/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * mmcli -- Control modem status & access information from the command line
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Copyright (C) 2012 Google, Inc.
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <string.h>

#include <glib.h>
#include <gio/gio.h>

#include <libmm-glib.h>

#include "mmcli.h"
#include "mmcli-common.h"

/* Context */
typedef struct {
    MMManager *manager;
    GCancellable *cancellable;
    MMObject *object;
    MMModemMessaging *modem_messaging;
} Context;
static Context *ctx;

/* Options */
static gboolean list_flag;
static gchar *create_str;
static gchar *delete_str;

static GOptionEntry entries[] = {
    { "list-sms", 0, 0, G_OPTION_ARG_NONE, &list_flag,
      "List SMS messages available in a given modem",
      NULL
    },
    { "create-sms", 0, 0, G_OPTION_ARG_STRING, &create_str,
      "Create a new SMS in a given modem",
      "[\"key=value,...\"]"
    },
    { "delete-sms", 0, 0, G_OPTION_ARG_STRING, &delete_str,
      "Delete a SMS from a given modem",
      "[PATH]"
    },
    { NULL }
};

GOptionGroup *
mmcli_modem_messaging_get_option_group (void)
{
	GOptionGroup *group;

	group = g_option_group_new ("messaging",
	                            "Messaging options",
	                            "Show Messaging options",
	                            NULL,
	                            NULL);
	g_option_group_add_entries (group, entries);

	return group;
}

gboolean
mmcli_modem_messaging_options_enabled (void)
{
    static guint n_actions = 0;
    static gboolean checked = FALSE;

    if (checked)
        return !!n_actions;

    n_actions = (list_flag +
                 !!create_str +
                 !!delete_str);

    if (n_actions > 1) {
        g_printerr ("error: too many Messaging actions requested\n");
        exit (EXIT_FAILURE);
    }

    checked = TRUE;
    return !!n_actions;
}

static void
context_free (Context *ctx)
{
    if (!ctx)
        return;

    if (ctx->cancellable)
        g_object_unref (ctx->cancellable);
    if (ctx->modem_messaging)
        g_object_unref (ctx->modem_messaging);
    if (ctx->object)
        g_object_unref (ctx->object);
    if (ctx->manager)
        g_object_unref (ctx->manager);
    g_free (ctx);
}

static void
ensure_modem_messaging (void)
{
    if (mm_modem_get_state (mm_object_peek_modem (ctx->object)) < MM_MODEM_STATE_ENABLED) {
        g_printerr ("error: modem not enabled yet\n");
        exit (EXIT_FAILURE);
    }

    if (!ctx->modem_messaging) {
        g_printerr ("error: modem has no messaging capabilities\n");
        exit (EXIT_FAILURE);
    }

    /* Success */
}

void
mmcli_modem_messaging_shutdown (void)
{
    context_free (ctx);
}

static void
print_sms_short_info (MMSms *sms)
{
    g_print ("\t%s (%s)\n",
             mm_sms_get_path (sms),
             mm_sms_state_get_string (mm_sms_get_state (sms)));
}

static void
list_process_reply (GList        *result,
                    const GError *error)
{
    if (error) {
        g_printerr ("error: couldn't list SMS: '%s'\n",
                    error->message);
        exit (EXIT_FAILURE);
    }

    g_print ("\n");
    if (!result) {
        g_print ("No SMS messages were found\n");
    } else {
        GList *l;

        g_print ("Found %u SMS messages:\n", g_list_length (result));
        for (l = result; l; l = g_list_next (l)) {
            MMSms *sms = MM_SMS (l->data);

            print_sms_short_info (sms);
            g_object_unref (sms);
        }
        g_list_free (result);
    }
}

static void
list_ready (MMModemMessaging *modem,
            GAsyncResult     *result,
            gpointer          nothing)
{
    GList *operation_result;
    GError *error = NULL;

    operation_result = mm_modem_messaging_list_finish (modem, result, &error);
    list_process_reply (operation_result, error);

    mmcli_async_operation_done ();
}

static void
create_process_reply (MMSms        *sms,
                      const GError *error)
{
    if (!sms) {
        g_printerr ("error: couldn't create new SMS: '%s'\n",
                    error ? error->message : "unknown error");
        exit (EXIT_FAILURE);
    }

    g_print ("Successfully created new SMS:\n");
    print_sms_short_info (sms);
    g_object_unref (sms);
}

static void
create_ready (MMModemMessaging *modem,
              GAsyncResult     *result,
              gpointer          nothing)
{
    MMSms *sms;
    GError *error = NULL;

    sms = mm_modem_messaging_create_finish (modem, result, &error);
    create_process_reply (sms, error);

