//! Console panel for displaying output and error messages
//!
//! Shows a scrollable log of messages with color coding.

use eframe::egui;

use crate::gui::state::{GuiState, MessageKind};

/// Console panel for output messages
pub struct ConsolePanel {
    /// Whether to auto-scroll to bottom
    auto_scroll: bool,
}

impl ConsolePanel {
    pub fn new() -> Self {
        Self { auto_scroll: true }
    }

    pub fn show(&mut self, ui: &mut egui::Ui, state: &mut GuiState) {
        // Header with title and buttons
        ui.horizontal(|ui| {
            ui.heading("Console");

            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
                if ui.button("Clear").clicked() {
                    state.clear_console();
                }

                ui.checkbox(&mut self.auto_scroll, "Auto-scroll");

                ui.label(format!("{} messages", state.console_messages.len()));
            });
        });

        ui.separator();

        // Scrollable message area
        let scroll_area = egui::ScrollArea::vertical()
            .auto_shrink([false, false])
            .stick_to_bottom(self.auto_scroll);

        scroll_area.show(ui, |ui| {
            if state.console_messages.is_empty() {
                ui.label("(no messages)");
            } else {
                for message in &state.console_messages {
                    let color = match message.kind {
                        MessageKind::Info => egui::Color32::LIGHT_GRAY,
                        MessageKind::Success => egui::Color32::from_rgb(100, 200, 100),
                        MessageKind::Error => egui::Color32::from_rgb(255, 100, 100),
                        MessageKind::Warning => egui::Color32::from_rgb(255, 200, 100),
                    };

                    let prefix = match message.kind {
                        MessageKind::Info => ">",
                        MessageKind::Success => "+",
                        MessageKind::Error => "!",
                        MessageKind::Warning => "?",
                    };

                    ui.horizontal(|ui| {
                        ui.label(
                            egui::RichText::new(prefix)
                                .color(color)
                                .monospace(),
                        );
                        ui.label(
                            egui::RichText::new(&message.text)
                                .color(color)
                                .monospace(),
                        );
                    });
                }
            }
        });
    }
}

impl Default for ConsolePanel {
    fn default() -> Self {
        Self::new()
    }
}