feat: SEO backend output (2/4)

api/handlers/article/articleHandler.go

@@ -16,6 +16,7 @@ import (
 	"log"
 	"net/http"
 	"net/url"
+	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -79,8 +80,10 @@ type articleResponse struct {
 
 type listItemResponse struct {
 	baseArticleResponse
-	Excerpt string `json:"excerpt"`
-	Slug    string `json:"slug"`
+	Excerpt        string `json:"excerpt"`
+	Slug           string `json:"slug"`
+	SEOStatus      string `json:"seo_status"`
+	SEOSuggestions int    `json:"seo_suggestions"`
 }
 
 func toBaseResponse(article domain.Article, format domain.BodyFormat) (baseArticleResponse, error) {
@@ -135,12 +138,12 @@ func toArticleResponse(article domain.Article, format domain.BodyFormat) (articl
 	}, nil
 }
 
-func toListItemResponse(article domain.Article, format domain.BodyFormat) (listItemResponse, error) {
+func toListItemResponse(article domain.Article, summary domain.SEOSummary, format domain.BodyFormat) (listItemResponse, error) {
 	base, err := toBaseResponse(article, format)
 	if err != nil {
 		return listItemResponse{}, err
 	}
-	return listItemResponse{baseArticleResponse: base, Excerpt: article.Excerpt, Slug: article.Slug}, nil
+	return listItemResponse{baseArticleResponse: base, Excerpt: article.Excerpt, Slug: article.Slug, SEOStatus: summary.Status, SEOSuggestions: summary.Suggestions}, nil
 }
 
 func encodeArticle(article domain.Article, format domain.BodyFormat) ([]byte, error) {
@@ -392,6 +395,22 @@ func hasDuplicates(ids []uint32) bool {
 	return false
 }
 
+func countKnownFields(fields map[string]json.RawMessage, nonNullable []string) (int, bool) {
+	known := 0
+	for name, value := range fields {
+		switch {
+		case slices.Contains(nonNullable, name):
+			if string(value) == "null" {
+				return 0, false
+			}
+			known++
+		case slices.Contains(nullableArticleFields, name):
+			known++
+		}
+	}
+	return known, true
+}
+
 func readUpdateArticleBody(r *http.Request) (UpdateArticleBody, bool) {
 	raw, err := io.ReadAll(r.Body)
 	if err != nil {
@@ -401,23 +420,8 @@ func readUpdateArticleBody(r *http.Request) (UpdateArticleBody, bool) {
 	if err := json.Unmarshal(raw, &fields); err != nil {
 		return UpdateArticleBody{}, false
 	}
-	known := 0
-	for _, name := range nonNullableArticleFields {
-		value, present := fields[name]
-		if !present {
-			continue
-		}
-		if string(value) == "null" {
-			return UpdateArticleBody{}, false
-		}
-		known++
-	}
-	for _, name := range nullableArticleFields {
-		if _, present := fields[name]; present {
-			known++
-		}
-	}
-	if known == 0 {
+	known, ok := countKnownFields(fields, nonNullableArticleFields)
+	if !ok || known == 0 {
 		return UpdateArticleBody{}, false
 	}
 	var request UpdateArticleBody
@@ -488,12 +492,16 @@ func (h *Handler) UnpublishArticle(w http.ResponseWriter, r *http.Request) {
 }
 
 func (h *Handler) callerIsVerified(r *http.Request) bool {
+	return isVerifiedCaller(r, h.GetUserUseCase)
+}
+
+func isVerifiedCaller(r *http.Request, getUser *useCases.GetUserUseCase) bool {
 	userId, ok := claims.UserId(r)
 	if !ok {
 		return false
 	}
 
-	currentUser, err := h.GetUserUseCase.GetUser(userId)
+	currentUser, err := getUser.GetUser(userId)
 	if err != nil {
 		return false
 	}
@@ -512,6 +520,7 @@ type listQuery struct {
 	Q      string  `validate:"max=200"`
 	Status string  `validate:"omitempty,oneof=online draft"`
 	Site   *string `validate:"omitempty,min=1"`
+	SEO    string  `validate:"omitempty,oneof=ready suggestions hidden"`
 	Sort   string  `validate:"oneof=title:asc title:desc status:asc status:desc created_at:asc created_at:desc updated_at:asc updated_at:desc"`
 }
 
