import type { Monitor } from "@/services/monitors";
import Players from "@/services/players";
import Updates from "@/services/updates";
import { getAppCategoryIcon } from "@/utils/icons";
import { bindCurrentTime, osIcon } from "@/utils/system";
import type { AstalWidget } from "@/utils/types";
import { setupCustomTooltip } from "@/utils/widgets";
import ScreenCorner from "@/widgets/screencorner";
import { execAsync, GLib, Variable } from "astal";
import { bind, kebabify } from "astal/binding";
import { App, Astal, Gtk, Widget } from "astal/gtk3";
import { bar as config } from "config";
import AstalBattery from "gi://AstalBattery";
import AstalBluetooth from "gi://AstalBluetooth";
import AstalHyprland from "gi://AstalHyprland";
import AstalNetwork from "gi://AstalNetwork";
import AstalNotifd from "gi://AstalNotifd";
import AstalTray from "gi://AstalTray";
import AstalWp from "gi://AstalWp";
import { switchPane } from "./sidebar";

interface ClassNameProps {
    beforeSpacer: boolean;
    afterSpacer: boolean;
    first: boolean;
    last: boolean;
}

interface ModuleProps extends ClassNameProps {
    monitor: Monitor;
}

const hyprland = AstalHyprland.get_default();

const getBatteryIcon = (perc: number) => {
    if (perc < 0.1) return "󰁺";
    if (perc < 0.2) return "󰁻";
    if (perc < 0.3) return "󰁼";
    if (perc < 0.4) return "󰁽";
    if (perc < 0.5) return "󰁾";
    if (perc < 0.6) return "󰁿";
    if (perc < 0.7) return "󰂀";
    if (perc < 0.8) return "󰂁";
    if (perc < 0.9) return "󰂂";
    return "󰁹";
};

const formatSeconds = (sec: number) => {
    if (sec >= 3600) {
        const hours = Math.floor(sec / 3600);
        let str = `${hours} hour${hours === 1 ? "" : "s"}`;
        const mins = Math.floor((sec % 3600) / 60);
        if (mins > 0) str += ` ${mins} minute${mins === 1 ? "" : "s"}`;
        return str;
    } else if (sec >= 60) {
        const mins = Math.floor(sec / 60);
        return `${mins} minute${mins === 1 ? "" : "s"}`;
    } else return `${sec} second${sec === 1 ? "" : "s"}`;
};

const hookFocusedClientProp = (
    self: AstalWidget,
    prop: keyof AstalHyprland.Client,
    callback: (c: AstalHyprland.Client | null) => void
) => {
    let id: number | null = null;
    let lastClient: AstalHyprland.Client | null = null;
    self.hook(hyprland, "notify::focused-client", () => {
        if (id) lastClient?.disconnect(id);
        lastClient = hyprland.focusedClient; // Can be null
        id = lastClient?.connect(`notify::${kebabify(prop)}`, () => callback(lastClient));
        callback(lastClient);
    });
    self.connect("destroy", () => id && lastClient?.disconnect(id));
    callback(lastClient);
};

const getClassName = ({ beforeSpacer, afterSpacer, first, last }: ClassNameProps) =>
    `${beforeSpacer ? "before-spacer" : ""} ${afterSpacer ? "after-spacer" : ""}` +
    ` ${first ? "first" : ""} ${last ? "last" : ""}`;

const getModule = (module: string) => {
    module = module.toLowerCase();
    if (module === "osicon") return OSIcon;
    if (module === "activewindow") return ActiveWindow;
    if (module === "mediaplaying") return MediaPlaying;
    if (module === "workspaces") return Workspaces;
    if (module === "tray") return Tray;
    if (module === "statusicons") return StatusIcons;
    if (module === "pkgupdates") return PkgUpdates;
    if (module === "notifcount") return NotifCount;
    if (module === "battery") return Battery;
    if (module === "datetime") return DateTime;
    if (module === "power") return Power;
    if (module === "brightnessspacer") return BrightnessSpacer;
    if (module === "volumespacer") return VolumeSpacer;
    return () => null;
};

