package gcal

import (
	"fmt"
	"strings"
	"time"

	"github.com/rivo/tview"
	"google.golang.org/api/calendar/v3"
)

type Widget struct {
	RefreshedAt time.Time
	View        *tview.TextView
}

func NewWidget() *Widget {
	widget := Widget{
		RefreshedAt: time.Now(),
	}

	widget.addView()

	return &widget
}

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

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

	widget.View.SetTitle(" 🐸 Calendar ")
	widget.RefreshedAt = time.Now()

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

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

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

	view.SetBorder(true)
	view.SetDynamicColors(true)
	view.SetTitle(" Calendar ")

	widget.View = view
}

func (widget *Widget) contentFrom(events *calendar.Events) string {
	str := ""

	for _, item := range events.Items {
		ts, _ := time.Parse(time.RFC3339, item.Start.DateTime)
		timestamp := ts.Format("Mon Jan _2 15:04:05 2006")

		str = str + fmt.Sprintf(" [%s]%s[white]\n [%s]%s[white]\n\n", titleColor(item), item.Summary, descriptionColor(item), timestamp)
	}

	return str
}

func titleColor(item *calendar.Event) string {
	ts, _ := time.Parse(time.RFC3339, item.Start.DateTime)

	color := "red"
	if strings.Contains(item.Summary, "1on1") {
		color = "green"
	}

	if ts.Before(time.Now()) {
		color = "grey"
	}

	return color
}

func descriptionColor(item *calendar.Event) string {
	ts, _ := time.Parse(time.RFC3339, item.Start.DateTime)

	color := "white"
	if ts.Before(time.Now()) {
		color = "grey"
	}

	return color

}