/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2013 Red Hat, Inc.
 */

/**
 * SECTION:nmt-editor
 * @short_description: Connection editing form
 *
 * #NmtEditor is the top-level form for editing a connection.
 */

#include "libnm-client-aux-extern/nm-default-client.h"

#include "nmt-editor.h"

#include "libnm-core-aux-intern/nm-libnm-core-utils.h"
#include "nm-utils.h"

#include "nmtui.h"

#include "nm-editor-utils.h"
#include "nmt-utils.h"

#include "nmt-device-entry.h"
#include "nmt-mac-entry.h"
#include "nmt-mtu-entry.h"

#include "nmt-page-bond.h"
#include "nmt-page-bond-port.h"
#include "nmt-page-bridge.h"
#include "nmt-page-bridge-port.h"
#include "nmt-page-dsl.h"
#include "nmt-page-ethernet.h"
#include "nmt-page-infiniband.h"
#include "nmt-page-ip-tunnel.h"
#include "nmt-page-ip4.h"
#include "nmt-page-ip6.h"
#include "nmt-page-loopback.h"
#include "nmt-page-macsec.h"
#include "nmt-page-ppp.h"
#include "nmt-page-team.h"
#include "nmt-page-team-port.h"
#include "nmt-page-veth.h"
#include "nmt-page-vlan.h"
#include "nmt-page-wifi.h"
#include "nmt-page-wireguard.h"

#include "libnmc-setting/nm-meta-setting-access.h"

G_DEFINE_TYPE(NmtEditor, nmt_editor, NMT_TYPE_NEWT_FORM)

#define NMT_EDITOR_GET_PRIVATE(o) \
    (G_TYPE_INSTANCE_GET_PRIVATE((o), NMT_TYPE_EDITOR, NmtEditorPrivate))

typedef struct {
    NMConnection *orig_connection;
    NMConnection *edit_connection;

    NMEditorConnectionTypeData *type_data;

    GSList        *pages;
    NmtNewtWidget *ok, *cancel;
    gboolean       running;
} NmtEditorPrivate;

enum {
    PROP_0,
    PROP_CONNECTION,
    PROP_TYPE_DATA,

    LAST_PROP
};

/**
 * nmt_editor_new:
 * @connection: the #NMConnection to edit
 *
 * Creates a new #NmtEditor to edit @connection.
 *
 * Returns: a new #NmtEditor
 */
NmtNewtForm *
nmt_editor_new(NMConnection *connection)
{
    NMEditorConnectionTypeData *type_data;

    type_data = nm_editor_utils_get_connection_type_data(connection);
    if (!type_data) {
        NMSettingConnection *s_con;

        s_con = nm_connection_get_setting_connection(connection);
        if (s_con) {
            nmt_newt_message_dialog(_("Could not create editor for connection '%s' of type '%s'."),
                                    nm_connection_get_id(connection),
                                    nm_setting_connection_get_connection_type(s_con));
        } else {
            nmt_newt_message_dialog(_("Could not create editor for invalid connection '%s'."),
                                    nm_connection_get_id(connection));
        }

        return NULL;
    }

    return g_object_new(NMT_TYPE_EDITOR,
                        "connection",
                        connection,
                        "type-data",
                        type_data,
                        "title",
                        _("Edit Connection"),
                        "fullscreen-vertical",
                        TRUE,
                        NULL);
}

static void
nmt_editor_init(NmtEditor *entry)
{}

static void
connection_updated(GObject *connection, GAsyncResult *result, gpointer op)
{
    GError *error = NULL;

    nm_remote_connection_commit_changes_finish(NM_REMOTE_CONNECTION(connection), result, &error);
    nmt_sync_op_complete_boolean(op, error == NULL, error);
    g_clear_error(&error);
}

static void
connection_added(GObject *client, GAsyncResult *result, gpointer op)
{
    NMRemoteConnection *connection;
    GError             *error = NULL;

    connection = nm_client_add_connection_finish(NM_CLIENT(client), result, &error);
    nmt_sync_op_complete_boolean(op, error == NULL, error);
    g_clear_object(&connection);
    g_clear_error(&error);
}

static void
page_saved(gpointer data, gpointer user_data)
{
    NmtEditorPage *page = data;

    nmt_editor_page_saved(page);
}

static void
save_connection_and_exit(NmtNewtButton *button, gpointer user_data)
{
    NmtEditor        *editor = user_data;
    NmtEditorPrivate *priv   = NMT_EDITOR_GET_PRIVATE(editor);
    NmtSyncOp         op;
    GError           *error      = NULL;
    gs_free char     *gw_warning = NULL;

    nm_connection_replace_settings_from_connection(priv->orig_connection, priv->edit_connection);

