Add a refresh command

Forces data to reload

main.go

@@ -79,6 +79,7 @@ func main() {
 		DailyCommand{},
 		HourlyCommand{},
 		OptionsCommand{},
+		RefreshCommand{},
 	}
 
 	workflow.Run(commands)

refresh.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"time"
+
+	"github.com/jason0x43/go-alfred"
+)
+
+// RefreshCommand forces data to refresh
+type RefreshCommand struct{}
+
+// About returns information about a command
+func (c RefreshCommand) About() alfred.CommandDef {
+	return alfred.CommandDef{
+		Keyword:     "refresh",
+		Description: "Force forecast data to be re-downloaded",
+		IsEnabled:   true,
+		Arg: &alfred.ItemArg{
+			Keyword: "refresh",
+		},
+	}
+}
+
+// Items returns the items for the command
+func (c RefreshCommand) Items(arg, data string) (items []alfred.Item, err error) {
+	dlog.Printf("Running RefreshCommand")
+
+	cache.Time = time.Time{}
+	if err = alfred.SaveJSON(cacheFile, &cache); err == nil {
+		items = append(items, alfred.Item{
+			Title:    "Refreshed!",
+			Subtitle: "Data will be reloaded on the next forecast",
+		})
+	}
+
+	return
+}