const isSpacer = (module?: string) => module?.toLowerCase().endsWith("spacer") ?? false;

const OSIcon = ({ monitor, ...props }: ModuleProps) => (
    <button
        className={`module os-icon ${getClassName(props)}`}
        onClick={(_, event) => event.button === Astal.MouseButton.PRIMARY && switchPane(monitor, "dashboard")}
    >
        {osIcon}
    </button>
);

const ActiveWindow = ({ monitor, ...props }: ModuleProps) => (
    <box
        vertical={bind(config.vertical)}
        className={`module active-window ${getClassName(props)}`}
        setup={self => {
            const title = Variable("");
            const updateTooltip = (c: AstalHyprland.Client | null) =>
                title.set(c?.class && c?.title ? `${c.class}: ${c.title}` : "");
            hookFocusedClientProp(self, "class", updateTooltip);
            hookFocusedClientProp(self, "title", updateTooltip);
            updateTooltip(hyprland.focusedClient);

            const window = setupCustomTooltip(self, bind(title));
            if (window) {
                self.hook(title, (_, v) => !v && window.hide());
                self.hook(window, "map", () => !title.get() && window.hide());
            }
        }}
    >
        <label
            className="icon"
            setup={self =>
                hookFocusedClientProp(self, "class", c => {
                    self.label = c?.class ? getAppCategoryIcon(c.class) : "desktop_windows";
                })
            }
        />
        <label
            truncate
            angle={bind(config.vertical).as(v => (v ? 270 : 0))}
            setup={self => {
                const update = () =>
                    (self.label = hyprland.focusedClient?.title ? hyprland.focusedClient.title : "Desktop");
                hookFocusedClientProp(self, "title", update);
                self.hook(config.vertical, update);
            }}
        />
    </box>
);

const MediaPlaying = ({ monitor, ...props }: ModuleProps) => {
    const players = Players.get_default();
    const getLabel = (fallback = "") =>
        players.lastPlayer ? `${players.lastPlayer.title} - ${players.lastPlayer.artist}` : fallback;
    return (
        <button
            onClick={(_, event) => {
                if (event.button === Astal.MouseButton.PRIMARY) switchPane(monitor, "audio");
                else if (event.button === Astal.MouseButton.SECONDARY) players.lastPlayer?.play_pause();
                else if (event.button === Astal.MouseButton.MIDDLE) players.lastPlayer?.raise();
            }}
            setup={self => {
                const label = Variable(getLabel());
                players.hookLastPlayer(self, ["notify::title", "notify::artist"], () => label.set(getLabel()));
                setupCustomTooltip(self, bind(label));
            }}
        >
            <box vertical={bind(config.vertical)} className={`module media-playing ${getClassName(props)}`}>
                <icon
                    setup={self =>
                        players.hookLastPlayer(self, "notify::identity", () => {
                            const icon = `caelestia-${players.lastPlayer?.identity
                                .toLowerCase()
                                .replaceAll(" ", "-")}-symbolic`;
                            self.icon = players.lastPlayer
                                ? Astal.Icon.lookup_icon(icon)
                                    ? icon
                                    : "caelestia-media-generic-symbolic"
                                : "caelestia-media-none-symbolic";
                        })
                    }
                />
                <label
                    truncate
                    angle={bind(config.vertical).as(v => (v ? 270 : 0))}
                    setup={self => {
                        const update = () => (self.label = getLabel("No media"));
                        players.hookLastPlayer(self, ["notify::title", "notify::artist"], update);
                        self.hook(config.vertical, update);
                    }}
                />
            </box>
        </button>
    );
};

const Workspace = ({ idx }: { idx: number }) => {
    const wsId = Variable.derive([bind(hyprland, "focusedWorkspace"), config.modules.workspaces.shown], (f, s) =>
        f ? Math.floor((f.id - 1) / s) * s + idx : idx
    );

    const label = (
        <label
            css={bind(config.modules.workspaces.xalign).as(a => `margin-left: ${a}px; margin-right: ${-a}px;`)}
            label={bind(config.modules.workspaces.labels).as(l => l[idx - 1] ?? String(idx))}
        />
    );