    gw_warning = nm_connection_get_unreachable_gateways_warning(priv->orig_connection, TRUE);
    if (gw_warning) {
        nmt_newt_message_dialog(_("Warning: %s"), gw_warning);
    }

    nmt_sync_op_init(&op);
    if (NM_IS_REMOTE_CONNECTION(priv->orig_connection)) {
        nm_remote_connection_commit_changes_async(NM_REMOTE_CONNECTION(priv->orig_connection),
                                                  TRUE,
                                                  NULL,
                                                  connection_updated,
                                                  &op);
        if (!nmt_sync_op_wait_boolean(&op, &error)) {
            nmt_newt_message_dialog(_("Unable to save connection: %s"), error->message);
            g_error_free(error);
            return;
        }

        /* Clear secrets so they don't lay around in memory; they'll get
         * requested again anyway next time the connection is edited.
         */
        nm_connection_clear_secrets(priv->orig_connection);
    } else {
        nm_client_add_connection_async(nm_client,
                                       priv->orig_connection,
                                       TRUE,
                                       NULL,
                                       connection_added,
                                       &op);
        if (!nmt_sync_op_wait_boolean(&op, &error)) {
            nmt_newt_message_dialog(_("Unable to add new connection: %s"), error->message);
            g_error_free(error);
            return;
        }
    }

    /* Let the page know that it was saved. */
    g_slist_foreach(priv->pages, page_saved, NULL);

    nmt_newt_form_quit(NMT_NEWT_FORM(editor));
}

static NMConnection *
build_edit_connection(NMConnection *orig_connection)
{
    NMConnection *edit_connection;
    GVariant     *settings, *secrets;
    GVariantIter  iter;
    const char   *setting_name;

    edit_connection = nm_simple_connection_new_clone(orig_connection);

    if (!NM_IS_REMOTE_CONNECTION(orig_connection))
        return edit_connection;

    settings = nm_connection_to_dbus(orig_connection, NM_CONNECTION_SERIALIZE_WITH_NON_SECRET);
    g_variant_iter_init(&iter, settings);
    while (g_variant_iter_next(&iter, "{&s@a{sv}}", &setting_name, NULL)) {
        if (!nm_meta_setting_info_editor_has_secrets(
                nm_meta_setting_info_editor_find_by_name(setting_name, FALSE)))
            continue;
        /* FIXME: error handling */
        secrets = nmt_sync_get_secrets(NM_REMOTE_CONNECTION(orig_connection), setting_name, NULL);
        if (secrets) {
            (void) nm_connection_update_secrets(edit_connection, setting_name, secrets, NULL);
            g_variant_unref(secrets);
        }
    }
    g_variant_unref(settings);

    return edit_connection;
}

static gboolean
permissions_transform_to_allusers(GBinding     *binding,
                                  const GValue *source_value,
                                  GValue       *target_value,
                                  gpointer      user_data)
{
    char **perms = g_value_get_boxed(source_value);

    g_value_set_boolean(target_value, g_strv_length(perms) == 0);
    return TRUE;
}

static gboolean
permissions_transform_from_allusers(GBinding     *binding,
                                    const GValue *source_value,
                                    GValue       *target_value,
                                    gpointer      user_data)
{
    gboolean allusers = g_value_get_boolean(source_value);
    char   **perms    = NULL;

    if (!allusers) {
        perms = g_new(char *, 2);

        perms[0] = g_strdup_printf("user:%s:", g_get_user_name());
        perms[1] = NULL;
    }
    g_value_take_boxed(target_value, perms);
    return TRUE;
}

static NmtNewtWidget *
add_sections_for_page(NmtEditor *editor, NmtEditorGrid *grid, NmtEditorPage *page)
{
    NmtEditorPrivate *priv          = NMT_EDITOR_GET_PRIVATE(editor);
    NmtNewtWidget    *first_section = NULL;
    const GSList     *sections, *iter;

    g_return_val_if_fail(NMT_IS_EDITOR_PAGE(page), NULL);

    priv->pages = g_slist_prepend(priv->pages, page);

    sections = nmt_editor_page_get_sections(page);
    for (iter = sections; iter; iter = iter->next) {
        if (!first_section)
            first_section = iter->data;
        nmt_editor_grid_append(grid, NULL, iter->data, NULL);
    }

    return first_section;
}

static void
nmt_editor_constructed(GObject *object)
{
    NmtEditor           *editor   = NMT_EDITOR(object);
    NmtEditorPrivate    *priv     = NMT_EDITOR_GET_PRIVATE(editor);
    NmtDeviceEntry      *deventry = NULL;
    NMSettingConnection *s_con;
    NmtNewtWidget       *vbox, *widget, *buttons;
    NmtEditorGrid       *grid;
    const char          *deventry_label;
    GType                hardware_type;
    const char          *port_type;
    NmtEditorPage       *page;
    gboolean             show_select_button;

