git.maemo.org Git - maevies/blob - src/mvs-minfo-provider.c

   1 /*
   2  * mvs-minfo-provider.c
   3  *
   4  * This file is part of maevies
   5  * Copyright (C) 2010 Simón Pena <spenap@gmail.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  */
  18
  19 #include "mvs-minfo-provider.h"
  20
  21 #include <libxml/parser.h>
  22 #include <libxml/xpath.h>
  23 #include <json-glib/json-glib.h>
  24
  25 #include "mvs-tmdb-movie.h"
  26 #include "mvs-tmdb-image.h"
  27 #include "mvs-watc-movie.h"
  28
  29 #define TMDB_API_KEY "249e1a42df9bee09fac5e92d3a51396b"
  30 #define TMDB_LANGUAGE "en"
  31 #define TMDB_FORMAT "xml"
  32 #define TMDB_METHOD "Movie.search"
  33 #define TMDB_BASE_URL "http://api.themoviedb.org/2.1/%s/%s/%s/%s/%s"
  34 #define TMDB_MOVIE_XPATH "/OpenSearchDescription/movies/movie"
  35
  36 #define WATC_BASE_URL "http://whatsafterthecredits.com/api.php?action=%s&format=%s&search=%s"
  37 #define WATC_ACTION "opensearch"
  38 #define WATC_FORMAT "json"
  39
  40 G_DEFINE_TYPE (MvsMInfoProvider, mvs_minfo_provider, G_TYPE_OBJECT)
  41
  42 enum {
  43         PROP_0,
  44         PROP_FORMAT,
  45 };
  46
  47 #define GET_PRIVATE(o) \
  48   (G_TYPE_INSTANCE_GET_PRIVATE ((o), MVS_TYPE_MINFO_PROVIDER, MvsMInfoProviderPrivate))
  49
  50 struct _MvsMInfoProviderPrivate {
  51         gchar *format;
  52         MvsService service;
  53 };
  54
  55 enum {
  56         RESPONSE_RECEIVED,
  57         LAST_SIGNAL
  58 };
  59
  60 static guint
  61 signals[LAST_SIGNAL] = { 0 };
  62
  63
  64 static void
  65 mvs_minfo_provider_get_property (GObject *object, guint property_id,
  66                          GValue *value, GParamSpec *pspec)
  67 {
  68         MvsMInfoProvider *self = MVS_MINFO_PROVIDER (object);
  69
  70         switch (property_id) {
  71         case PROP_FORMAT:
  72                 g_value_set_string (value, self->priv->format);
  73                 break;
  74         default:
  75                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
  76         }
  77 }
  78
  79 static void
  80 mvs_minfo_provider_set_property (GObject *object, guint property_id,
  81                          const GValue *value, GParamSpec *pspec)
  82 {
  83         MvsMInfoProvider *self = MVS_MINFO_PROVIDER (object);
  84
  85         switch (property_id) {
  86         case PROP_FORMAT:
  87                 mvs_minfo_provider_set_format (self,
  88                                 g_value_get_string (value));
  89                 break;
  90         default:
  91                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
  92         }
  93 }
  94
  95 static void
  96 mvs_minfo_provider_finalize (GObject *object)
  97 {
  98         MvsMInfoProvider *self = MVS_MINFO_PROVIDER (object);
  99
 100         g_free (self->priv->format);
 101
 102         G_OBJECT_CLASS (mvs_minfo_provider_parent_class)->finalize (object);
 103 }
 104
 105 static void
 106 mvs_minfo_provider_class_init (MvsMInfoProviderClass *klass)
 107 {
 108         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 109
 110         g_type_class_add_private (klass, sizeof (MvsMInfoProviderPrivate));
 111
 112         object_class->get_property = mvs_minfo_provider_get_property;
 113         object_class->set_property = mvs_minfo_provider_set_property;
 114         object_class->finalize = mvs_minfo_provider_finalize;
 115
 116         g_object_class_install_property
 117                 (object_class, PROP_FORMAT,
 118                  g_param_spec_string ("format", "The format", "The format",
 119                                       TMDB_FORMAT,
 120                                       G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 121
 122         signals[RESPONSE_RECEIVED] = g_signal_new ("response-received", MVS_TYPE_MINFO_PROVIDER,
 123                         G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE | G_SIGNAL_NO_HOOKS,
 124                         0,
 125                         NULL,
 126                         NULL,
 127                         g_cclosure_marshal_VOID__POINTER,
 128                         G_TYPE_NONE,
 129                         1,
 130                         G_TYPE_POINTER);
 131 }
 132
 133 static void
 134 mvs_minfo_provider_init (MvsMInfoProvider *self)
 135 {
 136         self->priv = GET_PRIVATE (self);
 137         self->priv->format = NULL;
 138         self->priv->service = MVS_SERVICE_TMDB;
 139 }
 140
 141 MvsMInfoProvider*
 142 mvs_minfo_provider_new (void)
 143 {
 144         return g_object_new (MVS_TYPE_MINFO_PROVIDER, NULL);
 145 }
 146
 147 static MvsTmdbImage*
 148 create_tmdb_image (xmlNodePtr node)
 149 {
