package bamboohr

import (
	"fmt"
	"time"

	"github.com/rivo/tview"
	"github.com/senorprogrammer/wtf/wtf"
)

type Widget struct {
	wtf.BaseWidget
	View *tview.TextView
}

func NewWidget() *Widget {
	widget := Widget{
		BaseWidget: wtf.BaseWidget{
			Name:            "BambooHR",
			RefreshedAt:     time.Now(),
			RefreshInterval: 15,
		},
	}

	widget.addView()
	go widget.refresher()

	return &widget
}

/* -------------------- Exported Functions -------------------- */

func (widget *Widget) Refresh() {
	items := Fetch()

	widget.View.SetTitle(fmt.Sprintf(" 👽 Away (%d) ", len(items)))
	widget.RefreshedAt = time.Now()

	widget.View.Clear()
	fmt.Fprintf(widget.View, "%s", widget.contentFrom(items))
}

/* -------------------- Unexported Functions -------------------- */

func (widget *Widget) addView() {
	view := tview.NewTextView()

	view.SetBorder(true)
	view.SetDynamicColors(true)
	view.SetTitle(widget.Name)
	view.SetWrap(false)

	widget.View = view
}

func centerText(str string, width int) string {
	return fmt.Sprintf("%[1]*s", -width, fmt.Sprintf("%[1]*s", (width+len(str))/2, str))
}

func (widget *Widget) contentFrom(items []Item) string {
	if len(items) == 0 {
		return fmt.Sprintf("\n\n\n\n\n\n\n%s", centerText("[grey]no one[white]", 52))
	}

	str := ""

	for _, item := range items {
		str = str + widget.display(item)
	}

	return str
}

func (widget *Widget) display(item Item) string {
	var str string

	if item.IsOneDay() {
		str = fmt.Sprintf(" [green]%s[white]\n %s\n\n", item.Name(), item.PrettyEnd())
	} else {
		str = fmt.Sprintf(" [green]%s[white]\n %s - %s\n\n", item.Name(), item.PrettyStart(), item.PrettyEnd())
	}

	return str
}

func (widget *Widget) refresher() {
	tick := time.NewTicker(time.Duration(widget.RefreshInterval) * time.Minute)
	quit := make(chan struct{})

	for {
		select {
		case <-tick.C:
			widget.Refresh()
		case <-quit:
			tick.Stop()
			return
		}
	}
}