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#include <libintl.h>
#include <glib/gi18n.h>
#include <libsoup/soup.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include "dive.h"
#include "display-gtk.h"
enum {
DD_STATUS_OK,
DD_STATUS_ERROR_CONNECT,
DD_STATUS_ERROR_ID,
DD_STATUS_ERROR_PARSE,
};
static const gchar *download_dialog_status_text(const gint status)
{
switch (status) {
case DD_STATUS_ERROR_CONNECT:
return _("Connection Error: ");
case DD_STATUS_ERROR_ID:
return _("Invalid user identifier!");
case DD_STATUS_ERROR_PARSE:
return _("Cannot parse response!");
}
return _("Download Success!");
}
/* provides a state of the download dialog contents and the downloaded xml */
struct download_dialog_state {
GtkWidget *uid;
GtkWidget *status;
GtkWidget *apply;
gchar *xmldata;
};
/* this method uses libsoup as a backend. if there are some portability,
* compatibility or speed issues, libcurl is a better choice. */
gboolean webservice_request_user_xml(const gchar *user_id,
gchar **data,
guint *len,
guint *status_code)
{
SoupMessage *msg;
SoupSession *session;
gboolean ret = FALSE;
gchar url[80] = {0};
session = soup_session_async_new();
strcat(url, "http://api.hohndel.org/api/mydives/");
strcat(url, user_id);
strcat(url, "/xml");
msg = soup_message_new("GET", url);
soup_session_send_message(session, msg);
if SOUP_STATUS_IS_SUCCESSFUL(msg->status_code) {
*len = (guint)msg->response_body->length;
*data = strdup((gchar *)msg->response_body->data);
ret = TRUE;
} else {
*len = 0;
*data = NULL;
}
*status_code = msg->status_code;
soup_session_abort(session);
g_object_unref(G_OBJECT(msg));
g_object_unref(G_OBJECT(session));
return ret;
}
/* requires that there is a <download> or <error> tag under the <root> tag */
static void download_dialog_traverse_xml(xmlNodePtr node, guint *download_status)
{
xmlNodePtr cur_node;
for (cur_node = node; cur_node; cur_node = cur_node->next) {
if ((!strcmp(cur_node->name, (const gchar *)"download")) &&
(!strcmp(xmlNodeGetContent(cur_node), (const gchar *)"ok"))) {
*download_status = DD_STATUS_OK;
return;
} else if (!strcmp(cur_node->name, (const gchar *)"error")) {
*download_status = DD_STATUS_ERROR_ID;
return;
}
}
}
static guint download_dialog_parse_response(gchar *xmldata, guint len)
{
xmlNodePtr root;
xmlDocPtr doc = xmlParseMemory(xmldata, len);
guint status = DD_STATUS_ERROR_PARSE;
if (!doc)
return DD_STATUS_ERROR_PARSE;
root = xmlDocGetRootElement(doc);
if (!root) {
status = DD_STATUS_ERROR_PARSE;
goto end;
}
if (root->children)
download_dialog_traverse_xml(root->children, &status);
end:
xmlFreeDoc(doc);
return status;
}
static void download_dialog_connect_cb(GtkWidget *w, gpointer data)
{
struct download_dialog_state *state = (struct download_dialog_state *)data;
const gchar *uid = gtk_entry_get_text(GTK_ENTRY(state->uid));
guint len, status_connect, status_xml;
gchar *xmldata;
gboolean ret;
gchar err[128] = {0};
gtk_label_set_text(GTK_LABEL(state->status), _("Connecting..."));
gtk_widget_set_sensitive(state->apply, FALSE);
ret = webservice_request_user_xml(uid, &xmldata, &len, &status_connect);
if (ret) {
status_xml = download_dialog_parse_response(xmldata, len);
gtk_label_set_text(GTK_LABEL(state->status), download_dialog_status_text(status_xml));
if (status_xml != DD_STATUS_OK)
ret = FALSE;
} else {
sprintf(err, "%s %u!", download_dialog_status_text(DD_STATUS_ERROR_CONNECT), status_connect);
gtk_label_set_text(GTK_LABEL(state->status), err);
}
state->xmldata = xmldata;
gtk_widget_set_sensitive(state->apply, ret);
}
static void download_dialog_release_xml(struct download_dialog_state *state)
{
if (state->xmldata)
free((void *)state->xmldata);
}
static void download_dialog_delete(GtkWidget *w, gpointer data)
{
struct download_dialog_state *state = (struct download_dialog_state *)data;
download_dialog_release_xml(state);
}
void webservice_download_dialog(void)
{
const guint pad = 6;
/* user entered value should be stored in the config */
const gchar *current_uid = "41TFEC8ZMVD5DBE0JPBBU5JDDA2Y6T";
GtkWidget *dialog, *vbox, *status, *info, *uid;
GtkWidget *frame_uid, *frame_status, *download, *image, *apply;
struct download_dialog_state state = {NULL};
int result;
dialog = gtk_dialog_new_with_buttons(_("Download From Web Service"),
GTK_WINDOW(main_window),
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_STOCK_APPLY,
GTK_RESPONSE_ACCEPT,
GTK_STOCK_CANCEL,
GTK_RESPONSE_REJECT,
NULL);
apply = gtk_dialog_get_widget_for_response(GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT);
gtk_widget_set_sensitive(apply, FALSE);
vbox = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
info = gtk_label_new(_("Enter a user identifier and press 'Download'."
" Once the download is complete you can press 'Apply'"
" if you wish to apply the changes."));
gtk_label_set_line_wrap(GTK_LABEL(info), TRUE);
gtk_box_pack_start(GTK_BOX(vbox), info, FALSE, TRUE, 0);
gtk_misc_set_padding(GTK_MISC(info), pad, pad);
frame_uid = gtk_frame_new(_("User Identifier"));
gtk_box_pack_start(GTK_BOX(vbox), frame_uid, FALSE, TRUE, pad);
uid = gtk_entry_new();
gtk_container_add(GTK_CONTAINER(frame_uid), uid);
gtk_entry_set_max_length(GTK_ENTRY(uid), 30);
gtk_entry_set_text(GTK_ENTRY(uid), current_uid);
download = gtk_button_new_with_label(_(" Download"));
image = gtk_image_new_from_stock(GTK_STOCK_CONNECT, GTK_ICON_SIZE_MENU);
gtk_button_set_image(GTK_BUTTON(download), image);
gtk_box_pack_start(GTK_BOX(vbox), download, FALSE, TRUE, pad);
g_signal_connect(download, "clicked", G_CALLBACK(download_dialog_connect_cb), &state);
frame_status = gtk_frame_new(_("Status"));
status = gtk_label_new(_("Idle"));
gtk_box_pack_start(GTK_BOX(vbox), frame_status, FALSE, TRUE, pad);
gtk_container_add(GTK_CONTAINER(frame_status), status);
gtk_misc_set_padding(GTK_MISC(status), pad, pad);
state.uid = uid;
state.status = status;
state.apply = apply;
gtk_widget_show_all(dialog);
g_signal_connect(dialog, "delete-event", G_CALLBACK(download_dialog_delete), &state);
result = gtk_dialog_run(GTK_DIALOG(dialog));
if (result == GTK_RESPONSE_ACCEPT) {
/* apply download */
g_message("\napply download should happen here: \n\n %s", state.xmldata);
}
download_dialog_release_xml(&state);
gtk_widget_destroy(dialog);
}
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