Finished major refactor

config/config.go

@@ -0,0 +1,78 @@
+package config
+
+import (
+	"automation/device"
+	"encoding/base64"
+	"log"
+	"os"
+
+	"github.com/kelseyhightower/envconfig"
+	"gopkg.in/yaml.v3"
+)
+
+type config struct {
+	Hue struct {
+		Token string `yaml:"token" envconfig:"HUE_TOKEN"`
+		IP    string `yaml:"ip" envconfig:"HUE_IP"`
+	} `yaml:"hue"`
+
+	Ntfy struct {
+		Topic string `yaml:"topic" envconfig:"NTFY_TOPIC"`
+	} `yaml:"ntfy"`
+
+	MQTT struct {
+		Host     string `yaml:"host" envconfig:"MQTT_HOST"`
+		Port     int    `yaml:"port" envconfig:"MQTT_PORT"`
+		Username string `yaml:"username" envconfig:"MQTT_USERNAME"`
+		Password string `yaml:"password" envconfig:"MQTT_PASSWORD"`
+		ClientID string `yaml:"client_id" envconfig:"MQTT_CLIENT_ID"`
+	} `yaml:"mqtt"`
+
+	Kasa struct {
+		Outlets map[device.InternalName]string `yaml:"outlets"`
+	} `yaml:"kasa"`
+
+	Computer map[device.InternalName]struct {
+		MACAddress string `yaml:"mac"`
+		Url        string `yaml:"url"`
+	} `yaml:"computers"`
+
+	Google struct {
+		Username string `yaml:"username" envconfig:"GOOGLE_USERNAME"`
+		Credentials Credentials `yaml:"credentials" envconfig:"GOOGLE_CREDENTIALS"`
+	} `yaml:"google"`
+}
+
+type Credentials []byte
+
+func (c *Credentials) Decode(value string) error {
+	b, err := base64.StdEncoding.DecodeString(value)
+	*c = b
+
+	return err
+}
+
+func Get() config {
+	// First load the config from the yaml file
+	f, err := os.Open("config.yml")
+	if err != nil {
+		log.Fatalln("Failed to open config file", err)
+	}
+	defer f.Close()
+
+	var cfg config
+	decoder := yaml.NewDecoder(f)
+	err = decoder.Decode(&cfg)
+	if err != nil {
+		log.Fatalln("Failed to parse config file", err)
+	}
+
+	// Then load values from environment
+	// This can be used to either override the config or pass in secrets
+	err = envconfig.Process("", &cfg)
+	if err != nil {
+		log.Fatalln("Failed to parse environmet config", err)
+	}
+
+	return cfg
+}