82 lines
2.2 KiB
Go
82 lines
2.2 KiB
Go
package controller
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"math"
|
|
"net/http"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/ceticamarco/zephyr/model"
|
|
"github.com/ceticamarco/zephyr/types"
|
|
)
|
|
|
|
func jsonError(res http.ResponseWriter, key string, value string, status int) {
|
|
res.Header().Set("Content-Type", "application/json")
|
|
res.WriteHeader(status)
|
|
json.NewEncoder(res).Encode(map[string]string{key: value})
|
|
}
|
|
|
|
func jsonValue(res http.ResponseWriter, val any) {
|
|
res.Header().Set("Content-Type", "application/json")
|
|
res.WriteHeader(http.StatusOK)
|
|
json.NewEncoder(res).Encode(val)
|
|
}
|
|
|
|
func fmtTemperature(temp string, isImperial bool) string {
|
|
parsedTemp, _ := strconv.ParseFloat(temp, 64)
|
|
|
|
if isImperial {
|
|
return fmt.Sprintf("%d°F", int(math.Round(parsedTemp*(9/5)+32)))
|
|
}
|
|
|
|
return fmt.Sprintf("%d°C", int(math.Round(parsedTemp)))
|
|
}
|
|
|
|
func GetWeather(res http.ResponseWriter, req *http.Request, cache *types.Cache[types.Weather], vars *types.Variables) {
|
|
if req.Method != http.MethodGet {
|
|
jsonError(res, "error", "method not allowed", http.StatusMethodNotAllowed)
|
|
return
|
|
}
|
|
|
|
// Extract city name from '/weather/:city'
|
|
path := strings.TrimPrefix(req.URL.Path, "/weather/")
|
|
cityName := strings.Trim(path, "/") // Remove trailing slash if present
|
|
|
|
// Check whether the 'i' parameter(imperial mode) is specified
|
|
isImperial := req.URL.Query().Has("i")
|
|
|
|
weather, found := cache.GetEntry(cityName, vars.TimeToLive)
|
|
if found {
|
|
// Format weather values and then return it
|
|
weather.Temperature = fmtTemperature(weather.Temperature, isImperial)
|
|
weather.FeelsLike = fmtTemperature(weather.FeelsLike, isImperial)
|
|
|
|
jsonValue(res, weather)
|
|
} else {
|
|
// Get city coordinates
|
|
city, err := model.GetCoordinates(cityName, vars.Token)
|
|
if err != nil {
|
|
jsonError(res, "error", err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
// Get city weather
|
|
weather, err := model.GetWeather(&city, vars.Token)
|
|
if err != nil {
|
|
jsonError(res, "error", err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
// Add result to cache
|
|
cache.AddEntry(weather, cityName)
|
|
|
|
// Format weather values and then return it
|
|
weather.Temperature = fmtTemperature(weather.Temperature, isImperial)
|
|
weather.FeelsLike = fmtTemperature(weather.FeelsLike, isImperial)
|
|
|
|
jsonValue(res, weather)
|
|
}
|
|
}
|