add args

Signed-off-by: Jeff Carr <jcarr@wit.com>

Makefile

@@ -2,9 +2,14 @@ all:
 	-git pull
 	echo "build it!"
 	GO111MODULE=off go build -v -x
-	./powerpaneld
+	./powerpaneld --hostname=breen
 	# su -c "setcap 'cap_net_bind_service=+ep' go.wit.com"
 
+run:
+	GO111MODULE=off go build -v -x
+	-systemctl stop powerpaneld.service
+	./powerpaneld
+
 goimports:
 	goimports -w *.go
 

args.go

@@ -0,0 +1,21 @@
+package main
+
+/*
+	this parses the command line arguements
+
+	this enables command line options from other packages like 'gui' and 'log'
+*/
+
+import (
+	"go.wit.com/dev/alexflint/arg"
+)
+
+var args struct {
+	ListRepos bool `arg:"--list-repos" help:"list all repositories"`
+	Port int `arg:"--port" help:"port to run on (default is 2520)"`
+	Hostname string `arg:"--hostname" help:"hostname to use"`
+}
+
+func init() {
+	arg.MustParse(&args)
+}

main.go

@@ -45,6 +45,16 @@ func okHandler(w http.ResponseWriter, r *http.Request) {
 }
 
 func main() {
+	var hostname string = args.Hostname
+
+	if hostname == "" {
+		hostname = "localhost"
+	}
+
+	log.Info("curl http://" + hostname + ":3000/powersource    # shows if your power grid is up")
+	log.Info("curl http://" + hostname + ":3000/lastoutage     # shows the last time your power grid went down")
+	log.Info("hostname =", hostname)
+
 	http.HandleFunc("/", okHandler)
 	err := http.ListenAndServe(":3000", nil)
 	if err != nil {