feat: SEO backend output (2/4)

2026-10-15 21:48:55 +02:00
1 parent 0eb46b0d74
commit eb9876fde3
@@ -0,0 +1,127 @@
+package article
+
+import (
+	"RenewCMS/api/pkg/apperr"
+	validator "RenewCMS/api/pkg/validator"
+	"RenewCMS/internal/infrastructure/useCases"
+	"bytes"
+	"encoding/json"
+	"io"
+	"log"
+	"net/http"
+)
+
+type SEOHandler struct {
+	ResolveUseCase *useCases.ResolveArticleSEOUseCase
+	CheckUseCase   *useCases.CheckArticleSEOUseCase
+	GetUserUseCase *useCases.GetUserUseCase
+}
+
+func NewSEOHandler(resolve *useCases.ResolveArticleSEOUseCase, check *useCases.CheckArticleSEOUseCase, getUser *useCases.GetUserUseCase) *SEOHandler {
+	return &SEOHandler{ResolveUseCase: resolve, CheckUseCase: check, GetUserUseCase: getUser}
+}
+
+type CheckArticleSEOBody struct {
+	Body              *string         `json:"body"`
+	Slug              *string         `json:"slug" validate:"omitempty,articleslug"`
+	Excerpt           *string         `json:"excerpt" validate:"omitempty,max=300"`
+	SEOTitle          *string         `json:"seo_title" validate:"omitempty,max=120"`
+	SEODescription    *string         `json:"seo_description" validate:"omitempty,max=320"`
+	CoverImageID      optionalImageID `json:"cover_image_id"`
+	CoverImageAlt     *string         `json:"cover_image_alt" validate:"omitempty,max=200"`
+	SocialTitle       *string         `json:"social_title" validate:"omitempty,max=120"`
+	SocialDescription *string         `json:"social_description" validate:"omitempty,max=320"`
+	SocialImageID     optionalImageID `json:"social_image_id"`
+	CanonicalURL      *string         `json:"canonical_url" validate:"omitempty,max=2048"`
+	Noindex           *bool           `json:"noindex"`
+	SEODismissed      *[]string       `json:"seo_dismissed" validate:"omitempty,dive,oneof=title_long title_empty desc_short desc_long cover_alt cover_none slug_long no_au no_h body_alt short"`
+}
+
+var checkNonNullableFields = []string{"body", "slug", "excerpt", "seo_title", "seo_description", "cover_image_alt", "social_title", "social_description", "canonical_url", "noindex", "seo_dismissed"}
+
+func readCheckBody(r *http.Request) (CheckArticleSEOBody, bool) {
+	raw, err := io.ReadAll(r.Body)
+	if err != nil {
+		return CheckArticleSEOBody{}, false
+	}
+	var fields map[string]json.RawMessage
+	if err := json.Unmarshal(raw, &fields); err != nil || fields == nil {
+		return CheckArticleSEOBody{}, false
+	}
+	known, ok := countKnownFields(fields, checkNonNullableFields)
+	if !ok || known != len(fields) {
+		return CheckArticleSEOBody{}, false
+	}
+	var request CheckArticleSEOBody
+	decoder := json.NewDecoder(bytes.NewReader(raw))
+	decoder.DisallowUnknownFields()
+	if err := decoder.Decode(&request); err != nil {
+		return CheckArticleSEOBody{}, false
+	}
+	return request, true
+}
+
+func (h *SEOHandler) Resolve(w http.ResponseWriter, r *http.Request) {
+	id, err := parseArticleId(r)
+	if err != nil {
+		http.Error(w, apperr.IdUint32ErrorMessage, http.StatusBadRequest)
+		return
+	}
+
+	resolved, err := h.ResolveUseCase.Resolve(id, isVerifiedCaller(r, h.GetUserUseCase))
+	if err != nil {
+		writeArticleErrorResponse(w, err)
+		return
+	}
+	writeSEOJson(w, resolved)
+}
+
+func (h *SEOHandler) Check(w http.ResponseWriter, r *http.Request) {
+	id, err := parseArticleId(r)
+	if err != nil {
+		http.Error(w, apperr.IdUint32ErrorMessage, http.StatusBadRequest)
+		return
+	}
+
+	request, ok := readCheckBody(r)
+	if !ok {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+	if err := validator.Validate.Struct(request); err != nil {
+		writeValidationError(w, err)
+		return
+	}
+
+	checked, err := h.CheckUseCase.Check(id, useCases.CheckArticleSEOCommand{
+		Body:              request.Body,
+		Slug:              request.Slug,
+		Excerpt:           request.Excerpt,
+		SEOTitle:          request.SEOTitle,
+		SEODescription:    request.SEODescription,
+		CoverImageID:      request.CoverImageID.toNullable(),
+		CoverImageAlt:     request.CoverImageAlt,
+		SocialTitle:       request.SocialTitle,
+		SocialDescription: request.SocialDescription,
+		SocialImageID:     request.SocialImageID.toNullable(),
+		CanonicalURL:      request.CanonicalURL,
+		Noindex:           request.Noindex,
+		SEODismissed:      request.SEODismissed,
+	})
+	if err != nil {
+		writeArticleErrorResponse(w, err)
+		return
+	}
+	writeSEOJson(w, checked)
+}
+
+func writeSEOJson(w http.ResponseWriter, payload any) {
+	encoded, err := json.Marshal(payload)
+	if err != nil {
+		http.Error(w, "Failed to encode response", http.StatusInternalServerError)
+		return
+	}
+	if _, err := w.Write(encoded); err != nil {
+		log.Printf("Failed to write response: %v", err)
+	}
+}