from login import hoofdMenu
from postcode import checkpostcode
from PyQt5.QtCore import Qt, QAbstractTableModel
from PyQt5.QtGui import QFont, QPixmap, QIcon
from PyQt5.QtWidgets import  QLabel, QPushButton, QWidget, QGridLayout,\
       QComboBox, QDialog, QLineEdit, QMessageBox, QTableView, QVBoxLayout
from sqlalchemy import (Table, Column, Integer, String, MetaData,\
                        create_engine)
from sqlalchemy.sql import select, desc

def ongInvoer():
    msg = QMessageBox()
    msg.setStyleSheet("color: black;  background-color: gainsboro")
    msg.setWindowIcon(QIcon('./images/logos/logo.jpg'))
    msg.setIcon(QMessageBox.Information)
    msg.setText('Foutieve invoer\nzoekterm opnieuw invoeren s.v.p.!')
    msg.setWindowTitle('Leveranciers opvragen')               
    msg.exec_()
    
def geenRecord():
    msg = QMessageBox()
    msg.setStyleSheet("color: black;  background-color: gainsboro")
    msg.setWindowIcon(QIcon('./images/logos/logo.jpg'))
    msg.setIcon(QMessageBox.Warning)
    msg.setText('Geen record gevonden\nmaak een andere selektie s.v.p.!')
    msg.setWindowTitle('Leveranciers opvragen')               
    msg.exec_() 
    
def windowSluit(self, m_email):
    self.close()
    hoofdMenu(m_email)

def leveranciersKeuze(m_email):
    class Widget(QDialog):
        def __init__(self, parent=None):
            super(Widget, self).__init__(parent)
            self.setWindowTitle("Leveranciers Overzicht")
            self.setWindowIcon(QIcon('./images/logos/logo.jpg'))
    
            self.setFont(QFont('Times', 10))
    
            self.Keuze4 = QLabel()
            k4Edit = QComboBox()
            k4Edit.setFixedWidth(230)
            k4Edit.setFont(QFont("Times", 10))
            k4Edit.setStyleSheet("color: black;  background-color: #F8F7EE")
            k4Edit.addItem(' Sorteersleutel voor zoeken')
            k4Edit.addItem('1. Alle Leveranciers')
            k4Edit.addItem('2. Bedrijfsnaam')
            k4Edit.addItem('3. Leveranciernummer.')
            k4Edit.activated[str].connect(self.k4Changed)
            
            self.Zoekterm = QLabel()
            zktermEdit = QLineEdit()
            zktermEdit.setFixedWidth(220)
            zktermEdit.setFont(QFont("Times", 10))
            zktermEdit.textChanged.connect(self.zktermChanged)
     
            grid = QGridLayout()
            grid.setSpacing(20)
                           
            lbl = QLabel()
            pixmap = QPixmap('./images/logos/verbinding.jpg')
            lbl.setPixmap(pixmap)
            grid.addWidget(lbl , 0, 0, 1, 2)
                                  
            grid.addWidget(k4Edit, 2, 1)
            lbl1 = QLabel('Zoekterm')  
            lbl1.setAlignment(Qt.AlignRight | Qt.AlignVCenter)
            grid.addWidget(lbl1, 3, 0)
            grid.addWidget(zktermEdit, 3, 1)
            
            grid.addWidget(QLabel('\u00A9 2017 all rights reserved dj.jansen@casema.nl'), 5, 0, 1, 2,Qt.AlignCenter)
            
            logo = QLabel()
            pixmap = QPixmap('./images/logos/logo.jpg')
            logo.setPixmap(pixmap)
            grid.addWidget(logo , 0, 1, 1, 1, Qt.AlignRight)
            
            self.setLayout(grid)
            self.setGeometry(600, 300, 150, 150)
    
            applyBtn = QPushButton('Zoeken')
            applyBtn.clicked.connect(self.accept)
                
            grid.addWidget(applyBtn, 4, 1, 1 , 1, Qt.AlignRight)
            applyBtn.setFont(QFont("Arial", 10))
            applyBtn.setFixedWidth(100)
            applyBtn.setStyleSheet("color: black;  background-color: gainsboro")
            
            cancelBtn = QPushButton('Sluiten')
            cancelBtn.clicked.connect(lambda: windowSluit(self, m_email))
    
            grid.addWidget(cancelBtn, 4, 1)
            cancelBtn.setFont(QFont("Arial", 10))
            cancelBtn.setFixedWidth(100)
            cancelBtn.setStyleSheet("color: black;  background-color: gainsboro")
                   
        def k4Changed(self, text):
            self.Keuze4.setText(text)
            
        def zktermChanged(self, text):
            self.Zoekterm.setText(text)
 
        def returnk4(self):
            return self.Keuze4.text()
        
        def returnzkterm(self):
            return self.Zoekterm.text()
        
