import { Gtk } from "ags/gtk4";
import { Page, PageButton } from "../Page";
import { tr } from "../../../../i18n/intl";
import { Windows } from "../../../../windows";
import { Notifications } from "../../../../modules/notifications";
import { execApp } from "../../../../modules/apps";
import { createBinding, createComputed, For, With } from "ags";
import { variableToBoolean } from "../../../../modules/utils";
import { Bluetooth } from "../../../../modules/bluetooth";

import AstalNotifd from "gi://AstalNotifd";
import AstalBluetooth from "gi://AstalBluetooth";
import Adw from "gi://Adw?version=1";
import Gio from "gi://Gio?version=2.0";


export const BluetoothPage = <Page
    id={"bluetooth"}
    title={tr("control_center.pages.bluetooth.title")}
    spacing={6}
    description={tr("control_center.pages.bluetooth.description")}
    headerButtons={createBinding(Bluetooth.getDefault(), "adapter").as(adapter => adapter ? [{
        icon: createBinding(adapter, "discovering")
            .as(discovering => !discovering ? 
                    "arrow-circular-top-right-symbolic"
                : "media-playback-stop-symbolic"
            ), 
        tooltipText: createBinding(adapter, "discovering")
            .as((discovering) => !discovering ? 
                    tr("control_center.pages.bluetooth.start_discovering")
                : tr("control_center.pages.bluetooth.stop_discovering")),
        actionClicked: () => {
            if(adapter.discovering) {
                adapter.stop_discovery();
                return;
            }

            adapter.start_discovery();
        }
    }]: [])}
    actionClosed={() => Bluetooth.getDefault().adapter?.discovering && 
        Bluetooth.getDefault().adapter?.stop_discovery()}
    bottomButtons={[{
        title: tr("control_center.pages.more_settings"),
        actionClicked: () => {
            Windows.getDefault().close("control-center");
            execApp("overskride", "[float; animation slide right]");
        }
    }]}
    content={() => {
        const adapters = createBinding(AstalBluetooth.get_default(), "adapters");
        const devices = createBinding(AstalBluetooth.get_default(), "devices");
        const knownDevices = devices.as(devs => devs.filter(dev =>
            dev.trusted || dev.paired || dev.connected
        ).sort(dev => dev.connected ? 1 : 0));
        const discoveredDevices = devices.as(devs => devs.filter(dev =>
            !dev.trusted && !dev.paired && !dev.connected)
        );

        return [
            <Gtk.Box class={"adapters"} visible={adapters.as(adptrs => adptrs.length > 1)
            } spacing={2} orientation={Gtk.Orientation.VERTICAL}>

                <Gtk.Label class={"sub-header"} label={tr("control_center.pages.bluetooth.adapters")} 
                  xalign={0} />
                <With value={adapters.as(adpts => adpts.length > 1)}>
                    {(hasMoreAdapters: boolean) => hasMoreAdapters &&
                        <Gtk.Box orientation={Gtk.Orientation.VERTICAL} spacing={2}>
                            <For each={adapters}> 
                                {(adapter: AstalBluetooth.Adapter) => {
                                    const isSelected = createBinding(Bluetooth.getDefault(), "adapter").as(a =>
                                        adapter.address === a?.address);

                                    return <PageButton class={isSelected.as(is => is ? "selected" : "")} 
                                      title={adapter.alias ?? "Adapter"} icon={"bluetooth-active-symbolic"} 
                                      description={createBinding(adapter, "address")}
                                      actionClicked={() => {
                                          if(adapter.address !== Bluetooth.getDefault().adapter?.address)
                                              Bluetooth.getDefault().adapter = adapter;
                                      }}
                                      endWidget={
                                          <Gtk.Image iconName={"object-select-symbolic"} visible={isSelected} />
                                      }
                                    />;
                                }}
                            </For>
                        </Gtk.Box>
                    }
                </With>
            </Gtk.Box>,
            <Gtk.Box class={"connections"} orientation={Gtk.Orientation.VERTICAL} hexpand
              spacing={2}>
                
                <Gtk.Box class={"paired"} orientation={Gtk.Orientation.VERTICAL} spacing={4}
                  visible={variableToBoolean(knownDevices)}>

