import { type WindowProps } from "types/widgets/window"
import { type RevealerProps } from "types/widgets/revealer"
import { type EventBoxProps } from "types/widgets/eventbox"
import type Gtk from "gi://Gtk?version=3.0"
import options from "options"

type Transition = RevealerProps["transition"]
type Child = WindowProps["child"]

type PopupWindowProps = Omit<WindowProps, "name"> & {
    name: string
    layout?: keyof ReturnType<typeof Layout>
    transition?: Transition,
}

export const Padding = (name: string, {
    css = "",
    hexpand = true,
    vexpand = true,
}: EventBoxProps = {}) => Widget.EventBox({
    hexpand,
    vexpand,
    can_focus: false,
    child: Widget.Box({ css }),
    setup: w => w.on("button-press-event", () => App.toggleWindow(name)),
})

const PopupRevealer = (
    name: string,
    child: Child,
    transition: Transition = "slide_down",
) => Widget.Box(
    { css: "padding: 1px;" },
    Widget.Revealer({
        transition,
        child: Widget.Box({
            class_name: "window-content",
            child,
        }),
        transitionDuration: options.transition.bind(),
        setup: self => self.hook(App, (_, wname, visible) => {
            if (wname === name)
                self.reveal_child = visible
        }),
    }),
)

const Layout = (name: string, child: Child, transition?: Transition) => ({
    "center": () => Widget.CenterBox({},
        Padding(name),
        Widget.CenterBox(
            { vertical: true },
            Padding(name),
            PopupRevealer(name, child, transition),
            Padding(name),
        ),
        Padding(name),
    ),
    "top": () => Widget.CenterBox({},
        Padding(name),
        Widget.Box(
            { vertical: true },
            PopupRevealer(name, child, transition),
            Padding(name),
        ),
        Padding(name),
    ),
    "top-right": () => Widget.Box({},
        Padding(name),
        Widget.Box(
            {
                hexpand: false,
                vertical: true,
            },
            PopupRevealer(name, child, transition),
            Padding(name),
        ),
    ),
    "top-center": () => Widget.Box({},
        Padding(name),
        Widget.Box(
            {
                hexpand: false,
                vertical: true,
            },
            PopupRevealer(name, child, transition),
            Padding(name),
        ),
        Padding(name),
    ),
    "top-left": () => Widget.Box({},
        Widget.Box(
            {
                hexpand: false,
                vertical: true,
            },
            PopupRevealer(name, child, transition),
            Padding(name),
        ),
        Padding(name),
    ),
    "bottom-left": () => Widget.Box({},
        Widget.Box(
            {
                hexpand: false,
                vertical: true,
            },
            Padding(name),
            PopupRevealer(name, child, transition),
        ),
        Padding(name),
    ),
    "bottom-center": () => Widget.Box({},
        Padding(name),
        Widget.Box(
            {
                hexpand: false,
                vertical: true,
            },
            Padding(name),
            PopupRevealer(name, child, transition),
        ),
        Padding(name),
    ),
    "bottom-right": () => Widget.Box({},
        Padding(name),
        Widget.Box(
            {
                hexpand: false,
                vertical: true,
            },
            Padding(name),
            PopupRevealer(name, child, transition),
        ),
    ),
})

export default ({
    name,
    child,
    layout = "center",
    transition,
    exclusivity = "ignore",
    ...props
}: PopupWindowProps) => Widget.Window<Gtk.Widget>({
    name,
    class_names: [name, "popup-window"],
    setup: w => w.keybind("Escape", () => App.closeWindow(name)),
    visible: false,
    keymode: "on-demand",
    exclusivity,
    layer: "top",
    anchor: ["top", "bottom", "right", "left"],
    child: Layout(name, child, transition)[layout](),
    ...props,
})