import mysql.connector
import sys, os
import time
import datetime
from tkinter import *
from tkinter.messagebox import *
class Libop:
 user = 'root'
 pwd = ''
 host = 'localhost'
 db = 'library'
 data_file = 'mysql-test.dat'
 def __init__(self):
 print("init")
 try:
  self.library=mysql.connector.connect(user=Libop.user,password=Libop.pwd,host=Libop.host,database=Libop.db)
  self.cursor=self.library.cursor()
  print("Connect successfully")
 except mysql.connector.Error as err:
  print("WTF! initial wrong")
  print("Error: {}".format(err.msg))
  sys.exit()
 def select(self,str):
 try:
  self.cursor.execute(str)
  return self.cursor.fetchall()
 except mysql.connector.Error as err:
  print("WTF! select wrong")
  print("Error:{}".format(err.msg))
  print(str)
  showinfo("ERROR","Please input the parameter correctly")
 def update(self,str):
 try:
  self.cursor.execute(str)
  self.library.commit()
  return 1
 except mysql.connector.Error as err:
  print("WTF! update wrong")
  print("Error:{}".format(err.msg))
  return 0
 def delete(self,str):
 try:
  self.cursor.execute(str)
  self.library.commit()
 except mysql.connector.Error as err:
  print("WTF! delete wrong")
  print("Error:{}".format(err.msg))
 def insert(self,str):
 try:
  self.cursor.execute(str)
  self.library.commit()
  return 1
 except mysql.connector.Error as err:
  print("WTF! insert wrong")
  print("Error:{}".format(err.msg))
  return 0
LIB = Libop()  
root=Tk()
root.wm_title("Library System")
str1=str2=''
book_type=name=year=publisher=writer=price1=price2=order=''
cardid=''
def call_rent(en1,en2,brok):
 st1=en1.get()
 st2=en2.get()
 rent(st1,st2,brok)
def call_return(en1,en2):
 st1=en1.get()
 st2=en2.get()
 back(st1,st2)
def login():
 str1=ide.get()
 str2=pwde.get()
 curs=LIB.select("select manage_id,pswd from managers where manage_id='{}' and pswd='{}'".format(str1,str2))
 if ((str1,str2) in curs): 
 showinfo('message','login success')
 label_book_id=Label(root,text='BookID:').grid(row=0,column=4,sticky=W)
 label_card_id=Label(root,text='CardID:').grid(row=1,column=4,sticky=W)
 entry_book_id=Entry(root)
 entry_book_id.grid(row=0,column=5,sticky=W)
 entry_card_id=Entry(root)
 entry_card_id.grid(row=1,column=5,sticky=W)
 entry_cardid=Entry(root)
 entry_cardid.grid(row=5,column=0,sticky=W)
 #buttons
 button_insert=Button(root,text='insert book',command=inbook)
 button_insert.grid(row=0,column=2,sticky=W)
 button_return=Button(root,text='rent book')
 button_return.bind("<ButtonRelease-1>",lambda z:call_rent(entry_book_id,entry_card_id,str1))
 button_return.grid(row=0,column=3,sticky=W)
 button_rent=Button(root,text='return book')
 button_rent.bind("<ButtonRelease-1>",lambda l:call_return(entry_book_id,entry_card_id))
 button_rent.grid(row=1,column=2,sticky=W)
 button_delete=Button(root,text='delete card')
 button_delete.bind("<ButtonRelease-1>",lambda j:deletecard(entry_cardid))
 button_delete.grid(row=5,column=2,sticky=W)
 button_add=Button(root,text='add card',command=addwindow)
 button_add.grid(row=5,column=3,sticky=W)
 button_display=Button(root,text='display books')
 button_display.bind("<ButtonRelease-1>",lambda y:display_rent(entry_cardid))
