feat(shared): add centralized helper functions for templates

web/shared/format.go

@@ -0,0 +1,43 @@
+package shared
+
+import (
+	"fmt"
+	"net/url"
+)
+
+// BuildStreamURL constructs a stream URL from mode and token
+func BuildStreamURL(mode string, token string) string {
+	if token == "" {
+		return ""
+	}
+	return fmt.Sprintf("/watch/proxy/stream?mode=%s&token=%s", url.QueryEscape(mode), url.QueryEscape(token))
+}
+
+// FormatProgressTime formats seconds into MM:SS format
+func FormatProgressTime(seconds float64) string {
+	total := int(seconds)
+	if total < 0 {
+		total = 0
+	}
+	minutes := total / 60
+	remainingSeconds := total % 60
+	return fmt.Sprintf("%02d:%02d", minutes, remainingSeconds)
+}
+
+// FormatEstablishedDate extracts YYYY-MM-DD from ISO date string
+func FormatEstablishedDate(date string) string {
+	if len(date) >= 10 {
+		return date[:10]
+	}
+	return date
+}
+
+// WatchlistURL builds the watchlist URL with query parameters
+func WatchlistURL(view string, status string, sortBy string, sortOrder string) string {
+	return fmt.Sprintf("/watchlist?view=%s&status=%s&sort=%s&order=%s", view, status, sortBy, sortOrder)
+}
+
+// AnimeURL builds the anime detail URL
+func AnimeURL(animeID int) string {
+	return fmt.Sprintf("/anime/%d", animeID)
+}

web/shared/studio.go

@@ -0,0 +1,13 @@
+package shared
+
+import "mal/integrations/jikan"
+
+// GetProducerName extracts the default title from producer response
+func GetProducerName(producer jikan.ProducerResponse) string {
+	for _, title := range producer.Data.Titles {
+		if title.Type == "Default" {
+			return title.Title
+		}
+	}
+	return "Studio"
+}

web/shared/ui.go

@@ -0,0 +1,10 @@
+package shared
+
+// TabClass returns the CSS class for watchlist filter tabs
+func TabClass(active bool) string {
+	base := "shrink-0 whitespace-nowrap bg-(--panel-soft) px-2 py-1 text-xs text-(--text-muted) no-underline hover:bg-(--surface-tab-hover) hover:text-(--text) hover:no-underline"
+	if active {
+		return "shrink-0 whitespace-nowrap bg-(--surface-tab-active) px-2 py-1 text-xs text-(--accent) no-underline hover:no-underline"
+	}
+	return base
+}