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"""GeoRSS feed item."""
from __future__ import annotations
import logging
from ..consts import (
XML_TAG_GDACS_BBOX,
XML_TAG_GEO_LAT,
XML_TAG_GEO_LONG,
XML_TAG_GEO_POINT,
XML_TAG_GEORSS_POINT,
XML_TAG_GEORSS_POLYGON,
XML_TAG_GEORSS_WHERE,
XML_TAG_GML_EXTERIOR,
XML_TAG_GML_LINEAR_RING,
XML_TAG_GML_POINT,
XML_TAG_GML_POLYGON,
XML_TAG_GML_POS,
XML_TAG_GML_POS_LIST,
XML_TAG_GUID,
XML_TAG_ID,
XML_TAG_SOURCE,
)
from .feed_or_feed_item import FeedOrFeedItem
from .geometry import BoundingBox, Geometry, Point, Polygon
_LOGGER = logging.getLogger(__name__)
class FeedItem(FeedOrFeedItem):
"""Represents a feed item."""
def __repr__(self):
"""Return string representation of this feed item."""
return f"<{self.__class__.__name__}({self.guid})>"
@property
def guid(self) -> str | None:
"""Return the guid of this feed item."""
return self._attribute_with_text([XML_TAG_GUID, XML_TAG_ID])
@property
def id(self) -> str | None:
"""Return the id of this feed item."""
return self.guid
@property
def source(self) -> str | None:
"""Return the source of this feed item."""
return self._attribute([XML_TAG_SOURCE])
@property
def geometries(self) -> list[Geometry] | None:
"""Return all geometries of this feed item."""
geometries = []
for entry in [
self._geometry_georss_point(),
self._geometry_georss_where(),
self._geometry_geo_point(),
self._geometry_geo_long_lat(),
self._geometry_georss_polygon(),
self._geometry_gdacs_bbox(),
]:
if entry:
geometries.extend(entry)
# Filter out any duplicates.
unique_geometries = []
for i in geometries:
if i not in unique_geometries:
unique_geometries.append(i)
return unique_geometries
def _geometry_georss_point(self) -> list[Point] | None:
"""Check for georss:point tag."""
# <georss:point>-0.5 119.8</georss:point>
point = self._attribute([XML_TAG_GEORSS_POINT])
if point:
if isinstance(point, tuple):
return FeedItem._create_georss_point_single(point)
else:
return FeedItem._create_georss_point_multiple(point)
return None
@staticmethod
def _create_georss_point_single(point: tuple) -> list[Point]:
"""Create single point from provided coordinates."""
return [Point(point[0], point[1])]
@staticmethod
def _create_georss_point_multiple(point: list) -> list[Point]:
"""Create multiple points from provided coordinates."""
points: list[Point] = []
for entry in point:
points.append(Point(entry[0], entry[1]))
return points
def _geometry_georss_where(self) -> list[Geometry] | None:
"""Check for georss:where tag."""
where = self._attribute([XML_TAG_GEORSS_WHERE])
if where:
# Point:
# <georss:where>
# <gml:Point>
# <gml:pos>44.11 -66.23</gml:pos>
# </gml:Point>
# </georss:where>
pos = self._attribute_in_structure(
where, [XML_TAG_GML_POINT, XML_TAG_GML_POS]
)
if pos:
return [Point(pos[0], pos[1])]
# Polygon:
# <georss:where>
# <gml:Polygon>
# <gml:exterior>
# <gml:LinearRing>
# <gml:posList>
# -71.106216 42.366661
# -71.105576 42.367104
# -71.104378 42.367134
# -71.103729 42.366249
# -71.098793 42.363331
# -71.101028 42.362541
# -71.106865 42.366123
# -71.106216 42.366661
# </gml:posList>
# </gml:LinearRing>
# </gml:exterior>
# </gml:Polygon>
# </georss:where>
pos_list = self._attribute_in_structure(
where,
[
XML_TAG_GML_POLYGON,
XML_TAG_GML_EXTERIOR,
XML_TAG_GML_LINEAR_RING,
XML_TAG_GML_POS_LIST,
],
)
if pos_list:
return self._create_polygon(pos_list)
return None
def _geometry_geo_point(self) -> list[Point] | None:
"""Check for geo:Point tag."""
