local E, L, V, P, G = unpack(select(2, ...))
local UF = E:GetModule("UnitFrames")
local S = E:GetModule("Skins")

local _G = _G
local format = format

local CreateFrame = CreateFrame
local SetCVar = SetCVar
local PlaySoundFile = PlaySoundFile
local ReloadUI = ReloadUI
local UIFrameFadeOut = UIFrameFadeOut
local ChatFrame_AddMessageGroup = ChatFrame_AddMessageGroup
local ChatFrame_RemoveAllMessageGroups = ChatFrame_RemoveAllMessageGroups
local ChatFrame_AddChannel = ChatFrame_AddChannel
local ChatFrame_RemoveChannel = ChatFrame_RemoveChannel
local ChangeChatColor = ChangeChatColor
local ToggleChatColorNamesByClassGroup = ToggleChatColorNamesByClassGroup
local FCF_ResetChatWindows = FCF_ResetChatWindows
local FCF_SetLocked = FCF_SetLocked
local FCF_DockFrame, FCF_UnDockFrame = FCF_DockFrame, FCF_UnDockFrame
local FCF_OpenNewWindow = FCF_OpenNewWindow
local FCF_SavePositionAndDimensions = FCF_SavePositionAndDimensions
local FCF_SetWindowName = FCF_SetWindowName
local FCF_StopDragging = FCF_StopDragging
local FCF_SetChatWindowFontSize = FCF_SetChatWindowFontSize

local CLASS, CONTINUE, PREVIOUS = CLASS, CONTINUE, PREVIOUS
local NUM_CHAT_WINDOWS = NUM_CHAT_WINDOWS
local LOOT, GENERAL, TRADE = LOOT, GENERAL, TRADE
local GUILD_EVENT_LOG = GUILD_EVENT_LOG
local STAT_CATEGORY_MELEE = STAT_CATEGORY_MELEE
local STAT_CATEGORY_RANGED = STAT_CATEGORY_RANGED

local CURRENT_PAGE = 0
local MAX_PAGE = 8

local function SetupChat(noDisplayMsg)
	FCF_ResetChatWindows()
	FCF_SetLocked(ChatFrame1, 1)
	FCF_DockFrame(ChatFrame2)
	FCF_SetLocked(ChatFrame2, 1)

	FCF_OpenNewWindow(LOOT)
	FCF_UnDockFrame(ChatFrame3)
	FCF_SetLocked(ChatFrame3, 1)
	ChatFrame3:Show()

	for i = 1, NUM_CHAT_WINDOWS do
		local frame = _G[format("ChatFrame%s", i)]

		-- move general bottom left
		if i == 1 then
			frame:ClearAllPoints()
			frame:Point("BOTTOMLEFT", LeftChatToggleButton, "TOPLEFT", 1, 3)
		elseif i == 3 then
			frame:ClearAllPoints()
			frame:Point("BOTTOMLEFT", RightChatDataPanel, "TOPLEFT", 1, 3)
		end

		FCF_SavePositionAndDimensions(frame)
		FCF_StopDragging(frame)
		FCF_SetChatWindowFontSize(nil, frame, 12)

		-- rename windows general because moved to chat #3
		if i == 1 then
			FCF_SetWindowName(frame, GENERAL)
		elseif i == 2 then
			FCF_SetWindowName(frame, GUILD_EVENT_LOG)
		elseif i == 3 then
			FCF_SetWindowName(frame, LOOT.." / "..TRADE)
		end
	end

	-- keys taken from `ChatTypeGroup` but doesnt add: 'OPENING', 'TRADESKILLS', 'PET_INFO', 'COMBAT_MISC_INFO', 'PET_BATTLE_COMBAT_LOG', 'PET_BATTLE_INFO', 'TARGETICONS'
	local chatGroup = {"SYSTEM", "CHANNEL", "SAY", "EMOTE", "YELL", "WHISPER", "PARTY", "PARTY_LEADER", "RAID", "RAID_LEADER", "RAID_WARNING", "INSTANCE_CHAT", "INSTANCE_CHAT_LEADER", "GUILD", "OFFICER", "MONSTER_SAY", "MONSTER_YELL", "MONSTER_EMOTE", "MONSTER_WHISPER", "MONSTER_BOSS_EMOTE", "MONSTER_BOSS_WHISPER", "ERRORS", "AFK", "DND", "IGNORED", "BG_HORDE", "BG_ALLIANCE", "BG_NEUTRAL", "ACHIEVEMENT", "GUILD_ACHIEVEMENT", "BN_WHISPER", "BN_CONVERSATION", "BN_INLINE_TOAST_ALERT"}
	ChatFrame_RemoveAllMessageGroups(ChatFrame1)
	for _, v in ipairs(chatGroup) do
		ChatFrame_AddMessageGroup(ChatFrame1, v)
	end

	-- keys taken from `ChatTypeGroup` which weren't added above to ChatFrame1
	chatGroup = {"COMBAT_XP_GAIN", "COMBAT_HONOR_GAIN", "COMBAT_FACTION_CHANGE", "COMBAT_GUILD_XP_GAIN", "SKILL", "LOOT", "CURRENCY", "MONEY"}
	ChatFrame_RemoveAllMessageGroups(ChatFrame3)
	for _, v in ipairs(chatGroup) do
		ChatFrame_AddMessageGroup(ChatFrame3, v)
	end

	ChatFrame_AddChannel(ChatFrame1, GENERAL)
	ChatFrame_RemoveChannel(ChatFrame1, TRADE)
	ChatFrame_AddChannel(ChatFrame3, TRADE)

