Move command line flags into it's own module

_sample_configs/simple_config.yml

@@ -1,6 +1,6 @@
 wtf:
   colors:
-    background: gray
+    #background: gray
     border:
       focusable: darkslateblue
       focused: orange

flags/flags.go

@@ -0,0 +1,54 @@
+package flags
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	goFlags "github.com/jessevdk/go-flags"
+	"github.com/senorprogrammer/wtf/wtf"
+)
+
+type Flags struct {
+	Config  string `short:"c" long:"config" optional:"yes" description:"Path to config file"`
+	Module  string `short:"m" long:"module" optional:"yes" description:"Display info about a specific module, i.e.: 'wtf -m=todo'"`
+	Version bool   `short:"v" long:"version" description:"Show Version Info"`
+}
+
+func NewFlags() *Flags {
+	flags := Flags{}
+	return &flags
+}
+
+/* -------------------- Exported Functions -------------------- */
+
+func (flags *Flags) HasConfig() bool {
+	return len(flags.Config) > 0
+}
+
+func (flags *Flags) HasModule() bool {
+	return len(flags.Module) > 0
+}
+
+func (flags *Flags) Parse(version string) {
+	parser := goFlags.NewParser(flags, goFlags.Default)
+	if _, err := parser.Parse(); err != nil {
+		if flagsErr, ok := err.(*goFlags.Error); ok && flagsErr.Type == goFlags.ErrHelp {
+			os.Exit(0)
+		}
+	}
+
+	if !flags.HasConfig() {
+		homeDir, err := wtf.Home()
+		if err != nil {
+			os.Exit(1)
+		}
+
+		flags.Config = filepath.Join(homeDir, ".wtf", "config.yml")
+	}
+
+	if flags.Version {
+		fmt.Printf("Version: %s\n", version)
+		os.Exit(0)
+	}
+}

wtf.go

@@ -19,6 +19,7 @@ import (
 	"github.com/senorprogrammer/wtf/cryptoexchanges/bittrex"
 	"github.com/senorprogrammer/wtf/cryptoexchanges/blockfolio"
 	"github.com/senorprogrammer/wtf/cryptoexchanges/cryptolive"
+	"github.com/senorprogrammer/wtf/flags"
 	"github.com/senorprogrammer/wtf/gcal"
 	"github.com/senorprogrammer/wtf/git"
 	"github.com/senorprogrammer/wtf/github"
@@ -260,17 +261,17 @@ func makeWidgets(app *tview.Application, pages *tview.Pages) {
 func main() {
 	log.SetFlags(log.LstdFlags | log.Lshortfile)
 
-	cmdFlags := wtf.NewCommandFlags()
-	cmdFlags.Parse(version)
+	flags := flags.NewFlags()
+	flags.Parse(version)
 
-	if cmdFlags.HasModule() {
-		help.Display(cmdFlags.Module)
+	if flags.HasModule() {
+		help.Display(flags.Module)
 	}
 
 	cfg.CreateConfigDir()
 	cfg.WriteConfigFile()
 
-	loadConfig(cmdFlags.Config)
+	loadConfig(flags.Config)
 	setTerm()
 
 	app := tview.NewApplication()
@@ -285,7 +286,7 @@ func main() {
 
 	// Loop in a routine to redraw the screen
 	go redrawApp(app)
-	go watchForConfigChanges(app, cmdFlags.Config, display.Grid, pages)
+	go watchForConfigChanges(app, flags.Config, display.Grid, pages)
 
 	if err := app.SetRoot(pages, true).Run(); err != nil {
 		fmt.Printf("An error occurred: %v\n", err)