Esempio n. 1
0
 def __init__(self, source, latest_post):
     self.source = source
     self.latest_post = latest_post
     self.api = VKAPIWrapper()
Esempio n. 2
0
class VKParser(object):
    def __init__(self, source, latest_post):
        self.source = source
        self.latest_post = latest_post
        self.api = VKAPIWrapper()

    def refresh(self):
        loaded_images = self._load_photos()
        images = self._clean_loaded(loaded_images)
        return images

    def _clean_loaded(self, images):
        data = []
        print "Loaded %s images" % len(images)
        for image in images:
            link = self._get_biggest_image_link(image)
            if link is not None:
                data.append(
                    {
                        "href": link,
                        "source": self.source,
                        "likes": image["likes"]["count"],
                        "share": image["reposts"]["count"],
                        "comments": image["comments"]["count"],
                    }
                )
        return data

    @staticmethod
    def _get_biggest_image_link(photo_data):
        """
        Find biggest possible size
        """
        sizes = ["photo_1280", "photo_807", "photo_604", "photo_130", "photo_75"]
        for size in sizes:
            if size in photo_data.keys():
                return photo_data[size]

    def _load_photos(self):
        data = self.api.get("wall.get", {"domain": self.source, "count": IMAGES_TO_LOAD})
        photos = []
        if data["items"]:
            if not self.latest_post or self._check_photo_age(data["items"][0]["date"]):

                photos = self._process_loaded_items(data["items"])
                self.latest_post = int(data["items"][0]["date"])
        return photos

    def _process_loaded_items(self, items):
        photos = []
        for item in items:
            if "attachments" in item:
                if len(item["attachments"]) == 1 and item["attachments"][0]["type"] == "photo":

                    if self._check_post_age(item["date"]):
                        if not self.latest_post == 0 or self._check_photo_age(item["date"]):

                            photo = item["attachments"][0]["photo"]
                            photo["likes"] = item["likes"]
                            photo["comments"] = item["comments"]
                            photo["reposts"] = item["reposts"]
                            photo["posted"] = item["date"]
                            photos.append(photo)
        return photos

    def _check_post_age(self, post_timestamp):
        return self._get_server_time() - int(post_timestamp) > 3600

    def _check_photo_age(self, post_timestamp):
        return int(post_timestamp) - self.latest_post > 3600

    def _get_server_time(self):
        return int(self.api.get("getServerTime", {}))