added barcodescanner preisfoo

preisanzeige/main.py

@@ -0,0 +1,131 @@
+#!/usr/bin/env python3
+__author__ = 'progamler'
+
+from os import system
+import curses
+from sqlalchemy import Table, Column, Integer, String, MetaData, ForeignKey, create_engine
+from sqlalchemy.sql import select
+
+#produkte = Table('produkte', metadata,
+ #   Column('barcode', Integer, primary_key=True),
+ #   Column('name', String(40)),
+ #    Column('preis', Integer),)
+
+
+def create_db():
+    db = create_engine('sqlite:///./db.sqlite')
+    metadata = MetaData()
+    produkte = Table('produkte', metadata,
+    Column('barcode', Integer, primary_key=True),
+    Column('name', String(40)),
+    Column('preis', Integer),)
+    users = Table('user', metadata,
+    Column('barcode', Integer, primary_key=True),
+    Column('name', String(40)),)
+    #transaktion = Table('transaktion', metadata,
+    #Column('produkt', Integer, ForeignKey('produkte.barcode')),
+    #Column('user', Integer ,ForeignKey('users.barcode')))
+
+    metadata.create_all(db)
+
+    i = produkte.insert()
+    db.execute(i, name='Wasser', preis=0.5, barcode='42600370288')
+    db.execute(i, name='Over 9000', preis=9000.01, barcode='2')
+    db.execute(i, name='l33t', preis=1337, barcode='3')
+    db.execute(i, name='Clubmate 0.5', preis=1.5, barcode='4029764001807')
+
+    u = users.insert()
+    db.execute(u, barcode='23', name='proGamler')
+
+
+def return_price(produkt):
+    db = create_engine('sqlite:///./db.sqlite')
+    metadata = MetaData(db)
+    metadata.reflect()
+
+    produkte = Table('produkte', metadata, autoload=True)
+    s = select(['name', 'preis']).where(produkte.c.barcode == produkt)
+
+    result = db.execute(s)
+    return result.fetchone()
+
+def isproduct(code):
+    foo = return_price(code)
+    try :
+        print(foo.name)
+        return True
+    except:
+        return False
+
+def user(code):
+    db = create_engine('sqlite:///./db.sqlite')
+    metadata = MetaData(db)
+    metadata.reflect()
+
+    user = Table('user', metadata, autoload=True)
+    s = select(['name']).where(user.c.barcode == code)
+
+    result = db.execute(s)
+    x = result.fetchone()
+    return x.name
+def isuser(code):
+    try:
+        name = user(code)
+        return True
+    except:
+        return False
+def logout(x):
+    if x == 666:
+        return True
+    else:
+        return False
+
+x = 0
+name = ''
+list = []
+while x != int('01'):
+    screen = curses.initscr()
+
+    screen.clear()
+    screen.border(0)
+    screen.addstr(2, 2, "Please Scan Code")
+    screen.refresh()
+    if x != 0:
+        if isproduct(x):
+            pro = return_price(x)
+            screen.addstr(4, 4, pro.name)
+            list.append(x)
+        elif isuser(x):
+            name = user(x)
+            screen.addstr(4, 4, "Du wurdest eingeloggt")
+        elif logout(x):
+            name = ''
+            list = []
+
+
+    screen.addstr(2,30, name)
+    preis = 0
+    y = 6
+    for a in list:
+        foo = return_price(a)
+        screen.addstr(y,30, str(foo.preis))
+        screen.addstr(y,4, foo.name)
+        y = y+1
+        preis = preis+foo.preis
+    screen.addstr(y+1,4, "----------------------------------------------")
+    screen.addstr(y+2,4, "Gesamtsumme:")
+    screen.addstr(y+2,30, str(preis))
+
+    k = screen.getstr(3,3,60).decode('utf-8').rstrip()
+    if k != '':
+        x = int(k)
+    else:
+        x = 0
+
+
+
+
+
+
+curses.endwin()
+