author is now on separate table

internal/query/search.go

@@ -1,6 +1,7 @@
 package query
 
 import (
+	"regexp"
 	"strings"
 
 	"git.artlef.fr/PersonalLibraryManager/internal/model"
@@ -34,10 +35,22 @@ func FetchBookSearchGetCount(db *gorm.DB, userId uint, searchterm string) (int64
 }
 
 func fetchBookSearchQuery(db *gorm.DB, userId uint, searchterm string) *gorm.DB {
-	query := db.Model(&model.Book{})
-	query = query.Select("books.id, books.title, books.author, user_books.rating, user_books.read, user_books.want_read, " + selectStaticFilesPath())
-	query = query.Joins("left join user_books on (user_books.book_id = books.id and user_books.user_id = ?)", userId)
-	query = query.Joins("left join static_files on (static_files.id = books.cover_id)")
-	query = query.Where("LOWER(books.title) LIKE ?", "%"+strings.ToLower(searchterm)+"%")
+	query := fetchBookSearchQueryBuilder(db, userId)
+	isIsbn, _ := regexp.Match(`\d{10,13}`, []byte(searchterm))
+	if isIsbn {
+		query = query.Where("books.isbn = ?", searchterm)
+	} else {
+		query = query.Where("LOWER(books.title) LIKE ?", "%"+strings.ToLower(searchterm)+"%")
+	}
+
+	return query
+}
+
+func fetchBookSearchQueryBuilder(db *gorm.DB, userId uint) *gorm.DB {
+	query := db.Model(&model.Book{})
+	query = query.Select("books.id, books.title, authors.name as author, user_books.rating, user_books.read, user_books.want_read, " + selectStaticFilesPath())
+	query = joinAuthors(query)
+	query = query.Joins("left join user_books on (user_books.book_id = books.id and user_books.user_id = ?)", userId)
+	query = joinStaticFiles(query)
 	return query
 }