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package handlers
import (
"fmt"
"log/slog"
"net/url"
"regexp"
"slices"
"strings"
"time"
"github.com/SayaAndy/saya-today-web/internal/blog"
"github.com/SayaAndy/saya-today-web/internal/router"
"github.com/gofiber/fiber/v2"
)
func init() {
router.Routes = append(router.Routes, &CatalogueHandler{getTagsQuery: regexp.MustCompile(`tags\[\]=([\w]+)`)})
}
type CatalogueHandler struct {
router.BasicHandler
getTagsQuery *regexp.Regexp
}
func (r *CatalogueHandler) Filter() (method string, path string) {
return "GET", "/:lang/blog"
}
func (r *CatalogueHandler) IsTemplated() bool {
return true
}
func (r *CatalogueHandler) TemplatesToInject() []string {
return []string{"views/pages/blog-catalogue.html"}
}
func (r *CatalogueHandler) ToCache() router.CacheSetting {
return router.ByUrlAndQuery
}
func (r *CatalogueHandler) CacheDuration() time.Duration {
return 5 * time.Minute
}
func (r *CatalogueHandler) ToValidateLang() router.LangSetting {
return router.InPath
}
func (r *CatalogueHandler) SitemapInfo(supplements *router.Supplements) []router.SitemapInfo {
sitemapInfo := []router.SitemapInfo{}
for _, lang := range supplements.AvailableLanguages {
sitemapInfo = append(sitemapInfo, router.SitemapInfo{Loc: "/" + lang.Name + "/blog", Priority: 0.3})
}
return sitemapInfo
}
func (r *CatalogueHandler) AddMeta(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (meta []router.MetaField, err error) {
return []router.MetaField{
{Property: "og:title", Content: supplements.Localization[lang].BlogSearch.Header},
{Property: "og:description", Content: supplements.Localization[lang].BlogSearch.Description},
{Property: "og:url", Content: fmt.Sprintf("%s/%s/blog", templateMap["CanonicalEndpoint"], lang)},
{Property: "og:type", Content: "website"},
}, nil
}
func (r *CatalogueHandler) RenderBody(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
querySort := c.Query("sort", "publicationDateDesc")
previousBlogPage := c.Query("codename")
encodedQuery := c.Request().URI().QueryString()
decodedQuery, _ := url.QueryUnescape(string(encodedQuery))
matches := r.getTagsQuery.FindAllStringSubmatch(decodedQuery, -1)
queryTags := make([]string, 0, len(matches))
for _, match := range matches {
queryTags = append(queryTags, string(match[1]))
}
tagsArray, err := getTags(supplements.BlogClient, lang)
if err != nil {
return fiber.StatusInternalServerError, fmt.Errorf("failed to get the available tags")
}
templateMap["Tags"] = tagsArray
templateMap["QuerySort"] = querySort
templateMap["QueryTags"] = strings.Join(queryTags, ",")
templateMap["Title"] = supplements.Localization[lang].BlogSearch.Header
templateMap["PreviousBlogPage"] = previousBlogPage
return fiber.StatusOK, nil
}
func (r *CatalogueHandler) RenderHeader(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
templateMap["Title"] = supplements.Localization[lang].BlogSearch.Header
return fiber.StatusOK, nil
}
type Tag struct {
Name string `json:"Name" yaml:"name"`
Count int `json:"Count" yaml:"count"`
}
func getTags(blogClient blog.Client, lang string) (tags []Tag, err error) {
pages, err := blogClient.Scan(lang + "/")
if err != nil {
slog.Warn("failed to scan pages via b2", slog.String("error", err.Error()))
return nil, fmt.Errorf("failed to scan pages via b2: %w", err)
}
tagsMap := make(map[string]int)
for _, page := range pages {
for _, tag := range page.Metadata.Tags {
tagsMap[tag]++
}
}
slog.Debug("enlist pages for catalogue", slog.Int("tag_count", len(tagsMap)), slog.Int("page_count", len(pages)), slog.String("lang", lang))
tagsArray := make([]Tag, 0, len(tagsMap))
for tag, count := range tagsMap {
tagsArray = append(tagsArray, Tag{tag, count})
}
slices.SortFunc(tagsArray, func(a Tag, b Tag) int {
return strings.Compare(a.Name, b.Name)
})
return tagsArray, nil
}
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