 button_display.grid(row=5,column=1,sticky=W)
 else: 
 showinfo(title='login failure',message="WRONG ID OR PASSWORD!")
#add a card
def addwindow():
 top=Toplevel(root)
 label_card_id=Label(top,text='card id:').grid(row=0,column=0,sticky=W)
 label_name=Label(top,text='Name:').grid(row=1,column=0,sticky=W)
 label_unit=Label(top,text='Units:').grid(row=2,column=0,sticky=W)
 label_type=Label(top,text='type:').grid(row=3,column=0,sticky=W)
 entry_card_id=Entry(top)
 entry_card_id.grid(row=0,column=1,sticky=W)
 entry_name=Entry(top)
 entry_name.grid(row=1,column=1,sticky=W)
 entry_unit=Entry(top)
 entry_unit.grid(row=2,column=1,sticky=W)
 entry_type=Entry(top)
 entry_type.grid(row=3,column=1,sticky=W)
 button_constructe=Button(top,text='Add')
 button_constructe.bind("<ButtonRelease-1>",lambda q:addcard(entry_card_id,entry_name,entry_unit,entry_type))
 button_constructe.grid(row=4)
def addcard(en1,en2,en3,en4):
 cardid=en1.get()
 name=en2.get()
 unit=en3.get()
 c_type=en4.get()
 select="select card_id from lib_card where card_id='{}'".format(cardid)
 if (c_type not in ('T','S','O')): 
 showinfo('error',"NO SUCH TYPE")
 return 0
 line=LIB.select(select)
 if (len(line)!=0):
 showinfo('addition failure',"Already have this ID!")
 else:
 insert="insert into lib_card values('{}','{}','{}','{}')".format(cardid,name,unit,c_type)
 LIB.insert(insert)
 showinfo('ok','addition success')
 return 1
#insert book
def inbook():
 insert_book=Toplevel(root)
 insert_book.title('insert book')
 text_insert=Text(insert_book)
 text_insert.pack()
 button_confirm=Button(insert_book,text='confirm')
 button_confirm.bind("<ButtonRelease-1>",lambda x:booksin(text_insert))
 button_confirm.pack()
def booksin(text_insert):
 string=text_insert.get('0.0',END)
 string=string.split('\n')
 print(string)
 for line in string:
 if line=='':
  break
 lines=line.split(',')
 bookid=lines[0][1:]
 t=lines[1]
 name=lines[2]
 publisher=lines[3]
 year=lines[4]
 writer=lines[5]
 price=lines[6]
 total=lines[7]
 stock=lines[8][:-1]
 if (int(stock)>int(total) or int(price)<0): 
  showinfo('insert error!','stock wrong or price is below 0!')
  continue
 #print("insert into book values('{}','{}','{}','{}',{},'{}',{},{},{})".format(bookid,t,name,publisher,year,writer,price,total,stock))
 t=LIB.insert("insert into book values('{}','{}','{}','{}',{},'{}',{},{},{})".format(bookid,t,name,publisher,year,writer,price,total,stock))
 if (t==0):
  showinfo('error','book {} has been inserted'.format(bookid))
 showinfo('success','insert has been done')
#original window
label_type=Label(root,text='TYPE').grid(row=3,sticky=W,column=0)
label_name=Label(root,text='NAME').grid(row=3,sticky=W,column=1)
label_year=Label(root,text='YEAR(XXXX-XXXX)').grid(row=3,sticky=W,column=2)
label_publisher=Label(root,text='PUBLISHER').grid(row=3,sticky=W,column=3)
label_writer=Label(root,text='WRITER').grid(row=3,sticky=W,column=4)
label_lowprice=Label(root,text='lowestprice').grid(row=3,sticky=W,column=5)
label_highprice=Label(root,text='highestprice').grid(row=3,sticky=W,column=6)
label_order=Label(root,text='order by').grid(row=0,sticky=W,column=6)

