// src/components/handlers/sidebar.rs
use ratatui::{
    widgets::{Block, List, ListItem},
    layout::{Rect, Direction, Layout, Constraint},
    style::Style,
    Frame,
};
use crate::config::colors::themes::Theme;
use common::proto::multieko2::table_definition::{ProfileTreeResponse};
use ratatui::text::{Span, Line};

const SIDEBAR_WIDTH: u16 = 16;

pub fn calculate_sidebar_layout(show_sidebar: bool, main_content_area: Rect) -> (Option<Rect>, Rect) {
    if show_sidebar {
        let chunks = Layout::default()
            .direction(Direction::Horizontal)
            .constraints([
                Constraint::Length(SIDEBAR_WIDTH),
                Constraint::Min(0),
            ])
            .split(main_content_area);
        (Some(chunks[0]), chunks[1])
    } else {
        (None, main_content_area)
    }
}

pub fn render_sidebar(
    f: &mut Frame,
    area: Rect,
    theme: &Theme,
    profile_tree: &ProfileTreeResponse,
    selected_profile: &Option<String>,
) {
    let sidebar_block = Block::default().style(Style::default().bg(theme.bg));
    let mut items = Vec::new();

    if let Some(profile_name) = selected_profile {
        if let Some(profile) = profile_tree.profiles.iter()
            .find(|p| &p.name == profile_name)
        {
            // Profile header
            items.push(ListItem::new(Line::from(vec![
                Span::styled("📁 ", Style::default().fg(theme.accent)),
                Span::styled(&profile.name, Style::default().fg(theme.highlight)),
            ])));

            // Tables
            for (table_idx, table) in profile.tables.iter().enumerate() {
                let is_last = table_idx == profile.tables.len() - 1;
                let prefix = if is_last { "└─ " } else { "├─ " };

                let mut line = vec![
                    Span::styled(format!("  {}", prefix), Style::default().fg(theme.fg)),
                    Span::styled(&table.name, Style::default().fg(theme.fg)),
                ];

                if !table.depends_on.is_empty() {
                    line.push(Span::styled(
                        format!(" → {}", table.depends_on.join(", ")),
                        Style::default().fg(theme.secondary)
                    ));
                }

                items.push(ListItem::new(Line::from(line)));
            }
        }
    } else {
        items.push(ListItem::new(Span::styled(
            "No profile selected",
            Style::default().fg(theme.secondary)
        )));
    }

    let list = List::new(items)
        .block(sidebar_block)
        .highlight_style(Style::default().fg(theme.highlight))
        .highlight_symbol(">>");

    f.render_widget(list, area);
}