/*
 * SPDX-FileCopyrightText: 2023 jordi fita mas <jfita@peritasoft.com>
 * SPDX-License-Identifier: AGPL-3.0-only
 */

package app

import (
	"dev.tandem.ws/tandem/camper/pkg/auth"
	"dev.tandem.ws/tandem/camper/pkg/database"
	httplib "dev.tandem.ws/tandem/camper/pkg/http"
	"dev.tandem.ws/tandem/camper/pkg/template"
	"fmt"
	"net/http"
	"sort"
)

type publicHandler struct{}

func newPublicHandler() *publicHandler {
	return &publicHandler{}
}

func (h *publicHandler) Handler(user *auth.User, company *auth.Company, conn *database.Conn) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		var head string
		head, r.URL.Path = httplib.ShiftPath(r.URL.Path)
		switch head {
		case "":
			page := newHomePage()
			page.MustRender(w, r, user, company)
		default:
			http.NotFound(w, r)
		}
	})
}

type homePage struct {
	*PublicPage
}

func newHomePage() *homePage {
	return &homePage{newPublicPage("home.gohtml")}
}

type PublicPage struct {
	template            string
	LocalizedAlternates []*LocalizedAlternate
}

func newPublicPage(template string) *PublicPage {
	return &PublicPage{
		template: template,
	}
}

func (p *PublicPage) MustRender(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company) {
	schema := httplib.Protocol(r)
	authority := httplib.Host(r)
	_, path := httplib.ShiftPath(r.RequestURI)
	for _, l := range company.Locales {
		p.LocalizedAlternates = append(p.LocalizedAlternates, &LocalizedAlternate{
			Lang:    l.Language.String(),
			Endonym: l.Endonym,
			HRef:    fmt.Sprintf("%s://%s/%s%s", schema, authority, l.Language, path),
		})
	}
	sort.Slice(p.LocalizedAlternates, func(i, j int) bool { return p.LocalizedAlternates[i].Lang < p.LocalizedAlternates[j].Lang })
	template.MustRenderPublic(w, r, user, company, p.template, p)
}

type LocalizedAlternate struct {
	Lang    string
	HRef    string
	Endonym string
}