        @staticmethod
        def getData(parent=None):
            dialog = Widget(parent)
            dialog.exec_()
            return [dialog.returnk4(), dialog.returnzkterm()]       

    window = Widget()
    data = window.getData()
    if not data[0] or data[0][0] == ' ':
        keuze = 0
    elif data[0]:
        keuze = int(data[0][0])
    else:
        keuze = 0
    if data[1]:
        zoekterm = data[1]
    else:
        zoekterm = ''
    toonLeveranciers(keuze, zoekterm, m_email)

def toonLeveranciers(keuze,zoekterm, m_email):
    import validZt
    metadata = MetaData()
    leveranciers = Table('leveranciers', metadata,
        Column('leverancierID', Integer(), primary_key=True),
        Column('bedrijfsnaam', String),
        Column('rechtsvorm', String),
        Column('btwnummer', String),
        Column('kvknummer', String),
        Column('telnr', String),
        Column('postcode', String),  
        Column('huisnummer', String),
        Column('toevoeging', String))
                          
    engine = create_engine('postgresql+psycopg2://postgres@localhost/bisystem')
    con = engine.connect()
    if keuze == 1:
         sel = select([leveranciers]).order_by(desc(leveranciers.c.leverancierID)) 
    elif keuze == 2:
         sel = select([leveranciers]).where(leveranciers.c.bedrijfsnaam.ilike('%'+zoekterm+'%'))
    elif keuze == 3 and validZt.zt(zoekterm, 3):
        zoekterm = int(zoekterm)
        sel = select([leveranciers]).where(leveranciers.c.leverancierID == zoekterm)
    else:
        ongInvoer()
        leveranciersKeuze(m_email)
        
    if con.execute(sel).fetchone():
        rplev = con.execute(sel)
    else:
        geenRecord()
        leveranciersKeuze(m_email)
     
    class MyWindow(QDialog):
        def __init__(self, data_list, header, *args):
            QWidget.__init__(self, *args,)
            self.setGeometry(50, 50, 1500, 900)
            self.setWindowTitle('Leveranciers opvragen')
            self.setWindowIcon(QIcon('./images/logos/logo.jpg')) 
            self.setWindowFlags(self.windowFlags()| Qt.WindowSystemMenuHint |
                              Qt.WindowMinMaxButtonsHint)
            table_model = MyTableModel(self, data_list, header)
            table_view = QTableView()
            table_view.setModel(table_model)
            font = QFont("Arial", 10)
            table_view.setFont(font)
            table_view.resizeColumnsToContents()
            table_view.setSelectionBehavior(QTableView.SelectRows)
            #table_view.clicked.connect(showLeverancier)
            layout = QVBoxLayout(self)
            layout.addWidget(table_view)
            self.setLayout(layout)
    
    class MyTableModel(QAbstractTableModel):
        def __init__(self, parent, mylist, header, *args):
            QAbstractTableModel.__init__(self, parent, *args)
            self.mylist = mylist
            self.header = header
        def rowCount(self, parent):
            return len(self.mylist)
        def columnCount(self, parent):
            return len(self.mylist[0])
        def data(self, index, role):
            veld = self.mylist[index.row()][index.column()]
            if not index.isValid():
                return None
            elif role == Qt.TextAlignmentRole and (type(veld) == float or type(veld) == int):
                return Qt.AlignRight | Qt.AlignVCenter
            elif role != Qt.DisplayRole:
                return None
            if type(veld) == float:
                return '{:12.2f}'.format(veld)
            else:
                return veld
        def headerData(self, col, orientation, role):
            if orientation == Qt.Horizontal and role == Qt.DisplayRole:
                return self.header[col]
            return None
  
    header = ['Leveranciernummer','Bedrijfsnaam', 'Rechtsvorm','BTWnummer',\
              'KvKnummer','Telefoonnummer','Straat', 'Huisnummer','Toevoeging',\
              'Postcode','Woonplaats']  
  
    data_list=[]
    for row in rplev:
        mstrtplts = checkpostcode(row[6], int(row[7]))
        data_list += [(row[0],row[1],row[2],row[3],row[4],row[5],mstrtplts[0],int(row[7]),\
                      row[8],row[6], mstrtplts[1])] 
        
    win = MyWindow(data_list, header)
    win.exec_()
    leveranciersKeuze(m_email)