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Get weather for Lat Lon
bitfield
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bitfield
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Great work so far! Try adding an alternate weather provider (such as OpenWeatherMap) and see how that plays with your existing API.
| t.Fatalf("GetCoordinates('Castlebar', 'IE') got err %v", err) | ||
| } | ||
| want := meteo.Place{ | ||
| Lng: -9.2988, |
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It's possible we might run into a floating-point imprecision issue comparing these values, isn't it? If Wikipedia provides four decimal places of precision, what about storing the lat and long as int:
Longitude: -92988,
Latitude: 538608You can always insert the decimal point for display.
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| var wp wikipediaPlaces | ||
| if err := json.NewDecoder(res.Body).Decode(&wp); err != nil { | ||
| return Place{}, fmt.Errorf("decoding response %w", err) |
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I suggest reading all the body with io.ReadAll and then passing the resulting []byte to json.Unmarshal. In the event of a parsing error, it'll be nice to have the JSON data to display to the user. Using the Decode API, we wouldn't have that, because consuming the reader destroys its contents.
| // GetWeather returns current weather for given | ||
| // place and country using default client for the Norwegian | ||
| // meteorological Institute. | ||
| func GetWeather(place, country string) (Weather, error) { |
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Different weather providers have different ways to specify the location, so perhaps we need to think more generally when defining our GetWeather function, because it'll become frozen as an interface.
| func GetWeather(place, country string) (Weather, error) { | |
| func GetWeather(location string) (Weather, error) { |
Each provider (for example Norway) can interpret that location string according to its own needs.
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(Alternatively, you could define a struct Location, with multiple ways of specifying a location. To save paperwork, you could then provide a few different ways to specify a location, by city-country, by lat/long, What3Words, and so on.)
| if err != nil { | ||
| return Weather{}, err | ||
| } | ||
| c, err := NewNorwayClient(resolver) |
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I think the geo-resolver stuff is independent enough to be moved out into its own package, isn't it? I mean, I can see myself using it for something not related to weather, so I wouldn't want to import the whole meteo package just to get the lat/long functionality.
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implemented. For now in the same repo, but I am thinking in the future to move it to a separate repo and add more functionality to the library to cover all functionality of the current GeoNames web services (https://www.geonames.org/export/ws-overview.html)
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A full review of the entire repository. When this PR is complete, be sure to manually merge its head branch into the main branch for this repository.