-
Notifications
You must be signed in to change notification settings - Fork 69
/
forecast.go
175 lines (149 loc) · 4.95 KB
/
forecast.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
// Copyright 2022 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 (
"fmt"
"io"
"net/url"
"strconv"
"strings"
)
// ForecastSys area population
type ForecastSys struct {
Population int `json:"population"`
}
// Temperature holds returned termperate sure stats
type Temperature struct {
Day float64 `json:"day"`
Min float64 `json:"min"`
Max float64 `json:"max"`
Night float64 `json:"night"`
Eve float64 `json:"eve"`
Morn float64 `json:"morn"`
}
// City data for given location
type City struct {
ID int `json:"id"`
Name string `json:"name"`
Coord Coordinates `json:"coord"`
Country string `json:"country"`
Population int `json:"population"`
Sys ForecastSys `json:"sys"`
}
type ForecastWeather interface {
DailyByName(location string, days int) error
DailyByCoordinates(location *Coordinates, days int) error
DailyByID(id, days int) error
}
// json served by OWM API can take different forms, so all of them must be matched
// by corresponding data type and unmarshall method
type ForecastWeatherJson interface {
Decode(r io.Reader) error
}
type ForecastWeatherData struct {
Unit string
Lang string
Key string
baseURL string
*Settings
ForecastWeatherJson
}
// NewForecast returns a new HistoricalWeatherData pointer with
// the supplied arguments.
func NewForecast(forecastType, unit, lang, key string, options ...Option) (*ForecastWeatherData, error) {
unitChoice := strings.ToUpper(unit)
langChoice := strings.ToUpper(lang)
if forecastType != "16" && forecastType != "5" {
return nil, errForecastUnavailable
}
if !ValidDataUnit(unitChoice) {
return nil, errUnitUnavailable
}
if !ValidLangCode(langChoice) {
return nil, errLangUnavailable
}
settings := NewSettings()
if err := setOptions(settings, options); err != nil {
return nil, err
}
var err error
k, err := setKey(key)
if err != nil {
return nil, err
}
forecastData := ForecastWeatherData{
Unit: DataUnits[unitChoice],
Lang: langChoice,
Key: k,
Settings: settings,
}
if forecastType == "16" {
forecastData.baseURL = forecast16Base
forecastData.ForecastWeatherJson = &Forecast16WeatherData{}
} else {
forecastData.baseURL = forecast5Base
forecastData.ForecastWeatherJson = &Forecast5WeatherData{}
}
return &forecastData, nil
}
// DailyByName will provide a forecast for the location given for the
// number of days given.
func (f *ForecastWeatherData) DailyByName(location string, days int) error {
response, err := f.client.Get(fmt.Sprintf(f.baseURL, f.Key, fmt.Sprintf("%s=%s", "q", url.QueryEscape(location)), f.Unit, f.Lang, days))
if err != nil {
return err
}
defer response.Body.Close()
return f.ForecastWeatherJson.Decode(response.Body)
}
// DailyByCoordinates will provide a forecast for the coordinates ID give
// for the number of days given.
func (f *ForecastWeatherData) DailyByCoordinates(location *Coordinates, days int) error {
response, err := f.client.Get(fmt.Sprintf(f.baseURL, f.Key, fmt.Sprintf("lat=%f&lon=%f", location.Latitude, location.Longitude), f.Unit, f.Lang, days))
if err != nil {
return err
}
defer response.Body.Close()
return f.ForecastWeatherJson.Decode(response.Body)
}
// DailyByID will provide a forecast for the location ID give for the
// number of days given.
func (f *ForecastWeatherData) DailyByID(id, days int) error {
response, err := f.client.Get(fmt.Sprintf(f.baseURL, f.Key, fmt.Sprintf("%s=%s", "id", strconv.Itoa(id)), f.Unit, f.Lang, days))
if err != nil {
return err
}
defer response.Body.Close()
return f.ForecastWeatherJson.Decode(response.Body)
}
// DailyByZip will provide a forecast for the provided zip code.
//
// Deprecated: use DailyByZipcode instead.
func (f *ForecastWeatherData) DailyByZip(zip int, countryCode string, days int) error {
response, err := f.client.Get(fmt.Sprintf(f.baseURL, f.Key, fmt.Sprintf("zip=%05d,%s", zip, countryCode), f.Unit, f.Lang, days))
if err != nil {
return err
}
defer response.Body.Close()
return f.ForecastWeatherJson.Decode(response.Body)
}
// DailyByZipcode will provide a forecast for the provided zip code.
func (f *ForecastWeatherData) DailyByZipcode(zip string, countryCode string, days int) error {
response, err := f.client.Get(fmt.Sprintf(f.baseURL, f.Key, fmt.Sprintf("zip=%s,%s", zip, countryCode), f.Unit, f.Lang, days))
if err != nil {
return err
}
defer response.Body.Close()
return f.ForecastWeatherJson.Decode(response.Body)
}