	-- set the chat groups names in class color to enabled for all chat groups which players names appear
	chatGroup = {"SAY", "EMOTE", "YELL", "WHISPER", "PARTY", "PARTY_LEADER", "RAID", "RAID_LEADER", "RAID_WARNING", "INSTANCE_CHAT", "INSTANCE_CHAT_LEADER", "GUILD", "OFFICER", "ACHIEVEMENT", "GUILD_ACHIEVEMENT"}
	for i = 1, MAX_WOW_CHAT_CHANNELS do
		tinsert(chatGroup, "CHANNEL"..i)
	end
	for _, v in ipairs(chatGroup) do
		ToggleChatColorNamesByClassGroup(true, v)
	end

	-- Adjust Chat Colors
	ChangeChatColor("CHANNEL1", 195/255, 230/255, 232/255) -- General
	ChangeChatColor("CHANNEL2", 232/255, 158/255, 121/255) -- Trade
	ChangeChatColor("CHANNEL3", 232/255, 228/255, 121/255) -- Local Defense

	if E.Chat then
		E.Chat:PositionChat(true)
		if E.db.RightChatPanelFaded then
			RightChatToggleButton:Click()
		end

		if E.db.LeftChatPanelFaded then
			LeftChatToggleButton:Click()
		end
	end

	if InstallStepComplete and not noDisplayMsg then
		InstallStepComplete.message = L["Chat Set"]
		InstallStepComplete:Show()
	end
end

local function SetupCVars(noDisplayMsg)
	SetCVar("alternateResourceText", 1)
	SetCVar("statusTextDisplay", "BOTH")
	SetCVar("mapQuestDifficulty", 1)
	SetCVar("ShowClassColorInNameplate", 1)
	SetCVar("screenshotQuality", 10)
	SetCVar("chatMouseScroll", 1)
	SetCVar("chatStyle", "classic")
	SetCVar("wholeChatWindowClickable", 0)
	SetCVar("ConversationMode", "inline")
	SetCVar("showTutorials", 0)
	SetCVar("UberTooltips", 1)
	SetCVar("threatWarning", 3)
	SetCVar("alwaysShowActionBars", 1)
	SetCVar("lockActionBars", 1)
	SetCVar("spamFilter", 0)

	InterfaceOptionsActionBarsPanelPickupActionKeyDropDown:SetValue("SHIFT")
	InterfaceOptionsActionBarsPanelPickupActionKeyDropDown:RefreshValue()

	if InstallStepComplete and not noDisplayMsg then
		InstallStepComplete.message = L["CVars Set"]
		InstallStepComplete:Show()
	end
end

function E:GetColor(r, g, b, a)
	return {r = r, g = g, b = b, a = a}
end

function E:SetupTheme(theme, noDisplayMsg)
	E.private.theme = theme

	local classColor

	--Set colors
	if theme == "classic" then
		E.db.general.bordercolor = (E.PixelMode and E:GetColor(0, 0, 0) or E:GetColor(0.31, 0.31, 0.31))
		E.db.general.backdropcolor = E:GetColor(0.1, 0.1, 0.1)
		E.db.general.backdropfadecolor = E:GetColor(0.054, 0.054, 0.054, 0.69)
		E.db.unitframe.colors.borderColor = (E.PixelMode and E:GetColor(0, 0, 0) or E:GetColor(0.31, 0.31, 0.31))
		E.db.unitframe.colors.healthclass = false
		E.db.unitframe.colors.health = E:GetColor(0.31, 0.31, 0.31)
		E.db.unitframe.colors.auraBarBuff = E:GetColor(0.31, 0.31, 0.31)
		E.db.unitframe.colors.castColor = E:GetColor(0.31, 0.31, 0.31)
		E.db.unitframe.colors.castClassColor = false
		E.db.chat.tabSelectorColor = {r = 0.09, g = 0.51, b = 0.82}
	elseif theme == "class" then
		classColor = E:ClassColor(E.myclass, true)

		E.db.general.bordercolor = (E.PixelMode and E:GetColor(0, 0, 0) or E:GetColor(0.31, 0.31, 0.31))
		E.db.general.backdropcolor = E:GetColor(0.1, 0.1, 0.1)
		E.db.general.backdropfadecolor = E:GetColor(0.06, 0.06, 0.06, 0.8)
		E.db.unitframe.colors.borderColor = (E.PixelMode and E:GetColor(0, 0, 0) or E:GetColor(0.31, 0.31, 0.31))
		E.db.unitframe.colors.auraBarBuff = E:GetColor(classColor.r, classColor.g, classColor.b)
		E.db.unitframe.colors.healthclass = true
		E.db.unitframe.colors.castClassColor = true
		E.db.chat.tabSelectorColor = E:GetColor(classColor.r, classColor.g, classColor.b)
	else
		E.db.general.bordercolor = (E.PixelMode and E:GetColor(0, 0, 0) or E:GetColor(0.1, 0.1, 0.1))
		E.db.general.backdropcolor = E:GetColor(0.1, 0.1, 0.1)
		E.db.general.backdropfadecolor = E:GetColor(0.054, 0.054, 0.054, 0.8)
		E.db.unitframe.colors.borderColor = (E.PixelMode and E:GetColor(0, 0, 0) or E:GetColor(0.1, 0.1, 0.1))
		E.db.unitframe.colors.auraBarBuff = E:GetColor(0.1, 0.1, 0.1)
		E.db.unitframe.colors.healthclass = false
		E.db.unitframe.colors.health = E:GetColor(0.1, 0.1, 0.1)
		E.db.unitframe.colors.castColor = E:GetColor(0.1, 0.1, 0.1)
		E.db.unitframe.colors.castClassColor = false
		E.db.chat.tabSelectorColor = {r = 0.09, g = 0.51, b = 0.82}
	end

