-- Path of Building
--
-- Module: Tree Tab
-- Passive skill tree tab for the current build.
--
local launch, main = ...

local ipairs = ipairs
local t_insert = table.insert
local m_min = math.min

local TreeTabClass = common.NewClass("TreeTab", "ControlHost", function(self, build)
	self.ControlHost()

	self.build = build

	self.viewer = common.New("PassiveTreeView")

	self.specList = { }
	self.specList[1] = common.New("PassiveSpec", build)
	self:SetActiveSpec(1)

	self.anchorControls = common.New("Control", nil, 0, 0, 0, 20)
	self.controls.specSelect = common.New("DropDownControl", {"LEFT",self.anchorControls,"RIGHT"}, 0, 0, 150, 20, nil, function(sel, selVal)
		if self.specList[sel] then
			self.build.modFlag = true
			self:SetActiveSpec(sel)
		else
			self:OpenSpecManagePopup()
		end
	end)
	self.controls.specSelect.tooltipFunc = function(mode, sel, selVal)
		if mode ~= "OUT" then
			local spec = self.specList[sel]
			if spec then
				local used, ascUsed, sockets = spec:CountAllocNodes()
				main:AddTooltipLine(16, "Class: "..spec.curClassName)
				main:AddTooltipLine(16, "Ascendancy: "..spec.curAscendClassName)
				main:AddTooltipLine(16, "Points used: "..used)
				if sockets > 0 then
					main:AddTooltipLine(16, "Jewel sockets: "..sockets)
				end
				if sel ~= self.activeSpec then
					local calcFunc, calcBase = self.build.calcsTab:GetMiscCalculator()
					if calcFunc then
						local output = calcFunc({ spec = spec })
						self.build:AddStatComparesToTooltip(calcBase, output, "^7Switching to this tree will give you:")
					end
					if spec.curClassId == self.build.spec.curClassId then
						local respec = 0
						for nodeId, node in pairs(self.build.spec.allocNodes) do
							if node.type ~= "classStart" and node.type ~= "ascendClassStart" and not spec.allocNodes[nodeId] then
								if node.ascendancyName then
									respec = respec + 5
								else
									respec = respec + 1
								end
							end
						end
						if respec > 0 then
							main:AddTooltipLine(16, "^7Switching to this tree requires "..respec.." refund points.")
						end
					end
				end
			end
		end
	end
	self.controls.reset = common.New("ButtonControl", {"LEFT",self.controls.specSelect,"RIGHT"}, 8, 0, 60, 20, "Reset", function()
		main:OpenConfirmPopup("Reset Tree", "Are you sure you want to reset your passive tree?", "Reset", function()
			self.build.spec:ResetNodes()
			self.build.spec:AddUndoState()
			self.build.buildFlag = true
		end)
	end)
	self.controls.import = common.New("ButtonControl", {"LEFT",self.controls.reset,"RIGHT"}, 8, 0, 90, 20, "Import Tree", function()
		self:OpenImportPopup()
	end)
	self.controls.export = common.New("ButtonControl", {"LEFT",self.controls.import,"RIGHT"}, 8, 0, 90, 20, "Export Tree", function()
		self:OpenExportPopup()
	end)
	self.controls.treeSearch = common.New("EditControl", {"LEFT",self.controls.export,"RIGHT"}, 8, 0, 300, 20, "", "Search", "%c%(%)", 100, function(buf)
		self.viewer.searchStr = buf
	end)
	self.controls.treeHeatMap = common.New("CheckBoxControl", {"LEFT",self.controls.treeSearch,"RIGHT"}, 130, 0, 20, "Show Node Power:", function(state)	
		self.viewer.showHeatMap = state
	end)
	self.controls.treeHeatMap.tooltip = function()
		local offCol, defCol = main.nodePowerTheme:match("(%a+)/(%a+)")
		return "When enabled, an estimate of the offensive and defensive strength of\neach unallocated passive is calculated and displayed visually.\nOffensive power shows as "..offCol:lower()..", defensive power as "..defCol:lower().."."
	end
end)

