Hack for getting wx reports via inreach messaging.

inreachwx.go

package main

import (
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
	"strings"
)

func main() {
	for _, forecastSection := range weatherForecast()[0:1] {
		sendInReachMessage(forecastSection)
	}
}

func sendInReachMessage(message string) {
	trimmed := strings.TrimSpace(message)
Igo
	var toSend []string

	messageFragment := ""

	for _, line := range strings.Split(trimmed, "\n") {
		for _, word := range strings.Split(line, " ") {
			trimmedWord := strings.TrimSpace(word)
			if (len(messageFragment) + len(trimmedWord)) > 160 {
				toSend = append(toSend, messageFragment)
				messageFragment = trimmedWord
			} else {
				messageFragment = messageFragment + " " + trimmedWord
			}
		}
	}

	toSend = append(toSend, messageFragment)

	fmt.Printf("Sending %d inreach messages.\n", len(toSend))

	for _, fragmet := range toSend {
		trimmedFragment := strings.TrimSpace(fragmet)
		if trimmedFragment != "" {
			fmt.Printf("Sending inreach message : %s\n---\n", trimmedFragment)

			data := url.Values{
				"ReplyAddress" : []string {"wx@step.aero"},
				"ReplyMessage" : []string {trimmedFragment},
				"Guid"         : []string {"guid grabbed from watching traffic in the inreach messaging web ui"},
			}

			resp, err := http.PostForm("https://us0.explore.garmin.com/TextMessage/TxtMsg", data)

			defer resp.Body.Close()
			body, err := ioutil.ReadAll(resp.Body)

			if err != nil {
				fmt.Errorf("Unable to reach the InReach messaging service : %s", body, err)
			}
		}
	}
}

func weatherForecast() []string {
  // Change EKA out with local forecast options
	resp, err := http.Get("https://forecast.weather.gov/product.php?site=EKA&issuedby=EKA&product=AFD&format=txt&version=1&glossary=0")

	if err != nil {
		fmt.Errorf("Unable to reach the NWS", err)
		return nil
	}

	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)

	strBody := string(body)

	start := strings.Index(strBody, "AREA FORECAST DISCUSSION")
	end := strings.LastIndex(strBody, "$$")

	wxReport := strBody[start:end]

	fmt.Printf("Got weather report : %s", wxReport)

	return strings.Split(wxReport, "&&")
}