config.go


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package main

import (
	_ "embed"
	"encoding/json"
	"log"
)

//go:embed configs/default.json
var defaultConfig []byte

type StartupConfig struct {
	MQTT struct {
		Broker      string `json:"broker"`
		ClientID    string `json:"client-id"`
		TopicPrefix string `json:"topic-prefix"`
	} `json:"mqtt"`

	Homematic struct {
		CCU                       string `json:"ccu"`
		PollingPeriodMilliseconds int `json:"polling-period-milliseconds"`
	} `json:"homematic"`
}

func (sc *StartupConfig) FromJSON(data []byte) error {
	return json.Unmarshal(data, sc)
}

func GetStartupConfig() StartupConfig {
	config := StartupConfig{}

	err := config.FromJSON(defaultConfig)
	if err != nil {
		log.Fatalf("Could not parse default config: %v", err)
	}

	return config
}