function TreeTabClass:Draw(viewPort, inputEvents)
	self.anchorControls.x = viewPort.x + 4
	self.anchorControls.y = viewPort.y + viewPort.height - 24

	for id, event in ipairs(inputEvents) do
		if event.type == "KeyDown" then
			if event.key == "z" and IsKeyDown("CTRL") then
				self.build.spec:Undo()
				self.build.buildFlag = true
				inputEvents[id] = nil
			elseif event.key == "y" and IsKeyDown("CTRL") then
				self.build.spec:Redo()
				self.build.buildFlag = true
				inputEvents[id] = nil
			end
		end
	end
	self:ProcessControlsInput(inputEvents, viewPort)

	local treeViewPort = { x = viewPort.x, y = viewPort.y, width = viewPort.width, height = viewPort.height - 32 }
	self.viewer:Draw(self.build, treeViewPort, inputEvents)

	self.controls.specSelect.sel = self.activeSpec
	wipeTable(self.controls.specSelect.list)
	for id, spec in ipairs(self.specList) do
		t_insert(self.controls.specSelect.list, spec.title or "Default")
	end
	t_insert(self.controls.specSelect.list, "Manage trees...")
	if not self.controls.treeSearch.hasFocus then
		self.controls.treeSearch:SetText(self.viewer.searchStr)
	end
	self.controls.treeHeatMap.state = self.viewer.showHeatMap

	SetDrawLayer(1)

	SetDrawColor(0.05, 0.05, 0.05)
	DrawImage(nil, viewPort.x, viewPort.y + viewPort.height - 28, viewPort.width, 28)
	SetDrawColor(0.85, 0.85, 0.85)
	DrawImage(nil, viewPort.x, viewPort.y + viewPort.height - 32, viewPort.width, 4)

	self:DrawControls(viewPort)
end

function TreeTabClass:Load(xml, dbFileName)
	self.specList = { }
	if xml.elem == "Spec" then
		-- Import single spec from old build
		self.specList[1] = common.New("PassiveSpec", self.build)
		self.specList[1]:Load(xml, dbFileName)
		self.activeSpec = 1
		self.build.spec = self.specList[1]
		return
	end
	for _, node in pairs(xml) do
		if type(node) == "table" then
			if node.elem == "Spec" then
				local newSpec = common.New("PassiveSpec", self.build)
				newSpec:Load(node, dbFileName)
				t_insert(self.specList, newSpec)
			end
		end
	end
	if not self.specList[1] then
		self.specList[1] = common.New("PassiveSpec", self.build)
	end
	self:SetActiveSpec(tonumber(xml.attrib.activeSpec) or 1)
end

function TreeTabClass:PostLoad()
	for _, spec in ipairs(self.specList) do
		spec:BuildAllDependsAndPaths()
	end
end

function TreeTabClass:Save(xml)
	xml.attrib = { 
		activeSpec = tostring(self.activeSpec)
	}
	for specId, spec in ipairs(self.specList) do
		if specId == self.activeSpec then
			-- Update this spec's jewels from the socket slots
			for _, slot in pairs(self.build.itemsTab.slots) do
				if slot.nodeId then
					spec.jewels[slot.nodeId] = slot.selItemId
				end
			end
		end
		local child = {
			elem = "Spec"
		}
		spec:Save(child)
		t_insert(xml, child)
	end
	self.modFlag = false
end

function TreeTabClass:SetActiveSpec(specId)
	local prevSpec = self.build.spec
	self.activeSpec = m_min(specId, #self.specList)
	local curSpec = self.specList[self.activeSpec]
	self.build.spec = curSpec
	self.build.buildFlag = true
	for _, slot in pairs(self.build.itemsTab.slots) do
		if slot.nodeId then
			if prevSpec then
				-- Update the previous spec's jewel for this slot
				prevSpec.jewels[slot.nodeId] = slot.selItemId
			end
			if curSpec.jewels[slot.nodeId] then
				-- Socket the jewel for the new spec
				slot.selItemId = curSpec.jewels[slot.nodeId]
			end
		end
	end
	if self.build.itemsTab.orderList[1] then
		-- Update item slots if items have been loaded already
		self.build.itemsTab:PopulateSlots()
	end
end