entry_type=Entry(root)
entry_type.grid(row=4,column=0,sticky=W)
entry_name=Entry(root)
entry_name.grid(row=4,column=1,sticky=W)
entry_year=Entry(root)
entry_year.grid(row=4,column=2,sticky=W)
entry_publisher=Entry(root)
entry_publisher.grid(row=4,column=3,sticky=W)
entry_writer=Entry(root)
entry_writer.grid(row=4,column=4,sticky=W)
entry_price1=Entry(root)
entry_price1.grid(row=4,column=5,sticky=W)
entry_price2=Entry(root)
entry_price2.grid(row=4,column=6,sticky=W)

#order the result
order_index=0
Lb_order=Listbox(root,selectmode=SINGLE,height=6)
order='name','book_type','T','writer','price','publisher'
Lb_order.insert(0,order[0])
Lb_order.insert(1,"type")
Lb_order.insert(2,"year")
Lb_order.insert(3,order[3])
Lb_order.insert(4,order[4])
Lb_order.insert(5,order[5])
Lb_order.grid(row=0,column=7,sticky=W)
Lb_order.selection_set(0)
def booksearch():
 select="select BookID,book_type,name,publisher,T,writer,price,total,stock from book"

 order_index=Lb_order.curselection()
 if (len(order_index)!=0):
 order_index=order_index[0]
 else:
 order_index=0;
 orders=order[order_index]
 name=entry_name.get()
 book_type=entry_type.get()
 publisher=entry_publisher.get()
 year=entry_year.get()
 writer=entry_writer.get()
 price1=entry_price1.get()
 price2=entry_price2.get()
 year1=year[0:4]
 year2=year[5:9]
 count=0
 if name!='':
 if count!=0:
  select+=" and"
 else:select+=" where"
 count+=1
 select+=" name='{}'".format(name)
 if book_type!='':
 if count!=0:
  select+=" and"
 else:select+=" where"
 count+=1
 select+=" book_type='{}'".format(book_type)
 if publisher!='':
 if count!=0:
  select+=" and"
 else:select+=" where"
 count+=1
 select+=" publisher='{}'".format(publisher)
 if year1!='':
 if year2=='':
  if count!=0:
  select+=" and"
  else:select+=" where"
  count+=1
  select+=" t={}".format(year1)
 else:
  if count!=0:
  select+=" and"
  else:select+=" where"
  count+=1
  select+=" T between {} and {}".format(year1,year2)
 if writer!='':
 if count!=0:
  select+=" and"
 else:select+=" where"
 count+=1
 select+=" writer='{}'".format(writer)
 if price1!='':
 if price2!='':
  if count!=0:
  select+=" and"
  else:select+=" where"
  count+=1
  select+=" price between {} and {}".format(price1,price2)
 else:
  if count!=0:
  selece+="and"
  else:select+=" where"
  count+=1
  select+=" price={}".format(price1)
 if orders=='':
 select+=" order by name"
 else:
 select+=" order by {}".format(orders)
 print(select)
 curs=LIB.select(select)
 searchresult=Toplevel(root)
 searchresult.title('result')
 text=Text(searchresult)
 text.insert(INSERT,"BookID\ttype\tname\tpublish\tyear\twriter\tprice\ttotal\tstock\n")
 for (BookIDs,book_types,names,publishers,years,writers,prices,totals,stocks) in curs:
 text.insert(INSERT,"{}\t{}\t{}\t{}\t{}\t{}\t{}\t{}\t{}\n".format(BookIDs,book_types,names,publishers,years,writers,prices,totals,stocks))
 text.pack()
def display_rent(en_cardid):
 cardid=en_cardid.get()
 select="select card_id from lib_card where card_id='{}'".format(cardid)
 curs=LIB.select(select)
 order_index=Lb_order.curselection()
 if len(order_index)!=0 :
 order_index=order_index[0]
 else:
 order_index=0;
 orders=order[order_index]
 if ((cardid,) in curs):
 select="select card_id,name,unit,c_type from lib_card where card_id='{}'".format(cardid)
 curs=LIB.select(select)
 top=Toplevel(root)
 text=Text(top)
 for (card_id,name,unit,c_type) in curs:
  text.insert(INSERT,"card_id:{}\n".format(card_id))
  text.insert(INSERT,"name:{}\n".format(name))
  text.insert(INSERT,"unit:{}\n".format(unit))
  text.insert(INSERT,"c_type:{}\n".format(c_type))
 select="select BookID,book_type,name,publisher,t,writer,price,total,stock from book natural join record where card_id='{}' and still=1 order by {}".format(cardid,orders)
 curs=LIB.select(select)
 text.insert(INSERT,"BookID\ttype\tname\tpublish\tyear\twriter\tprice\ttotal\tstock\n")
 for (BookID,book_type,name,publisher,t,writer,price,total,stock) in curs:
  text.insert(INSERT,"{}\t{}\t{}\t{}\t{}\t{}\t{}\t{}\t{}\n".format(BookID,book_type,name,publisher,t,writer,price,total,stock))
 text.pack()
 else:
 showinfo('Error',"NO SUCH CARD")
def checkcard(cardid):
 select="select card_id from lib_card where card_id='{}'".format(cardid)
 curs=LIB.select(select)
 if (cardid,) in curs:
 return 1
 else:
 return 0

