#===============================================================================
# Copyright (C) 2010 Diego Duclos
#
# This file is part of pyfa.
#
# pyfa is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# pyfa is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with pyfa.  If not, see <http://www.gnu.org/licenses/>.
#===============================================================================

import wx
import service
import gui.display as d
import gui.marketBrowser as mb
from gui.builtinViewColumns.state import State
from gui.contextMenu import ContextMenu
import globalEvents as GE

class CargoViewDrop(wx.PyDropTarget):
        def __init__(self, dropFn):
            wx.PyDropTarget.__init__(self)
            self.dropFn = dropFn
            # this is really transferring an EVE itemID
            self.dropData = wx.PyTextDataObject()
            self.SetDataObject(self.dropData)

        def OnData(self, x, y, t):
            if self.GetData():
                data = self.dropData.GetText().split(':')
                self.dropFn(x, y, data)
            return t

#  @todo: Was copied form another class and modified. Look through entire file, refine
class CargoView(d.Display):
    DEFAULT_COLS = ["Base Icon",
                    "Base Name",
                    "attr:volume",
                    "Price"]

    def __init__(self, parent):
        d.Display.__init__(self, parent, style=wx.LC_SINGLE_SEL | wx.BORDER_NONE)

        self.lastFitId = None

        self.mainFrame.Bind(GE.FIT_CHANGED, self.fitChanged)
        self.Bind(wx.EVT_LEFT_DCLICK, self.removeItem)
        self.Bind(wx.EVT_KEY_UP, self.kbEvent)

        self.SetDropTarget(CargoViewDrop(self.handleListDrag))
        self.Bind(wx.EVT_LIST_BEGIN_DRAG, self.startDrag)

        if "__WXGTK__" in  wx.PlatformInfo:
            self.Bind(wx.EVT_RIGHT_UP, self.scheduleMenu)
        else:
            self.Bind(wx.EVT_RIGHT_DOWN, self.scheduleMenu)

    def handleListDrag(self, x, y, data):
        '''
        Handles dragging of items from various pyfa displays which support it

        data is list with two indices:
            data[0] is hard-coded str of originating source
            data[1] is typeID or index of data we want to manipulate
        '''

        if data[0] == "fitting":
            self.swapModule(x, y, int(data[1]))
        elif data[0] == "market":
            sFit = service.Fit.getInstance()
            sFit.addCargo(self.mainFrame.getActiveFit(), int(data[1]), 1)
            wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.mainFrame.getActiveFit()))

    def startDrag(self, event):
        row = event.GetIndex()

        if row != -1:
            data = wx.PyTextDataObject()
            data.SetText("cargo:"+str(row))

            dropSource = wx.DropSource(self)
            dropSource.SetData(data)
            res = dropSource.DoDragDrop()

    def kbEvent(self,event):
        keycode = event.GetKeyCode()
        if keycode == wx.WXK_DELETE or keycode == wx.WXK_NUMPAD_DELETE:
            fitID = self.mainFrame.getActiveFit()
            sFit = service.Fit.getInstance()
            row = self.GetFirstSelected()
            if row != -1:
                sFit.removeCargo(fitID, self.GetItemData(row))
                wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=fitID))
        event.Skip()

    def swapModule(self, x, y, modIdx):
        '''Swap a module from fitting window with cargo'''
        sFit = service.Fit.getInstance()
        fit = sFit.getFit(self.mainFrame.getActiveFit())
        dstRow, _ = self.HitTest((x, y))
        mstate = wx.GetMouseState()

        # Gather module information to get position
        module = fit.modules[modIdx]

        if dstRow != -1: # we're swapping with cargo
            if mstate.CmdDown(): # if copying, append to cargo
                sFit.addCargo(self.mainFrame.getActiveFit(), module.item.ID)
            else: # else, move / swap
                sFit.moveCargoToModule(self.mainFrame.getActiveFit(), module.position, dstRow)
        else: # dragging to blank spot, append
            sFit.addCargo(self.mainFrame.getActiveFit(), module.item.ID)

            if not mstate.CmdDown(): # if not copying, remove module
               sFit.removeModule(self.mainFrame.getActiveFit(), module.position)

        wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=self.mainFrame.getActiveFit()))

    def fitChanged(self, event):
        sFit = service.Fit.getInstance()
        fit = sFit.getFit(event.fitID)

        self.Parent.Parent.DisablePage(self, not fit or fit.isStructure)

        #Clear list and get out if current fitId is None
        if event.fitID is None and self.lastFitId is not None:
            self.DeleteAllItems()
            self.lastFitId = None
            event.Skip()
            return

        self.original = fit.cargo if fit is not None else None
        self.cargo = stuff = fit.cargo if fit is not None else None
        if stuff is not None: stuff.sort(key=lambda cargo: cargo.itemID)

        if event.fitID != self.lastFitId:
            self.lastFitId = event.fitID

            item = self.GetNextItem(-1, wx.LIST_NEXT_ALL, wx.LIST_STATE_DONTCARE)

            if item != -1:
                self.EnsureVisible(item)

            self.deselectItems()

        self.populate(stuff)
        self.refresh(stuff)
        event.Skip()

    def removeItem(self, event):
        row, _ = self.HitTest(event.Position)
        if row != -1:
            col = self.getColumn(event.Position)
            if col != self.getColIndex(State):
                fitID = self.mainFrame.getActiveFit()
                sFit = service.Fit.getInstance()
                cargo = self.cargo[self.GetItemData(row)]
                sFit.removeCargo(fitID, self.original.index(cargo))
                wx.PostEvent(self.mainFrame, GE.FitChanged(fitID=fitID))

    def scheduleMenu(self, event):
        event.Skip()
        if self.getColumn(event.Position) != self.getColIndex(State):
            wx.CallAfter(self.spawnMenu)

    def spawnMenu(self):
        sel = self.GetFirstSelected()
        if sel != -1:
            sFit = service.Fit.getInstance()
            fit = sFit.getFit(self.mainFrame.getActiveFit())
            cargo = fit.cargo[sel]

            sMkt = service.Market.getInstance()
            sourceContext = "cargoItem"
            itemContext = sMkt.getCategoryByItem(cargo.item).name

            menu = ContextMenu.getMenu((cargo,), (sourceContext, itemContext))
            self.PopupMenu(menu)
