feat: added desktop notification integration

.gitignore

@@ -2,3 +2,4 @@ tags
 bin/*
 !bin/.gitkeep
 dist/
+Pominal

README.md

@@ -1,3 +1,7 @@
 # Pominal
 
 Pominal is a Pomodoro application for the terminal. Pominal is written in Go.
+
+## Assets
+
+Icon [image](https://pixabay.com/vectors/eat-edible-food-fruit-red-tomato-1299904/) from [OpenClipart-Vectors](https://pixabay.com/users/openclipart-vectors-30363/?utm_source=link-attribution&utm_medium=referral&utm_campaign=image&utm_content=1299904) from [Pixabay](https://pixabay.com/?utm_source=link-attribution&utm_medium=referral&utm_campaign=image&utm_content=1299904)

alerts.go

@@ -0,0 +1,62 @@
+/*
+  Pominal
+  Copyright (C) 2019  Daniel Anglin
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/0xAX/notificator"
+)
+
+const iconPath string = "assets/icon/tomato.png"
+
+var notifier *notificator.Notificator
+
+// initNotifier initialises the new desktop notifier.
+func initNotifier() {
+	notifier = notificator.New(notificator.Options{
+		DefaultIcon: getIconPath(),
+		AppName:     "Pominal",
+	})
+}
+
+// getIconPath returns the absolute path of the tomoato icon
+// used for desktop notifications.
+// If there is an error getting the path to the executing program
+// then an empty string is returned.
+func getIconPath() string {
+
+	var result string
+	exe, err := os.Executable()
+	if err != nil {
+		fmt.Printf("ERROR: Unable to determine path to this executable. %s", err.Error())
+		return result
+	}
+	result = filepath.Dir(exe) + "/" + iconPath
+	return result
+}
+
+// alert pushes a desktop notification
+func alert(oldLabel, newLabel string) {
+	title := oldLabel + " timer has stopped"
+	text := newLabel + " timer has started"
+	notifier.Push(title, text, "", notificator.UR_NORMAL)
+}

go.mod

@@ -0,0 +1,5 @@
+module gitlab.com/dananglin/Pominal
+
+go 1.12
+
+require github.com/0xAX/notificator v0.0.0-20181105090803-d81462e38c21

go.sum

@@ -0,0 +1,2 @@
+github.com/0xAX/notificator v0.0.0-20181105090803-d81462e38c21 h1:moSC7ACaTejHmVRRwfDTMgByRSwjg2vZooncdWLj7o8=
+github.com/0xAX/notificator v0.0.0-20181105090803-d81462e38c21/go.mod h1:NtXa9WwQsukMHZpjNakTTz0LArxvGYdPA9CjIcUSZ6s=

main.go

@@ -70,6 +70,8 @@ func main() {
 		os.Exit(0)
 	}
 
+	initNotifier()
+
 	workTimeDuration, err := time.ParseDuration(workTimer)
 	if err != nil {
 		fmt.Printf("ERROR: Unable to set the work timer. %s", err.Error())
@@ -128,7 +130,8 @@ infinite:
 			fmt.Printf("\n%s timer has finished\n", p.label)
 			p.timer.Stop()
 			t.Stop()
-			time.Sleep(2 * time.Second)
+			time.Sleep(1 * time.Second)
+			oldLabel := p.label
 			switch p.label {
 			case workTimerLabel:
 				if workCycleCount >= p.maxWorkCycles {
@@ -145,6 +148,8 @@ infinite:
 				p.Start(workTimerLabel, workCycleCount)
 			}
 			t = time.NewTicker(1 * time.Second)
+			newLabel := p.label
+			alert(oldLabel, newLabel)
 		}
 	}
 }
@@ -195,6 +200,7 @@ func printScreen(remaining float64, pominalCount, workCycle, maxWorkCycle int, l
 }
 
 // clearScreen clears the terminal screen
+// TODO: To be removed when TUI is implemented
 func clearScreen() {
 	cmd := exec.Command("clear")
 	cmd.Stdout = os.Stdout