Add files via upload

book_transactions.py

@@ -0,0 +1,98 @@
+## All function about user transactions are here listed
+import os
+import json
+
+def show_books():
+    # Show all books in the library
+    # Read books.json file
+    current_dir = os.path.dirname(os.path.abspath(__file__))
+
+    json_path = os.path.join(current_dir, 'books.json')
+
+    with open(json_path, 'r', encoding='utf-8') as f:
+        data = json.load(f)
+        books = [item['Kitap_Adi'] for item in data]
+        i = 0
+        for book in books:
+            i += 1
+            print(f"{i}. {book}")
+    input('Please press enter to cotinue')
+
+def search_book():
+    # Take an input from user, barcode or book name. Then list all books that have given string value in the name
+    current_dir = os.path.dirname(os.path.abspath(__file__))
+    json_path = os.path.join(current_dir, 'books.json')
+
+    search_word = input("Enter the barcode or the name of the book : ")
+
+    try :
+        barcode = int(search_word) # If the input is an integer then we assume its barcode
+        name = None
+    except :
+        name = search_word
+        barcode = None
+
+    with open(json_path, 'r', encoding='utf-8') as f:
+        data = json.load(f)
+    if name != None:
+        books = list(filter(lambda x : name.lower() in x['Kitap_Adi'].lower(), data))
+    elif barcode != None:
+        books = list(filter(lambda x : barcode == x['Barkod'], data))
+
+    for book in books:
+        print(f"{book['Barkod']}- {book['Kitap_Adi']}")
+
+def add_book():
+    # Get the book information from user and add the book to our database/library
+    try:
+        barcode = int(input('Scan the barcode(13 digits) :'))
+        book_name = input("Enter book name : ")
+        language = input("Enter the language if the book : ")
+        price = int(input("Whats the price : "))
+        publisher = input("Publisher : ")
+        author = input("Who is the author : ")
+    except:
+        print('Invalid input')
+
+
+    # if the file is there then just read and write
+    # If its not there we need to create it first
+
+    current_dir = os.path.dirname(os.path.abspath(__file__))
+    books_json_path = os.path.join(current_dir, 'books.json')
+
+    with open(books_json_path, 'r', encoding= 'utf-8') as f:
+        data = json.load(f)
+        print("OK:", type(data), "items:", len(data) if isinstance(data, list) else "n/a")
+
+        new_book = {
+        'Barkod' : int(barcode),
+        'Dil' : language,
+        'Fiyat' : int(price),
+        'Kitap_Adi' : book_name,
+        'Yayinevi' : publisher,
+        'Yazar' : author
+         }
+
+        data.append(new_book)
+
+    with open(books_json_path ,'w' , encoding='utf-8') as f:
+        json.dump(data,f, ensure_ascii=False, indent=4)
+
+        input('Book is succesfully saved. Please press enter to continue...')
+
+def delete_book(barcode):
+
+    current_dir = os.path.dirname(os.path.abspath(__file__))
+    books_json_path = os.path.join(current_dir, 'books.json')
+
+    with open(books_json_path, 'r', encoding= 'utf-8') as f:
+        data = json.load(f)
+        book = filter(lambda x:x['Barkod'] == barcode, data)
+
+        data.remove(book)
+
+    with open(books_json_path ,'w' , encoding='utf-8') as f:
+        json.dump(data,f, ensure_ascii=False, indent=4)
+
+        # input('Book is succesfully deleted. Please press enter to continue...')