    return (
        <button
            halign={Gtk.Align.CENTER}
            valign={Gtk.Align.CENTER}
            onClicked={() => hyprland.dispatch("workspace", String(wsId.get()))}
            setup={self => {
                const updateOccupied = () => {
                    const occupied = hyprland.clients.some(c => c.workspace?.id === wsId.get());
                    self.toggleClassName("occupied", occupied);
                };
                const updateFocused = () => {
                    self.toggleClassName("focused", hyprland.focusedWorkspace?.id === wsId.get());
                    updateOccupied();
                };

                self.hook(hyprland, "client-added", updateOccupied);
                self.hook(hyprland, "client-moved", updateOccupied);
                self.hook(hyprland, "client-removed", updateOccupied);
                self.hook(hyprland, "notify::focused-workspace", updateFocused);
                updateFocused();
            }}
            onDestroy={() => wsId.drop()}
        >
            <box
                visible={bind(config.modules.workspaces.showLabels)}
                vertical={bind(config.vertical)}
                setup={self => {
                    const update = () => {
                        if (config.modules.workspaces.showWindows.get()) {
                            const clients = hyprland.clients.filter(c => c.workspace?.id === wsId.get());
                            self.children = [
                                label,
                                ...clients.map(c => (
                                    <label className="icon" label={bind(c, "class").as(getAppCategoryIcon)} />
                                )),
                            ];
                        } else self.children = [label];
                    };
                    self.hook(wsId, update);
                    self.hook(hyprland, "client-added", update);
                    self.hook(hyprland, "client-moved", update);
                    self.hook(hyprland, "client-removed", update);
                    update();
                }}
            />
        </button>
    );
};

const Workspaces = ({ monitor, ...props }: ModuleProps) => {
    const className = Variable.derive(
        [config.modules.workspaces.shown, config.modules.workspaces.showLabels],
        (s, l) => `module workspaces ${s % 2 === 0 ? "even" : "odd"} ${l ? "labels-shown" : ""} ${getClassName(props)}`
    );

    return (
        <eventbox
            onScroll={(_, event) => {
                const activeWs = hyprland.focusedClient?.workspace.name;
                if (activeWs?.startsWith("special:")) hyprland.dispatch("togglespecialworkspace", activeWs.slice(8));
                else if (event.delta_y > 0 || hyprland.focusedWorkspace?.id > 1)
                    hyprland.dispatch("workspace", (event.delta_y < 0 ? "-" : "+") + 1);
            }}
        >
            <box vertical={bind(config.vertical)} className={bind(className)} onDestroy={() => className.drop()}>
                {bind(config.modules.workspaces.shown).as(
                    n => Array.from({ length: n }).map((_, idx) => <Workspace idx={idx + 1} />) // Start from 1
                )}
            </box>
        </eventbox>
    );
};

const TrayItem = (item: AstalTray.TrayItem) => (
    <menubutton
        onButtonPressEvent={(_, event) => event.get_button()[1] === Astal.MouseButton.SECONDARY && item.activate(0, 0)}
        usePopover={false}
        direction={bind(config.vertical).as(v => (v ? Gtk.ArrowType.RIGHT : Gtk.ArrowType.DOWN))}
        menuModel={bind(item, "menuModel")}
        actionGroup={bind(item, "actionGroup").as(a => ["dbusmenu", a])}
        setup={self => setupCustomTooltip(self, bind(item, "tooltipMarkup"))}
    >
        <icon halign={Gtk.Align.CENTER} gicon={bind(item, "gicon")} />
    </menubutton>
);

const Tray = ({ monitor, ...props }: ModuleProps) => (
    <box
        visible={bind(AstalTray.get_default(), "items").as(i => i.length > 0)}
        vertical={bind(config.vertical)}
        className={`module tray ${getClassName(props)}`}
    >
        {bind(AstalTray.get_default(), "items").as(i => i.map(TrayItem))}
    </box>
);

