package main

import (
	"fmt"
	"strings"
	"time"

	gime "git.bullercodeworks.com/brian/gime-lib"
)

// cmdStartTimer takes a list of arguments and returns the return code
// to be passed along to os.Exit
func cmdStartTimer(args []string) int {
	var err error
	var entry *gime.TimeEntry
	// By default we start the timer now
	tm := time.Now()
	tags, rem := pullTagsFromArgs(args)

	if len(rem) > 0 {
		// Check if the first argument looks like a date/time
		tm, err = parseFuzzyTime(rem[0])
	}

	tc := new(gime.TagCollection)
	for i := range tags {
		tc.Push(tags[i])
	}

	if entry, err = gime.CreateTimeEntry(tm, time.Time{}, tc); err != nil {
		fmt.Println(err)
		return 1
	}

	if err = gdb.SaveTimeEntry(entry); err != nil {
		fmt.Println(err)
		return 1
	}

	fmt.Println("Started:", TimerToString(entry))
	return 0
}

func cmdAddTimer(args []string) int {
	var err error
	var entry *gime.TimeEntry
	// By default we start the timer now
	tags, rem := pullTagsFromArgs(args)
	var beg, end time.Time
	for _, opt := range rem {
		var tmpBeg, tmpEnd time.Time
		if strings.Contains(opt, "-") {
			pts := strings.Split(opt, "-")
			if len(pts[0]) > 0 {
				// This should be the starting date
				tmpBeg, err = parseFuzzyTime(pts[0])
				if err != nil {
					continue
				}
			}
			if len(pts[1]) > 0 {
				// This should be the ending date
				tmpEnd, err = parseFuzzyTime(pts[1])
				if err != nil {
					continue
				}
			}
		}
		if !tmpBeg.IsZero() || !tmpEnd.IsZero() {
			beg, end = tmpBeg, tmpEnd
		}
	}
	if end.IsZero() {
		end = time.Now()
	}
	tc := new(gime.TagCollection)
	for i := range tags {
		tc.Push(tags[i])
	}
	if entry, err = gime.CreateTimeEntry(beg, end, tc); err != nil {
		fmt.Println(err)
		return 1
	}
	if err = gdb.SaveTimeEntry(entry); err != nil {
		fmt.Println(err)
		return 1
	}
	fmt.Println("Added Time Entry:", TimerToString(entry))
	return 0
}

func cmdContinueTimer(args []string) int {
	// Get the last running timer and start a new one with the same tags
	te, err := getMostRecentTimeEntry()
	if err != nil {
		fmt.Println(err.Error())
		return 1
	}
	tagColl := te.GetTags()
	var tags []string
	for i := 0; i < tagColl.Length(); i++ {
		tags = append(tags, "+"+tagColl.Get(i))
	}
	args = append(args, tags...)
	return cmdStartTimer(args)
}

// switchTimer performs a stop on any currently running timers
// and starts a new timer with the given arguments
func cmdSwitchTimer(args []string) int {
	stopId := "@all"
	stopIdIdx := -1
	for i := range args {
		// see if we have a timer id in the args
		if args[i][0] == '@' {
			stopId = args[i]
			stopIdIdx = i
		}
	}
	if stopIdIdx >= 0 {
		args = append(args[:stopIdIdx], args[stopIdIdx+1:]...)
	}
	if cmdStopTimer([]string{stopId}) != 0 {
		// Error while stopping timers
		return 1
	}
	return cmdStartTimer(args)
}