flipperzero-firmware/applications/bt/bt_hid_app/bt_hid.c

#include "bt_hid.h"
#include <furi-hal-bt.h>
#include <applications/notification/notification-messages.h>

#define TAG "BtHidApp"

enum BtDebugSubmenuIndex {
    BtHidSubmenuIndexKeynote,
    BtHidSubmenuIndexMedia,
};

void bt_hid_submenu_callback(void* context, uint32_t index) {
    furi_assert(context);
    BtHid* app = context;
    if(index == BtHidSubmenuIndexKeynote) {
        app->view_id = BtHidViewKeynote;
        view_dispatcher_switch_to_view(app->view_dispatcher, BtHidViewKeynote);
    } else if(index == BtHidSubmenuIndexMedia) {
        app->view_id = BtHidViewMedia;
        view_dispatcher_switch_to_view(app->view_dispatcher, BtHidViewMedia);
    }
}

void bt_hid_dialog_callback(DialogExResult result, void* context) {
    furi_assert(context);
    BtHid* app = context;
    if(result == DialogExResultLeft) {
        // TODO switch to Submenu after Media is done
        view_dispatcher_stop(app->view_dispatcher);
    } else if(result == DialogExResultRight) {
        view_dispatcher_switch_to_view(app->view_dispatcher, app->view_id);
    }
}

uint32_t bt_hid_exit_confirm_view(void* context) {
    return BtHidViewExitConfirm;
}

uint32_t bt_hid_exit(void* context) {
    return VIEW_NONE;
}

void bt_hid_connection_status_changed_callback(BtStatus status, void* context) {
    furi_assert(context);
    BtHid* bt_hid = context;
    bool connected = (status == BtStatusConnected);
    if(connected) {
        notification_internal_message(bt_hid->notifications, &sequence_set_blue_255);
    } else {
        notification_internal_message(bt_hid->notifications, &sequence_reset_blue);
    }
    bt_hid_keynote_set_connected_status(bt_hid->bt_hid_keynote, connected);
    bt_hid_media_set_connected_status(bt_hid->bt_hid_media, connected);
}

BtHid* bt_hid_app_alloc() {
    BtHid* app = furi_alloc(sizeof(BtHid));

    // Load Bluetooth settings
    bt_settings_load(&app->bt_settings);

    // Gui
    app->gui = furi_record_open("gui");

    // Bt
    app->bt = furi_record_open("bt");

    // Notifications
    app->notifications = furi_record_open("notification");

    // View dispatcher
    app->view_dispatcher = view_dispatcher_alloc();
    view_dispatcher_enable_queue(app->view_dispatcher);
    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);

    // Submenu view
    app->submenu = submenu_alloc();
    submenu_add_item(
        app->submenu, "Keynote", BtHidSubmenuIndexKeynote, bt_hid_submenu_callback, app);
    submenu_add_item(
        app->submenu, "Media player", BtHidSubmenuIndexMedia, bt_hid_submenu_callback, app);
    view_set_previous_callback(submenu_get_view(app->submenu), bt_hid_exit);
    view_dispatcher_add_view(
        app->view_dispatcher, BtHidViewSubmenu, submenu_get_view(app->submenu));

    // Dialog view
    app->dialog = dialog_ex_alloc();
    dialog_ex_set_result_callback(app->dialog, bt_hid_dialog_callback);
    dialog_ex_set_context(app->dialog, app);
    dialog_ex_set_left_button_text(app->dialog, "Exit");
    dialog_ex_set_right_button_text(app->dialog, "Stay");
    dialog_ex_set_header(app->dialog, "Close current app?", 16, 12, AlignLeft, AlignTop);
    view_dispatcher_add_view(
        app->view_dispatcher, BtHidViewExitConfirm, dialog_ex_get_view(app->dialog));

    // Keynote view
    app->bt_hid_keynote = bt_hid_keynote_alloc();
    view_set_previous_callback(
        bt_hid_keynote_get_view(app->bt_hid_keynote), bt_hid_exit_confirm_view);
    view_dispatcher_add_view(
        app->view_dispatcher, BtHidViewKeynote, bt_hid_keynote_get_view(app->bt_hid_keynote));

    // Media view
    app->bt_hid_media = bt_hid_media_alloc();
    view_set_previous_callback(bt_hid_media_get_view(app->bt_hid_media), bt_hid_exit_confirm_view);
    view_dispatcher_add_view(
        app->view_dispatcher, BtHidViewMedia, bt_hid_media_get_view(app->bt_hid_media));

    // TODO switch to menu after Media is done
    view_dispatcher_switch_to_view(app->view_dispatcher, BtHidViewKeynote);

    return app;
}

void bt_hid_app_free(BtHid* app) {
    furi_assert(app);

    // Reset notification
    notification_internal_message(app->notifications, &sequence_reset_blue);

    // Free views
    view_dispatcher_remove_view(app->view_dispatcher, BtHidViewSubmenu);
    submenu_free(app->submenu);
    view_dispatcher_remove_view(app->view_dispatcher, BtHidViewExitConfirm);
    dialog_ex_free(app->dialog);
    view_dispatcher_remove_view(app->view_dispatcher, BtHidViewKeynote);
    bt_hid_keynote_free(app->bt_hid_keynote);
    view_dispatcher_remove_view(app->view_dispatcher, BtHidViewMedia);
    bt_hid_media_free(app->bt_hid_media);
    view_dispatcher_free(app->view_dispatcher);

    // Close records
    furi_record_close("gui");
    app->gui = NULL;
    furi_record_close("notification");
    app->notifications = NULL;
    furi_record_close("bt");
    app->bt = NULL;

    // Free rest
    free(app);
}

int32_t bt_hid_app(void* p) {
    // Switch profile to Hid
    BtHid* app = bt_hid_app_alloc();
    bt_set_status_changed_callback(app->bt, bt_hid_connection_status_changed_callback, app);
    // Change profile
    if(!bt_set_profile(app->bt, BtProfileHidKeyboard)) {
        FURI_LOG_E(TAG, "Failed to switch profile");
        bt_hid_app_free(app);
        return -1;
    }
    furi_hal_bt_start_advertising();

    view_dispatcher_run(app->view_dispatcher);

    bt_set_status_changed_callback(app->bt, NULL, NULL);
    // Stop advertising if bt was off
    if(app->bt_settings.enabled) {
        furi_hal_bt_stop_advertising();
    }
    // Change back profile to Serial
    bt_set_profile(app->bt, BtProfileSerial);

    bt_hid_app_free(app);

    return 0;
}