Support metadata scraping for ISO disc images

internal/service/scanner_iso.go

@@ -0,0 +1,40 @@
+package service
+
+import (
+	"path/filepath"
+	"strings"
+)
+
+func preferISOParentScrapeIdentity(mediaPath, libraryRoot, title string, year int) (string, int) {
+	if !strings.EqualFold(filepath.Ext(pathBaseSlash(mediaPath)), ".iso") || !genericISOImageTitle(title) {
+		return title, year
+	}
+	parent := pathBaseSlash(parentSlashPath(mediaPath))
+	if parent == "" || isGenericMediaCategoryFolder(parent) || isTechnicalMediaFolder(parent) {
+		return title, year
+	}
+	// CleanQuery expects a filename and would otherwise treat a trailing
+	// ".2024" folder suffix as a file extension.
+	parentTitle, parentYear := CleanQuery(parent + ".mkv")
+	if parentTitle == "" {
+		parentTitle = mediaFolderTitle(mediaPath, libraryRoot)
+	}
+	if parentTitle != "" {
+		title = parentTitle
+	}
+	if parentYear > 0 {
+		year = parentYear
+	}
+	return title, year
+}
+
+func genericISOImageTitle(title string) bool {
+	key := strings.ToLower(strings.TrimSpace(title))
+	key = strings.NewReplacer(" ", "", "_", "", "-", "", ".", "").Replace(key)
+	switch key {
+	case "bdmv", "bluray", "bluraydisc", "disc", "disk", "dvd", "movie", "video", "videots", "image", "iso":
+		return true
+	default:
+		return false
+	}
+}