Post changes in Fortnite's server status to Discord.

fortnite-status-discord.go

package main

import (
	"encoding/json"
	"fmt"
	"io"
	"io/ioutil"
	"log"
	"net/http"
	"net/url"
	"strings"
	"time"
)

const statusURL = "https://lightswitch-public-service-prod06.ol.epicgames.com/lightswitch/api/service/bulk/status?serviceId=Fortnite"

const webhook = "https://discordapp.com/api/webhooks/.../..."

const interval = 298 * time.Second

const template = "Status %q: %s"

func notify(status, message string) {
	log.Println("Sending message to Discord")
	client := &http.Client{}
	form := &url.Values{}
	form.Set("content", fmt.Sprintf(template, status, message))
	req, _ := http.NewRequest("POST", webhook, strings.NewReader(form.Encode()))
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	io.Copy(ioutil.Discard, resp.Body)
	resp.Body.Close()
}

func check(prev string) (next string) {
	defer func() {
		err := recover()
		if err != nil {
			log.Println("panic:", err)
		}
	}()
	log.Println("Checking status...")

	client := &http.Client{}
	req, _ := http.NewRequest("GET", statusURL, nil)
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	data := make([]map[string]interface{}, 0)
	err = json.NewDecoder(resp.Body).Decode(&data)
	resp.Body.Close()
	if err != nil {
		panic(err)
	}
	status := data[0]["status"].(string)
	message := data[0]["message"].(string)
	log.Println("Status:", status)
	if prev != "" && prev != status {
		notify(status, message)
	}
	return status
}

func main() {
	prev := ""
	for {
		prev = check(prev)
		time.Sleep(interval)
	}
}