const Network = ({ monitor }: { monitor: Monitor }) => (
    <button
        onClick={(_, event) => {
            const network = AstalNetwork.get_default();
            if (event.button === Astal.MouseButton.PRIMARY) switchPane(monitor, "connectivity");
            else if (event.button === Astal.MouseButton.SECONDARY) network.wifi.enabled = !network.wifi.enabled;
            else if (event.button === Astal.MouseButton.MIDDLE) {
                if (GLib.find_program_in_path("gnome-control-center"))
                    execAsync("app2unit -- gnome-control-center wifi").catch(console.error);
                else {
                    network.wifi.scan();
                    execAsync(
                        "app2unit -- foot -T nmtui -- fish -c 'sleep .1; set -e COLORTERM; TERM=xterm-old nmtui connect'"
                    ).catch(() => {}); // Ignore errors
                }
            }
        }}
        setup={self => {
            const network = AstalNetwork.get_default();
            const tooltipText = Variable("");
            const update = () => {
                if (network.primary === AstalNetwork.Primary.WIFI) {
                    if (network.wifi.internet === AstalNetwork.Internet.CONNECTED)
                        tooltipText.set(`${network.wifi.ssid} | Strength: ${network.wifi.strength}/100`);
                    else if (network.wifi.internet === AstalNetwork.Internet.CONNECTING)
                        tooltipText.set(`Connecting to ${network.wifi.ssid}`);
                    else tooltipText.set("Disconnected");
                } else if (network.primary === AstalNetwork.Primary.WIRED) {
                    if (network.wired.internet === AstalNetwork.Internet.CONNECTED)
                        tooltipText.set(`Speed: ${network.wired.speed}`);
                    else if (network.wired.internet === AstalNetwork.Internet.CONNECTING) tooltipText.set("Connecting");
                    else tooltipText.set("Disconnected");
                } else {
                    tooltipText.set("Unknown");
                }
            };
            self.hook(network, "notify::primary", update);
            self.hook(network.wifi, "notify::internet", update);
            self.hook(network.wifi, "notify::ssid", update);
            self.hook(network.wifi, "notify::strength", update);
            if (network.wired) {
                self.hook(network.wired, "notify::internet", update);
                self.hook(network.wired, "notify::speed", update);
            }
            update();
            setupCustomTooltip(self, bind(tooltipText));
        }}
    >
        <stack
            transitionType={Gtk.StackTransitionType.SLIDE_UP_DOWN}
            transitionDuration={120}
            shown={bind(AstalNetwork.get_default(), "primary").as(p =>
                p === AstalNetwork.Primary.WIFI ? "wifi" : "wired"
            )}
        >
            <stack
                name="wifi"
                transitionType={Gtk.StackTransitionType.SLIDE_UP_DOWN}
                transitionDuration={120}
                setup={self => {
                    const network = AstalNetwork.get_default();
                    const update = () => {
                        if (network.wifi.internet === AstalNetwork.Internet.CONNECTED)
                            self.shown = String(Math.ceil(network.wifi.strength / 25));
                        else if (network.wifi.internet === AstalNetwork.Internet.CONNECTING) self.shown = "connecting";
                        else self.shown = "disconnected";
                    };
                    self.hook(network.wifi, "notify::internet", update);
                    self.hook(network.wifi, "notify::strength", update);
                    update();
                }}
            >
                <label className="icon" label="wifi_off" name="disconnected" />
                <label className="icon" label="settings_ethernet" name="connecting" />
                <label className="icon" label="signal_wifi_0_bar" name="0" />
                <label className="icon" label="network_wifi_1_bar" name="1" />
                <label className="icon" label="network_wifi_2_bar" name="2" />
                <label className="icon" label="network_wifi_3_bar" name="3" />
                <label className="icon" label="signal_wifi_4_bar" name="4" />
            </stack>
            <stack
                name="wired"
                transitionType={Gtk.StackTransitionType.SLIDE_UP_DOWN}
                transitionDuration={120}
                setup={self => {
                    const network = AstalNetwork.get_default();
                    const update = () => {
                        if (network.primary !== AstalNetwork.Primary.WIRED) return;

