local AceGUI = LibStub("AceGUI-3.0")
local bsk=bsk
local _G=_G
local table=table 
local pairs=pairs
local setmetatable=setmetatable
local ipairs=ipairs
local string=string
local sformat=string.format
local tostring=tostring
local type=type
local getn=getn
setfenv(1,bsk)

-- todo: switching lists should close a presently-open bid

local copy = function(t)
    local c = {}
    if not t then return c end
    for i,v in pairs(t) do c[i] = v end
    return c
end
local colorize = function(str,color)
    if str==nil or str=="" then return "" end
    if type(color) == "table" then
        color = string.format("%02x%02x%02x",255*color.r,255*color.g,255*color.b)
    end
    if color == nil then return str end
    return "|cff"..tostring(color or "ffffff")..str.."|r"
end

local CreateListSelector = function(SListPopulator)
    PersonList:RefreshRaidList()
    local pulldown = AceGUI:Create("Dropdown")
    local pull = {}
    local ltemp = 0
    local lids = LootLists:GetAllIds()
    for _,v in pairs(lids) do
        local l = LootLists:Select(v)
        pull[l:GetId()] = l:GetName()
        --local entry = {value=i,text=v.name}
        if l:GetLength() > 0 then
            pulldown:SetItemDisabled(i,true)
            if ltemp == 0 then
                ltemp = l:GetId()
            end
        end
    end
    pulldown:SetWidth(175)
    pulldown:SetList(pull)
    pulldown:SetCallback("OnValueChanged", function(_,_,value) SListPopulator:SelectList(value) end)
    if ltemp > 0 then pulldown:SetValue(ltemp); SListPopulator:SelectList(ltemp) end -- sadly, SetValue doesn't fire a OnValueChanged
    return pulldown
end

local f, right
local escapeButton = 
{
    shown = false,
    ["IsShown"] = function(self) return self.shown end,
    ["Hide"] = function(self) if f then AceGUI:Release(f); self.shown=false end end
}


SelectorListEventDispatcher =
{
    listeners = nil,
    target = nil,
    line = nil,
    ["SetTarget"] = function(self,other)
        self.target = other 
        self.target:SetCallback("OnSelectionCleared",function(...) self:OnSelectionCleared(...) end)
        self.target:SetCallback("OnSelection",function(...) self:OnSelection(...) end)
    end,
    ["RegisterListener"] = function(self,other) table.insert(self.listeners,other) end,
    ["OnSelectionCleared"] = function(self,_)
        self.line = nil
        self:Event("OnSelectionCleared")
    end,
    ["OnSelection"] = function(self,_,_,line)
        self.line = line
        self:Event("OnSelection",line)
    end,
    ["Event"] = function(self,event,arg)
        if not self.target then error("Event called with no listener...") end
        if not self.listeners then return end
        for i,v in pairs(self.listeners) do
            --bsk.print("listener")
            if type(v) == "table" then
                if v[event] then
                    v[event](v,arg)
                end
            elseif type(v) == "function" then
                v(event,arg)
            elseif type(v) ~= "nil" then -- allow nils to pass quietly
                _G.error("Bad listener - "..type(v))
            end
        end
    end,
    ["Release"] = function(self) self.listeners = {}; self.target=nil; self.line=nil end,
    ["LatestValue"] = function(self) return self.line end
}
function SelectorListEventDispatcher:new()
    local t = {}
    setmetatable(t,SelectorListEventDispatcher)
    self.__index = self
    t.listeners = {}
    return t
end

SListEventDispatch = SelectorListEventDispatcher:new()
LListEventDispatch = SelectorListEventDispatcher:new()
RListEventDispatch = SelectorListEventDispatcher:new()

local SListPopulator =
{
    filtered = false,
    widget = nil,
    data = nil,
    lref = nil,

