/*
  Pominal
  Copyright (C) 2020  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 (
	"flag"
	"fmt"
	"log"
	"os"

	"github.com/rivo/tview"
)

var (
	version       string
	installPrefix string
)

const (
	workTimerLabel            string  = "Work"
	shortBreakTimerLabel      string  = "Short break"
	longBreakTimerLabel       string  = "Long break"
	defaultWorkTime           string  = "25m"
	defaultShortBreakTime     string  = "5m"
	defaultLongBreakTime      string  = "20m"
	defaultMaxWorkSessions    int     = 4
	defaultNotificationMsgFmt string  = "%s session is now running."
	minimumSessionTime        float64 = 60
)

func main() {
	var (
		workTime        string
		shortBreakTime  string
		longBreakTime   string
		maxWorkSessions int
		printVersion    bool
		configFilePath  string
	)

	flag.StringVar(&workTime, "work", "", "sets the timer for your work session.")
	flag.StringVar(&shortBreakTime, "short-break", "", "sets the timer for your short break.")
	flag.StringVar(&longBreakTime, "long-break", "", "sets the timer for your long break.")
	flag.IntVar(&maxWorkSessions, "max-work-sessions", 0, "sets the maximum number of work cycles to complete before taking a long break.")
	flag.BoolVar(&printVersion, "version", false, "print version and exit.")
	flag.StringVar(&configFilePath, "config", "", "the path to your Pominal configuration file.")
	flag.Parse()

	if printVersion {
		Version()
		os.Exit(0)
	}

	config, err := newPominalConfig(configFilePath, workTime, shortBreakTime, longBreakTime, maxWorkSessions)
	if err != nil {
		log.Fatalf("ERROR: Unable to create the Pominal configuration. %s", err.Error())
	}

	pominal, err := newPominal(config)
	if err != nil {
		log.Fatalf("ERROR: Unable to create Pominal. %s", err.Error())
	}

	app := tview.NewApplication()
	infoUI := newInfoUI()
	timerUI := newTimerUI(app)
	flex := newFlex(infoUI, timerUI)

	go pominal.Run(infoUI, timerUI)

	if err := app.SetRoot(flex, false).SetFocus(flex).Run(); err != nil {
		panic(err)
	}
}

func Version() {
	fmt.Printf("Pominal version %s\n", version)
}