                        if (network.wired.internet === AstalNetwork.Internet.CONNECTED) self.shown = "connected";
                        else if (network.wired.internet === AstalNetwork.Internet.CONNECTING) self.shown = "connecting";
                        else self.shown = "disconnected";
                    };
                    self.hook(network, "notify::primary", update);
                    if (network.wired) self.hook(network.wired, "notify::internet", update);
                    update();
                }}
            >
                <label className="icon" label="wifi_off" name="disconnected" />
                <label className="icon" label="settings_ethernet" name="connecting" />
                <label className="icon" label="lan" name="connected" />
            </stack>
        </stack>
    </button>
);

const BluetoothDevice = ({ monitor, device }: { monitor: Monitor; device: AstalBluetooth.Device }) => (
    <button
        visible={bind(device, "connected")}
        onClick={(_, event) => {
            if (event.button === Astal.MouseButton.PRIMARY) switchPane(monitor, "connectivity");
            else if (event.button === Astal.MouseButton.SECONDARY)
                device.disconnect_device((_, res) => device.disconnect_device_finish(res));
            else if (event.button === Astal.MouseButton.MIDDLE)
                execAsync("app2unit -- blueman-manager").catch(console.error);
        }}
        setup={self => setupCustomTooltip(self, bind(device, "alias"))}
    >
        <icon
            icon={bind(device, "icon").as(i =>
                Astal.Icon.lookup_icon(`${i}-symbolic`) ? `${i}-symbolic` : "caelestia-bluetooth-device-symbolic"
            )}
        />
    </button>
);

const Bluetooth = ({ monitor }: { monitor: Monitor }) => (
    <box vertical={bind(config.vertical)} className="bluetooth">
        <button
            onClick={(_, event) => {
                if (event.button === Astal.MouseButton.PRIMARY) switchPane(monitor, "connectivity");
                else if (event.button === Astal.MouseButton.SECONDARY) AstalBluetooth.get_default().toggle();
                else if (event.button === Astal.MouseButton.MIDDLE)
                    execAsync("app2unit -- blueman-manager").catch(console.error);
            }}
            setup={self => {
                const bluetooth = AstalBluetooth.get_default();
                const tooltipText = Variable("");
                const update = () => {
                    const devices = bluetooth.get_devices().filter(d => d.connected);
                    tooltipText.set(
                        devices.length > 0
                            ? `Connected devices: ${devices.map(d => d.alias).join(", ")}`
                            : "No connected devices"
                    );
                };
                const hookDevice = (device: AstalBluetooth.Device) => {
                    self.hook(device, "notify::connected", update);
                    self.hook(device, "notify::alias", update);
                };
                bluetooth.get_devices().forEach(hookDevice);
                self.hook(bluetooth, "device-added", (_, device) => {
                    hookDevice(device);
                    update();
                });
                update();
                setupCustomTooltip(self, bind(tooltipText));
            }}
        >
            <stack
                transitionType={Gtk.StackTransitionType.SLIDE_UP_DOWN}
                transitionDuration={120}
                shown={bind(AstalBluetooth.get_default(), "isPowered").as(p => (p ? "enabled" : "disabled"))}
            >
                <label className="icon" label="bluetooth" name="enabled" />
                <label className="icon" label="bluetooth_disabled" name="disabled" />
            </stack>
        </button>
        {bind(AstalBluetooth.get_default(), "devices").as(d =>
            d.map(d => <BluetoothDevice monitor={monitor} device={d} />)
        )}
    </box>
);

const StatusIcons = ({ monitor, ...props }: ModuleProps) => (
    <box vertical={bind(config.vertical)} className={`module status-icons ${getClassName(props)}`}>
        <Network monitor={monitor} />
        <Bluetooth monitor={monitor} />
    </box>
);

const PkgUpdates = ({ monitor, ...props }: ModuleProps) => (
    <button
        onClick={(_, event) => event.button === Astal.MouseButton.PRIMARY && switchPane(monitor, "packages")}
        setup={self =>
            setupCustomTooltip(
                self,
                bind(Updates.get_default(), "numUpdates").as(n => `${n} update${n === 1 ? "" : "s"} available`)
            )
        }
    >
        <box vertical={bind(config.vertical)} className={`module pkg-updates ${getClassName(props)}`}>
            <label className="icon" label="download" />
            <label label={bind(Updates.get_default(), "numUpdates").as(String)} />
        </box>
    </button>
);