function TreeTabClass:OpenSpecManagePopup()
	main:OpenPopup(370, 290, "Manage Passive Trees", {
		common.New("PassiveSpecList", nil, 0, 50, 350, 200, self),
		common.New("ButtonControl", nil, 0, 260, 90, 20, "Done", function()
			main:ClosePopup()
		end),
	})
end

function TreeTabClass:OpenImportPopup()
	local controls = { }
	local function decodeTreeLink(treeLink)
		local errMsg = self.build.spec:DecodeURL(treeLink)
		if errMsg then
			controls.msg.label = "^1"..errMsg
		else
			self.build.spec:AddUndoState()
			self.build.buildFlag = true
			main:ClosePopup()
		end
	end
	controls.editLabel = common.New("LabelControl", nil, 0, 20, 0, 16, "Enter passive tree link:")
	controls.edit = common.New("EditControl", nil, 0, 40, 350, 18, "", nil, nil, nil, function(buf)
		controls.msg.label = ""
	end)
	controls.msg = common.New("LabelControl", nil, 0, 58, 0, 16, "")
	controls.import = common.New("ButtonControl", nil, -45, 80, 80, 20, "Import", function()
		local treeLink = controls.edit.buf
		if #treeLink == 0 then
			return
		end
		if treeLink:match("poeurl%.com/") then
			controls.import.enabled = false
			controls.msg.label = "Resolving PoEURL link..."
			local id = LaunchSubScript([[
				local treeLink = ...
				local curl = require("lcurl.safe")
				local easy = curl.easy()
				easy:setopt_url(treeLink)
				easy:setopt_writefunction(function(data)
					return true
				end)
				easy:perform()
				local redirect = easy:getinfo(curl.INFO_REDIRECT_URL)
				easy:close()
				if not redirect or redirect:match("poeurl%.com/") then
					return nil, "Failed to resolve PoEURL link"
				end
				return redirect
			]], "", "", treeLink)
			if id then
				launch:RegisterSubScript(id, function(treeLink, errMsg)
					if errMsg then
						controls.msg.label = "^1"..errMsg
						controls.import.enabled = true
					else
						decodeTreeLink(treeLink)
					end
				end)
			end
		else
			decodeTreeLink(treeLink)
		end
	end)
	controls.cancel = common.New("ButtonControl", nil, 45, 80, 80, 20, "Cancel", function()
		main:ClosePopup()
	end)
	main:OpenPopup(380, 110, "Import Tree", controls, "import", "edit")
end

function TreeTabClass:OpenExportPopup()
	local treeLink = self.build.spec:EncodeURL("https://www.pathofexile.com/passive-skill-tree/")
	local popup
	local controls = { }
	controls.label = common.New("LabelControl", nil, 0, 20, 0, 16, "Passive tree link:")
	controls.edit = common.New("EditControl", nil, 0, 40, 350, 18, treeLink, nil, "%Z")
	controls.shrink = common.New("ButtonControl", nil, -90, 70, 140, 20, "Shrink with PoEURL", function()
		controls.shrink.enabled = false
		controls.shrink.label = "Shrinking..."
		launch:DownloadPage("http://poeurl.com/shrink.php?url="..treeLink, function(page, errMsg)
			controls.shrink.label = "Done"
			if errMsg or not page:match("%S") then
				main:OpenMessagePopup("PoEURL Shortener", "Failed to get PoEURL link. Try again later.")
			else
				treeLink = "http://poeurl.com/"..page
				controls.edit:SetText(treeLink)
				popup:SelectControl(controls.edit)
			end
		end)
	end)
	controls.copy = common.New("ButtonControl", nil, 30, 70, 80, 20, "Copy", function()
		Copy(treeLink)
	end)
	controls.done = common.New("ButtonControl", nil, 120, 70, 80, 20, "Done", function()
		main:ClosePopup()
	end)
	popup = main:OpenPopup(380, 100, "Export Tree", controls, "done", "edit")
end