refactor: split modules and harden scraping workflows

internal/service/emby_items_cache.go

@@ -0,0 +1,55 @@
+package service
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+type embyItemsCacheValue struct {
+	Items            []map[string]any `json:"items"`
+	TotalRecordCount int64            `json:"total_record_count"`
+	StartIndex       int              `json:"start_index"`
+}
+
+type embyLatestCacheValue struct {
+	Items []map[string]any `json:"items"`
+}
+
+func (e *EmbyService) embyItemsCacheKey(kind string, p ItemsParams) string {
+	includeTypes := append([]string(nil), p.IncludeItemTypes...)
+	filters := append([]string(nil), p.Filters...)
+	ids := append([]string(nil), p.IDs...)
+	sort.Strings(includeTypes)
+	sort.Strings(filters)
+	sort.Strings(ids)
+	sum := sha256.Sum256([]byte(strings.Join([]string{
+		kind,
+		p.UserID,
+		p.ParentID,
+		strings.Join(ids, ","),
+		p.SearchTerm,
+		strings.Join(includeTypes, ","),
+		strings.Join(filters, ","),
+		strconv.FormatBool(p.Recursive),
+		p.SortBy,
+		p.SortOrder,
+		strconv.Itoa(p.StartIndex),
+		strconv.Itoa(p.Limit),
+	}, "|")))
+	return "media:emby:" + hex.EncodeToString(sum[:])
+}
+
+func (e *EmbyService) embyLatestCacheKey(userID, parentID string, limit int) string {
+	sum := sha256.Sum256([]byte(strings.Join([]string{"latest", userID, parentID, strconv.Itoa(limit)}, "|")))
+	return "media:emby:" + hex.EncodeToString(sum[:])
+}
+
+func (e *EmbyService) mediaCacheTTLSeconds() int {
+	if e == nil || e.cfg == nil || e.cfg.Cache.MediaTTLSeconds < 1 {
+		return 15
+	}
+	return e.cfg.Cache.MediaTTLSeconds
+}