use gtk4::prelude::*;
use gtk4::{Box as GBox, Label, ListBox, ListBoxRow, Orientation};

pub struct SidebarItem {
    pub id: &'static str,
    pub label: &'static str,
}

pub const APPS_ITEMS: &[SidebarItem] = &[
    SidebarItem { id: "bread",       label: "bread"       },
    SidebarItem { id: "breadbar",    label: "breadbar"    },
    SidebarItem { id: "breadbox",    label: "breadbox"    },
    SidebarItem { id: "breadcrumbs", label: "breadcrumbs" },
    SidebarItem { id: "breadpad",    label: "breadpad"    },
];

pub const SYSTEM_ITEMS: &[SidebarItem] = &[
    SidebarItem { id: "snapshots", label: "Snapshots" },
    SidebarItem { id: "packages",  label: "Packages"  },
    SidebarItem { id: "hyprland",  label: "Hyprland"  },
];

pub fn build() -> (GBox, ListBox) {
    let vbox = GBox::new(Orientation::Vertical, 0);
    vbox.add_css_class("sidebar");
    vbox.set_width_request(190);

    let list = ListBox::new();
    list.set_selection_mode(gtk4::SelectionMode::Single);
    list.add_css_class("sidebar");

    append_section(&list, "Apps", APPS_ITEMS);
    append_section(&list, "System", SYSTEM_ITEMS);

    // Select the snapshots row so it matches the default stack page
    let mut i = 0;
    loop {
        match list.row_at_index(i) {
            None => break,
            Some(row) if row.widget_name() == "snapshots" => {
                list.select_row(Some(&row));
                break;
            }
            _ => i += 1,
        }
    }

    vbox.append(&list);
    (vbox, list)
}

fn append_section(list: &ListBox, title: &str, items: &[SidebarItem]) {
    let header_row = ListBoxRow::new();
    header_row.set_selectable(false);
    header_row.set_activatable(false);
    let header_lbl = Label::new(Some(title));
    header_lbl.add_css_class("section-header");
    header_lbl.set_xalign(0.0);
    header_row.set_child(Some(&header_lbl));
    list.append(&header_row);

    for item in items {
        let row = ListBoxRow::new();
        row.set_widget_name(item.id);
        let lbl = Label::new(Some(item.label));
        lbl.set_xalign(0.0);
        lbl.set_margin_top(2);
        lbl.set_margin_bottom(2);
        row.set_child(Some(&lbl));
        list.append(&row);
    }
}