	--Value Color
	if theme == "class" then
		E.db.general.valuecolor = E:GetColor(classColor.r, classColor.g, classColor.b)
	else
		E.db.general.valuecolor = E:GetColor(0.99, 0.48, 0.17)
	end

	E:UpdateAll(true)

	if InstallStepComplete and not noDisplayMsg then
		InstallStepComplete.message = L["Theme Set"]
		InstallStepComplete:Show()
	end
end

function E:SetupLayout(layout, noDataReset, noDisplayMsg)
	if not noDataReset then
		E.db.layoutSet = layout
		E.db.layoutSetting = layout

		--Unitframes
		E:CopyTable(E.db.unitframe.units, P.unitframe.units)

		--Shared base layout, tweaks to individual layouts will be below
		E:ResetMovers()
		if not E.db.movers then
			E.db.movers = {}
		end

	--ActionBars
		E.db.actionbar.bar1.buttons = 8
		E.db.actionbar.bar1.buttonSize = 50
		E.db.actionbar.bar1.buttonSpacing = 1
		E.db.actionbar.bar2.buttons = 9
		E.db.actionbar.bar2.buttonSize = 38
		E.db.actionbar.bar2.buttonSpacing = 1
		E.db.actionbar.bar2.enabled = true
		E.db.actionbar.bar3.buttons = 8
		E.db.actionbar.bar3.buttonSize = 50
		E.db.actionbar.bar3.buttonSpacing = 1
		E.db.actionbar.bar3.buttonsPerRow = 10
		E.db.actionbar.bar4.enabled = false
		E.db.actionbar.bar5.enabled = false
	--Auras
		E.db.auras.buffs.countFontSize = 10
		E.db.auras.buffs.size = 40
		E.db.auras.debuffs.countFontSize = 10
		E.db.auras.debuffs.size = 40
		E.db.auras.consolidatedBuffs.enable = true
	--Bags
		E.db.bags.bagSize = 42
		E.db.bags.bagWidth = 472
		E.db.bags.bankSize = 42
		E.db.bags.bankWidth = 472
	--Chat
		E.db.chat.separateSizes = false
		E.db.chat.panelHeight = 236
		E.db.chat.panelWidth = 472
		E.db.chat.tabFontSize = 12
	--DataBars
		E.db.databars.experience.height = 10
		E.db.databars.experience.orientation = "HORIZONTAL"
		E.db.databars.experience.textSize = 12
		E.db.databars.experience.width = 350
		E.db.databars.reputation.enable = true
		E.db.databars.reputation.height = 10
		E.db.databars.reputation.orientation = "HORIZONTAL"
		E.db.databars.reputation.width = 259
	--General
		E.db.general.minimap.size = 220
		E.db.general.watchFrameHeight = 400
		E.db.general.totems.growthDirection = "HORIZONTAL"
		E.db.general.totems.size = 50
		E.db.general.totems.spacing = 8
	--Movers
		for mover, position in pairs(E.LayoutMoverPositions.ALL) do
			E.db.movers[mover] = position
			E:SaveMoverDefaultPosition(mover)
		end
	--Tooltip
		E.db.tooltip.textFontSize = 12
		E.db.tooltip.healthBar.fontOutline = "MONOCHROMEOUTLINE"
		E.db.tooltip.healthBar.height = 12
	--UnitFrames
		E.db.unitframe.smoothbars = true
		E.db.unitframe.thinBorders = true
		--Player
			E.db.unitframe.units.player.aurabar.height = 26
			E.db.unitframe.units.player.buffs.perrow = 7
			E.db.unitframe.units.player.castbar.height = 40
			E.db.unitframe.units.player.castbar.insideInfoPanel = false
			E.db.unitframe.units.player.castbar.width = 407
			E.db.unitframe.units.player.classbar.height = 14
			E.db.unitframe.units.player.debuffs.perrow = 7
			E.db.unitframe.units.player.disableMouseoverGlow = true
			E.db.unitframe.units.player.health.attachTextTo = "InfoPanel"
			E.db.unitframe.units.player.height = 82
			E.db.unitframe.units.player.infoPanel.enable = true
			E.db.unitframe.units.player.power.attachTextTo = "InfoPanel"
			E.db.unitframe.units.player.power.height = 22
			E.db.unitframe.units.player.stagger.width = 14
		--Target
			E.db.unitframe.units.target.aurabar.height = 26
			E.db.unitframe.units.target.buffs.anchorPoint = "TOPLEFT"
			E.db.unitframe.units.target.buffs.perrow = 7
			E.db.unitframe.units.target.castbar.height = 40
			E.db.unitframe.units.target.castbar.insideInfoPanel = false
			E.db.unitframe.units.target.castbar.width = 407
			E.db.unitframe.units.target.combobar.height = 14
			E.db.unitframe.units.target.debuffs.anchorPoint = "TOPLEFT"
			E.db.unitframe.units.target.debuffs.attachTo = "FRAME"
			E.db.unitframe.units.target.debuffs.enable = false
			E.db.unitframe.units.target.debuffs.maxDuration = 0
			E.db.unitframe.units.target.debuffs.perrow = 7