    ["Release"] = function(self) self.filtered, self.widget, self.data, self.lref = false, nil, nil, nil end,
    ["Redraw"] = function(self)
        if self.lref == nil or self.widget == nil then return end -- don't do work if not fully initialized
        self.data = {}
        for le in self.lref:OrderedListEntryIter() do
            local disabled = not PersonList:IsActive(le:GetId()) 
            if not self.filtered or not disabled then
                local line = {value=le:GetId(),text=le:GetName(),icon=[[Interface\Glues\CharacterCreate\UI-CharacterCreate-Classes]]}
                line.iconCoords=_G.CLASS_ICON_TCOORDS[le:GetClass()]
                line.textPlain = line.text
                line.text=colorize(line.text,_G.RAID_CLASS_COLORS[le:GetClass()])
                line.disabled = disabled
                table.insert(self.data,line)
            end
        end
        self.widget:SetList(self.data)
        SListEventDispatch:Event("Redraw")
    end,
    ["SetWidget"] = function(self,w) 
        if type(w) ~= "table" or type(w.SetList) ~= "function" then
            _G.error("Bad SetWidget")
        end
        self.widget = w
    end,
    ["SetFiltered"] = function(self,value) 
        self.filtered = value
        self:Redraw()
    end,
    ["SelectList"] = function(self,value) 
        self.lref = LootLists:Select(value)
        self:Redraw()
    end,
    ["DataEvent"] = function(self)
        self:Redraw()
    end,
    ["GetMe"] = function(self)
        local me = _G.UnitName("player")
        for i,v in pairs(self.data) do
            if v.textPlain == me then
                return v
            end
        end
    end,
}

local LListPopulator =
{
    -- todo: set event receivers from the comm and for loot 
    data = {},
    widget = nil,
    ["Release"] = function(self) self.data = {}; self.widget = nil end,
    ["Redraw"]= function(self)
        self.widget:SetList(self.data)
        LListEventDispatch:Event("Redraw")
    end,
    ["SetWidget"] = function(self,w)
        if type(w) ~= "table" or type(w.SetList) ~= "function" then
            _G.error("Bad SetWidget")
        end
        self.widget = w
        if debug then
            self.data = {
                {
                    value=1, 
                    text = "|cffa335ee|Hitem:77109:4080:4009:0:0:0:0:0:85:0|h[Band of Reconstruction]|h|r",
                    link = "|cffa335ee|Hitem:77109:4080:4009:0:0:0:0:0:85:0|h[Band of Reconstruction]|h|r",
                },
                {
                    value=2,
                    text = "|cffa335ee|Hitem:19351:0:0:0:0:0:0:0:85:0|h[Maladath, Runed Blade of the Black Flight]|h|r",
                    link = "|cffa335ee|Hitem:19351:0:0:0:0:0:0:0:85:0|h[Maladath, Runed Blade of the Black Flight]|h|r"
                },
                {
                    value=3,
                    text = "|cffa335ee|Hitem:31986:0:0:0:0:0:0:0:85:0|h[Merciless Gladiator's Crossbow of the Phoenix]|h|r",
                    link = "|cffa335ee|Hitem:31986:0:0:0:0:0:0:0:85:0|h[Merciless Gladiator's Crossbow of the Phoenix]|h|r"
                },
                {
                    value=4,
                    text = "|cffa335ee|Hitem:65003:0:0:0:0:0:0:0:85:0|h[Reclaimed Ashkandi, Greatsword of the Brotherhood]|h|r",
                    link = "|cffa335ee|Hitem:65003:0:0:0:0:0:0:0:85:0|h[Reclaimed Ashkandi, Greatsword of the Brotherhood]|h|r"
                },
                {
                    value=5,
                    text = "|cffff8000|Hitem:19019:0:0:0:0:0:0:0:85:0|h[Thunderfury, Blessed Blade of the Windseeker]|h|r",
                    link = "|cffff8000|Hitem:19019:0:0:0:0:0:0:0:85:0|h[Thunderfury, Blessed Blade of the Windseeker]|h|r"
                },
            }
        end
        self:Redraw()
    end,
}

local RListPopulator =
{
    data = {},
    widget = nil,
    ["Release"] = function(self) self.data = {}; self.widget = nil end,
    ["Redraw"] = function(self)
        self.widget:SetList(self.data)
        RListEventDispatch:Event("Redraw")
    end,
    ["SetWidget"] = function(self,w)
        if type(w) ~= "table" or type(w.SetList) ~= "function" then
            _G.error("Bad SetWidget")
        end
        self.widget = w
        if debug then
            local dummydata = {}
            local tree = SListPopulator.data
            for i,v in pairs(tree) do dummydata[i] = copy(v); dummydata[i].disabled = false end
            if dummydata[2] then dummydata[2].text = dummydata[2].text .. " (roll 73)" end
            self.data = dummydata
        end
        self:Redraw()
    end,
    ["Force"] = function(self,who)
        for i,v in pairs(self.data) do
            if who.value == v.value then
                print(who.value .. " is already on the list")
                return -- no double adds please
            end
        end
        local new = self.Convert(who,72)
        table.insert(self.data,new)
        -- todo: keep this list sorted
        self:Redraw()
    end,
    ["Retract"] = function(self,who)
        for i,v in pairs(self.data) do
            if who.value == v.value then
                table.remove(self.data,i)
            end
        end
        self:Redraw()
    end,
    ["Convert"] = function(who,roll) -- convert an LE object into one suitable to put in a SelectorList
        local new = copy(who)
        new.disabled = false -- todo: should be unnessary - they can't get on the list like this
        if roll then
            new.text = new.text .. " (roll 73)"
        end
        return new
    end,
}