const NotifCount = ({ monitor, ...props }: ModuleProps) => (
    <button
        onClick={(_, event) => event.button === Astal.MouseButton.PRIMARY && switchPane(monitor, "alerts")}
        setup={self =>
            setupCustomTooltip(
                self,
                bind(AstalNotifd.get_default(), "notifications").as(
                    n => `${n.length} notification${n.length === 1 ? "" : "s"}`
                )
            )
        }
    >
        <box vertical={bind(config.vertical)} className={`module notif-count ${getClassName(props)}`}>
            <label
                className="icon"
                label={bind(AstalNotifd.get_default(), "dontDisturb").as(d => (d ? "notifications_off" : "info"))}
            />
            <revealer
                transitionType={bind(config.vertical).as(v =>
                    v ? Gtk.RevealerTransitionType.SLIDE_DOWN : Gtk.RevealerTransitionType.SLIDE_RIGHT
                )}
                transitionDuration={120}
                revealChild={bind(AstalNotifd.get_default(), "dontDisturb").as(d => !d)}
            >
                <label label={bind(AstalNotifd.get_default(), "notifications").as(n => String(n.length))} />
            </revealer>
        </box>
    </button>
);

const Battery = ({ monitor, ...props }: ModuleProps) => {
    const className = Variable.derive(
        [bind(AstalBattery.get_default(), "percentage"), bind(AstalBattery.get_default(), "charging")],
        (p, c) => `module battery ${c ? "charging" : p < 0.2 ? "low" : ""} ${getClassName(props)}`
    );
    const tooltip = Variable.derive(
        [bind(AstalBattery.get_default(), "timeToEmpty"), bind(AstalBattery.get_default(), "timeToFull")],
        (e, f) => (f > 0 ? `${formatSeconds(f)} until full` : `${formatSeconds(e)} remaining`)
    );

    return (
        <box
            visible={bind(AstalBattery.get_default(), "isBattery")}
            vertical={bind(config.vertical)}
            className={bind(className)}
            setup={self => setupCustomTooltip(self, bind(tooltip))}
            onDestroy={() => {
                className.drop();
                tooltip.drop();
            }}
        >
            <label className="icon" label={bind(AstalBattery.get_default(), "percentage").as(getBatteryIcon)} />
            <label label={bind(AstalBattery.get_default(), "percentage").as(p => `${Math.round(p * 100)}%`)} />
        </box>
    );
};

const DateTimeHoriz = (props: ClassNameProps) => (
    <box className={`module date-time ${getClassName(props)}`}>
        <label className="icon" label="calendar_month" />
        <label
            setup={self => {
                const time = bindCurrentTime(bind(config.modules.dateTime.format), undefined, self);
                self.label = time.get();
                self.hook(time, (_, t) => (self.label = t));
            }}
        />
    </box>
);

const DateTimeVertical = (props: ClassNameProps) => (
    <box vertical className={`module date-time ${getClassName(props)}`}>
        <label className="icon" label="calendar_month" />
        <label label={bindCurrentTime("%H")} />
        <label label={bindCurrentTime("%M")} />
    </box>
);

const DateTime = ({ monitor, ...props }: ModuleProps) => (
    <button
        onClick={(_, event) => event.button === Astal.MouseButton.PRIMARY && switchPane(monitor, "time")}
        setup={self =>
            setupCustomTooltip(self, bindCurrentTime(bind(config.modules.dateTime.detailedFormat), undefined, self))
        }
    >
        {bind(config.vertical).as(v => (v ? <DateTimeVertical {...props} /> : <DateTimeHoriz {...props} />))}
    </button>
);

const Power = ({ monitor, ...props }: ModuleProps) => (
    <button
        className={`module power ${getClassName(props)}`}
        label="power_settings_new"
        onClick={(_, event) => event.button === Astal.MouseButton.PRIMARY && App.toggle_window("session")}
    />
);