			E.db.unitframe.units.target.disableMouseoverGlow = true
			E.db.unitframe.units.target.health.attachTextTo = "InfoPanel"
			E.db.unitframe.units.target.height = 82
			E.db.unitframe.units.target.infoPanel.enable = true
			E.db.unitframe.units.target.name.attachTextTo = "InfoPanel"
			E.db.unitframe.units.target.orientation = "LEFT"
			E.db.unitframe.units.target.power.attachTextTo = "InfoPanel"
			E.db.unitframe.units.target.power.height = 22
		--TargetTarget
			E.db.unitframe.units.targettarget.debuffs.anchorPoint = "TOPRIGHT"
			E.db.unitframe.units.targettarget.debuffs.enable = false
			E.db.unitframe.units.targettarget.disableMouseoverGlow = true
			E.db.unitframe.units.targettarget.power.enable = false
			E.db.unitframe.units.targettarget.raidicon.attachTo = "LEFT"
			E.db.unitframe.units.targettarget.raidicon.enable = false
			E.db.unitframe.units.targettarget.raidicon.xOffset = 2
			E.db.unitframe.units.targettarget.raidicon.yOffset = 0
			E.db.unitframe.units.targettarget.threatStyle = "GLOW"
			E.db.unitframe.units.targettarget.width = 270
		--Focus
			E.db.unitframe.units.focus.castbar.width = 270
			E.db.unitframe.units.focus.width = 270
		--Pet
			E.db.unitframe.units.pet.castbar.iconSize = 32
			E.db.unitframe.units.pet.castbar.width = 270
			E.db.unitframe.units.pet.debuffs.anchorPoint = "TOPRIGHT"
			E.db.unitframe.units.pet.debuffs.enable = true
			E.db.unitframe.units.pet.disableTargetGlow = false
			E.db.unitframe.units.pet.infoPanel.height = 14
			E.db.unitframe.units.pet.portrait.camDistanceScale = 2
			E.db.unitframe.units.pet.width = 270
		--Boss
			E.db.unitframe.units.boss.buffs.maxDuration = 300
			E.db.unitframe.units.boss.buffs.sizeOverride = 27
			E.db.unitframe.units.boss.buffs.yOffset = 16
			E.db.unitframe.units.boss.castbar.width = 246
			E.db.unitframe.units.boss.debuffs.maxDuration = 300
			E.db.unitframe.units.boss.debuffs.numrows = 1
			E.db.unitframe.units.boss.debuffs.sizeOverride = 27
			E.db.unitframe.units.boss.debuffs.yOffset = -16
			E.db.unitframe.units.boss.height = 60
			E.db.unitframe.units.boss.infoPanel.height = 17
			E.db.unitframe.units.boss.portrait.camDistanceScale = 2
			E.db.unitframe.units.boss.portrait.width = 45
			E.db.unitframe.units.boss.width = 246
		--Party
			E.db.unitframe.units.party.height = 74
			E.db.unitframe.units.party.power.height = 13
			E.db.unitframe.units.party.rdebuffs.font = "PT Sans Narrow"
			E.db.unitframe.units.party.width = 231
		--Raid
			E.db.unitframe.units.raid.growthDirection = "RIGHT_UP"
			E.db.unitframe.units.raid.infoPanel.enable = true
			E.db.unitframe.units.raid.name.attachTextTo = "InfoPanel"
			E.db.unitframe.units.raid.name.position = "BOTTOMLEFT"
			E.db.unitframe.units.raid.name.xOffset = 2
			E.db.unitframe.units.raid.numGroups = 8
			E.db.unitframe.units.raid.rdebuffs.font = "PT Sans Narrow"
			E.db.unitframe.units.raid.rdebuffs.size = 30
			E.db.unitframe.units.raid.rdebuffs.xOffset = 30
			E.db.unitframe.units.raid.rdebuffs.yOffset = 25
			E.db.unitframe.units.raid.resurrectIcon.attachTo = "BOTTOMRIGHT"
			E.db.unitframe.units.raid.roleIcon.attachTo = "InfoPanel"
			E.db.unitframe.units.raid.roleIcon.position = "BOTTOMRIGHT"
			E.db.unitframe.units.raid.roleIcon.size = 12
			E.db.unitframe.units.raid.roleIcon.xOffset = 0
			E.db.unitframe.units.raid.visibility = "[@raid6,noexists] hide;show"
			E.db.unitframe.units.raid.width = 92
		--Raid40
			E.db.unitframe.units.raid40.enable = false
			E.db.unitframe.units.raid40.rdebuffs.font = "PT Sans Narrow"

		--[[
			Layout Tweaks will be handled below,
			These are changes that deviate from the shared base layout.
		]]
		if E.LayoutMoverPositions[layout] then
			for mover, position in pairs(E.LayoutMoverPositions[layout]) do
				E.db.movers[mover] = position
				E:SaveMoverDefaultPosition(mover)
			end
		end

		if layout == "healer" then
			E.db.unitframe.units.party.enable = false
			E.db.unitframe.units.raid.visibility = "[nogroup] hide;show"
		end
	end

