357 lines
10 KiB
Go
357 lines
10 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 carousel
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import (
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"context"
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"fmt"
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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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type AdminHandler struct {
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IndexURL string
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SlidesURL string
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name string
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indexHandler IndexHandler
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}
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type IndexHandler func(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company, conn *database.Conn)
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func NewAdminHandler(name string, indexHandler IndexHandler) *AdminHandler {
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return &AdminHandler{
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IndexURL: "/admin/" + name,
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SlidesURL: "/admin/" + name + "/slides",
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name: name,
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indexHandler: indexHandler,
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}
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}
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func (h *AdminHandler) Handler(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, h.name, h.IndexURL, h.SlidesURL)
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default:
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httplib.MethodNotAllowed(w, r, http.MethodPost)
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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(h.name, h.IndexURL, h.SlidesURL, company)
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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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case "order":
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switch r.Method {
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case http.MethodPost:
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h.orderSlides(w, r, user, company, conn)
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default:
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httplib.MethodNotAllowed(w, r, http.MethodPost)
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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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return
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}
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f := newSlideForm(h.name, h.IndexURL, h.SlidesURL, company)
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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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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.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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h.deleteSlide(w, r, user, conn, id)
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default:
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httplib.MethodNotAllowed(w, r, http.MethodGet, http.MethodPut, http.MethodDelete)
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}
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default:
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http.NotFound(w, r)
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}
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}
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})
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}
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func (h *AdminHandler) orderSlides(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company, conn *database.Conn) {
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if err := r.ParseForm(); 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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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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input := r.PostForm["media_id"]
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if len(input) > 0 {
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var ids []int
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for _, s := range input {
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if id, err := strconv.Atoi(s); err == nil {
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ids = append(ids, id)
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} else {
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http.Error(w, err.Error(), http.StatusUnprocessableEntity)
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return
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}
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}
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if _, err := conn.Exec(r.Context(), fmt.Sprintf("select order_%[1]s_carousel($1)", h.name), ids); err != nil {
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panic(err)
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}
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}
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h.indexHandler(w, r, user, company, conn)
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}
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type Slide struct {
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Media string
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Caption string
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}
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func MustCollectSlides(ctx context.Context, company *auth.Company, conn *database.Conn, loc *locale.Locale, carouselName string) []*Slide {
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rows, err := conn.Query(ctx, fmt.Sprintf(`
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select coalesce(i18n.caption, slide.caption) as l10_caption
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, media.path
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from %[1]s_carousel as slide
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join media using (media_id)
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left join %[1]s_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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order by slide.position, l10_caption
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`, carouselName), 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 []*Slide
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for rows.Next() {
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slide := &Slide{}
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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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Slide
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ID int
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}
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func CollectSlideEntries(ctx context.Context, company *auth.Company, conn *database.Conn, carouselName string) ([]*SlideEntry, error) {
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rows, err := conn.Query(ctx, fmt.Sprintf(`
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select media_id
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, media.path
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, caption
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from %[1]s_carousel as carousel
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join media using (media_id)
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where media.company_id = $1
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order by position, caption
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`, carouselName), 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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if err = rows.Scan(&slide.ID, &slide.Media, &slide.Caption); err != nil {
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return nil, err
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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, carouselName string, indexURL, baseURL string) {
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f := newSlideForm(carouselName, indexURL, baseURL, company)
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f.process(w, r, user, company, conn, func(ctx context.Context, tx *database.Tx) error {
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var err error
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if f.ID, err = tx.GetInt(ctx, fmt.Sprintf("select add_%s_carousel_slide($1, $2)", f.CarouselName), f.Media, f.Caption[f.DefaultLang]); err != nil {
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return err
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}
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return translateSlide(ctx, tx, company, f)
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})
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}
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func translateSlide(ctx context.Context, tx *database.Tx, company *auth.Company, f *slideForm) error {
