status/main.go

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"os"

	"git.1e99.eu/1e99/status/routes"
	"git.1e99.eu/1e99/status/services"
)

type Config struct {
	Services []json.RawMessage `json:"services"`
}

func run() error {
	var err error

	config, err := loadConfig()
	if err != nil {
		return fmt.Errorf("failed to load config: %s", err)
	}

	serviceList := make([]*services.Service, 0)
	for _, raw := range config.Services {
		service, err := services.NewService(raw)
		if err != nil {
			log.Printf("Failed to create service: %s", err)
		}

		stop := make(chan bool)
		go service.Start(stop)

		serviceList = append(serviceList, service)
	}

	mux := http.NewServeMux()

	mux.HandleFunc("GET /{$}", routes.Index(serviceList))

	address := os.Getenv("STATUS_ADDRESS")
	if address == "" {
		address = ":3000"
	}

	log.Printf("Listening on %s", address)
	err = http.ListenAndServe(address, mux)
	if err != nil {
		return err
	}

	return nil
}

func loadConfig() (Config, error) {
	raw, err := os.ReadFile("config.json")
	if err != nil {
		return Config{}, nil
	}

	var config Config
	err = json.Unmarshal(raw, &config)
	if err != nil {
		return Config{}, nil
	}

	return config, nil
}

func main() {
	err := run()
	if err != nil {
		log.Fatalf("%s", err)
	}
}