	E:UpdateAll(true)

	if InstallStepComplete and not noDisplayMsg then
		InstallStepComplete.message = L["Layout Set"]
		InstallStepComplete:Show()
	end
end

local function SetupAuras(style, noDisplayMsg)
	local frame = UF.player
	E:CopyTable(E.db.unitframe.units.player.buffs, P.unitframe.units.player.buffs)
	E:CopyTable(E.db.unitframe.units.player.debuffs, P.unitframe.units.player.debuffs)
	E:CopyTable(E.db.unitframe.units.player.aurabar, P.unitframe.units.player.aurabar)
	if frame then
		UF:Configure_AllAuras(frame)
		UF:Configure_AuraBars(frame)
	end

	frame = UF.target
	E:CopyTable(E.db.unitframe.units.target.buffs, P.unitframe.units.target.buffs)
	E:CopyTable(E.db.unitframe.units.target.debuffs, P.unitframe.units.target.debuffs)
	E:CopyTable(E.db.unitframe.units.target.aurabar, P.unitframe.units.target.aurabar)
	if frame then
		UF:Configure_AllAuras(frame)
		UF:Configure_AuraBars(frame)
	end

	frame = UF.focus
	E:CopyTable(E.db.unitframe.units.focus.buffs, P.unitframe.units.focus.buffs)
	E:CopyTable(E.db.unitframe.units.focus.debuffs, P.unitframe.units.focus.debuffs)
	E:CopyTable(E.db.unitframe.units.focus.aurabar, P.unitframe.units.focus.aurabar)
	if frame then
		UF:Configure_AllAuras(frame)
		UF:Configure_AuraBars(frame)
	end

	if not style then
		--PLAYER
		E.db.unitframe.units.player.buffs.enable = true
		E.db.unitframe.units.player.buffs.attachTo = "FRAME"
		E.db.unitframe.units.player.debuffs.attachTo = "BUFFS"
		E.db.unitframe.units.player.aurabar.enable = false
		if E.private.unitframe.enable then
			UF:CreateAndUpdateUF("player")
		end

		--TARGET
		E.db.unitframe.units.target.debuffs.enable = true
		E.db.unitframe.units.target.aurabar.enable = false
		if E.private.unitframe.enable then
			UF:CreateAndUpdateUF("target")
		end
	end

	if InstallStepComplete and not noDisplayMsg then
		InstallStepComplete.message = L["Auras Set"]
		InstallStepComplete:Show()
	end
end

local function InstallComplete()
	E.private.install_complete = E.version

	ReloadUI()
end

local function ResetAll()
	InstallNextButton:Disable()
	InstallPrevButton:Disable()
	InstallOption1Button:Hide()
	InstallOption1Button:SetScript("OnClick", nil)
	InstallOption1Button:SetText("")
	InstallOption2Button:Hide()
	InstallOption2Button:SetScript("OnClick", nil)
	InstallOption2Button:SetText("")
	InstallOption3Button:Hide()
	InstallOption3Button:SetScript("OnClick", nil)
	InstallOption3Button:SetText("")
	InstallOption4Button:Hide()
	InstallOption4Button:SetScript("OnClick", nil)
	InstallOption4Button:SetText("")
	InstallSlider:Hide()
	InstallSlider.Min:SetText("")
	InstallSlider.Max:SetText("")
	InstallSlider.Cur:SetText("")
	ElvUIInstallFrame.SubTitle:SetText("")
	ElvUIInstallFrame.Desc1:SetText("")
	ElvUIInstallFrame.Desc2:SetText("")
	ElvUIInstallFrame.Desc3:SetText("")
	ElvUIInstallFrame:Size(550, 400)
end

local function SetPage(PageNum)
	CURRENT_PAGE = PageNum
	ResetAll()

	InstallStatus.anim.progress:SetChange(PageNum)
	InstallStatus.anim.progress:Play()
	InstallStatus.text:SetText(CURRENT_PAGE.." / "..MAX_PAGE)

	if PageNum == MAX_PAGE then
		InstallNextButton:Disable()
	else
		InstallNextButton:Enable()
	end

	if PageNum == 1 then
		InstallPrevButton:Disable()
	else
		InstallPrevButton:Enable()
	end

	local f = ElvUIInstallFrame

	local r, g, b = E:ColorGradient(CURRENT_PAGE / MAX_PAGE, 1, 0, 0, 1, 1, 0, 0, 1, 0)
	f.Status:SetStatusBarColor(r, g, b)

	if PageNum == 1 then
		f.SubTitle:SetFormattedText(L["Welcome to ElvUI version %s!"], E.version)
		f.Desc1:SetText(L["This install process will help you learn some of the features in ElvUI has to offer and also prepare your user interface for usage."])
		f.Desc2:SetText(L["The in-game configuration menu can be accessed by typing the /ec command or by clicking the 'C' button on the minimap. Press the button below if you wish to skip the installation process."])
		f.Desc3:SetText(L["Please press the continue button to go onto the next step."])
		InstallOption1Button:Show()
		InstallOption1Button:SetScript("OnClick", InstallComplete)
		InstallOption1Button:SetText(L["Skip Process"])
	elseif PageNum == 2 then
		f.SubTitle:SetText(L["CVars"])
		f.Desc1:SetText(L["This part of the installation process sets up your World of Warcraft default options it is recommended you should do this step for everything to behave properly."])
		f.Desc2:SetText(L["Please click the button below to setup your CVars."])
		f.Desc3:SetText(L["Importance: |cff07D400High|r"])

		InstallOption1Button:Show()
		InstallOption1Button:SetScript("OnClick", function() SetupCVars() end)
		InstallOption1Button:SetText(L["Setup CVars"])
	elseif PageNum == 3 then
		f.SubTitle:SetText(L["Chat"])
		f.Desc1:SetText(L["This part of the installation process sets up your chat windows names, positions and colors."])
		f.Desc2:SetText(L["The chat windows function the same as Blizzard standard chat windows, you can right click the tabs and drag them around, rename, etc. Please click the button below to setup your chat windows."])
		f.Desc3:SetText(L["Importance: |cffD3CF00Medium|r"])