    mmcli_async_operation_done ();
}

static void
delete_process_reply (gboolean      result,
                      const GError *error)
{
    if (!result) {
        g_printerr ("error: couldn't delete SMS: '%s'\n",
                    error ? error->message : "unknown error");
        exit (EXIT_FAILURE);
    }

    g_print ("successfully deleted SMS from modem\n");
}

static void
delete_ready (MMModemMessaging *modem,
              GAsyncResult     *result,
              gpointer          nothing)
{
    gboolean operation_result;
    GError *error = NULL;

    operation_result = mm_modem_messaging_delete_finish (modem, result, &error);
    delete_process_reply (operation_result, error);

    mmcli_async_operation_done ();
}

static void
get_modem_ready (GObject      *source,
                 GAsyncResult *result,
                 gpointer      none)
{
    ctx->object = mmcli_get_modem_finish (result, &ctx->manager);
    ctx->modem_messaging = mm_object_get_modem_messaging (ctx->object);

    /* Setup operation timeout */
    if (ctx->modem_messaging)
        mmcli_force_operation_timeout (G_DBUS_PROXY (ctx->modem_messaging));

    ensure_modem_messaging ();

    /* Request to list SMS? */
    if (list_flag) {
        g_debug ("Asynchronously listing SMS in modem...");
        mm_modem_messaging_list (ctx->modem_messaging,
                                 ctx->cancellable,
                                 (GAsyncReadyCallback)list_ready,
                                 NULL);
        return;
    }

    /* Request to create a new SMS? */
    if (create_str) {
        GError *error = NULL;
        MMSmsProperties *properties;

        properties = mm_sms_properties_new_from_string (create_str, &error);
        if (!properties) {
            g_printerr ("Error parsing properties string: '%s'\n", error->message);
            exit (EXIT_FAILURE);
        }

        g_debug ("Asynchronously creating new SMS in modem...");
        mm_modem_messaging_create (ctx->modem_messaging,
                                   properties,
                                   ctx->cancellable,
                                   (GAsyncReadyCallback)create_ready,
                                   NULL);
        g_object_unref (properties);
        return;
    }

    /* Request to delete a given SMS? */
    if (delete_str) {
        mm_modem_messaging_delete (ctx->modem_messaging,
                                   delete_str,
                                   ctx->cancellable,
                                   (GAsyncReadyCallback)delete_ready,
                                   NULL);
        return;
    }

    g_warn_if_reached ();
}

void
mmcli_modem_messaging_run_asynchronous (GDBusConnection *connection,
                                        GCancellable    *cancellable)
{
    /* Initialize context */
    ctx = g_new0 (Context, 1);
    if (cancellable)
        ctx->cancellable = g_object_ref (cancellable);

    /* Get proper modem */
    mmcli_get_modem (connection,
                     mmcli_get_common_modem_string (),
                     cancellable,
                     (GAsyncReadyCallback)get_modem_ready,
                     NULL);
}

void
mmcli_modem_messaging_run_synchronous (GDBusConnection *connection)
{
    GError *error = NULL;

    /* Initialize context */
    ctx = g_new0 (Context, 1);
    ctx->object = mmcli_get_modem_sync (connection,
                                        mmcli_get_common_modem_string (),
                                        &ctx->manager);
    ctx->modem_messaging = mm_object_get_modem_messaging (ctx->object);

    /* Setup operation timeout */
    if (ctx->modem_messaging)
        mmcli_force_operation_timeout (G_DBUS_PROXY (ctx->modem_messaging));

    ensure_modem_messaging ();

    /* Request to list the SMS? */
    if (list_flag) {
        GList *result;

        g_debug ("Synchronously listing SMS messages...");
        result = mm_modem_messaging_list_sync (ctx->modem_messaging, NULL, &error);
        list_process_reply (result, error);
        return;
    }

    /* Request to create a new SMS? */
    if (create_str) {
        MMSms *sms;
        GError *error = NULL;
        MMSmsProperties *properties;

        properties = mm_sms_properties_new_from_string (create_str, &error);
        if (!properties) {
            g_printerr ("Error parsing properties string: '%s'\n", error->message);
            exit (EXIT_FAILURE);
        }

        g_debug ("Synchronously creating new SMS in modem...");
        sms = mm_modem_messaging_create_sync (ctx->modem_messaging,
                                              properties,
                                              NULL,
                                              &error);
        g_object_unref (properties);

        create_process_reply (sms, error);
        return;
    }

    /* Request to delete a given SMS? */
    if (delete_str) {
        gboolean result;

        result = mm_modem_messaging_delete_sync (ctx->modem_messaging,
                                                 delete_str,
                                                 NULL,
                                                 &error);

        delete_process_reply (result, error);
        return;
    }

    g_warn_if_reached ();
}