From c0ff8a0aa1d27c83a88b45e475e95fc5513782b8 Mon Sep 17 00:00:00 2001
From: Daniel Aberger <da@ixab.de>
Date: Thu, 4 Feb 2016 22:21:04 +0100
Subject: [PATCH] weather module added

---
 modules/weather/weather.go | 131 +++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 modules/weather/weather.go

diff --git a/modules/weather/weather.go b/modules/weather/weather.go
new file mode 100644
index 0000000..a53bd41
--- /dev/null
+++ b/modules/weather/weather.go
@@ -0,0 +1,131 @@
+// vi:ts=4:sts=4:sw=4:noet:tw=72
+//
+// flokatirc weather module
+//
+// Copyright (c) 2016 Daniel Aberger <da@ixab.de>
+
+package weather
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/sorcix/irc"
+)
+
+var (
+	sayCh             chan string
+	owmQueryAPIKey    = ""
+	owmQueryURLPrefix = "http://api.openweathermap.org/data/2.5/weather?q="
+	owmQueryURLSuffix = "&appid="
+	weatherPrefix     = "[WTHR] "
+)
+
+type WeatherObject struct {
+	Base   string `json:"base"`
+	Clouds struct {
+		All int `json:"all"`
+	} `json:"clouds"`
+	Cod   int `json:"cod"`
+	Coord struct {
+		Lat float64 `json:"lat"`
+		Lon float64 `json:"lon"`
+	} `json:"coord"`
+	Dt   int `json:"dt"`
+	ID   int `json:"id"`
+	Main struct {
+		GrndLevel float64 `json:"grnd_level"`
+		Humidity  int     `json:"humidity"`
+		Pressure  float64 `json:"pressure"`
+		SeaLevel  float64 `json:"sea_level"`
+		Temp      float64 `json:"temp"`
+		TempMax   float64 `json:"temp_max"`
+		TempMin   float64 `json:"temp_min"`
+	} `json:"main"`
+	Name string `json:"name"`
+	Rain struct {
+		ThreeH float64 `json:"3h"`
+	} `json:"rain"`
+	Sys struct {
+		Country string  `json:"country"`
+		Message float64 `json:"message"`
+		Sunrise int     `json:"sunrise"`
+		Sunset  int     `json:"sunset"`
+	} `json:"sys"`
+	Weather []struct {
+		Description string `json:"description"`
+		Icon        string `json:"icon"`
+		ID          int    `json:"id"`
+		Main        string `json:"main"`
+	} `json:"weather"`
+	Wind struct {
+		Deg   float64 `json:"deg"`
+		Speed float64 `json:"speed"`
+	} `json:"wind"`
+}
+
+func Init(ch chan string) {
+	log.Println("Initializing weather module")
+	sayCh = ch
+}
+
+func HandleMessage(m *irc.Message) {
+	tok := strings.Split(m.Trailing, " ")
+	if len(tok) < 1 {
+		return
+	}
+	switch tok[0] {
+	case "!w":
+		switch len(tok) {
+		case 1:
+			sayCh <- fmt.Sprintf("*\n%s", weatherPrefix+"Usage: !w <zip/city/state/country>")
+		default:
+			if strings.Compare(owmQueryAPIKey, "") == 0 {
+				sayCh <- fmt.Sprintf("*\n%s", weatherPrefix+"No API Key set.")
+			} else {
+				go getWeather(strings.Join(tok[1:], " "))
+			}
+		}
+	default:
+	}
+}
+func getWeather(query string) {
+	q := owmQueryURLPrefix + query + owmQueryURLSuffix + owmQueryAPIKey
+	r, err := http.Get(q)
+	if err != nil {
+		log.Println(err)
+		sayCh <- fmt.Sprintf("*\n%s", weatherPrefix+err.Error())
+	} else {
+		re, err := ioutil.ReadAll(r.Body)
+		if err != nil {
+			log.Println(err)
+			sayCh <- fmt.Sprintf("*\n%s", weatherPrefix+err.Error())
+		} else {
+			defer r.Body.Close()
+			var wo WeatherObject
+			err := json.Unmarshal(re, &wo)
+			if err != nil {
+				log.Println(err)
+				sayCh <- fmt.Sprintf("*\n%s", weatherPrefix+err.Error())
+			} else {
+				var description string
+				if len(wo.Weather) < 1 {
+					description = ""
+				} else {
+					description = ", " + wo.Weather[0].Description
+				}
+				sayCh <- fmt.Sprintf("*\n%s", weatherPrefix+wo.Name+", "+wo.Sys.Country+
+					" - Temp: "+strconv.Itoa(int(wo.Main.Temp-273.15))+
+					"°C"+description+
+					", Humidity: "+strconv.Itoa(int(wo.Main.Humidity))+
+					"%, Wind: "+strconv.Itoa(int(wo.Wind.Speed*3.6))+
+					" km/h")
+			}
+		}
+	}
+}