		InstallOption1Button:Show()
		InstallOption1Button:SetScript("OnClick", function() SetupChat() end)
		InstallOption1Button:SetText(L["Setup Chat"])
	elseif PageNum == 4 then
		f.SubTitle:SetText(L["Theme Setup"])
		f.Desc1:SetText(L["Choose a theme layout you wish to use for your initial setup."])
		f.Desc2:SetText(L["You can always change fonts and colors of any element of ElvUI from the in-game configuration."])
		f.Desc3:SetText(L["Importance: |cffFF0000Low|r"])

		InstallOption1Button:Show()
		InstallOption1Button:SetScript("OnClick", function() E:SetupTheme("classic") end)
		InstallOption1Button:SetText(L["Classic"])
		InstallOption2Button:Show()
		InstallOption2Button:SetScript("OnClick", function() E:SetupTheme("default") end)
		InstallOption2Button:SetText(L["Dark"])
		InstallOption3Button:Show()
		InstallOption3Button:SetScript("OnClick", function() E:SetupTheme("class") end)
		InstallOption3Button:SetText(CLASS)
	elseif PageNum == 5 then
		f.SubTitle:SetText(UISCALE)
		f.Desc1:SetFormattedText(L["Adjust the UI Scale to fit your screen, press the autoscale button to set the UI Scale automatically."])
		InstallSlider:Show()
		InstallSlider:SetValueStep(0.01)
		InstallSlider:SetMinMaxValues(0.4, 1.15)

		local value = E.global.general.UIScale
		InstallSlider:SetValue(value)
		InstallSlider.Cur:SetText(value)
		InstallSlider:SetScript("OnValueChanged", function(slider)
			local val = E:Round(slider:GetValue(), 2)
			E.global.general.UIScale = val
			InstallSlider.Cur:SetText(val)
		end)

		InstallSlider.Min:SetText(0.4)
		InstallSlider.Max:SetText(1.15)
		InstallOption1Button:Show()
		InstallOption1Button:SetScript("OnClick", function()
			local scale = E:PixelBestSize()

			-- this is to just keep the slider in place, the values need updated again afterwards
			InstallSlider:SetValue(scale)

			-- update the values with deeper accuracy
			E.global.general.UIScale = scale
			InstallSlider.Cur:SetText(E.global.general.UIScale)
		end)

		InstallOption1Button:SetText(L["Auto Scale"])
		InstallOption2Button:Show()
		InstallOption2Button:SetScript("OnClick", function()
			E:PixelScaleChanged(nil, true)
		end)

		InstallOption2Button:SetText(L["Preview"])
		f.Desc3:SetText(L["Importance: |cff07D400High|r"])
	elseif PageNum == 6 then
		f.SubTitle:SetText(L["Layout"])
		f.Desc1:SetText(L["You can now choose what layout you wish to use based on your combat role."])
		f.Desc2:SetText(L["This will change the layout of your unitframes and actionbars."])
		f.Desc3:SetText(L["Importance: |cffD3CF00Medium|r"])

		InstallOption1Button:Show()
		InstallOption1Button:SetScript("OnClick", function() E.db.layoutSet = nil E:SetupLayout("tank") end)
		InstallOption1Button:SetText(STAT_CATEGORY_MELEE)
		InstallOption2Button:Show()
		InstallOption2Button:SetScript("OnClick", function() E.db.layoutSet = nil E:SetupLayout("healer") end)
		InstallOption2Button:SetText(L["Healer"])
		InstallOption3Button:Show()
		InstallOption3Button:SetScript("OnClick", function() E.db.layoutSet = nil E:SetupLayout("dpsCaster") end)
		InstallOption3Button:SetText(STAT_CATEGORY_RANGED)
	elseif PageNum == 7 then
		f.SubTitle:SetText(L["Auras"])
		f.Desc1:SetText(L["Select the type of aura system you want to use with ElvUI's unitframes. Set to Aura Bar & Icons to use both aura bars and icons, set to icons only to only see icons."])
		f.Desc2:SetText(L["If you have an icon or aurabar that you don't want to display simply hold down shift and right click the icon for it to disapear."])
		f.Desc3:SetText(L["Importance: |cffD3CF00Medium|r"])
		InstallOption1Button:Show()
		InstallOption1Button:SetScript("OnClick", function() SetupAuras(true) end)
		InstallOption1Button:SetText(L["Aura Bars & Icons"])
		InstallOption2Button:Show()
		InstallOption2Button:SetScript("OnClick", function() SetupAuras() end)
		InstallOption2Button:SetText(L["Icons Only"])
	elseif PageNum == 8 then
		f.SubTitle:SetText(L["Installation Complete"])
		f.Desc1:SetText(L["You are now finished with the installation process. If you are in need of technical support please visit us at https://github.com/ElvUI-MoP"])
		f.Desc2:SetText(L["Please click the button below so you can setup variables and ReloadUI."])
		InstallOption1Button:Show()
		InstallOption1Button:SetScript("OnClick", function() E:StaticPopup_Show("ELVUI_EDITBOX", nil, nil, "https://discord.gg/UXSc7nt") end)
		InstallOption1Button:SetText(L["Discord"])
		InstallOption2Button:Show()
		InstallOption2Button:SetScript("OnClick", InstallComplete)
		InstallOption2Button:SetText(L["Finished"])
		ElvUIInstallFrame:Size(550, 350)
	end
end

local function NextPage()
	if CURRENT_PAGE ~= MAX_PAGE then
		CURRENT_PAGE = CURRENT_PAGE + 1
		SetPage(CURRENT_PAGE)
	end
end

local function PreviousPage()
	if CURRENT_PAGE ~= 1 then
		CURRENT_PAGE = CURRENT_PAGE - 1
		SetPage(CURRENT_PAGE)
	end
end