@@ -562,7 +571,11 @@ func readListQuery(values url.Values) (listQuery, error) {
 		}
 		siteKey = &key
 	}
-	return listQuery{Page: page, Size: size, Q: values.Get("q"), Status: status, Sort: sortValue, Site: siteKey}, nil
+	seoStatus := values.Get("seo")
+	if values.Has("seo") && seoStatus == "" {
+		return listQuery{}, errors.New("empty seo")
+	}
+	return listQuery{Page: page, Size: size, Q: values.Get("q"), Status: status, Sort: sortValue, Site: siteKey, SEO: seoStatus}, nil
 }
 
 func (h *Handler) ListArticles(w http.ResponseWriter, r *http.Request) {
@@ -586,6 +599,7 @@ func (h *Handler) ListArticles(w http.ResponseWriter, r *http.Request) {
 		Status:   query.Status,
 		Sort:     parseSort(query.Sort),
 		SiteKey:  query.Site,
+		SEO:      query.SEO,
 	})
 	if err != nil {
 		http.Error(w, "Failed to retrieve articles", http.StatusInternalServerError)
@@ -594,7 +608,7 @@ func (h *Handler) ListArticles(w http.ResponseWriter, r *http.Request) {
 
 	responses := make([]listItemResponse, 0, len(page.Items))
 	for _, article := range page.Items {
-		response, err := toListItemResponse(article, format)
+		response, err := toListItemResponse(article, page.SEO[article.ID], format)
 		if err != nil {
 			http.Error(w, "Failed to encode response", http.StatusInternalServerError)
 			return

api/handlers/article/seoHandler.go

@@ -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)
+	}
+}

api/handlers/site/sitemapHandler.go

@@ -0,0 +1,87 @@
+package site
+
+import (
+	"RenewCMS/api/pkg/apperr"
+	validator "RenewCMS/api/pkg/validator"
+	"RenewCMS/internal/infrastructure/useCases"
+	"encoding/json"
+	"log"
+	"net/http"
+	"net/url"
+	"strconv"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+)
+
+const (
+	defaultSitemapPage = 1
+	defaultSitemapSize = 100
+	totalCountHeader   = "X-Total-Count"
+)
+
+type SitemapHandler struct {
+	ListUseCase *useCases.ListSitemapUseCase
+}
+
+func NewSitemapHandler(list *useCases.ListSitemapUseCase) *SitemapHandler {
+	return &SitemapHandler{ListUseCase: list}
+}
+
+type sitemapQuery struct {
+	Page int `validate:"gte=1"`
+	Size int `validate:"oneof=25 50 100 500"`
+}
+
+type sitemapItem struct {
+	URL        string `json:"url"`
+	ModifiedAt string `json:"modified_at"`
+	Noindex    bool   `json:"noindex"`
+}
+
+func sitemapIntParam(values url.Values, name string, fallback int) (int, error) {
+	if !values.Has(name) {
+		return fallback, nil
+	}
+	return strconv.Atoi(values.Get(name))
+}
+
+func readSitemapQuery(values url.Values) (sitemapQuery, error) {
+	page, err := sitemapIntParam(values, "page", defaultSitemapPage)
+	if err != nil {
+		return sitemapQuery{}, err
+	}
+	size, err := sitemapIntParam(values, "size", defaultSitemapSize)
+	if err != nil {
+		return sitemapQuery{}, err
+	}
+	return sitemapQuery{Page: page, Size: size}, nil
+}
+
+func (h *SitemapHandler) Sitemap(w http.ResponseWriter, r *http.Request) {
+	query, err := readSitemapQuery(r.URL.Query())
+	if err != nil || validator.Validate.Struct(query) != nil {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+
+	page, err := h.ListUseCase.List(chi.URLParam(r, "key"), query.Page, query.Size)
+	if err != nil {
+		writeSiteError(w, err)
+		return
+	}
+
+	items := make([]sitemapItem, 0, len(page.Entries))
+	for _, entry := range page.Entries {
+		items = append(items, sitemapItem{URL: entry.URL, ModifiedAt: entry.ModifiedAt.UTC().Format(time.RFC3339), Noindex: entry.Noindex})
+	}
+	body, err := json.Marshal(items)
+	if err != nil {
+		http.Error(w, "Failed to encode response", http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set(totalCountHeader, strconv.Itoa(page.Total))
+	if _, err := w.Write(body); err != nil {
+		log.Printf("Failed to write response: %v", err)
+	}
+}