DataEventDispatch =
{
    -- todo: batch events
    listeners = {},
    ["DataEvent"] = function(self,_) --todo: pass along the received event
        for i,v in pairs(self.listeners) do
            if v and v["DataEvent"] then
                v:DataEvent()
            end
        end
    end,
    ["RegisterListener"] = function(self,listener)
        if not listener or not listener["DataEvent"] then
            _G.error("Bad listener")
        end
        table.insert(self.listeners,listener)
    end
}

function OnInitializeSetStaticData()
    SetChangeListener(DataEventDispatch)
    DataEventDispatch:RegisterListener(SListPopulator)
end

function CreateGUI()
    -- special registration procedure to be closable with the escape button
    --escapeButton.shown = true
    --_G["BSK_ESCAPEBUTTON"] = escapeButton
    --table.insert(_G.UISpecialFrames, "BSK_ESCAPEBUTTON")

    if f then return end -- no second gui please
    local admin = admin or true
    f = AceGUI:Create("Frame")

    f:SetCallback("OnClose",function(widget) escapeButton.shown = false; AceGUI:Release(widget); f=nil; right=nil; SListEventDispatch:Release(); LListEventDispatch:Release(); SListPopulator:Release(); RListEventDispatch:Release(); LListPopulator:Release(); RListPopulator:Release() end)
    f:SetTitle("BSK")
    f:SetLayout("Flow")
    f:SetHeight(680) 
    f:SetWidth(580)

    local left = AceGUI:Create("InlineGroup")
    left:SetLayout("List")
    left:SetWidth(175)
    left:SetFullHeight(true)
    left.alignoffset=0.25 -- hack, as per http://forums.wowace.com/showthread.php?t=17114

    right = AceGUI:Create("InlineGroup")
    right:SetLayout("Flow")
    right:SetWidth(700-175-160)
    right:SetFullHeight(true)
    right.alignoffset=0.25

    local t1 = AceGUI:Create("SelectorList")
    t1:SetNumLines(25)
    t1:SetFullWidth(true)
    t1:SetInteractive(admin)
    SListEventDispatch:SetTarget(t1)
    SListPopulator:SetWidget(t1)

    local p1 = CreateListSelector(SListPopulator)
    p1:SetFullWidth(true)

    left:AddChild(p1)
    left:AddChild(t1)

    local t2 = AceGUI:Create("SelectorList")
    t2:SetNumLines(7)
    t2:SetFullWidth(true)
    t2:EnableButtonTooltips(true)
    LListEventDispatch:SetTarget(t2)
    LListPopulator:SetWidget(t2)

    local biddingZone = AceGUI:Create("SimpleGroup")
    biddingZone:SetLayout("Flow")
    biddingZone:SetFullWidth(true)

    local alb1, alb2, alb3
    if admin then 
        alb1 = AceGUI:Create("Button")
        alb1:SetWidth(100)
        alb1:SetText("Open Bids")
        alb1.userdata = 
        {
            state = false,
            widget = alb1,
            ["Redraw"] = function(self,_) self.widget:SetDisabled(true); self.item = nil end,
            ["OnSelection"] = function(self,value) self.widget:SetDisabled(false); self.item = value end,
            ["OnSelectionCleared"] = function(self) self.widget:SetDisabled(true); self.item = nil end
        }
        alb1:SetDisabled(true)
        LListEventDispatch:RegisterListener(alb1.userdata)
        alb1:SetCallback("OnClick", 
            function(widget) 
                if widget.userdata.state then -- we were bidding when the button was pressed
                    biddingZone:ReleaseChildren()
                    widget:SetText("Open Bids")
                    RListEventDispatch:Release()
                else
                    widget:SetText("Close bids")
                    local spacer = AceGUI:Create("Label")
                    spacer:SetText(" ")
                    spacer:SetFullWidth(true)
                    local spacer2 = AceGUI:Create("Label")
                    spacer2:SetText(" ")
                    spacer2:SetFullWidth(true)

