use crate::app::EncodingSettings;
use eframe::egui;

pub struct Settings;

impl Settings {
    pub fn new() -> Self {
        Self
    }

    pub fn show(&mut self, ui: &mut egui::Ui, settings: &mut EncodingSettings) {
        ui.heading("Encoding Settings");
        ui.add_space(12.0);

        // Quality slider
        ui.horizontal(|ui| {
            ui.label("Quality:");
            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
                ui.label(format!("{}", settings.quality));
            });
        });
        let quality_slider = egui::Slider::new(&mut settings.quality, 0..=100)
            .show_value(false);
        ui.add(quality_slider);
        ui.add_space(4.0);
        ui.label(
            egui::RichText::new("0 = smallest file, 100 = best quality")
                .small()
                .weak(),
        );

        ui.add_space(12.0);

        // Alpha quality slider
        ui.horizontal(|ui| {
            ui.label("Alpha Quality:");
            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
                ui.label(format!("{}", settings.alpha_quality));
            });
        });
        let alpha_slider = egui::Slider::new(&mut settings.alpha_quality, 0..=100)
            .show_value(false);
        ui.add(alpha_slider);
        ui.add_space(4.0);
        ui.label(
            egui::RichText::new("Separate quality for transparency")
                .small()
                .weak(),
        );

        ui.add_space(12.0);

        // Speed slider
        ui.horizontal(|ui| {
            ui.label("Speed:");
            ui.with_layout(egui::Layout::right_to_left(egui::Align::Center), |ui| {
                ui.label(format!("{}", settings.speed));
            });
        });
        let speed_slider = egui::Slider::new(&mut settings.speed, 0..=10)
            .show_value(false);
        ui.add(speed_slider);
        ui.add_space(4.0);
        ui.label(
            egui::RichText::new("0 = slowest/best, 10 = fastest")
                .small()
                .weak(),
        );

        ui.add_space(16.0);
        ui.separator();
        ui.add_space(8.0);

        // Lossless checkbox
        let mut lossless = settings.lossless;
        if ui.checkbox(&mut lossless, "Lossless mode").changed() {
            settings.lossless = lossless;
            if lossless {
                settings.quality = 100;
                settings.alpha_quality = 100;
            }
        }
        ui.add_space(4.0);
        ui.label(
            egui::RichText::new("Perfect quality, larger files")
                .small()
                .weak(),
        );

        ui.add_space(16.0);
        ui.separator();
        ui.add_space(8.0);

        // FPS Override
        ui.label("FPS Override (for videos):");
        ui.add_space(4.0);

        let has_override = settings.fps_override.is_some();
        let mut fps_value = settings.fps_override.unwrap_or(30.0);

        ui.horizontal(|ui| {
            let mut use_override = has_override;
            if ui.checkbox(&mut use_override, "").changed() {
                if use_override {
                    settings.fps_override = Some(fps_value);
                } else {
                    settings.fps_override = None;
                }
            }

            ui.add_enabled_ui(has_override, |ui| {
                let fps_edit = egui::DragValue::new(&mut fps_value)
                    .speed(0.5)
                    .range(1.0..=120.0)
                    .suffix(" fps");
                if ui.add(fps_edit).changed() && has_override {
                    settings.fps_override = Some(fps_value);
                }
            });

            if !has_override {
                ui.label(egui::RichText::new("Auto-detect").weak());
            }
        });

        ui.add_space(16.0);
        ui.separator();
        ui.add_space(8.0);

        // Output directory
        ui.label("Output Directory:");
        ui.add_space(4.0);

        if ui
            .checkbox(&mut settings.use_same_directory, "Same as source")
            .changed()
        {
            if settings.use_same_directory {
                settings.output_directory = None;
            }
        }

        ui.add_enabled_ui(!settings.use_same_directory, |ui| {
            ui.horizontal(|ui| {
                let dir_text = settings
                    .output_directory
                    .as_ref()
                    .map(|p| p.display().to_string())
                    .unwrap_or_else(|| "Not set".to_string());

                ui.label(egui::RichText::new(&dir_text).small());
            });

            if ui.button("Browse...").clicked() {
                if let Some(path) = rfd::FileDialog::new().pick_folder() {
                    settings.output_directory = Some(path);
                }
            }
        });
    }
}