    if (G_OBJECT_CLASS(nmt_editor_parent_class)->constructed)
        G_OBJECT_CLASS(nmt_editor_parent_class)->constructed(object);

    priv->edit_connection = build_edit_connection(priv->orig_connection);

    vbox = nmt_newt_grid_new();

    s_con = nm_connection_get_setting_connection(priv->edit_connection);

    grid = NMT_EDITOR_GRID(nmt_editor_grid_new());
    nmt_newt_grid_add(NMT_NEWT_GRID(vbox), NMT_NEWT_WIDGET(grid), 0, 0);

    /* Add the top widgets */

    widget = nmt_newt_entry_new(40, NMT_NEWT_ENTRY_NONEMPTY);
    g_object_bind_property(s_con,
                           NM_SETTING_CONNECTION_ID,
                           widget,
                           "text",
                           G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
    nmt_editor_grid_append(grid, _("Profile name"), widget, NULL);

    if (priv->type_data->virtual) {
        hardware_type      = G_TYPE_NONE;
        show_select_button = FALSE;
    } else {
        hardware_type      = priv->type_data->device_type;
        show_select_button = TRUE;
    }

    if (nm_connection_is_type(priv->edit_connection, NM_SETTING_LOOPBACK_SETTING_NAME)) {
        g_object_set(s_con, NM_SETTING_CONNECTION_INTERFACE_NAME, "lo", NULL);
    } else {
        /* For connections involving multiple network devices, clarify which one
        * NMSettingConnection:interface-name refers to.
        */
        if (nm_connection_is_type(priv->edit_connection, NM_SETTING_PPPOE_SETTING_NAME))
            deventry_label = _("Ethernet device");
        else
            deventry_label = _("Device");

        widget = nmt_device_entry_new(deventry_label, 40, hardware_type, show_select_button);
        nmt_editor_grid_append(grid, NULL, widget, NULL);
        deventry = NMT_DEVICE_ENTRY(widget);
        g_object_bind_property(s_con,
                               NM_SETTING_CONNECTION_INTERFACE_NAME,
                               deventry,
                               "interface-name",
                               G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
    }

    nmt_editor_grid_append(grid, NULL, nmt_newt_separator_new(), NULL);

    /* Now add the various pages... */

    if (nm_connection_is_type(priv->edit_connection, NM_SETTING_BOND_SETTING_NAME))
        page = nmt_page_bond_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_BRIDGE_SETTING_NAME))
        page = nmt_page_bridge_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_INFINIBAND_SETTING_NAME))
        page = nmt_page_infiniband_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_MACSEC_SETTING_NAME))
        page = nmt_page_macsec_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_PPPOE_SETTING_NAME))
        page = nmt_page_dsl_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_TEAM_SETTING_NAME))
        page = nmt_page_team_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_VETH_SETTING_NAME))
        page = nmt_page_veth_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_VLAN_SETTING_NAME))
        page = nmt_page_vlan_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_WIRED_SETTING_NAME))
        page = nmt_page_ethernet_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_LOOPBACK_SETTING_NAME))
        page = nmt_page_loopback_new(priv->edit_connection);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_WIRELESS_SETTING_NAME))
        page = nmt_page_wifi_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_IP_TUNNEL_SETTING_NAME))
        page = nmt_page_ip_tunnel_new(priv->edit_connection, deventry);
    else if (nm_connection_is_type(priv->edit_connection, NM_SETTING_WIREGUARD_SETTING_NAME))
        page = nmt_page_wireguard_new(priv->edit_connection, deventry);
    else
        g_return_if_reached();

    add_sections_for_page(editor, grid, page);
    nmt_editor_grid_append(grid, NULL, nmt_newt_separator_new(), NULL);

    port_type = nm_setting_connection_get_port_type(s_con);
    if (port_type) {
        if (!strcmp(port_type, NM_SETTING_BRIDGE_SETTING_NAME))
            add_sections_for_page(editor, grid, nmt_page_bridge_port_new(priv->edit_connection));
        else if (!strcmp(port_type, NM_SETTING_TEAM_SETTING_NAME))
            add_sections_for_page(editor, grid, nmt_page_team_port_new(priv->edit_connection));
        else if (nm_streq(port_type, NM_SETTING_BOND_SETTING_NAME))
            add_sections_for_page(editor, grid, nmt_page_bond_port_new(priv->edit_connection));
    } else {
        NmtNewtWidget *section;

        section = add_sections_for_page(editor, grid, nmt_page_ip4_new(priv->edit_connection));

