action {
            "quit" => {
                if *is_saved {
                    self.cleanup()?;
                    Ok((true, "Exiting.".to_string()))
                } else {
                    Ok((false, "No changes saved. Use :q! to force quit.".to_string()))
                }
            }
            "force_quit" => {
                self.cleanup()?;
                Ok((true, "Force exiting without saving.".to_string()))
            }
            "save_and_quit" => {
                *is_saved = true;
                self.cleanup()?;
                Ok((true, "State saved. Exiting.".to_string()))
            }
            _ => Ok((false, format!("Action not recognized: {}", action))),
        }
    }


    // Adresar service methods use adresar_client
    pub async fn get_adresar_count(&mut self) -> Result<u64, Box<dyn std::error::Error>> {
        let request = tonic::Request::new(Empty::default());
        let response: CountResponse = self.adresar_client.get_adresar_count(request).await?.into_inner();
        Ok(response.count as u64)
    }

    pub async fn get_adresar_by_position(&mut self, position: u64) -> Result<AdresarResponse, Box<dyn std::error::Error>> {
        let request = tonic::Request::new(PositionRequest { position: position as i64 });
        let response: AdresarResponse = self.adresar_client.get_adresar_by_position(request).await?.into_inner();
        Ok(response)
    }

    pub async fn post_adresar(
        &mut self,
        request: PostAdresarRequest,
    ) -> Result<tonic::Response<AdresarResponse>, Box<dyn std::error::Error>> {
        let request = tonic::Request::new(request);
        let response = self.adresar_client.post_adresar(request).await?;
        Ok(response)
    }

    pub async fn put_adresar(
        &mut self,
        request: PutAdresarRequest,
    ) -> Result<tonic::Response<AdresarResponse>, Box<dyn std::error::Error>> {
        let request = tonic::Request::new(request);
        let response = self.adresar_client.put_adresar(request).await?;
        Ok(response)
    }

    // Table structure method uses table_structure_client
    pub async fn get_table_structure(
        &mut self,
    ) -> Result<TableStructureResponse, Box<dyn std::error::Error>> {
        let request = tonic::Request::new(Empty::default());
        let response = self.table_structure_client
            .get_adresar_table_structure(request)
            .await?;
        Ok(response.into_inner())
    }
}