const Spacer = ({ onScroll }: { onScroll: (self: Widget.EventBox, event: Astal.ScrollEvent) => void }) => (
    <eventbox onScroll={onScroll}>
        <box vertical={bind(config.vertical)}>
            <ScreenCorner place="topleft" />
            <box expand />
            <ScreenCorner place={bind(config.vertical).as(v => (v ? "bottomleft" : "topright"))} />
        </box>
    </eventbox>
);

const BrightnessSpacer = ({ monitor }: { monitor: Monitor }) => (
    <Spacer onScroll={(_, event) => (event.delta_y > 0 ? (monitor.brightness -= 0.1) : (monitor.brightness += 0.1))} />
);

const VolumeSpacer = () => (
    <Spacer
        onScroll={(_, event) => {
            const speaker = AstalWp.get_default()?.audio.defaultSpeaker;
            if (!speaker) return console.error("Unable to connect to WirePlumber.");
            speaker.mute = false;
            if (event.delta_y > 0) speaker.volume -= 0.1;
            else speaker.volume += 0.1;
        }}
    />
);

const Bar = ({ monitor, layout }: { monitor: Monitor; layout: string }) => {
    const className = Variable.derive(
        [bind(config.vertical), bind(config.style)],
        (v, s) => `bar ${v ? "vertical" : " horizontal"} ${s}`
    );
    const modules =
        layout === "centerbox"
            ? Variable.derive(Object.values(config.layout.centerbox))
            : bind(config.layout.flowbox).as(m => [m]);

    const Layout = layout === "centerbox" ? Widget.CenterBox : Widget.Box;
    return (
        <Layout
            vertical={bind(config.vertical)}
            className={bind(className)}
            onDestroy={() => {
                className.drop();
                if (modules instanceof Variable) modules.drop();
            }}
        >
            {bind(modules).as(modules =>
                modules.map((m, i) => (
                    <box vertical={bind(config.vertical)}>
                        {m.map((n, j) => {
                            let beforeSpacer = false;
                            if (j < m.length - 1) beforeSpacer = isSpacer(m[j + 1]);
                            else if (i < modules.length - 1) beforeSpacer = isSpacer(modules[i + 1][0]);
                            let afterSpacer = false;
                            if (j > 0) afterSpacer = isSpacer(m[j - 1]);
                            else if (i > 0) afterSpacer = isSpacer(modules[i - 1].at(-1));
                            const M = getModule(n);
                            return (
                                <M
                                    monitor={monitor}
                                    beforeSpacer={beforeSpacer}
                                    afterSpacer={afterSpacer}
                                    first={i === 0 && j === 0}
                                    last={i === modules.length - 1 && j === m.length - 1}
                                />
                            );
                        })}
                    </box>
                ))
            )}
        </Layout>
    );
};

export default ({ monitor }: { monitor: Monitor }) => (
    <window
        namespace="caelestia-bar"
        monitor={monitor.id}
        anchor={bind(config.vertical).as(
            v =>
                Astal.WindowAnchor.TOP |
                Astal.WindowAnchor.LEFT |
                (v ? Astal.WindowAnchor.BOTTOM : Astal.WindowAnchor.RIGHT)
        )}
        exclusivity={Astal.Exclusivity.EXCLUSIVE}
    >
        <overlay
            passThrough
            overlays={[
                <ScreenCorner visible={bind(config.style).as(s => s !== "embedded")} place="topleft" />,
                <ScreenCorner
                    visible={bind(config.style).as(s => s !== "embedded")}
                    halign={bind(config.vertical).as(v => (v ? undefined : Gtk.Align.END))}
                    valign={bind(config.vertical).as(v => (v ? Gtk.Align.END : undefined))}
                    place={bind(config.vertical).as(v => (v ? "bottomleft" : "topright"))}
                />,
            ]}
        >
            {bind(config.layout.type).as(l => (
                <Bar monitor={monitor} layout={l} />
            ))}
        </overlay>
    </window>
);