                    <Gtk.Label class={"sub-header"} label={tr("devices")} xalign={0} />
                    <For each={knownDevices}>
                        {(dev: AstalBluetooth.Device) => <DeviceWidget device={dev} />}
                    </For>
                </Gtk.Box>
                <Gtk.Box class={"discovered"} orientation={Gtk.Orientation.VERTICAL} spacing={4}
                  visible={variableToBoolean(discoveredDevices)}>

                    <Gtk.Label class={"sub-header"} label={tr("control_center.pages.bluetooth.new_devices")} 
                      xalign={0} />
                    <For each={discoveredDevices}>
                        {(dev: AstalBluetooth.Device) => <DeviceWidget device={dev} />}
                    </For>
                </Gtk.Box>
            </Gtk.Box>
        ];
    }}
/> as Page;

function DeviceWidget({ device }: { device: AstalBluetooth.Device }): Gtk.Widget {
    const pair = async () => {
        if(device.paired) return;

        device.pair();
        device.set_trusted(true);
    };

    return <PageButton class={createBinding(device, "connected").as(conn => 
      conn ? "selected" : "")} title={
          createBinding(device, "alias").as(alias => alias ?? "Unknown Device")} 
        icon={createBinding(device, "icon").as(ico => ico ?? "bluetooth-active-symbolic")}
        tooltipText={
            createBinding(device, "connected").as(connected => 
                !connected ? tr("connect") : "")
        } actionClicked={() => {
            if(device.connected) return;

            pair().then(() => {
                device.connect_device((_, res) => {

                    // get error
                    try { device.connect_device_finish(res); }
                    catch(e: any) {
                        Notifications.getDefault().sendNotification({
                            appName: "bluetooth",
                            summary: "Connection Error",
                            body: `An error occurred while attempting to connect to ${
                                device.alias ?? device.name}: ${(e as Gio.IOErrorEnum).message}`
                        });
                    }
                });
            }).catch((err: Gio.IOErrorEnum) => 
                Notifications.getDefault().sendNotification({
                    appName: "bluetooth",
                    summary: "Pairing Error",
                    body: `Couldn't pair with ${device.alias ?? device.name}: ${err.message}`,
                    urgency: AstalNotifd.Urgency.NORMAL
                })
            );
        }}
        endWidget={<Gtk.Box spacing={6}>
            <Adw.Spinner visible={createBinding(device, "connecting")} />
            <Gtk.Box visible={createComputed([
                  createBinding(device, "batteryPercentage"),
                  createBinding(device, "connected")
              ]).as(([batt, connected]) => connected && (batt > -1))
            } spacing={4}>
                <Gtk.Label halign={Gtk.Align.END} label={
                  createBinding(device, "batteryPercentage").as(batt => 
                      `${Math.floor(batt * 100)}%`)
                  } visible={createBinding(device, "connected")}
                />

                <Gtk.Image iconName={
                    createBinding(device, "batteryPercentage").as(batt =>
                        `battery-level-${Math.floor(batt * 100)}-symbolic`)
                } css={"font-size: 16px; margin-left: 6px;"} />
            </Gtk.Box>
        </Gtk.Box>} extraButtons={<With value={createComputed([
            createBinding(device, "connected"),
            createBinding(device, "trusted")
          ])}>
            {([connected, trusted]: [boolean, boolean]) =>
                <Gtk.Box visible={connected || trusted}>
                    {<Gtk.Button iconName={connected ? 
                          "list-remove-symbolic"
                      : "user-trash-symbolic"} tooltipText={tr(connected ?
                          "disconnect"
                      : "control_center.pages.bluetooth.unpair_device"
                    )} onClicked={() => {
                        if(!connected) {
                            Bluetooth.getDefault().adapter?.remove_device(device);
                            return;
                        }

                        device.disconnect_device(null);
                    }} />}

                    <Gtk.Button iconName={trusted ? 
                          "shield-safe-symbolic"
                      : "shield-danger-symbolic"} tooltipText={tr(
                          `control_center.pages.bluetooth.${trusted ? "un" : ""}trust_device`
                      )} onClicked={() => device.set_trusted(!trusted)}
                    />
                </Gtk.Box>
            }
        </With>} 
    /> as Gtk.Widget;
}
