1 files changed, 126 insertions, 0 deletions
diff --git a/internal/router/handlers/api-v1-blog-search.go b/internal/router/handlers/api-v1-blog-search.go
new file mode 100644
index 0000000..a0316e2
--- /dev/null
+++ b/internal/router/handlers/api-v1-blog-search.go
@@ -0,0 +1,126 @@
+package handlers
+
+import (
+	"encoding/json"
+	"fmt"
+	"log/slog"
+	"net/url"
+	"regexp"
+	"slices"
+	"strings"
+	"time"
+
+	"github.com/SayaAndy/saya-today-web/internal/b2"
+	"github.com/SayaAndy/saya-today-web/internal/router"
+	"github.com/gofiber/fiber/v2"
+)
+
+type BlogSearchHandler struct {
+	router.BasicHandler
+	getTagsQuery *regexp.Regexp
+}
+
+func init() {
+	router.Routes = append(router.Routes, &BlogSearchHandler{getTagsQuery: regexp.MustCompile(`tags\[\]=([\w]+)`)})
+}
+
+func (r *BlogSearchHandler) Filter() (method string, path string) {
+	return "GET", "/api/v1/blog-search"
+}
+
+func (r *BlogSearchHandler) IsTemplated() bool {
+	return false
+}
+
+func (r *BlogSearchHandler) TemplatesToInject() []string {
+	return []string{"views/partials/catalogue-blog-cards.html", "views/partials/catalogue-blog-card-tags.html"}
+}
+
+func (r *BlogSearchHandler) ToCache() router.CacheSetting {
+	return router.Disabled
+}
+
+func (r *BlogSearchHandler) ToValidateLang() router.LangSetting {
+	return router.InForm
+}
+
+func (r *BlogSearchHandler) Render(c *fiber.Ctx, supplements *router.Supplements, lang string, templateMap fiber.Map) (statusCode int, err error) {
+	sort := c.Query("sort")
+	tz := c.Query("tz")
+
+	loc, err := time.LoadLocation(tz)
+	if err != nil {
+		loc = time.UTC
+		slog.Warn("unable to parse a client timezone, defaulting to UTC", slog.String("error", err.Error()), slog.String("tz", tz))
+	}
+
+	cacheKey := "blog-search." + lang + ".pages-list"
+
+	var pages []*b2.BlogPage
+	if pagesBytes, ok := supplements.PageCache.Get(cacheKey); pagesBytes != nil || ok {
+		json.Unmarshal(pagesBytes, &pages)
+	} else {
+		pages, err = supplements.B2Client.Scan(lang + "/")
+		if err != nil {
+			return fiber.StatusInternalServerError, fmt.Errorf("failed to scan pages for '%s' lang: %w", lang, err)
+		}
+		pagesBytes, _ := json.Marshal(pages)
+		supplements.PageCache.SetWithTTL(cacheKey, pagesBytes, int64(len(pagesBytes)), r.CacheDuration())
+	}
+
+	encodedQuery := c.Request().URI().QueryString()
+	decodedQuery, _ := url.QueryUnescape(string(encodedQuery))
+	matches := r.getTagsQuery.FindAllStringSubmatch(decodedQuery, -1)
+
+	tags := make([]string, 0, len(matches))
+	for _, match := range matches {
+		tags = append(tags, string(match[1]))
+	}
+
+	pageMeta := make([]fiber.Map, 0, len(pages))
+	for _, page := range pages {
+		for _, tag := range page.Metadata.Tags {
+			if len(tags) == 0 || slices.Contains(tags, tag) {
+				pageMeta = append(pageMeta, fiber.Map{
+					"Link":             page.Link,
+					"ArticleLink":      "/" + lang + "/blog/" + page.FileName,
+					"Title":            page.Metadata.Title,
+					"PublishedTime":    page.Metadata.PublishedTime.In(loc).Format("2006-01-02 15:04:05 -07:00"),
+					"ActionDate":       page.Metadata.ActionDate,
+					"ShortDescription": page.Metadata.ShortDescription,
+					"Thumbnail":        page.Metadata.Thumbnail,
+					"Tags":             page.Metadata.Tags,
+					"LikeCount":        supplements.ClientCache.GetLikeCount(page.FileName),
+					"ViewCount":        supplements.ClientCache.GetViewCount(page.FileName),
+				})
+				break
+			}
+		}
+	}
+
+	slices.SortFunc(pageMeta, func(a, b fiber.Map) int {
+		switch sort {
+		case "titleAsc":
+			return strings.Compare(a["Title"].(string), b["Title"].(string))
+		case "titleDesc":
+			return strings.Compare(b["Title"].(string), a["Title"].(string))
+		case "actionDateAsc":
+			return strings.Compare(a["ActionDate"].(string), b["ActionDate"].(string))
+		case "actionDateDesc":
+			return strings.Compare(b["ActionDate"].(string), a["ActionDate"].(string))
+		case "publicationDateAsc":
+			publishedTimeA, _ := time.Parse("2006-01-02 15:04:05 -07:00", a["PublishedTime"].(string))
+			publishedTimeB, _ := time.Parse("2006-01-02 15:04:05 -07:00", b["PublishedTime"].(string))
+			return publishedTimeA.Compare(publishedTimeB)
+		case "publicationDateDesc":
+			publishedTimeA, _ := time.Parse("2006-01-02 15:04:05 -07:00", a["PublishedTime"].(string))
+			publishedTimeB, _ := time.Parse("2006-01-02 15:04:05 -07:00", b["PublishedTime"].(string))
+			return publishedTimeB.Compare(publishedTimeA)
+		}
+		return 0
+	})
+
+	templateMap["BlogPages"] = pageMeta
+
+	return fiber.StatusOK, nil
+}