312 lines
8.0 KiB
Go
312 lines
8.0 KiB
Go
/*
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* SPDX-FileCopyrightText: 2023 jordi fita mas <jfita@peritasoft.com>
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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package home
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import (
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"context"
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"io"
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"net/http"
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"strconv"
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"github.com/jackc/pgx/v4"
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"dev.tandem.ws/tandem/camper/pkg/auth"
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"dev.tandem.ws/tandem/camper/pkg/database"
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"dev.tandem.ws/tandem/camper/pkg/form"
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httplib "dev.tandem.ws/tandem/camper/pkg/http"
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"dev.tandem.ws/tandem/camper/pkg/locale"
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"dev.tandem.ws/tandem/camper/pkg/template"
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)
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func (h *AdminHandler) carouselHandler(user *auth.User, company *auth.Company, conn *database.Conn) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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var head string
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head, r.URL.Path = httplib.ShiftPath(r.URL.Path)
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switch head {
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case "":
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switch r.Method {
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case http.MethodPost:
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addSlide(w, r, user, company, conn)
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default:
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httplib.MethodNotAllowed(w, r, http.MethodGet)
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}
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case "new":
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switch r.Method {
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case http.MethodGet:
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f := newSlideForm()
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f.MustRender(w, r, user, company)
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default:
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httplib.MethodNotAllowed(w, r, http.MethodGet)
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}
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default:
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id, err := strconv.Atoi(head)
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if err != nil {
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http.NotFound(w, r)
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}
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f := newSlideForm()
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if err := f.FillFromDatabase(r.Context(), conn, id); err != nil {
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if database.ErrorIsNotFound(err) {
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http.NotFound(w, r)
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return
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}
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panic(err)
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}
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var langTag string
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langTag, r.URL.Path = httplib.ShiftPath(r.URL.Path)
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switch langTag {
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case "":
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switch r.Method {
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case http.MethodGet:
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f.MustRender(w, r, user, company)
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case http.MethodPut:
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editSlide(w, r, user, company, conn, f)
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case http.MethodDelete:
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deleteSlide(w, r, user, conn, id)
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default:
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httplib.MethodNotAllowed(w, r, http.MethodGet, http.MethodPut)
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}
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default:
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loc, ok := h.locales.Get(langTag)
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if !ok {
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http.NotFound(w, r)
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return
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}
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l10n := newSlideL10nForm(f, loc)
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if err := l10n.FillFromDatabase(r.Context(), conn); err != nil {
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panic(err)
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}
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switch r.Method {
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case http.MethodGet:
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l10n.MustRender(w, r, user, company)
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case http.MethodPut:
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editSlideL10n(w, r, user, company, conn, l10n)
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default:
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httplib.MethodNotAllowed(w, r, http.MethodGet, http.MethodPut)
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}
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}
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}
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})
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}
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type carouselSlide struct {
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Media string
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Caption string
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}
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func mustCollectCarouselSlides(ctx context.Context, company *auth.Company, conn *database.Conn, loc *locale.Locale) []*carouselSlide {
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rows, err := conn.Query(ctx, `
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select coalesce(i18n.caption, slide.caption) as l10_caption
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, media.path
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from home_carousel as slide
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join media using (media_id)
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left join home_carousel_i18n as i18n on i18n.media_id = slide.media_id and lang_tag = $1
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where media.company_id = $2
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`, loc.Language, company.ID)
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if err != nil {
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panic(err)
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}
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defer rows.Close()
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var carousel []*carouselSlide
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for rows.Next() {
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slide := &carouselSlide{}
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err = rows.Scan(&slide.Caption, &slide.Media)
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if err != nil {
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panic(err)
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}
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carousel = append(carousel, slide)
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}
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if rows.Err() != nil {
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panic(rows.Err())
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}
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return carousel
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}
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type slideEntry struct {
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carouselSlide
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ID int
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Translations []*translation
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}
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type translation struct {
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Language string
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Endonym string
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Missing bool
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}
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func collectSlideEntries(ctx context.Context, company *auth.Company, conn *database.Conn) ([]*slideEntry, error) {
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rows, err := conn.Query(ctx, `
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select media_id
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, media.path
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, caption
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, array_agg((lang_tag, endonym, not exists (select 1 from home_carousel_i18n as i18n where i18n.media_id = home_carousel.media_id and i18n.lang_tag = language.lang_tag)) order by endonym)
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from home_carousel
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join media using (media_id)
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join company using (company_id)
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, language
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where lang_tag <> default_lang_tag
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and language.selectable
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and media.company_id = $1
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group by media_id
