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history.go
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history.go
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// Copyright 2014 Brian J. Downs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package openweathermap
import (
"errors"
"strings"
)
// HistoricalParameters struct holds the (optional) fields to be
// supplied for historical data requests.
type HistoricalParameters struct {
Start int64
End int64
Cnt int
}
// WeatherHistory struct contains aggregate fields from the above
// structs.
type WeatherHistory struct {
Main Main `json:"main"`
Wind Wind `json:"wind"`
Clouds Clouds `json:"clouds"`
Weather []Weather `json:"weather"`
Dt int `json:"dt"`
}
// HistoricalWeatherData struct is where the JSON is unmarshaled to
// when receiving data for a historical request.
type HistoricalWeatherData struct {
Message string `json:"message"`
Cod int `json:"cod"`
CityData int `json:"city_data"`
CalcTime float64 `json:"calctime"`
Cnt int `json:"cnt"`
List []WeatherHistory `json:"list"`
Unit string
}
// NewHistorical returns a new HistoricalWeatherData pointer with
//the supplied arguments.
func NewHistorical(unit string) (*HistoricalWeatherData, error) {
unitChoice := strings.ToUpper(unit)
if ValidDataUnit(unitChoice) {
return &HistoricalWeatherData{Unit: unitChoice}, nil
}
return nil, errors.New("unit of measure not available")
}