use super::*;

pub(super) fn fit_width(ui: &egui::Ui, min: f32, max: f32) -> f32 {
    let available = ui.available_width().max(1.0);
    available.min(max).max(min.min(available))
}

pub(super) fn icon_text(icon: Icon, size: f32) -> egui::RichText {
    egui::RichText::new(icon.as_str()).font(egui::FontId::new(
        size,
        egui::FontFamily::Name(PHOSPHOR.into()),
    ))
}

pub(super) fn exact_region<R>(
    ui: &mut egui::Ui,
    size: egui::Vec2,
    layout: egui::Layout,
    add_contents: impl FnOnce(&mut egui::Ui) -> R,
) -> R {
    let (rect, _response) = ui.allocate_exact_size(size, egui::Sense::hover());
    let mut child = ui.new_child(egui::UiBuilder::new().max_rect(rect).layout(layout));
    child.set_clip_rect(rect.intersect(ui.clip_rect()));
    add_contents(&mut child)
}

pub(super) fn exact_region_with_pointer<R>(
    ui: &mut egui::Ui,
    size: egui::Vec2,
    layout: egui::Layout,
    add_contents: impl FnOnce(&mut egui::Ui, bool) -> R,
) -> (R, egui::Response) {
    let (rect, _response) = ui.allocate_exact_size(size, egui::Sense::hover());
    let contains_pointer = ui
        .ctx()
        .pointer_hover_pos()
        .is_some_and(|position| rect.contains(position));
    let mut child = ui.new_child(
        egui::UiBuilder::new()
            .max_rect(rect)
            .layout(layout)
            .sense(egui::Sense::click()),
    );
    child.set_clip_rect(rect.intersect(ui.clip_rect()));
    let result = add_contents(&mut child, contains_pointer);
    let response = child.response();
    (result, response)
}

pub(super) fn details_width_for_layout(
    available_width: f32,
    tree_width: f32,
    requested: f32,
) -> f32 {
    let max_width = (available_width - tree_width - MIN_CONTENT_WIDTH).max(DETAILS_MIN_WIDTH);
    requested.clamp(DETAILS_MIN_WIDTH, max_width)
}

pub(super) fn content_width_for_layout(
    available_width: f32,
    tree_width: f32,
    details_width: f32,
) -> f32 {
    (available_width - tree_width - details_width).max(MIN_CONTENT_WIDTH.min(available_width))
}

pub(super) fn details_resize_handle(
    ui: &mut egui::Ui,
    boundary: egui::Pos2,
    height: f32,
) -> egui::Response {
    let rect = egui::Rect::from_min_size(
        egui::pos2(boundary.x - DETAILS_RESIZE_HANDLE_WIDTH * 0.5, boundary.y),
        egui::vec2(DETAILS_RESIZE_HANDLE_WIDTH, height),
    );
    let response = ui.interact(
        rect,
        egui::Id::new("asset_details_resize_handle"),
        egui::Sense::drag(),
    );
    let stroke_color = if response.hovered() || response.dragged() {
        ACCENT
    } else {
        BORDER
    };
    ui.painter().vline(
        boundary.x,
        rect.y_range().shrink(4.0),
        egui::Stroke::new(2.0_f32, stroke_color),
    );
    response
        .on_hover_cursor(egui::CursorIcon::ResizeHorizontal)
        .on_hover_text("Drag to resize asset details; double-click to reset")
}