hotfix: apis,domain,global-utils - Upsert API by refining find-or-create

Author: minwoo1999

apis/src/main/kotlin/org/yapp/apis/book/service/BookManagementService.kt

@@ -10,10 +10,16 @@ class BookManagementService(
     private val bookDomainService: BookDomainService
 ) {
     fun findOrCreateBook(request: BookCreateRequest): BookCreateResponse {
-        val isbn = request.validIsbn()
-
-        val bookVO = bookDomainService.findByIsbn(isbn)
-        return BookCreateResponse.from(bookVO)
+        val bookInfoVO = bookDomainService.findOrCreate(
+            request.validIsbn(),
+            request.validTitle(),
+            request.validAuthor(),
+            request.validAuthor(),
+            request.coverImageUrl,
+            request.publicationYear,
+            request.description
+        )
+        return BookCreateResponse.from(bookInfoVO)
     }
 
 }

domain/src/main/kotlin/org/yapp/domain/book/BookDomainService.kt

@@ -15,6 +15,36 @@ class BookDomainService(
         return BookInfoVO.newInstance(book)
     }
 
+    fun findOrCreate(
+        isbn: String,
+        title: String,
+        author: String,
+        publisher: String,
+        coverImageUrl: String,
+        publicationYear: Int? = null,
+        description: String? = null
+    ): BookInfoVO {
+        return findByIsbnOrNull(isbn) ?: run {
+            val newBook = Book.create(
+                isbn = isbn,
+                title = title,
+                author = author,
+                publisher = publisher,
+                coverImageUrl = coverImageUrl,
+                publicationYear = publicationYear,
+                description = description
+            )
+            val savedBook = bookRepository.save(newBook)
+            BookInfoVO.newInstance(savedBook)
+        }
+    }
+
+    private fun findByIsbnOrNull(isbn: String): BookInfoVO? {
+        val book = bookRepository.findById(isbn)
+        return book?.let { BookInfoVO.newInstance(it) }
+    }
+
+
     fun save(
         isbn: String,
         title: String,

global-utils/src/main/kotlin/org/yapp/globalutils/validator/IsbnValidator.kt

@@ -1,7 +1,7 @@
 package org.yapp.globalutils.validator
 
 object IsbnValidator {
-    private val ISBN_REGEX = Regex("^(\\d{10}|\\d{13})$")
+    private val ISBN_REGEX = Regex("^(.{10}|.{13})$")
 
     fun isValidIsbn(isbn: String): Boolean {
         return isbn.matches(ISBN_REGEX)