--Install UI
function E:Install()
	if not InstallStepComplete then
		local imsg = CreateFrame("Frame", "InstallStepComplete", E.UIParent)
		imsg:Size(418, 72)
		imsg:Point("TOP", 0, -190)
		imsg:Hide()
		imsg:SetScript("OnShow", function(f)
			if f.message then
				PlaySoundFile([[Sound\Interface\LevelUp.wav]])
				f.text:SetText(f.message)
				UIFrameFadeOut(f, 3.5, 1, 0)
				E:Delay(4, f.Hide, f)
				f.message = nil
			else
				f:Hide()
			end
		end)

		imsg.firstShow = false

		imsg.bg = imsg:CreateTexture(nil, "BACKGROUND")
		imsg.bg:SetTexture([[Interface\LevelUp\LevelUpTex]])
		imsg.bg:Point("BOTTOM")
		imsg.bg:Size(326, 103)
		imsg.bg:SetTexCoord(0.00195313, 0.63867188, 0.03710938, 0.23828125)
		imsg.bg:SetVertexColor(1, 1, 1, 0.6)

		imsg.lineTop = imsg:CreateTexture(nil, "BACKGROUND")
		imsg.lineTop:SetDrawLayer("BACKGROUND", 2)
		imsg.lineTop:SetTexture([[Interface\LevelUp\LevelUpTex]])
		imsg.lineTop:Point("TOP")
		imsg.lineTop:Size(418, 7)
		imsg.lineTop:SetTexCoord(0.00195313, 0.81835938, 0.01953125, 0.03320313)

		imsg.lineBottom = imsg:CreateTexture(nil, "BACKGROUND")
		imsg.lineBottom:SetDrawLayer("BACKGROUND", 2)
		imsg.lineBottom:SetTexture([[Interface\LevelUp\LevelUpTex]])
		imsg.lineBottom:Point("BOTTOM")
		imsg.lineBottom:Size(418, 7)
		imsg.lineBottom:SetTexCoord(0.00195313, 0.81835938, 0.01953125, 0.03320313)

		imsg.text = imsg:CreateFontString(nil, "ARTWORK", "GameFont_Gigantic")
		imsg.text:Point("BOTTOM", 0, 12)
		imsg.text:SetTextColor(1, 0.82, 0)
		imsg.text:SetJustifyH("CENTER")
	end

	--Create Frame
	if not ElvUIInstallFrame then
		local f = CreateFrame("Button", "ElvUIInstallFrame", E.UIParent)
		f.SetPage = SetPage
		f:Size(550, 400)
		f:SetTemplate("Transparent")
		f:Point("CENTER")
		f:SetFrameStrata("TOOLTIP")

		f:SetMovable(true)
		f:EnableMouse(true)
		f:RegisterForDrag("LeftButton")
		f:SetScript("OnDragStart", function(frame) frame:StartMoving() frame:SetUserPlaced(false) end)
		f:SetScript("OnDragStop", function(frame) frame:StopMovingOrSizing() end)

		f.Title = f:CreateFontString(nil, "OVERLAY")
		f.Title:FontTemplate(nil, 17, nil)
		f.Title:Point("TOP", 0, -5)
		f.Title:SetText(L["ElvUI Installation"])

		f.Next = CreateFrame("Button", "InstallNextButton", f, "UIPanelButtonTemplate")
		f.Next:Size(110, 25)
		f.Next:Point("BOTTOMRIGHT", -5, 5)
		f.Next:SetText(CONTINUE)
		f.Next:Disable()
		f.Next:SetScript("OnClick", NextPage)
		S:HandleButton(f.Next, true)

		f.Prev = CreateFrame("Button", "InstallPrevButton", f, "UIPanelButtonTemplate")
		f.Prev:Size(110, 25)
		f.Prev:Point("BOTTOMLEFT", 5, 5)
		f.Prev:SetText(PREVIOUS)
		f.Prev:Disable()
		f.Prev:SetScript("OnClick", PreviousPage)
		S:HandleButton(f.Prev, true)

		f.Status = CreateFrame("StatusBar", "InstallStatus", f)
		f.Status:SetFrameLevel(f.Status:GetFrameLevel() + 2)
		f.Status:CreateBackdrop()
		f.Status:SetStatusBarTexture(E.media.normTex)
		E:RegisterStatusBar(f.Status)
		f.Status:SetMinMaxValues(0, MAX_PAGE)
		f.Status:Point("TOPLEFT", f.Prev, "TOPRIGHT", 6, -2)
		f.Status:Point("BOTTOMRIGHT", f.Next, "BOTTOMLEFT", -6, 2)

