### Implemented features:
* Current weather data
* 5 day / 3-hour forecast
### Maven coordinates:
```xml
com.github.prominence
openweathermap-api
2.0.0
```
### Gradle coordinates:
```groovy
compile('com.github.prominence:openweathermap-api:2.0.0')
```
### How to use:
Firstly, you need to create the instance of `OpenWeatherMapClient` class:
```java
OpenWeatherMapClient openWeatherClient = new OpenWeatherMapClient(API_TOKEN);
```
where `API_TOKEN` is your token([you can get it here](https://home.openweathermap.org/api_keys)) as `String`.
Currently, available APIs are:
* `currentWeather()`
* `forecast5Day3HourStep()`
Default(more or less) customization points:
```java
...
// response language
.language(Language.RUSSIAN)
...
// response units of measure
.unitSystem(UnitSystem.IMPERIAL)
...
```
Available output forms:
* `asJava()`
* `asJSON()`
Additional output forms, available for several APIs:
* `asXML()`
* `asHTML()`
_All response forms can be in **sync** and **async** variants._
#### Current weather data
Examples:
```java
final String weatherJson = openWeatherClient
.currentWeather()
.single()
.byCityName("Minsk")
.language(Language.RUSSIAN)
.unitSystem(UnitSystem.IMPERIAL)
.retrieve()
.asJSON();
```
```java
final Weather weather = openWeatherClient
.currentWeather()
.single()
.byCityName("Minsk")
.language(Language.RUSSIAN)
.unitSystem(UnitSystem.METRIC)
.retrieve()
.asJava();
```
```java
final List weatherList = openWeatherClient
.currentWeather()
.multiple()
.byCitiesInCycle(Coordinate.of(55.5, 37.5))
.language(Language.GERMAN)
.unitSystem(UnitSystem.IMPERIAL)
.retrieve()
.asJava();
```
```java
final CompletableFuture weatherXmlFuture = openWeatherClient
.currentWeather()
.single()
.byZipCodeAndCountry("220015", "by")
.language(Language.RUSSIAN)
.unitSystem(UnitSystem.METRIC)
.retrieveAsync()
.asXML();
```
You are able to set preferable options(via chain methods) and execute appropriate request.
`com.github.prominence.openweathermap.api.model.weather.Weather`'s useful public methods(setters are not listed):
| Method | Description |
|---------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `getState()` | Returns short weather description. Example: `Clear`. |
| `getDescription()` | Returns weather description. Example: `clear sky`. |
| `getWeatherIconUrl()` | Returns a link to weather icon hosted on https://openweathermap.org website. |
| `getCalculatedOn()` | Returns `LocalDateTime` object with data calculation time. |
| `getTemperature()` | Returns `Temperature` instance that contains information about temperature. Available fields: `value`, `maxTemperature`, `minTemperature`, `feelsLike` and `unit`. |
| `getAtmosphericPressure()`| Returns `AtmosphericPressure` instance that contains information about atmospheric pressure. Available fields: `value`, `seaLevelValue`, `groundLevelValue` and `unit`. |
| `getHumidity()` | Returns `Humidity` instance that contains humidity percentage information. |
| `getWind()` | Returns `Wind` instance that contains wind information: `speed`, `degrees`, `gust` and `unit`. |
| `getRain()` | Returns `Rain` instance that contains information about rain volume for the last one hour and/or the last 3 hours. Can be absent in case of no data. |
| `getSnow()` | Returns `Snow` instance that contains information about snow volume for the last one hour and/or the last 3 hours. Can be absent in case of no data. |
| `getClouds()` | Returns `Clouds` instance that contains information about cloudiness percentage. |
| `getLocation()` | Returns `Location` object. Available fields: `id`, `name`, `countryCode`, `sunrise` and `sunset` time, `zoneOffset` and `coordinate`. |
| `toString()` | Returns informative string for the whole available weather information. |
`toString()` output example:
```
Location: Minsk(BY), Weather: clear sky, -4.22 ℃, 1020.0 hPa, Clouds: 0%
```
#### 5 day / 3-hour forecast
Examples:
```java
final Forecast forecast = openWeatherClient
.forecast5Day3HourStep()
.byCityName("Minsk")
.language(Language.ENGLISH)
.unitSystem(UnitSystem.METRIC)
.count(15)
.retrieve()
.asJava();
```
```java
final String forecastJson = getClient()
.forecast5Day3HourStep()
.byCityName("New York", "NY", "US")
.language(Language.SPANISH)
.unitSystem(UnitSystem.IMPERIAL)
.count(15)
.retrieve()
.asJSON();
```
```java
CompletableFuture forecastFuture = getClient()
.forecast5Day3HourStep()
.byCityId(350001514)
.language(Language.ENGLISH)
.unitSystem(UnitSystem.METRIC)
.count(15)
.retrieveAsync()
.asXML();
```
```java
final String forecastXml = getClient()
.forecast5Day3HourStep()
.byZipCodeInUSA("10005")
.language(Language.ENGLISH)
.unitSystem(UnitSystem.METRIC)
.retrieve()
.asXML();
```
You are able to set preferable options(via chain methods) and execute appropriate request.
