#coding=utf-8
import wx
from Backend import Database,Customer

class ID:
    """ An object that returns unique identifiers """
    _ids = {}
    _n_ids = 1
    
    @staticmethod
    def get_id(s_key):
        if ID._ids.__contains__(s_key):
            return ID._ids[s_key]
        else:
            ID._ids[s_key] = ID._n_ids
            ID._n_ids += 1
            return ID._ids[s_key]


class MainFrame(wx.Frame):      
    """ The main frame of the GUI """
    def __init__(self, control):
        wx.Frame.__init__(self, None)
        self.control = control

        self.SetTitle("Wx Test")
        self.CreateStatusBar()      
        self.MakeMenu()

        self.splitter = wx.SplitterWindow(self, -1, style=wx.SP_BORDER)
        self.splitter.SetMinimumPaneSize(50)
        
        tree_panel = wx.Panel(self.splitter, -1)
        tree_box = wx.BoxSizer(wx.VERTICAL)
        
        sort_choices = ["Sort by first name", "Sort by last name"]
        sort_combo = wx.ComboBox(tree_panel,ID.get_id("sort_combo"), choices=sort_choices, style=wx.CB_SORT|wx.CB_READONLY, value=sort_choices[0]) #, (0,0), (-1,-1), choices=sort_choices, style=wx.CB_READONLY|wx.CB_SORT)        
        tree_box.Add(sort_combo, 0, wx.EXPAND)  
        
        self.tree = wx.ListCtrl(tree_panel, -1, style=wx.LC_REPORT) #wx.TreeCtrl(tree_panel, -1, wx.DefaultPosition, (-1,-1), wx.TR_HIDE_ROOT | wx.TR_NO_BUTTONS | wx.TR_NO_LINES)
        tree_box.Add(self.tree, 1, wx.EXPAND)
        self.tree.InsertColumn(0, "First Name")
        self.tree.InsertColumn(1, "Last Name")

        self.tree.Bind(wx.EVT_TREE_SEL_CHANGED, self.OnSelChanged, id=ID.get_id("id_string"))

        #tree.SetColumnWidth(0, 70)
        #tree.SetColumnWidth(1, 70)

        #root = tree.AddRoot("Customers")
        
        tree_panel.SetSizer(tree_box)       

        self.notebook = wx.Notebook(self.splitter, ID.get_id("notebook")) #,style=wx.NB_TOP)    
        self.splitter.SplitVertically(tree_panel, self.notebook)
        self.Refresh()
        

    #def MakeEntryLabel(self
    def MakeCustomerPage(self, customer):
        """ Displays a customer's information in the GUI """
        scroll = wx.ScrolledWindow(self.notebook)
        panel = wx.Panel(scroll, -1)
        return scroll       

    def OnNewCustomer(self, event):
        c = Customer(" ", " ")  #uninitialized customer
        person = self.control.findCustomer( (" ", " ") )
        if len(person) > 0:
            dlg = wx.MessageDialog(self, "The customer already exists.", "Error", wx.OK|wx.ICON_ERROR)
            dlg.ShowModal()
            dlg.Destroy()
        else:
            self.control.store(c)
            self.Refresh()

    def OnDelCustomer(self, event):
##        c = #customer selected, to be filled in
##        person = self.control.findCustomer( (c["first_name"], c["last_name"]) )
##        self.control.deleteCustomer(c)
##        self.Refresh()
        pass

    def OnNewCar(self, customer):
        pass

    def OnDelCar(self, customer, licensePlate):
        pass

    def Refresh(self):
        self.tree.DeleteAllItems()
        ppl = self.control.findAllCustomers()
        for i in range(len(ppl)):
            person = ppl[i]
            self.tree.InsertStringItem(i, person[0])
            self.tree.SetStringItem(i, 1, person[1])
        

    def MakeMenu(self):
        filemenu = wx.Menu()
        new_submenu = wx.Menu()
        new_submenu.Append(ID.get_id("new_customer"), "Customer", "")
        new_submenu.Append(ID.get_id("new_car"), "Vehicle", "")     

        filemenu.AppendMenu(ID.get_id("new"), "New ...", new_submenu)

        del_submenu = wx.Menu()
        del_submenu.Append(ID.get_id("del_customer"), "Customer", "")
        del_submenu.Append(ID.get_id("del_car"), "Vehicle", "")  

        filemenu.AppendMenu(ID.get_id("del"), "Delete ...", new_submenu)
        
        filemenu.Append(ID.get_id("quit"), "&Quit\tCtrl-Q", "Quit")
        
        editmenu = wx.Menu()

        editmenu.Append(ID.get_id("undo"), "&Undo\tCtrl+Z", "Undo")
        editmenu.Append(ID.get_id("redo"), "&Redo\tCtrl+Shift+Z", "Redo")
        editmenu.AppendSeparator()
        editmenu.Append(ID.get_id("cut"), "&Cut\tCtrl+X", "Cut")
        editmenu.Append(ID.get_id("copy"), "&Copy\tCtrl+C", "Copy")
        editmenu.Append(ID.get_id("paste"), "&Paste\tCtrl+V", "Paste")
        
        menubar = wx.MenuBar()
        menubar.Append(filemenu, "&File")
        menubar.Append(editmenu, "&Edit")
        self.SetMenuBar(menubar)
        
        self.Bind(wx.EVT_MENU, self.OnQuit, id=ID.get_id("quit"))       
        self.Bind(wx.EVT_MENU, self.OnNewCustomer, id=ID.get_id("new_customer"))
        self.Bind(wx.EVT_MENU, self.OnDelCustomer, id=ID.get_id("del_customer"))
        self.Bind(wx.EVT_MENU, self.OnNewCar, id=ID.get_id("new_customer"))
        self.Bind(wx.EVT_MENU, self.OnDelCar, id=ID.get_id("del_customer"))


    def OnSelChanged(self, event):
        item = event.GetItem()
        print item
        self.display.SetLabel(self.tree.GetItemText(item))

    def OnQuit(self, event):
        self.Close()

class Application(wx.App):
    def __init__(self):
        wx.App.__init__(self, 0)
##        self.db = Database("records.db")
##        self.frame = MainFrame(self)
    def OnInit(self):
        self.db = Database("records.db")
        self.frame = MainFrame(self)
        self.frame.Show(True)
        self.SetTopWindow(self.frame)
        return True

    #the following are Controller fuctions
    def addCar(self, c, car):
        return self.db.addCar(c, car)
    def delCar(self, c, plate):
        return self.db.delCar(c, plate)
    def store(self, c):
        return self.db.store(c)
    def deleteCustomer(self, c):
        return self.db.delete(c)
    def findCar(self, plate):
        return self.db.findCar(plate)
    def findCustomer(self, predTuple):   #predlist in from (firstName, lastName)
        preds = (("first_name", predTuple[0]),("last_name", predTuple[1]))
        return self.db.find(preds)
    def findAllCustomers(self):
        return self.db.find( () )
    

if __name__ == "__main__":                  
    Application().MainLoop()