//! Confirm dialog — save/discard/cancel confirmation and selection operation parameter dialog.

use crate::app::Message;
use crate::theme::ThemeColors;
use crate::widgets::plain_slider::plain_slider;
use iced::widget::{column, horizontal_rule, row, text};
use iced::Element;

/// Build a confirmation dialog with save/discard/cancel.
pub fn close_confirm_view(doc_name: &str, colors: ThemeColors) -> Element<'static, Message> {
    let msg = format!("\"{}\" has unsaved changes.", doc_name);

    let save_btn = super::primary_btn("Save", Message::DialogCloseSave, colors);
    let discard_btn = super::secondary_btn("Discard", Message::DialogCloseDiscard, colors);
    let cancel_btn = super::secondary_btn("Cancel", Message::DialogClose, colors);

    let dialog = column![
        text("Unsaved Changes").size(16).font(iced::Font::MONOSPACE),
        horizontal_rule(1),
        text(msg).size(12),
        horizontal_rule(1),
        row![save_btn, discard_btn, cancel_btn].spacing(12),
    ]
    .spacing(8)
    .padding(16)
    .width(400);

    super::modal(dialog, colors)
}

/// Return the slider range and unit suffix for a selection operation.
fn selection_op_range(op: &str) -> (f32, f32, &'static str) {
    match op {
        "Erode" => (1.0, 50.0, "px"),
        "Fade" => (0.0, 100.0, "radius"),
        "Feather" => (0.0, 250.0, "px"),
        "Border" => (1.0, 200.0, "px"),
        _ => (1.0, 100.0, "px"),
    }
}

/// Build a selection operation dialog (grow/shrink/feather/erode/fade).
pub fn selection_op_view(
    op_name: &str,
    value: f32,
    _min: f32,
    _max: f32,
    colors: ThemeColors,
) -> Element<'static, Message> {
    let op_owned = op_name.to_string();
    let (range_min, range_max, unit) = selection_op_range(op_name);
    let step = if unit == "radius" { 0.5 } else { 1.0 };
    let value_slider = plain_slider(
        &format!("Value ({})", unit),
        value,
        range_min..=range_max,
        step,
        "",
        0,
        |v| Message::SelectionOpValue(v),
    );

    let apply_btn = super::primary_btn("Apply", Message::SelectionOpApply, colors);
    let cancel_btn = super::secondary_btn("Cancel", Message::DialogClose, colors);

    let dialog = column![
        text(op_owned).size(14).font(iced::Font::MONOSPACE),
        horizontal_rule(1),
        value_slider,
        horizontal_rule(1),
        row![apply_btn, cancel_btn].spacing(12),
    ]
    .spacing(8)
    .padding(16)
    .width(350);

    super::modal(dialog, colors)
}