import direct.directbase.DirectStart
from direct.showbase.DirectObject       import DirectObject
from direct.gui.OnscreenText            import OnscreenText
from direct.gui.DirectGui               import *
from pandac.PandaModules                import *


### client logic
# connect to patcher to see if update is available
# connect to login server
# send login credentials




class GameClient(DirectObject):
    def __init__(self):
        base.setBackgroundColor( 0, 0, 0 )
        # sets the background color to black because the
        # default grey color bugs me for some reason
#### HERE ####
    def hide(self):

        self.loginScreen()
        # draws the login screen

        self.usernameBox['focus'] = 1
        # sets the cursor to the username field by default

        self.accept('tab', self.cycleLoginBox)
        # enables the user to cycle through the text fields with the tab key
        # this is a standard feature on most login forms

        self.accept('enter', self.attemptLogin)
        # submits the login form, or you can just click the Login button

    def loginScreen(self):
        # creates a basic login screen that asks for a username/password

        boxloc = Vec3(0.0, 0.0, 0.0)
        # all items in the login form will have a position relative to this
        # this makes it easier to shift the entire form around once we have
        # some graphics to display with it without having to change the
        # positioning of every form element

        # p is the position of the form element relative to the boxloc
        # coordinates set above it is changed for every form element
        p = boxloc + Vec3(-0.5, 0, 0.0)
        self.textObject = OnscreenText(text = "Username:", pos = p, scale = 0.07,fg=(1, 1, 1, 1),align=TextNode.ALeft)
        # "Username: " text that appears beside the username box

        p = boxloc + Vec3(-0.1, 0.0, 0.0)
        self.usernameBox = DirectEntry(text = "" , pos = p, scale=.05, initialText="", numLines = 1)
        # Username textbox where you type in your username

        p = boxloc + Vec3(-0.5, -0.1, 0.0)
        self.textObject = OnscreenText(text = "Password:", pos = p, scale = 0.07,fg=(1, 1, 1, 1),align=TextNode.ALeft)
        # "Password: " text that appears beside the password box

        p = boxloc + Vec3(-0.1, 0, -0.1)
        self.passwordBox = DirectEntry(text = "" , pos = p, scale=.05, initialText="", numLines = 1, obscured = 1)
        # Password textbox where you type in your password
        # Note - obscured = 1 denotes that all text entered will be replaced
        # with a * like a standard password box

        p = boxloc + Vec3(0, 0, -0.2)
        self.loginButton = DirectButton(text = ("Login", "Login", "Login", "Login"), pos = p, scale = 0.075, command=self.attemptLogin)
        # The 'Login' button that will trigger the attemptLogin function
        # when clicked

        p = boxloc + Vec3(-0.5, -0.4, 0)
        self.statusText = OnscreenText(text = "", pos = p, scale = 0.05, fg = (1, 0, 0, 1), align=TextNode.ALeft)
        # A simple text object that you can display an error/status messages
        # to the user

    def updateStatus(self, statustext):
        self.statusText.setText(statustext)
        # all this does is change the status text.

    def attemptLogin(self):
        # checks to make sure the user inputed a username and password:
        #       if they didn't it will spit out an error message
        #       if they did, it will try to connect to the login server
        #               (under construction)

        if(self.usernameBox.get() == ""):
            if(self.passwordBox.get() == ""):
                self.updateStatus("ERROR: You must enter a username and password before logging in.")
            else:
                self.updateStatus("ERROR: You must specify a username")
            self.passwordBox['focus'] = 0
            self.usernameBox['focus'] = 1

        elif(self.passwordBox.get() == ""):
            self.updateStatus("ERROR: You must enter a password")
            self.usernameBox['focus'] = 0
            self.passwordBox['focus'] = 1

        else:
            self.updateStatus("Attempting to login...")
            print "Attempting to connect to Server with credentials: (" + self.usernameBox.get() + ", " + self.passwordBox.get() + ")"
            #
            # this is where the networking code will get put in
            self.loginScreen.hide()

    def cycleLoginBox(self):
        # function is triggered by the tab key so you can cycle between
        # the two input fields like on most login screens

        # IMPORTANT: When you change the focus to one of the text boxes,
        # you have to unset the focus on the other textbox.  If you do not
        # do this Panda seems to get confused.
        if(self.passwordBox['focus'] == 1):
            self.passwordBox['focus'] = 0
            self.usernameBox['focus'] = 1
        elif(self.usernameBox['focus'] == 1):
            self.usernameBox['focus'] = 0
            self.passwordBox['focus'] = 1



Client = GameClient()
run()