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, media.path
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, caption
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order by caption
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`, pgx.QueryResultFormats{pgx.BinaryFormatCode}, company.ID)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var slides []*slideEntry
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for rows.Next() {
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slide := &slideEntry{}
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var translations database.RecordArray
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if err = rows.Scan(&slide.ID, &slide.Media, &slide.Caption, &translations); err != nil {
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return nil, err
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}
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for _, el := range translations.Elements {
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slide.Translations = append(slide.Translations, &translation{
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el.Fields[0].Get().(string),
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el.Fields[1].Get().(string),
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el.Fields[2].Get().(bool),
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})
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}
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slides = append(slides, slide)
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}
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return slides, nil
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}
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func addSlide(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company, conn *database.Conn) {
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f := newSlideForm()
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editSlide(w, r, user, company, conn, f)
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}
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func editSlide(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company, conn *database.Conn, f *slideForm) {
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f.process(w, r, user, company, false, func(ctx context.Context) {
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bytes := f.MustReadAllMedia()
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if bytes == nil {
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conn.MustExec(ctx, "select add_home_carousel_slide($1, $2)", f.ID, f.Caption)
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} else {
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tx := conn.MustBegin(ctx)
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defer tx.Rollback(ctx)
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f.ID = tx.MustGetInt(ctx, "select add_media($1, $2, $3, $4)", company.ID, f.Media.Filename(), f.Media.ContentType, bytes)
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tx.MustExec(ctx, "select add_home_carousel_slide($1, $2)", f.ID, f.Caption)
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tx.MustCommit(ctx)
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}
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})
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}
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func deleteSlide(w http.ResponseWriter, r *http.Request, user *auth.User, conn *database.Conn, id int) {
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if err := user.VerifyCSRFToken(r); err != nil {
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http.Error(w, err.Error(), http.StatusForbidden)
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return
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}
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conn.MustExec(r.Context(), "select remove_home_carousel_slide($1)", id)
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httplib.Redirect(w, r, "/admin/home", http.StatusSeeOther)
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}
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type slideForm struct {
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ID int
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Media *form.File
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Caption *form.Input
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}
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func newSlideForm() *slideForm {
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return &slideForm{
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Media: &form.File{
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Name: "media",
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MaxSize: 1 << 20,
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},
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Caption: &form.Input{
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Name: "caption",
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},
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}
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}
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func (f *slideForm) FillFromDatabase(ctx context.Context, conn *database.Conn, id int) error {
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f.ID = id
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row := conn.QueryRow(ctx, `
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select caption
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, media.path
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from home_carousel
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join media using (media_id)
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where media_id = $1
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`, id)
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return row.Scan(&f.Caption.Val, &f.Media.Val)
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}
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func (f *slideForm) process(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company, mediaRequired bool, act func(ctx context.Context)) {
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if err := f.Parse(w, r); err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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defer f.Close()
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if err := user.VerifyCSRFToken(r); err != nil {
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http.Error(w, err.Error(), http.StatusForbidden)
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return
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}
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if !f.Valid(user.Locale, mediaRequired) {
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if !httplib.IsHTMxRequest(r) {
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w.WriteHeader(http.StatusUnprocessableEntity)
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}
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f.MustRender(w, r, user, company)
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return
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}
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act(r.Context())
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httplib.Redirect(w, r, "/admin/home", http.StatusSeeOther)
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}
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func (f *slideForm) Parse(w http.ResponseWriter, r *http.Request) error {
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maxSize := f.Media.MaxSize + 1024
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r.Body = http.MaxBytesReader(w, r.Body, maxSize)
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if err := r.ParseMultipartForm(maxSize); err != nil {
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return err
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}
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f.Caption.FillValue(r)
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if err := f.Media.FillValue(r); err != nil {
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return err
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}
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return nil
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}
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func (f *slideForm) Close() error {
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return f.Media.Close()
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}
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func (f *slideForm) Valid(l *locale.Locale, mediaRequired bool) bool {
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v := form.NewValidator(l)
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if f.HasMediaFile() {
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v.CheckImageFile(f.Media, l.GettextNoop("File must be a valid PNG or JPEG image."))
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} else {
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v.Check(f.Media, !mediaRequired, l.GettextNoop("Slide image can not be empty."))
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}
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return v.AllOK
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}
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func (f *slideForm) MustRender(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company) {
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template.MustRenderAdmin(w, r, user, company, "home/carousel/form.gohtml", f)
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}
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func (f *slideForm) HasMediaFile() bool {
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return f.Media.HasData()
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}
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func (f *slideForm) MustReadAllMedia() []byte {
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if !f.HasMediaFile() {
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return nil
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}
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bytes, err := io.ReadAll(f.Media)
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if err != nil {
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panic(err)
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}
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return bytes
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}
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