                    local label = AceGUI:Create("Label")
                    label:SetText("Bidding now open for ...")
                    local biddingOn = AceGUI:Create("InteractiveLabel")
                    biddingOn.userdata = { LListEventDispatch:LatestValue().link } 
                    biddingOn:SetText(biddingOn.userdata[1])
                    biddingOn:SetFullWidth(true)
                    biddingOn:SetCallback("OnEnter", function(widget) _G.GameTooltip:SetOwner(widget.frame,"ANCHOR_RIGHT");  _G.GameTooltip:SetHyperlink(widget.userdata[1]); _G.GameTooltip:Show() end )
                    biddingOn:SetCallback("OnLeave", function(widget) _G.GameTooltip:Hide() end )
                    local b1 = AceGUI:Create("SelectorList")
                    b1:SetNumLines(6)
                    b1:SetInteractive(admin)
                    local bidTitle = AceGUI:Create("Label")
                    bidTitle:SetText("Current bids")
                    bidTitle:SetFullWidth(true)

                    local bidRetractButton = AceGUI:Create("Button")
                    bidRetractButton:SetText("Place Bid")
                    bidRetractButton:SetWidth(100)
                    bidRetractButton:SetCallback("OnClick", function(widget) RListPopulator:Force(SListPopulator:GetMe()) end)
                    local rollButton = AceGUI:Create("Button")
                    rollButton:SetText("Offset Roll")
                    rollButton:SetWidth(100)

                    RListEventDispatch:SetTarget(b1)
                    RListPopulator:SetWidget(b1)

                    local g1
                    if admin then
                        b1.alignoffset = 0.25 -- or else g1 won't align well
                        g1 = AceGUI:Create("SimpleGroup")
                        g1.alignoffset = 0.25
                        g1:SetWidth(120)
                        g1:SetLayout("List")

                        -- todo: convoluted and repetitive - surely there's a
                        -- better way than this ...
                        adminForce = AceGUI:Create("Button")
                        if SListEventDispatch:LatestValue() then
                            adminForce:SetText(sformat("Force bid (%s)",SListEventDispatch:LatestValue().textPlain))
                            adminForce:SetDisabled(false)
                        else
                            adminForce:SetText("Force bid")
                            adminForce:SetDisabled(true)
                        end
                        adminForce:SetWidth(160)
                        adminForce:SetCallback("OnClick",function(widget) RListPopulator:Force(SListEventDispatch:LatestValue()) end)
                        adminForce.userdata = 
                        {
                            widget = adminForce,
                            ["Redraw"] = function(self,_) self.widget:SetDisabled(true); self.widget:SetText("Force bid") end,
                            ["OnSelection"] = function(self,_) self.widget:SetDisabled(false); self.widget:SetText(sformat("Force bid (%s)",SListEventDispatch:LatestValue().textPlain)) end,
                            ["OnSelectionCleared"] = function(self) self.widget:SetDisabled(true); self.widget:SetText("Force bid") end
                        }
                        SListEventDispatch:RegisterListener(adminForce.userdata)

                        adminRetract = AceGUI:Create("Button")
                        if RListEventDispatch:LatestValue() then
                            adminRetract:SetText(sformat("Retract bid (%s)",RListEventDispatch:LatestValue().textPlain))
                            adminRetract:SetDisabled(false)
                        else
                            adminRetract:SetText("Retract bid")
                            adminRetract:SetDisabled(true)
                        end
                        adminRetract:SetWidth(160)
                        adminRetract.userdata = 
                        {
                            widget = adminRetract,
                            ["Redraw"] = function(self,_) self.widget:SetDisabled(true); self.widget:SetText("Retract bid") end,
                            ["OnSelection"] = function(self,_) self.widget:SetDisabled(false); self.widget:SetText(sformat("Retract bid (%s)",RListEventDispatch:LatestValue().textPlain)) end,
                            ["OnSelectionCleared"] = function(self) self.widget:SetDisabled(true); self.widget:SetText("Retract bid") end
                        }
                        adminRetract:SetCallback("OnClick",function(widget) RListPopulator:Retract(RListEventDispatch:LatestValue()) end)
                        RListEventDispatch:RegisterListener(adminRetract.userdata)
                        adminRetract:SetDisabled(true)

