58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package model
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import (
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"encoding/json"
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"math"
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"net/http"
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"net/url"
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"strconv"
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"github.com/ceticamarco/zephyr/types"
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)
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func GetMetrics(city *types.City, apiKey string) (types.Metrics, error) {
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url, err := url.Parse(WTR_URL)
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if err != nil {
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return types.Metrics{}, err
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}
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params := url.Query()
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params.Set("lat", strconv.FormatFloat(city.Lat, 'f', -1, 64))
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params.Set("lon", strconv.FormatFloat(city.Lon, 'f', -1, 64))
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params.Set("appid", apiKey)
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params.Set("units", "metric")
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params.Set("exclude", "minutely,hourly,daily,alerts")
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url.RawQuery = params.Encode()
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res, err := http.Get(url.String())
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if err != nil {
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return types.Metrics{}, err
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}
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defer res.Body.Close()
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// Structure representing the JSON response
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type MetricsRes struct {
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Current struct {
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Humidity int `json:"humidity"`
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Pressure int `json:"pressure"`
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DewPoint float64 `json:"dew_point"`
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UvIndex float64 `json:"uvi"`
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Visibility float64 `json:"visibility"`
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} `json:"current"`
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}
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var metricRes MetricsRes
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if err := json.NewDecoder(res.Body).Decode(&metricRes); err != nil {
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return types.Metrics{}, err
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}
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return types.Metrics{
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Humidity: strconv.Itoa(metricRes.Current.Humidity),
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Pressure: strconv.Itoa(metricRes.Current.Pressure),
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DewPoint: strconv.FormatFloat(metricRes.Current.DewPoint, 'f', -1, 64),
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UvIndex: strconv.FormatFloat(math.Round(metricRes.Current.UvIndex), 'f', -1, 64),
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Visibility: strconv.FormatFloat((metricRes.Current.Visibility / 1000), 'f', -1, 64),
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}, nil
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}
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