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for lang := range company.Locales {
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l := lang.String()
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if l == f.DefaultLang {
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continue
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}
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if _, err := tx.Exec(ctx, fmt.Sprintf("select translate_%s_carousel_slide($1, $2, $3)", f.CarouselName), f.ID, l, f.Caption[l]); err != nil {
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return err
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}
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}
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return nil
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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, conn, func(ctx context.Context, tx *database.Tx) error {
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if _, err := tx.Exec(ctx, fmt.Sprintf("select add_%s_carousel_slide($1, $2)", f.CarouselName), f.Media, f.Caption[f.DefaultLang]); err != nil {
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return err
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}
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if f.ID != f.Media.Int() {
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if _, err := tx.Exec(ctx, fmt.Sprintf("update %[1]s_carousel set position = (select position from %[1]s_carousel where media_id = $2) where media_id = $1", f.CarouselName), f.Media, f.ID); err != nil {
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return err
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}
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if _, err := tx.Exec(ctx, fmt.Sprintf("update %s_carousel_i18n set media_id = $1 where media_id = $2", f.CarouselName), f.Media, f.ID); err != nil {
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return err
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}
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if _, err := tx.Exec(ctx, fmt.Sprintf("select remove_%s_carousel_slide($1)", f.CarouselName), f.ID); err != nil {
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return err
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}
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f.ID = f.Media.Int() // for translateSlide
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}
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return translateSlide(ctx, tx, company, f)
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})
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}
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func (h *AdminHandler) 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(), fmt.Sprintf("select remove_%s_carousel_slide($1)", h.name), id)
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httplib.Redirect(w, r, h.IndexURL, http.StatusSeeOther)
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}
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type slideForm struct {
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DefaultLang string
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CarouselName string
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IndexURL string
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SlidesURL string
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ID int
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Media *form.Media
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Caption form.I18nInput
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}
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func newSlideForm(carouselName string, indexURL string, baseURL string, company *auth.Company) *slideForm {
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return &slideForm{
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DefaultLang: company.DefaultLanguage.String(),
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CarouselName: carouselName,
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IndexURL: indexURL,
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SlidesURL: baseURL,
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Media: &form.Media{
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Input: &form.Input{
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Name: "media",
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},
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Label: locale.PgettextNoop("Slide image", "input"),
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Prompt: locale.PgettextNoop("Set slide image", "action"),
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},
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Caption: form.NewI18nInput(company.Locales, "caption"),
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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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var caption database.RecordArray
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row := conn.QueryRow(ctx, fmt.Sprintf(`
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select slide.caption
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, media_id::text
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, array_agg((lang_tag, i18n.caption))
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from %[1]s_carousel as slide
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left join %[1]s_carousel_i18n as i18n using (media_id)
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where media_id = $1
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group by slide.caption
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, media_id
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`, f.CarouselName), pgx.QueryResultFormats{pgx.BinaryFormatCode}, id)
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if err := row.Scan(&f.Caption[f.DefaultLang].Val, &f.Media.Val, &caption); err != nil {
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return err
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}
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if err := f.Caption.FillArray(caption); 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) process(w http.ResponseWriter, r *http.Request, user *auth.User, company *auth.Company, conn *database.Conn, act func(ctx context.Context, tx *database.Tx) error) {
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if err := f.Parse(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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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 ok, err := f.Valid(r.Context(), conn, user.Locale); err != nil {
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panic(err)
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} else if !ok {
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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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tx := conn.MustBegin(r.Context())
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if err := act(r.Context(), tx); err == nil {
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tx.MustCommit(r.Context())
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} else {
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if rErr := tx.Rollback(r.Context()); rErr != nil {
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err = rErr
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}
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panic(err)
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}
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httplib.Redirect(w, r, f.IndexURL, http.StatusSeeOther)
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}
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func (f *slideForm) Parse(r *http.Request) error {
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if err := r.ParseForm(); err != nil {
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return err
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}
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f.Caption.FillValue(r)
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f.Media.FillValue(r)
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return nil
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}
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func (f *slideForm) Valid(ctx context.Context, conn *database.Conn, l *locale.Locale) (bool, error) {
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v := form.NewValidator(l)
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if v.CheckRequired(f.Media.Input, l.GettextNoop("Slide image can not be empty.")) {
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if _, err := v.CheckImageMedia(ctx, conn, f.Media.Input, l.GettextNoop("Slide image must be an image media type.")); err != nil {
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return false, err
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}
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}
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return v.AllOK, nil
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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, "carousel/form.gohtml", f)
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}
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