from direct.task.Task import Task
import math
from panda3d.core import BillboardEffect, Vec3, Point3, PGButton, VBase4
from panda3d.core import DepthWriteAttrib

from toontown.chat.ChatBalloon import ChatBalloon
from toontown.nametag import NametagGlobals
from toontown.nametag.Nametag import Nametag
from toontown.toontowngui.Clickable3d import Clickable3d


class Nametag3d(Nametag, Clickable3d):
    SCALING_MIN_DISTANCE = 1
    SCALING_MAX_DISTANCE = 200
    SCALING_FACTOR = 0.085

    def __init__(self):
        Nametag.__init__(self)
        Clickable3d.__init__(self, 'Nametag3d')

        self.distance = 0

        self.billboardOffset = 3
        self.doBillboardEffect()

    def destroy(self):
        self.ignoreAll()

        Nametag.destroy(self)
        Clickable3d.destroy(self)

    def getUniqueName(self):
        return 'Nametag3d-' + str(id(self))

    def getChatBalloonModel(self):
        return NametagGlobals.chatBalloon3dModel

    def getChatBalloonWidth(self):
        return NametagGlobals.chatBalloon3dWidth

    def getChatBalloonHeight(self):
        return NametagGlobals.chatBalloon3dHeight

    def setBillboardOffset(self, billboardOffset):
        self.billboardOffset = billboardOffset
        self.doBillboardEffect()

    def getBillboardOffset(self):
        return self.billboardOffset

    def doBillboardEffect(self):
        billboardEffect = BillboardEffect.make(
            Vec3(0, 0, 1), True, False, self.billboardOffset, base.cam,
            Point3(0, 0, 0))
        self.contents.setEffect(billboardEffect)

    def updateClickRegion(self):
        if self.chatBalloon is not None:
            left = self.chatBalloon.center[0] - (self.chatBalloon.width/2)
            right = left + self.chatBalloon.width

            # Calculate the bottom of the region based on constants.
            # 2.4 is the padded height of a single-line message:
            bottom = NametagGlobals.chatBalloon3dHeight - 2.4
            top = bottom + self.chatBalloon.height

            self.setClickRegionFrame(left, right, bottom, top)
        elif self.panel is not None:
            centerX = (self.textNode.getLeft()+self.textNode.getRight()) / 2.0
            centerY = (self.textNode.getBottom()+self.textNode.getTop()) / 2.0

            left = centerX - (self.panelWidth/2.0)
            right = centerX + (self.panelWidth/2.0)
            bottom = centerY - (self.panelHeight/2.0)
            top = centerY + (self.panelHeight/2.0)

            self.setClickRegionFrame(left, right, bottom, top)

    def isClickable(self):
        if self.getChatText() and self.hasChatButton():
            return True
        return NametagGlobals.wantActiveNametags and Clickable3d.isClickable(self)

    def setClickState(self, clickState):
        if self.isClickable():
            self.applyClickState(clickState)
        else:
            self.applyClickState(PGButton.SInactive)

        Clickable3d.setClickState(self, clickState)

    def enterDepressed(self):
        if self.isClickable():
            base.playSfx(NametagGlobals.clickSound)

    def enterRollover(self):
        if self.isClickable() and (self.lastClickState != PGButton.SDepressed):
            base.playSfx(NametagGlobals.rolloverSound)

    def update(self):
        self.contents.node().removeAllChildren()

        Nametag.update(self)

    def tick(self, task):
        distance = self.contents.getPos(base.cam).length()

        extraScale = 1.0
        if distance < self.SCALING_MIN_DISTANCE:
            distance = self.SCALING_MIN_DISTANCE
        elif distance > self.SCALING_MAX_DISTANCE:
            extraScale = 1.4
            distance = self.SCALING_MAX_DISTANCE

        if distance != self.distance:
            self.contents.setScale(math.sqrt(distance) * self.SCALING_FACTOR * extraScale)
            self.distance = distance

        self.updateClickRegion()

        return Task.cont

    def drawChatBalloon(self, model, modelWidth, modelHeight):
        if self.chatFont is None:
            # We can't draw this without a font.
            return

        if self.isClickable():
            foreground, background = self.chatColor[self.clickState]
        else:
            foreground, background = self.chatColor[PGButton.SInactive]
        if self.chatType == NametagGlobals.SPEEDCHAT:
            background = self.speedChatColor
        if background[3] > self.CHAT_BALLOON_ALPHA:
            background = VBase4(
                background[0], background[1], background[2],
                self.CHAT_BALLOON_ALPHA)
        self.chatBalloon = ChatBalloon(
            model, modelWidth, modelHeight, self.chatTextNode,
            foreground=foreground, background=background,
            reversed=self.chatReversed,
            button=self.chatButton[self.clickState])
        self.chatBalloon.reparentTo(self.contents)

    def drawNametag(self):
        if self.font is None:
            # We can't draw this without a font.
            return

        # Attach the icon:
        if self.icon is not None:
            self.contents.attachNewNode(self.icon)

        if self.isClickable():
            foreground, background = self.nametagColor[self.clickState]
        else:
            foreground, background = self.nametagColor[PGButton.SInactive]

        # Set the color of the TextNode:
        self.textNode.setTextColor(foreground)

        # Attach the TextNode:
        textNodePath = self.contents.attachNewNode(self.textNode, 1)
        textNodePath.setTransparency(foreground[3] < 1)
        textNodePath.setAttrib(DepthWriteAttrib.make(0))
        textNodePath.setY(self.TEXT_Y_OFFSET)

        # Attach a panel behind the TextNode:
        self.panel = NametagGlobals.cardModel.copyTo(self.contents, 0)
        self.panel.setColor(background)
        self.panel.setTransparency(background[3] < 1)

        # Reposition the panel:
        x = (self.textNode.getLeft()+self.textNode.getRight()) / 2.0
        z = (self.textNode.getBottom()+self.textNode.getTop()) / 2.0
        self.panel.setPos(x, 0, z)

        # Resize the panel:
        self.panelWidth = self.textNode.getWidth() + self.PANEL_X_PADDING
        self.panelHeight = self.textNode.getHeight() + self.PANEL_Z_PADDING
        self.panel.setScale(self.panelWidth, 1, self.panelHeight)