link to artwork page instead on ranking calendar

assets/views/rankingCalendar.jet.html

@@ -70,7 +70,7 @@
             <div class="card h-100">
               {{ if day.DayNumber > 0 }}
                 {{ if day.ImageURL }}
-                  <a href="{{ day.RankingLink }}" class="text-decoration-none">
+                  <a href="{{ day.ArtworkLink }}" class="text-decoration-none">
                     <img src="{{ day.ImageURL }}" alt="Day {{ day.DayNumber }}" class="card-img-top img-fluid object-fit-cover h-100" />
                     <div class="card-img-overlay d-flex align-items-start rounded p-2">
                       <p class="card-text text-white fw-bold bg-dark bg-opacity-75 rounded-pill px-2 py-1 mb-0">{{ day.DayNumber }}</p>

core/rankingCalendar.go

@@ -3,6 +3,7 @@ package core
 import (
 	"fmt"
 	"net/http"
+	"regexp"
 	"strings"
 	"time"
 
@@ -16,7 +17,7 @@ import (
 type DayCalendar struct {
 	DayNumber   int    // The day of the month
 	ImageURL    string // Proxy URL to the image (optional, can be empty when no image is available)
-	RankingLink string // The link to the ranking page for this day
+	ArtworkLink string // The link to the artwork page for this day
 }
 
 // get_weekday converts a time.Weekday to an integer representation.
@@ -44,6 +45,16 @@ func get_weekday(n time.Weekday) int {
 // selector_img is a pre-compiled CSS selector for finding <img> tags in HTML.
 var selector_img = cascadia.MustCompile("img")
 
+// extractArtworkID extracts the artwork ID from the image URL
+func extractArtworkID(imageURL string) string {
+	re := regexp.MustCompile(`/(\d+)_p0_(custom|square)1200\.jpg`)
+	matches := re.FindStringSubmatch(imageURL)
+	if len(matches) > 1 {
+		return matches[1]
+	}
+	return ""
+}
+
 // GetRankingCalendar retrieves and processes the ranking calendar data from Pixiv.
 // It returns a slice of DayCalendar structs and any error encountered.
 //
@@ -92,13 +103,15 @@ func GetRankingCalendar(r *http.Request, mode string, year, month int) ([]DayCal
 
 	// Add data for each day of the month
 	for i := 0; i < thisMonth.Day(); i++ {
-		date := fmt.Sprintf("%d%02d%02d", year, month, i+1)
 		day := DayCalendar{
-			DayNumber:   i + 1,
-			RankingLink: fmt.Sprintf("/ranking?mode=%s&date=%s", mode, date),
+			DayNumber: i + 1,
 		}
 		if len(links) > i {
 			day.ImageURL = links[i]
+			artworkID := extractArtworkID(links[i])
+			if artworkID != "" {
+				day.ArtworkLink = fmt.Sprintf("/artworks/%s", artworkID)
+			}
 		}
 		calendar = append(calendar, day)
 		dayCount++