# <geo:Point xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#">
# <geo:lat>38.3728</geo:lat>
# <geo:long>15.7213</geo:long>
# </geo:Point>
point = self._attribute([XML_TAG_GEO_POINT])
if point:
lat = point.get(XML_TAG_GEO_LAT)
long = point.get(XML_TAG_GEO_LONG)
if long and lat:
return [Point(lat, long)]
return None
def _geometry_geo_long_lat(self) -> list[Point] | None:
"""Check for geo:long and geo:lat tags."""
# <geo:long>119.948006</geo:long>
# <geo:lat>-23.126413</geo:lat>
lat = self._attribute([XML_TAG_GEO_LAT])
long = self._attribute([XML_TAG_GEO_LONG])
if long and lat:
return [Point(lat, long)]
return None
def _geometry_gdacs_bbox(self) -> list[BoundingBox] | None:
"""Check for gdacs:bbox tag."""
# <!--gdacs: bbox format = lonmin lonmax latmin latmax -->
# <gdacs:bbox>164.5652 172.5652 -24.9041 -16.9041</gdacs:bbox>
bbox = self._attribute([XML_TAG_GDACS_BBOX])
if bbox:
if isinstance(bbox, tuple):
return FeedItem._create_bbox_single(bbox)
else:
return FeedItem._create_bbox_multiple(bbox)
return None
@staticmethod
def _create_bbox_single(bbox: tuple) -> list[BoundingBox]:
"""Create single bbox from provided tuple of coordinates."""
return [BoundingBox(Point(bbox[2], bbox[0]), Point(bbox[3], bbox[1]))]
@staticmethod
def _create_bbox_multiple(bbox: list) -> list[BoundingBox]:
"""Create multiple bboxes from provided list of coordinates."""
bounding_boxes = []
for entry in bbox:
if len(entry) == 4:
bounding_boxes.append(
BoundingBox(Point(entry[2], entry[0]), Point(entry[3], entry[1]))
)
else:
_LOGGER.warning("Insufficient data for " "bounding box: %s", entry)
return bounding_boxes
def _geometry_georss_polygon(self) -> list[Polygon] | None:
"""Check for georss:polygon tag."""
# <georss:polygon>
# -34.937663524 148.597260613
# -34.9377026399999 148.597169138
# -34.9377002169999 148.59708737
# -34.9376945989999 148.59705595
# -34.9376863529999 148.596955098
# -34.937663524 148.597260613
# </georss:polygon>
polygon = self._attribute([XML_TAG_GEORSS_POLYGON])
if polygon:
return self._create_polygon(polygon)
return None
@staticmethod
def _create_polygon(polygon_data) -> list[Polygon] | None:
"""Create a polygon from the provided coordinates."""
if polygon_data:
# Either tuple or an array of tuples.
if isinstance(polygon_data, tuple):
return FeedItem._create_polygon_single(polygon_data)
else:
return FeedItem._create_polygon_multiple(polygon_data)
return None
@staticmethod
def _create_polygon_single(polygon_data: tuple) -> list[Polygon]:
"""Create polygon from provided tuple of coordinates."""
if len(polygon_data) % 2 != 0:
# Not even number of coordinates - chop last entry.
polygon_data = polygon_data[0 : len(polygon_data) - 1]
points = []
for i in range(0, len(polygon_data), 2):
points.append(Point(polygon_data[i], polygon_data[i + 1]))
return [Polygon(points)]
@staticmethod
def _create_polygon_multiple(polygon_data: list) -> list[Polygon]:
"""Create polygon from provided list of coordinates."""
polygons = []
for entry in polygon_data:
polygons.extend(FeedItem._create_polygon(entry))
return polygons
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