use crate::cmd::console::views::common_styles;
use crate::cmd::console::widgets::formatters::truncate_right;
use hotpath::json::JsonFunctionTimingLogsList;
use ratatui::{
    layout::{Constraint, Rect},
    style::{Color, Modifier, Style},
    symbols::border,
    text::{Line, Span},
    widgets::{Block, Cell, HighlightSpacing, List, ListItem, Row, Table, TableState},
    Frame,
};

#[allow(clippy::too_many_arguments)]
pub(crate) fn render_function_logs_panel(
    current_function_logs: Option<&JsonFunctionTimingLogsList>,
    selected_function_name: Option<&str>,
    area: Rect,
    frame: &mut Frame,
    table_state: &mut TableState,
    is_focused: bool,
) {
    let title_style = Style::default()
        .fg(Color::Magenta)
        .add_modifier(Modifier::BOLD);

    let title = if let Some(function_logs) = current_function_logs {
        let has_missing_log = function_logs.logs.iter().any(|e| e.result.is_none());
        if has_missing_log {
            Line::from(vec![
                Span::styled(format!(" {} ", function_logs.function_name), title_style),
                Span::styled(
                    "(missing \"log = true\") ",
                    Style::default().fg(Color::DarkGray),
                ),
            ])
        } else {
            Line::from(Span::styled(
                format!(" {} ", function_logs.function_name),
                title_style,
            ))
        }
    } else if selected_function_name.is_some() {
        Line::from(Span::styled(" Loading... ", title_style))
    } else {
        Line::from(Span::styled(" Recent Logs ", title_style))
    };

    let border_set = if is_focused {
        border::THICK
    } else {
        border::PLAIN
    };

    let block = Block::bordered()
        .border_set(border_set)
        .border_style(if is_focused {
            Style::default()
        } else {
            common_styles::UNFOCUSED_BORDER_STYLE
        })
        .title(title);

    // Fixed columns: Index(7) + Timing(12) + Ago(12) + TID(10) + spacing(8) + borders(2) + highlight(3) = 54
    let inner_width = area.width.saturating_sub(2);
    let fixed_width: u16 = 7 + 12 + 12 + 10 + 8 + 3;
    let result_width = (inner_width.saturating_sub(fixed_width) as usize).max(20);

    if let Some(function_logs_data) = current_function_logs {
        let header_style = common_styles::TITLE_STYLE_YELLOW;
        let headers = Row::new(vec![
            Cell::from("Index").style(header_style),
            Cell::from("Timing").style(header_style),
            Cell::from("Ago").style(header_style),
            Cell::from("TID").style(header_style),
            Cell::from("Return").style(header_style),
        ]);

        let rows: Vec<Row> = function_logs_data
            .logs
            .iter()
            .map(|entry| {
                let result_str = entry.result.as_deref().unwrap_or("N/A");
                let result_truncated = truncate_right(result_str, result_width);

                Row::new(vec![
                    Cell::from(entry.invocation.to_string()),
                    Cell::from(entry.duration.clone()),
                    Cell::from(entry.ago.clone()),
                    Cell::from(entry.thread_id.map_or("N/A".to_string(), |t| t.to_string())),
                    Cell::from(result_truncated),
                ])
            })
            .collect();

        let widths = [
            Constraint::Length(7),
            Constraint::Length(12),
            Constraint::Length(12),
            Constraint::Length(10),
            Constraint::Min(20),
        ]
        .as_slice();

        let table = Table::new(rows, widths)
            .header(headers)
            .block(block)
            .column_spacing(2)
            .row_highlight_style(common_styles::SELECTED_ROW_STYLE)
            .highlight_symbol(">> ")
            .highlight_spacing(HighlightSpacing::Always);

        frame.render_stateful_widget(table, area, table_state);
    } else if selected_function_name.is_some() {
        let items = vec![
            ListItem::new(Line::from("")),
            ListItem::new(Line::from(Span::styled(
                "  Loading logs...",
                Style::default().fg(Color::Gray),
            ))),
        ];
        let list = List::new(items).block(block);
        frame.render_widget(list, area);
    } else {
        let items = vec![
            ListItem::new(Line::from("")),
            ListItem::new(Line::from(Span::styled(
                "  No function selected",
                Style::default().fg(Color::Gray),
            ))),
            ListItem::new(Line::from("")),
            ListItem::new(Line::from(Span::styled(
                "  Navigate the function list to see logs.",
                Style::default().fg(Color::DarkGray),
            ))),
        ];
        let list = List::new(items).block(block);
        frame.render_widget(list, area);
    }
}
