package components

import (
	"fmt"
	"time"

	g "alin.ovh/gomponents"
	. "alin.ovh/gomponents/html"
	"github.com/dustin/go-humanize"

	"alin.ovh/searchix/internal/config"
	"alin.ovh/searchix/internal/importer"
)

func SearchForm(tdata TemplateData, r ResultData) g.Node {
	return Search(Form(
		ID("search"),
		FieldSet(
			Legend(
				ID("legend"),
				H2(g.Textf("%s search", sourceNameAndType(tdata.Source))),
				A(
					Class("help"),
					Target("_blank"),
					Href("https://blevesearch.com/docs/Query-String-Query/"),
					g.Text("advanced query syntax"),
				),
			),
			Input(
				ID("query"),
				Aria("labelledby", "legend"),
				MinLength("2"),
				Name("query"),
				Type("search"),
				Value(r.Query),
				AutoFocus(),
				g.Attr("spellcheck", "false"),
				g.Attr("autocapitalize", "none"),
			),
			Button(g.Text("Search")),
		),
	))
}

func SearchPage(tdata TemplateData, r ResultData, children ...g.Node) g.Node {
	return Page(
		tdata,
		P(
			g.Text("Search Nix packages and options from "),
			MapCommaList(tdata.Sources, func(source *config.Source) g.Node {
				return A(Href(source.Repo.String()), g.Text(source.Name))
			}),
		),
		g.If(!importer.Job.StartedAt.IsZero(),
			P(Class("notice"),
				g.Text("Indexing in progress, started "),
				Time(
					DateTime(importer.Job.StartedAt.Format(time.RFC3339)),
					Title(importer.Job.StartedAt.Format(time.DateTime)),
					g.Text(time.Since(importer.Job.StartedAt).Round(time.Second).String()),
				),
				g.Text(" ago. "),
				g.Iff(!importer.Job.LastRun.FinishedAt.IsZero(), func() g.Node {
					duration := importer.Job.LastRun.FinishedAt.Sub(importer.Job.LastRun.StartedAt)

					return g.Group([]g.Node{
						g.Text("Last run took "),
						Time(
							DateTime(DurationDateTimeString(duration)),
							Title(duration.Round(time.Second).String()),
							g.Text(duration.Round(time.Minute).String()),
						),
					})
				}),
			),
			P(
				g.Text("Indexing last ran "),
				Time(
					DateTime(importer.Job.LastRun.FinishedAt.Format(time.RFC3339)),
					Title(importer.Job.LastRun.FinishedAt.Format(time.DateTime)),
					g.Text(
						humanize.RelTime(
							importer.Job.LastRun.FinishedAt,
							time.Now(),
							"ago",
							"in the future",
						),
					),
				),
				g.Text(", will run again in "),
				Time(
					DateTime(importer.Job.NextRun.Format(time.RFC3339)),
					Title(importer.Job.NextRun.Format(time.DateTime)),
					g.Textf("%.0f hours", time.Until(importer.Job.NextRun).Hours()),
				),
				g.Text("."),
			),
		),
		script(tdata.Assets.ByPath["/search.js"]),
		SearchForm(tdata, r),
		Section(
			ID("results"),
			Role("list"),
			Aria("label", "search results"),
			g.Group(children),
		),
		Dialog(
			ID("dialog"),
			Button(AutoFocus(), g.Text("Close")),
		),
		NoScript(
			P(
				Class("notice"),
				g.Text("Everything should work fine without JavaScript. If that is not the case, "),
				A(
					Href("https://codeberg.org/alanpearce/searchix/issues"),
					g.Text("report an issue"),
				),
			),
		),
	)
}

func MapCommaList[T any](items []T, fn func(T) g.Node) g.Node {
	out := make([]g.Node, (len(items) * 2))
	j := 0
	last := len(items) - 2
	for i := range items {
		out[j] = fn(items[i])
		j++
		if i <= last {
			if i == last {
				out[j] = g.Text(" and ")
			} else {
				out[j] = g.Text(", ")
			}
		}
		j++
	}

	return g.Group(out)
}

func DurationDateTimeString(d time.Duration) string {
	// PThHmMsS
	return fmt.Sprintf("PT%dH%dM%dS", d/time.Hour, d/time.Minute%60, d/time.Second%60)
}