 150         MvsTmdbImage *image = mvs_tmdb_image_new ();
 151         gchar *value = NULL;
 152         int i;
 153
 154         /* <image type="poster"
 155          * url="http://....jpg"
 156          * size="original"
 157          * id="4bc91...e007304"/> */
 158
 159         for (i = 0; i < LAST_FIELD; i ++) {
 160               value = xmlGetProp (node, image_fields[i]);
 161
 162               g_object_set (image, image_fields[i], value, NULL);
 163
 164               g_free (value);
 165         }
 166
 167         return image;
 168 }
 169
 170 static MvsTmdbMovie*
 171 create_tmdb_movie (xmlNodePtr node)
 172 {
 173         xmlNodePtr cur_node = NULL;
 174         MvsTmdbMovie *movie_info = mvs_tmdb_movie_new ();
 175         GList *image_list = NULL;
 176
 177         /* We use the loop to append each property to the movie object */
 178         for (cur_node = node; cur_node; cur_node = cur_node->next) {
 179                 if (cur_node->type == XML_ELEMENT_NODE) {
 180                         gchar *value = NULL;
 181
 182                         if (g_strcmp0 (cur_node->name, "images") == 0) {
 183                                 xmlNodePtr cur_image = NULL;
 184                                 for (cur_image = cur_node->children; cur_image;
 185                                                 cur_image = cur_image->next) {
 186
 187                                         MvsTmdbImage *tmdb_image = create_tmdb_image (cur_image);
 188                                         image_list = g_list_append (image_list, tmdb_image);
 189                                 }
 190                         }
 191                         else {
 192                                 value = xmlNodeGetContent (cur_node);
 193                                 g_object_set (movie_info, cur_node->name, value, NULL);
 194                                 g_free (value);
 195                         }
 196                 }
 197         }
 198
 199         mvs_tmdb_movie_set_images (movie_info, image_list);
 200
 201         return movie_info;
 202 }
 203
 204 static GList*
 205 generate_list (xmlNodeSetPtr node_set)
 206 {
 207         int i = 0;
 208         GList *list = NULL;
 209
 210         for (i = 0; i < node_set->nodeNr; i++) {
 211                 xmlNodePtr node = node_set->nodeTab[i];
 212                 if (node->type == XML_ELEMENT_NODE) {
 213                         MvsTmdbMovie *movie_info =
 214                                         create_tmdb_movie (node->children);
 215                         if (movie_info)
 216                                 list = g_list_prepend (list, movie_info);
 217                 }
 218         }
 219
 220         if (list)
 221                 list = g_list_reverse (list);
 222
 223         return list;
 224 }
 225
 226 static GList*
 227 parse_xml (const char *xml_data, goffset length)
 228 {
 229         GList *list = NULL;
 230         xmlDocPtr document = xmlReadMemory (xml_data, length,
 231                         NULL,
 232                         NULL,
 233                         XML_PARSE_NOBLANKS | XML_PARSE_RECOVER);
 234         g_return_if_fail (document);
 235
 236         xmlXPathContextPtr context_ptr = xmlXPathNewContext (document);
 237
 238         xmlXPathObjectPtr xpath_obj =
 239                         xmlXPathEvalExpression (TMDB_MOVIE_XPATH, context_ptr);
 240
 241         xmlNodeSetPtr nodeset = xpath_obj->nodesetval;
 242
 243         if (nodeset->nodeNr > 0) {
 244                 list = generate_list (nodeset);
 245         }
 246
 247         xmlXPathFreeObject (xpath_obj);
 248         xmlXPathFreeContext (context_ptr);
 249         xmlFreeDoc (document);
 250
 251         return list;
 252 }
 253
 254 static GList *
 255 parse_json (const char *json_data, goffset length)
 256 {
 257         JsonParser *parser = NULL;
 258         JsonNode *root = NULL;
 259         GError *error = NULL;
 260         GList *list = NULL;
 261
 262         parser = json_parser_new ();
 263
 264         json_parser_load_from_data (parser, json_data, length, &error);
 265         if (error)
 266         {
 267                 g_warning ("Unable to parse data '%s': %s\n",
 268                                 json_data, error->message);
 269                 g_error_free (error);
 270                 g_object_unref (parser);
 271                 return list;
 272         }
 273
 274         /* Don't free */
 275         root = json_parser_get_root (parser);
 276         JsonArray *response = json_node_get_array (root);
 277
 278         /* The response is expected with the following format:
 279          * [ SEARCH_TERM ,[ SEARCH_RESULT_1, SEARCH_RESULT_N]] */
 280