`com.github.prominence.openweathermap.api.request.forecast.free.Forecast`'s useful public methods(setters are not listed):
| Method | Description |
|-------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| `getLocation()` | Returns `Location` object. Available fields: `id`, `name`, `countryCode`, `sunrise` and `sunset` time, `zoneOffset`, `coordinate` and `population`. |
| `getWeatherForecasts()` | Returns list of `WeatherForecast` objects with forecast information. |
| `toString()` | Returns informative string for the whole available forecast information. |
`toString()` output example:
```
A forecast for Minsk with 15 timestamps.
```
`com.github.prominence.openweathermap.api.model.forecast.WeatherForecast`'s useful public methods(setters are not listed):
| Method | Description |
|-------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `getState()` | Returns short weather description. Example: `Clear`. |
| `getDescription()` | Returns weather description. Example: `clear sky`. |
| `getWeatherIconUrl()` | Returns a link to weather icon hosted on https://openweathermap.org website. |
| `getForecastTime()` | Returns `LocalDateTime` object with weather forecast time. |
| `getTemperature()` | Returns `Temperature` instance that contains information about temperature. Available fields: `value`, `maxTemperature`, `minTemperature`, `feelsLike` and `unit`. |
| `getAtmosphericPressure()` | Returns `AtmosphericPressure` instance that contains information about atmospheric pressure. Available fields: `value`, `seaLevelValue`, `groundLevelValue` and `unit`. |
| `getHumidity()` | Returns `Humidity` instance that contains humidity percentage information. |
| `getWind()` | Returns `Wind` instance that contains wind information: `speed`, `degrees` and `unit`. |
| `getRain()` | Returns `Rain` instance that contains information about rain volume for the last 3 hours. Can be absent in case of no data. |
| `getSnow()` | Returns `Snow` instance that contains information about snow volume for the last 3 hours. Can be absent in case of no data. |
| `getClouds()` | Returns `Clouds` instance that contains information about cloudiness percentage. |
| `getForecastTimeISO()` | Returns String with time of data forecasted, ISO, UTC. |
| `getDayTime()` | Returns enumerations representing the part of day(day, night). |
| `toString()` | Returns informative string for the forecast of particular timestamp. |
### Constants and options
#### Language
| Constant | Description |
|-----------------------------------|-------------------------------|
| Language.ARABIC | Arabic language. |
| Language.BULGARIAN | Bulgarian language. |
| Language.CATALAN | Catalan language. |
| Language.CZECH | Czech language. |
| Language.GERMAN | German language. |
| Language.GREEK | Greek language. |
| Language.ENGLISH | English language. |
| Language.PERSIAN | Persian (Farsi) language. |
| Language.FINNISH | Finnish language. |
| Language.FRENCH | French language. |
| Language.GALICIAN | Galician language. |
| Language.CROATIAN | Croatian language. |
| Language.HUNGARIAN | Hungarian language. |
| Language.ITALIAN | Italian language. |
| Language.JAPANESE | Japanese language. |
| Language.KOREAN | Korean language. |
| Language.LATVIAN | Latvian language. |
| Language.LITHUANIAN | Lithuanian language. |
| Language.MACEDONIAN | Macedonian language. |
| Language.DUTCH | Dutch language. |
| Language.POLISH | Polish language. |
| Language.PORTUGUESE | Portuguese language. |
| Language.ROMANIAN | Romanian language. |
| Language.RUSSIAN | Russian language. |
| Language.SWEDISH | Swedish language. |
| Language.SLOVAK | Slovak language. |
| Language.SLOVENIAN | Slovenian language. |
| Language.SPANISH | Spanish language. |
| Language.TURKISH | Turkish language. |
| Language.UKRANIAN | Ukrainian language. |
| Language.VIETNAMESE | Vietnamese language. |
| Language.CHINESE_SIMPLIFIED | Chinese Simplified language. |
| Language.CHINESE_TRADITIONAL | Chinese Traditional language. |
#### Unit
| Constant | Description |
|----------------------|------------------------------------------------|
| Unit.METRIC_SYSTEM | Celsius, meter/sec, hPa, mm(rain, snow). |
| Unit.IMPERIAL_SYSTEM | Fahrenheit, miles/hour, hPa, mm(rain, snow). |
| Unit.STANDARD_SYSTEM | Kelvin, meter/sec, hPa, mm(rain, snow). |
### Dependencies
* com.fasterxml.jackson.core:jackson-databind:2.12.2
* org.slf4j:slf4j-api:1.7.30 (*compile*)
* junit:junit:4.13.1 (*test*)