                        g1:AddChildren(adminForce,adminRetract)
                    end

                    biddingZone:AddChildren(spacer,label,biddingOn,bidRetractButton,rollButton,spacer2,bidTitle,b1)
                    if admin then biddingZone:AddChildren(g1) end
                end
                widget.userdata.state = not widget.userdata.state
            end
        )

        alb2 = AceGUI:Create("Button")
        alb2:SetWidth(100)
        alb2:SetText("Assign")
        alb2.userdata =
        {
            widget = alb2,
            ["OnUpdate"] = function(self) self.widget:SetDisabled(not (self.slist.checked and self.llist.checked)) end,
        }
        alb2.userdata.slist = 
        {
            parent = alb2.userdata,
            checked = false,
            ["Redraw"] = function(self) self.checked = false; self.parent:OnUpdate() end,
            ["OnSelection"] = function(self) self.checked = true; self.parent:OnUpdate() end,
            ["OnSelectionCleared"] = function(self) self.checked = false; self.parent:OnUpdate() end,
        }
        alb2.userdata.llist = 
        {
            parent = alb2.userdata,
            checked = false,
            ["Redraw"] = function(self) self.checked = false; self.parent:OnUpdate() end,
            ["OnSelection"] = function(self) self.checked = true; self.parent:OnUpdate() end,
            ["OnSelectionCleared"] = function(self) self.checked = false; self.parent:OnUpdate() end,
        }
        SListEventDispatch:RegisterListener(alb2.userdata.slist)
        LListEventDispatch:RegisterListener(alb2.userdata.llist)

        alb3 = AceGUI:Create("Button")
        alb3:SetWidth(100)
        alb3:SetText("Suicide")
        alb3.userdata = -- TODO: holy hell, come up with a pattern or something for this ....
        {
            widget = alb3,
            ["OnUpdate"] = function(self) self.widget:SetDisabled(not (self.slist.checked and self.llist.checked)) end,
        }
        alb3.userdata.slist = 
        {
            parent = alb3.userdata,
            checked = false,
            ["Redraw"] = function(self) self.checked = false; self.parent:OnUpdate() end,
            ["OnSelection"] = function(self) self.checked = true; self.parent:OnUpdate() end,
            ["OnSelectionCleared"] = function(self) self.checked = false; self.parent:OnUpdate() end,
        }
        alb3.userdata.llist = 
        {
            parent = alb3.userdata,
            checked = false,
            ["Redraw"] = function(self) self.checked = false; self.parent:OnUpdate() end,
            ["OnSelection"] = function(self) self.checked = true; self.parent:OnUpdate() end,
            ["OnSelectionCleared"] = function(self) self.checked = false; self.parent:OnUpdate() end,
        }
        SListEventDispatch:RegisterListener(alb3.userdata.slist)
        LListEventDispatch:RegisterListener(alb3.userdata.llist)
    end

    local suicideSelected, undo
    if admin then

        suicideSelected = AceGUI:Create("Button")
        suicideSelected:SetFullWidth(true)
        suicideSelected:SetText("Suicide")
        suicideSelected:SetCallback("OnClick",
            function(_)
                local p = SListEventDispatch:LatestValue()
                local lref = SListPopulator.lref
                lref:SuicidePerson(p.value)
            end
        )

        -- use userdata + SListEventDispatch to toggle state
        suicideSelected.userdata = 
        {
            widget = suicideSelected,
            ["Redraw"] = function(self,_) self.widget:SetDisabled(true) end,
            ["OnSelection"] = function(self,_) self.widget:SetDisabled(false) end,
            ["OnSelectionCleared"] = function(self) self.widget:SetDisabled(true) end
        }
        SListEventDispatch:RegisterListener(suicideSelected.userdata)

        undo = AceGUI:Create("Button")
        undo:SetText("Undo / out of order")
        undo:SetFullWidth(true)
        undo:SetDisabled(true)
    end

    local filter = AceGUI:Create("CheckBox")
    filter:SetLabel("Only show active")
    filter:SetFullWidth(true)
    filter:SetValue(false)
    SListPopulator:SetFiltered(false)
    filter:SetCallback("OnValueChanged",function(widget,_,value) SListPopulator:SetFiltered(value) end)

    left:AddChildren(filter)
    if admin then left:AddChildren(suicideSelected,undo) end
    right:AddChildren(t2)
    if admin then right:AddChildren(alb1,alb2,alb3) end
    right:AddChildren(biddingZone)
    f:AddChildren(left,right)


end