/*
Copyright © 2022 Brian Buller <brian@bullercodeworks.com>

*/
package cmd

import (
	"fmt"
	"strconv"
	"strings"
	"time"

	"git.bullercodeworks.com/brian/gime/cli"
	"git.bullercodeworks.com/brian/gime/util"
	"git.bullercodeworks.com/brian/go-timertxt"
	"github.com/spf13/cobra"
)

// modCmd represents the mod command
var modCmd = &cobra.Command{
	Use:   "mod",
	Short: "Modify a timer",
	RunE:  opMod,
}

func init() {
	rootCmd.AddCommand(modCmd)
}

func opMod(cmd *cobra.Command, args []string) error {
	var err error
	p := cli.Program{}
	err = p.Initialize()
	if err != nil {
		return err
	}
	if err = p.LoadTimerList(); err != nil {
		return err
	}
	var timer *timertxt.Timer
	var contexts, projects []string
	id, err := strconv.Atoi(args[0])
	if err != nil {
		// We didn't have a timer id, so try to modify the first active timer
		active := p.TimerList.GetActiveTimers().GetTimerSlice()
		if len(active) > 0 {
			timer = active[0]
		} else {
			// And we don't have any active timers
			return fmt.Errorf("No active timers, 'id' must be provided: %w", err)
		}
	} else {
		args = args[1:]
		if timer, err = p.TimerList.GetTimer(id); err != nil {
			return fmt.Errorf("Error getting timer %d: %w", id, err)
		}
	}
	var start, end time.Time

	for _, v := range args {
		pts := strings.Split(v, "=")
		switch pts[0] {
		case "beginning", "start":
			if start, err = util.ParseFuzzyTime(pts[1]); err != nil {
				return fmt.Errorf("Error parsing start time: %w", err)
			}
		case "stop", "finish", "end":
			if end, err = util.ParseFuzzyTime(pts[1]); err != nil {
				return fmt.Errorf("Error parsing end time: %w", err)
			}
		case "project", "projects":
			projects = strings.Split(pts[1], ",")
		case "context", "contexts":
			contexts = strings.Split(pts[1], ",")
		}
	}
	if len(contexts) > 0 {
		for k := range contexts {
			contexts[k] = strings.TrimPrefix(contexts[k], "@")
		}
		timer.Contexts = contexts
	}
	if len(projects) > 0 {
		for k := range projects {
			projects[k] = strings.TrimPrefix(projects[k], "+")
		}
		timer.Projects = projects
	}
	if !start.IsZero() {
		timer.StartDate = start
	}
	if !end.IsZero() {
		timer.FinishDate = end
		timer.Finished = true
	}
	fmt.Println("Modified Timer:")
	fmt.Println(util.TimerToFriendlyString(timer))

	if err := p.WriteTimerList(); err != nil {
		return fmt.Errorf("Error writing timer list: %w", err)
	}
	return nil
}