def rent(BookID,cardid,brokerage):
 if not (checkcard(cardid)): 
 showinfo('error','no such card')
 return 0
 select="select stock from book where BookID='{}'".format(BookID)
 stocks=LIB.select(select)
 #stocks=curs.fetchall()
 stock=stocks[0]
 if (stock>(0,)):
 update="update book set stock=stock-1 where BookID='{}'".format(BookID)
 flag=LIB.update(update)
 if flag:
  insert="insert into record values('','{}','{}',CURDATE(),DATE_ADD(CURDATE(),INTERVAL 1 MONTH),'{}',1)".format(cardid,BookID,brokerage)
  LIB.insert(insert)
  showinfo('rent success','OK')
 else:
  showinfo('rent failure',"stock wrong")
 else:
 select="select return_time from record where BookID='{}' and return_time>=all(select return_time from record where BookID='{}')".format(BookID,BookID)
 date=LIB.select(select)
 #date=curs.fetchall()
 date=str (date)
 showinfo('Out of stock',"There are no more such book,The recent returning will be at:{}-{}-{}".format(date[16:20],date[22:23],date[26:27]))
 
 return 1
def back(BookID,cardid):
 if not(checkcard(cardid)): return 0
 select="select BookID from record where BookID='{}' and card_id='{}' and still=1".format(BookID,cardid)
 curs=LIB.select(select)
 if (BookID,) in curs:
 select="select record_id from record where BookID='{}' and card_id='{}' and still=1 order by rent_time".format(BookID,cardid)
 cur=LIB.select(select)
 #cur=curss.fetchall()
 for record in cur:
  recordid=str (record)
  recordid=recordid[1:]
  recordid=recordid[:-2]
  update="update record set still=0 where record_id='{}'".format(recordid)
  LIB.update(update)
  update="update book set stock=stock+1 where BookID='{}'".format(BookID)
  LIB.update(update)
  break
 showinfo('message',"Return Success!")
 return 1
 else:
 showinfo('error',"You can't return the book!")
 return 1

def deletecard(card):
 cardid=card.get()
 if not (checkcard(cardid)):
 showinfo('error',"NO SUCH CARD")
 return 0
 select="select record_id from record where card_id='{}' and still=1".format(cardid)
 curs=LIB.select(select)
 for record_id in curs:
 showinfo('error',"Some books this card rented haven't been returned")
 return 0
 delete="delete from lib_card where card_id='{}'".format(cardid)
 LIB.delete(delete)
 showinfo('ok','success')
 return 1
label_id=Label(root,text='ID: ')
label_id.grid(row=0,sticky=W)
ide=Entry(root)
ide.grid(row=0,column=1,sticky=E)
label_psw=Label(root,text='PassWord: ').grid(row=1,sticky=W)
pwde=Entry(root,show='*')
pwde.grid(row=1,column=1,sticky=E)
log_button=Button(root,text='Login',command=login)
log_button.grid(row=2,column=1)

button_search=Button(root,text='Search Book',command=booksearch)
button_search.grid(row=4,column=7,sticky=W)
print("all done")
root.mainloop()