 281         if (json_array_get_length (response) != 2) {
 282
 283                 g_warning ("Wrong response format: %s\n", json_data);
 284
 285                 g_object_unref (parser);
 286                 return list;
 287         }
 288
 289         const gchar *search_term = json_array_get_string_element (response, 0);
 290         g_message ("Searched for: %s\n", search_term);
 291
 292         JsonArray *results = json_array_get_array_element (response, 1);
 293         int i;
 294         int array_length = json_array_get_length (results);
 295
 296         for (i = 0; i < array_length; i++) {
 297                 const gchar *result =
 298                                 json_array_get_string_element (results, i);
 299                 MvsWatcMovie *watc_movie = mvs_watc_movie_new (result);
 300                 list = g_list_prepend (list, watc_movie);
 301         }
 302
 303         g_object_unref (parser);
 304
 305         if (list)
 306                 list = g_list_reverse (list);
 307
 308         return list;
 309 }
 310
 311 static void
 312 process_response_cb (SoupSession *session, SoupMessage *message,
 313                     gpointer user_data)
 314 {
 315         MvsMInfoProvider *self = MVS_MINFO_PROVIDER (user_data);
 316         const gchar *mime = NULL;
 317         GList *list = NULL;
 318
 319         if (!SOUP_STATUS_IS_SUCCESSFUL (message->status_code) ||
 320                         message->response_body->length <= 0) {
 321
 322                 g_print ("%s\n", message->reason_phrase);
 323         }
 324         else {
 325
 326                 mime = soup_message_headers_get_content_type
 327                                 (message->response_headers, NULL);
 328                 g_message ("Mime type: %s\n", mime);
 329
 330                 if (g_strcmp0 (mime, "text/xml") == 0)
 331                         list = parse_xml (message->response_body->data,
 332                                         message->response_body->length);
 333                 else if (g_strcmp0 (mime, "application/json") == 0)
 334                         list = parse_json (message->response_body->data,
 335                                         message->response_body->length);
 336         }
 337
 338         g_signal_emit (self, signals[RESPONSE_RECEIVED], 0, list);
 339 }
 340
 341 static gchar *
 342 get_query_uri (MvsMInfoProvider *self, const char *query)
 343 {
 344         gchar *uri = NULL;
 345
 346         if (self->priv->service == MVS_SERVICE_TMDB) {
 347                 /* METHOD/LANGUAGE/FORMAT/APIKEY/MOVIENAME */
 348                 uri = g_strdup_printf (TMDB_BASE_URL, TMDB_METHOD,
 349                                 TMDB_LANGUAGE,
 350                                 self->priv->format,
 351                                 TMDB_API_KEY,
 352                                 query);
 353
 354         }
 355         else if (self->priv->service == MVS_SERVICE_WATC) {
 356                 /* WATCBASE_URL/ACTION/FORMAT/QUERY */
 357                 uri = g_strdup_printf (WATC_BASE_URL,
 358                                 WATC_ACTION,
 359                                 WATC_FORMAT,
 360                                 query);
 361         }
 362         else {
 363                 g_warning ("Service unsupported\n");
 364         }
 365
 366         g_message ("%s", uri);
 367         return uri;
 368 }
 369
 370 gboolean
 371 mvs_minfo_provider_query (MvsMInfoProvider *self, MvsService service,
 372                           const gchar *query)
 373 {
 374         g_return_val_if_fail (MVS_IS_MINFO_PROVIDER (self), FALSE);
 375
 376         self->priv->service = service;
 377
 378         SoupSession *session = NULL;
 379         SoupMessage *message = NULL;
 380         gboolean message_queued = FALSE;
 381
 382         gchar *uri = get_query_uri (self, query);
 383
 384         g_return_val_if_fail (uri, FALSE);
 385
 386         session = soup_session_async_new ();
 387         message = soup_message_new ("GET", uri);
 388
 389         if (message) {
 390                 soup_session_queue_message (session, message,
 391                                 process_response_cb, self);
 392                 message_queued = TRUE;
 393         }
 394
 395         g_free (uri);
 396
 397         return message_queued;
 398 }
 399
 400 gboolean
 401 mvs_minfo_provider_set_format (MvsMInfoProvider *self,
 402                                const gchar *format)
 403 {
 404         g_return_val_if_fail (MVS_IS_MINFO_PROVIDER (self), FALSE);
 405
 406         g_free (self->priv->format);
 407
 408         self->priv->format = g_strdup (format);
 409
 410         return TRUE;
 411 }