2022-07-26 01:07:04 -04:00
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package main
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import (
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"context"
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"encoding/json"
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"io/ioutil"
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"log"
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"net/http"
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pb "codeberg.org/andcscott/OpenWeatherMap-gRPC-API/proto"
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)
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type Coordinates struct {
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Latitude float32 `json:"lat"`
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Longitude float32 `json:"lon"`
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}
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2022-07-26 19:41:53 -04:00
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// Receives a gRPC request for Location
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// Returns a SendLocation message with the Latitude and Longitude
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func (s *Server) Location(ctx context.Context, in *pb.RequestLocation) (*pb.SendLocation, error) {
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log.Println("'Location' function called...")
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2022-07-27 02:58:00 -04:00
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lat, lon := getLocation(in.City, s.ApiKey)
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return &pb.SendLocation{
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Latitude: lat,
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Longitude: lon,
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}, nil
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}
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2022-07-27 02:58:00 -04:00
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// Used internally to fetch precise locations
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// Receives gRPC requests (interface) and the location (string)
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// Returns the latitude (float32) and longitude (float32) for a given location
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func getLocation(city string, key string) (float32, float32) {
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url := "http://api.openweathermap.org/geo/1.0/direct?q="
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token := "&appid=" + key
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2022-07-26 23:37:38 -04:00
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url = url + city + token
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res, err := http.Get(url)
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if err != nil {
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log.Printf("Error fetching location: %v\n", err)
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}
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defer res.Body.Close()
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body, err := ioutil.ReadAll(res.Body)
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if err != nil {
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log.Printf("Error reading location: %v\n", err)
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}
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coords := []Coordinates{}
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err = json.Unmarshal(body, &coords)
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if err != nil {
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log.Printf("Error decoding JSON: %v\n", err)
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}
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return coords[0].Latitude, coords[0].Longitude
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}
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