        /* Add a separator between ip4 and ip6 that's only visible if ip4 is open */
        widget = nmt_newt_separator_new();
        g_object_bind_property(section, "open", widget, "visible", G_BINDING_SYNC_CREATE);
        nmt_editor_grid_append(grid, NULL, widget, NULL);

        add_sections_for_page(editor, grid, nmt_page_ip6_new(priv->edit_connection));

        nmt_editor_grid_append(grid, NULL, nmt_newt_separator_new(), NULL);
    }

    /* And finally the bottom widgets */

    widget = nmt_newt_checkbox_new(_("Automatically connect"));
    g_object_bind_property(s_con,
                           NM_SETTING_CONNECTION_AUTOCONNECT,
                           widget,
                           "active",
                           G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
    nmt_editor_grid_append(grid, NULL, widget, NULL);

    widget = nmt_newt_checkbox_new(_("Available to all users"));
    g_object_bind_property_full(s_con,
                                NM_SETTING_CONNECTION_PERMISSIONS,
                                widget,
                                "active",
                                G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE,
                                permissions_transform_to_allusers,
                                permissions_transform_from_allusers,
                                NULL,
                                NULL);
    nmt_editor_grid_append(grid, NULL, widget, NULL);

    /* And the button box */

    buttons = nmt_newt_button_box_new(NMT_NEWT_BUTTON_BOX_HORIZONTAL);
    nmt_newt_grid_add(NMT_NEWT_GRID(vbox), buttons, 0, 1);
    nmt_newt_widget_set_padding(buttons, 0, 1, 0, 0);

    priv->cancel = nmt_newt_button_box_add_end(NMT_NEWT_BUTTON_BOX(buttons), _("Cancel"));
    nmt_newt_widget_set_exit_on_activate(priv->cancel, TRUE);

    priv->ok = nmt_newt_button_box_add_end(NMT_NEWT_BUTTON_BOX(buttons), _("OK"));
    g_signal_connect(priv->ok, "clicked", G_CALLBACK(save_connection_and_exit), editor);
    g_object_bind_property(NMT_NEWT_WIDGET(grid),
                           "valid",
                           priv->ok,
                           "sensitive",
                           G_BINDING_SYNC_CREATE);

    nmt_newt_form_set_content(NMT_NEWT_FORM(editor), vbox);
}

static void
nmt_editor_finalize(GObject *object)
{
    NmtEditorPrivate *priv = NMT_EDITOR_GET_PRIVATE(object);

    g_clear_object(&priv->orig_connection);
    g_clear_object(&priv->edit_connection);

    g_slist_free_full(priv->pages, g_object_unref);

    g_clear_object(&priv->ok);
    g_clear_object(&priv->cancel);

    G_OBJECT_CLASS(nmt_editor_parent_class)->finalize(object);
}

static void
nmt_editor_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
    NmtEditorPrivate *priv = NMT_EDITOR_GET_PRIVATE(object);

    switch (prop_id) {
    case PROP_CONNECTION:
        priv->orig_connection = g_value_dup_object(value);
        break;
    case PROP_TYPE_DATA:
        priv->type_data = g_value_get_pointer(value);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
        break;
    }
}

static void
nmt_editor_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
    NmtEditorPrivate *priv = NMT_EDITOR_GET_PRIVATE(object);

    switch (prop_id) {
    case PROP_CONNECTION:
        g_value_set_object(value, priv->orig_connection);
        break;
    case PROP_TYPE_DATA:
        g_value_set_pointer(value, priv->type_data);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
        break;
    }
}

static void
nmt_editor_class_init(NmtEditorClass *entry_class)
{
    GObjectClass *object_class = G_OBJECT_CLASS(entry_class);

    g_type_class_add_private(entry_class, sizeof(NmtEditorPrivate));

    /* virtual methods */
    object_class->constructed  = nmt_editor_constructed;
    object_class->set_property = nmt_editor_set_property;
    object_class->get_property = nmt_editor_get_property;
    object_class->finalize     = nmt_editor_finalize;

    /**
     * NmtEditor:connection:
     *
     * The connection being edited.
     */
    g_object_class_install_property(
        object_class,
        PROP_CONNECTION,
        g_param_spec_object("connection",
                            "",
                            "",
                            NM_TYPE_CONNECTION,
                            G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
    /**
     * NmtEditor:type-data:
     *
     * The #NmEditorConnectionTypeData for #NmtEditor:connection.
     */
    g_object_class_install_property(
        object_class,
        PROP_TYPE_DATA,
        g_param_spec_pointer("type-data",
                             "",
                             "",
                             G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
}
