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

package app

import (
	"context"
	"net/http"

	"dev.tandem.ws/tandem/camper/pkg/auth"
	"dev.tandem.ws/tandem/camper/pkg/campsite"
	"dev.tandem.ws/tandem/camper/pkg/database"
	httplib "dev.tandem.ws/tandem/camper/pkg/http"
	"dev.tandem.ws/tandem/camper/pkg/locale"
	"dev.tandem.ws/tandem/camper/pkg/template"
)

type publicHandler struct {
	campsite *campsite.PublicHandler
}

func newPublicHandler() *publicHandler {
	return &publicHandler{
		campsite: campsite.NewPublicHandler(),
	}
}

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 "":
			home := newHomePage()
			home.MustRender(w, r, user, company, conn)
		case "campsites":
			h.campsite.Handler(user, company, conn).ServeHTTP(w, r)
		default:
			http.NotFound(w, r)
		}
	})
}

type homePage struct {
	*template.PublicPage
	CampsiteTypes []*campsiteType
}

func newHomePage() *homePage {
	return &homePage{template.NewPublicPage(), nil}
}

func (p *homePage) MustRender(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company, conn *database.Conn) {
	p.Setup(r, user, company, conn)
	p.CampsiteTypes = mustCollectCampsiteTypes(r.Context(), company, conn, user.Locale)
	template.MustRenderPublic(w, r, user, company, "home.gohtml", p)
}

type campsiteType struct {
	Label string
	HRef  string
	Media string
}

func mustCollectCampsiteTypes(ctx context.Context, company *auth.Company, conn *database.Conn, loc *locale.Locale) []*campsiteType {
	rows, err := conn.Query(ctx, `
		select coalesce(i18n.name, campsite_type.name) as l10_name
		     , '/campsites/types/' || slug
		     , '/media/' || encode(hash, 'hex') || '/' || original_filename
		from campsite_type
		    left join campsite_type_i18n as i18n on campsite_type.campsite_type_id = i18n.campsite_type_id and lang_tag = $1
		    join media using (media_id)
		where campsite_type.company_id = $2
		  and campsite_type.active
	`, loc.Language, company.ID)
	if err != nil {
		panic(err)
	}
	defer rows.Close()

	localePath := "/" + loc.Language.String()
	var items []*campsiteType
	for rows.Next() {
		item := &campsiteType{}
		err = rows.Scan(&item.Label, &item.HRef, &item.Media)
		if err != nil {
			panic(err)
		}
		item.HRef = localePath + item.HRef
		items = append(items, item)
	}
	if rows.Err() != nil {
		panic(rows.Err())
	}

	return items
}