Add debug output support

cmd/config.go

@@ -17,14 +17,28 @@ type Config struct {
 	OutputFormat string               `toml:"output_format"`
 	Colors       map[string][]float32 `toml:"colors"`
 	userAgent    string
+	Debug        bool `toml:"debug"`
 }
 
 var (
 	DefaultConfig = Config{
 		userAgent: initUserAgent(),
 	}
+	globalConfig *Config = NewConfig()
 )
 
+func NewConfig() *Config {
+	c := new(Config)
+	c.userAgent = initUserAgent()
+	c.Debug = false
+	c.OutputFormat = "simple"
+	return c
+}
+
+func GetConfig() *Config {
+	return globalConfig
+}
+
 // Validate configuration struct
 func (c *Config) Validate() error {
 	var err error
@@ -69,7 +83,7 @@ func (c *Config) MergeWithEnv() {
 
 func LoadConfig(s string) (*Config, error) {
 	var err error
-	var c *Config = &Config{}
+	var c *Config = GetConfig()
 
 	*c = DefaultConfig
 
@@ -83,7 +97,7 @@ func LoadConfig(s string) (*Config, error) {
 func LoadConfigFile(configPath string) (*Config, error) {
 	var err error
 
-	var c *Config = &Config{}
+	var c *Config = GetConfig()
 
 	*c = DefaultConfig
 

cmd/ls.go

@@ -35,6 +35,9 @@ func LsCmd(ctx Context) (int, error) {
 	}
 
 	lights, err := c.ListLights(selector)
+
+	Debugf("%+v\n", lights)
+
 	if err != nil {
 		return ExitFailure, err
 	}

cmd/main.go

@@ -20,14 +20,18 @@ func init() {
 	RegisterCommand(NewCmdToggle())
 	RegisterCommand(NewCmdVersion())
 	RegisterCommand(NewCmdBreathe())
+
+	flag.BoolVar(&debugFlag, "debug", false, "debug mode")
+	flag.BoolVar(&debugFlag, "d", false, "debug mode")
 }
 
 var Version string
 var BuildDate string
 var GitCommit string
+var debugFlag bool
 
 func Main(args []string) (int, error) {
-	var config *Config
+	var config *Config = GetConfig()
 	var err error
 	var i int
 
@@ -53,12 +57,15 @@ func Main(args []string) (int, error) {
 		return ExitFailure, fmt.Errorf("fatal: %s", err)
 	}
 
+	config.Debug = debugFlag
+
 	command := args[i]
 	i++
 
 	c := lifx.NewClient(
 		config.AccessToken,
 		lifx.WithUserAgent(config.userAgent),
+		lifx.WithDebug(debugFlag),
 	)
 
 	Context := Context{

cmd/util.go

@@ -60,3 +60,9 @@ func YesNo(v bool) string {
 	}
 	return "no"
 }
+
+func Debugf(format string, a ...interface{}) {
+	if GetConfig().Debug {
+		fmt.Printf(format, a...)
+	}
+}