package templates

import (
	"fmt"
	"time"

	g "alin.ovh/gomponents"
	c "alin.ovh/gomponents/components"
	. "alin.ovh/gomponents/html"
	"vimagination.zapto.org/ics"

	"alin.ovh/homestead/domain/calendar"
	"alin.ovh/homestead/domain/web/templates"
)

func CalendarPage(site templates.SiteSettings, cal *calendar.Calendar) g.Node {
	return templates.Layout(site, templates.PageSettings{
		Title:      "Calendar",
		TitleAttrs: templates.Attrs{},
		BodyAttrs:  templates.Attrs{},
	}, Calendar(site, cal))
}

func Calendar(site templates.SiteSettings, cal *calendar.Calendar) g.Node {
	past := true
	dates, err := cal.Availability(2)
	if err != nil {
		panic(err)
	}

	return Div(Class("calendar"),
		H2(g.Text("Calendar")),
		P(g.Text("Here you can roughly see when I'm busy in the next two weeks.")),
		P(Class("only-small-portrait"), g.Text("Rotate to see calendar view and previous days.")),
		Section(Class("calendar-grid"),
			g.Map(dates, func(date *calendar.CalendarDate) g.Node {
				if past && date.IsToday() {
					past = false
				}

				return Section(c.Classes{
					"day":   true,
					"past":  past,
					"today": date.IsToday(),
				},
					H3(
						Time(
							DateTime(date.Format(time.DateOnly)),
							g.Text(date.Format("Mon _2"))),
					),
					g.Map(date.BusyPeriods, func(e *calendar.Busy) g.Node {
						return Div(
							c.Classes{
								"event":     true,
								"tentative": e.Type == ics.FreeBusyTypeBusyTentative,
							},
							TitleAttr(
								fmt.Sprintf(
									"%s–%s",
									e.StartTime.Format(time.RFC1123),
									e.EndTime.Format(time.RFC1123),
								),
							),
							g.If(e.StartTime.Before(date.BeginningOfDay()),
								CTime(date.BeginningOfDay()),
								CTime(e.StartTime),
							),
							g.Text("–"),
							g.If(e.EndTime.After(date.EndOfDay()),
								CTime(date.EndOfDay()),
								CTime(e.EndTime),
							),
							g.If(e.Type == ics.FreeBusyTypeBusyTentative,
								g.Text("?"),
							),
						)
					}),
				)
			}),
		),
		Footer(
			P(g.Textf("Timezone is %s", site.Timezone.String())),
		),
	)
}

func CTime(date calendar.Date) g.Node {
	return Time(
		DateTime(date.Format(time.RFC3339)),
		g.Text(date.Format("15:04")),
	)
}