67 lines
1.5 KiB
Python
Executable file
67 lines
1.5 KiB
Python
Executable file
#!/usr/bin/env python
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import overpy
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# brandname : overpass query filters
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BRANDS: dict[str, str] = {
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"greggs": "[\"brand:wikidata\"=\"Q3403981\"]",
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}
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EncodedLocation = list[tuple[float, list[float]]]
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def fetch_data(brand: str) -> list[tuple[float | None, float | None]]:
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"""Fetch a list of locations from OSM."""
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api = overpy.Overpass()
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filters = BRANDS[brand]
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query = api.query(f"nwr{filters}; out center;")
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result = []
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for way in query.ways:
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result.append((way.center_lat, way.center_lon))
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for node in query.nodes:
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result.append((node.lat, node.lon))
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for (lat, lon) in result:
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if (lat is None) or (lon is None):
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raise ValueError("Item missing coords!")
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return result
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def encode(location: tuple[float, float]) -> EncodedLocation:
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"""Encode a location."""
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# Stub
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return [
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(5., [1., 2., 3.]),
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(6., [4., 5., 6.]),
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]
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def decode(location: EncodedLocation) -> tuple[float, float]:
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"""Decode into a location."""
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# Stub
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return (0.091659, 52.210796)
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def format_location(location: EncodedLocation) -> str:
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"""Format an encoded location as a string."""
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return ";".join([f"{a}:{','.join(map(str, b))}" for (a, b) in location])
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def main():
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"""Testing."""
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print("Running query...")
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greggs = fetch_data("greggs")
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print(f"Query done - got {len(greggs)} Greggs!")
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print(format_location(encode((0.091659, 52.210796))))
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if __name__ == "__main__":
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main()
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