		-- Setup StatusBar Animation
		f.Status.anim = CreateAnimationGroup(f.Status)
		f.Status.anim.progress = f.Status.anim:CreateAnimation("Progress")
		f.Status.anim.progress:SetEasing("Out")
		f.Status.anim.progress:SetDuration(0.3)

		f.Status.text = f.Status:CreateFontString(nil, "OVERLAY")
		f.Status.text:FontTemplate()
		f.Status.text:Point("CENTER")
		f.Status.text:SetText(CURRENT_PAGE.." / "..MAX_PAGE)

		f.Slider = CreateFrame("Slider", "InstallSlider", f)
		f.Slider:SetOrientation("HORIZONTAL")
		f.Slider:Height(15)
		f.Slider:Width(400)
		f.Slider:SetHitRectInsets(0, 0, -10, 0)
		f.Slider:Point("CENTER", 0, 45)
		S:HandleSliderFrame(f.Slider)
		f.Slider:Hide()

		f.Slider.Min = f.Slider:CreateFontString(nil, "ARTWORK", "GameFontHighlightSmall")
		f.Slider.Min:Point("RIGHT", f.Slider, "LEFT", -3, 0)
		f.Slider.Max = f.Slider:CreateFontString(nil, "ARTWORK", "GameFontHighlightSmall")
		f.Slider.Max:Point("LEFT", f.Slider, "RIGHT", 3, 0)
		f.Slider.Cur = f.Slider:CreateFontString(nil, "ARTWORK", "GameFontHighlightSmall")
		f.Slider.Cur:Point("BOTTOM", f.Slider, "TOP", 0, 10)
		f.Slider.Cur:FontTemplate(nil, 30, nil)

		f.Option1 = CreateFrame("Button", "InstallOption1Button", f, "UIPanelButtonTemplate")
		f.Option1:Size(160, 30)
		f.Option1:Point("BOTTOM", 0, 45)
		f.Option1:SetText("")
		f.Option1:Hide()
		S:HandleButton(f.Option1, true)

		f.Option2 = CreateFrame("Button", "InstallOption2Button", f, "UIPanelButtonTemplate")
		f.Option2:Size(110, 30)
		f.Option2:Point("BOTTOMLEFT", f, "BOTTOM", 4, 45)
		f.Option2:SetText("")
		f.Option2:Hide()
		f.Option2:SetScript("OnShow", function()
			f.Option1:Width(110)
			f.Option1:ClearAllPoints()
			f.Option1:Point("BOTTOMRIGHT", f, "BOTTOM", -4, 45)
		end)
		f.Option2:SetScript("OnHide", function()
			f.Option1:Width(160)
			f.Option1:ClearAllPoints()
			f.Option1:Point("BOTTOM", 0, 45)
		end)
		S:HandleButton(f.Option2, true)

		f.Option3 = CreateFrame("Button", "InstallOption3Button", f, "UIPanelButtonTemplate")
		f.Option3:Size(100, 30)
		f.Option3:Point("LEFT", f.Option2, "RIGHT", 4, 0)
		f.Option3:SetText("")
		f.Option3:Hide()
		f.Option3:SetScript("OnShow", function()
			f.Option1:Width(100)
			f.Option1:ClearAllPoints()
			f.Option1:Point("RIGHT", f.Option2, "LEFT", -4, 0)
			f.Option2:Width(100)
			f.Option2:ClearAllPoints()
			f.Option2:Point("BOTTOM", f, "BOTTOM", 0, 45)
		end)
		f.Option3:SetScript("OnHide", function()
			f.Option1:Width(160)
			f.Option1:ClearAllPoints()
			f.Option1:Point("BOTTOM", 0, 45)
			f.Option2:Width(110)
			f.Option2:ClearAllPoints()
			f.Option2:Point("BOTTOMLEFT", f, "BOTTOM", 4, 45)
		end)
		S:HandleButton(f.Option3, true)

		f.Option4 = CreateFrame("Button", "InstallOption4Button", f, "UIPanelButtonTemplate")
		f.Option4:Size(100, 30)
		f.Option4:Point("LEFT", f.Option3, "RIGHT", 4, 0)
		f.Option4:SetText("")
		f.Option4:Hide()
		f.Option4:SetScript("OnShow", function()
			f.Option1:Width(100)
			f.Option1:ClearAllPoints()
			f.Option1:Point("RIGHT", f.Option2, "LEFT", -4, 0)
			f.Option2:Width(100)
			f.Option2:ClearAllPoints()
			f.Option2:Point("BOTTOMRIGHT", f, "BOTTOM", -4, 45)
		end)
		f.Option4:SetScript("OnHide", function()
			f.Option1:Width(160)
			f.Option1:ClearAllPoints()
			f.Option1:Point("BOTTOM", 0, 45)
			f.Option2:Width(110)
			f.Option2:ClearAllPoints()
			f.Option2:Point("BOTTOMLEFT", f, "BOTTOM", 4, 45)
		end)
		S:HandleButton(f.Option4, true)

		f.SubTitle = f:CreateFontString(nil, "OVERLAY")
		f.SubTitle:FontTemplate(nil, 15, nil)
		f.SubTitle:Point("TOP", 0, -40)

		f.Desc1 = f:CreateFontString(nil, "OVERLAY")
		f.Desc1:FontTemplate()
		f.Desc1:Point("TOPLEFT", 20, -75)
		f.Desc1:Width(f:GetWidth() - 40)

		f.Desc2 = f:CreateFontString(nil, "OVERLAY")
		f.Desc2:FontTemplate()
		f.Desc2:Point("TOPLEFT", 20, -125)
		f.Desc2:Width(f:GetWidth() - 40)

		f.Desc3 = f:CreateFontString(nil, "OVERLAY")
		f.Desc3:FontTemplate()
		f.Desc3:Point("TOPLEFT", 20, -175)
		f.Desc3:Width(f:GetWidth() - 40)

		local closeButton = CreateFrame("Button", "InstallCloseButton", f, "UIPanelCloseButton")
		closeButton:Point("TOPRIGHT", f, "TOPRIGHT")
		closeButton:SetScript("OnClick", function() f:Hide() end)
		S:HandleCloseButton(closeButton)

		local logo = f:CreateTexture("InstallTutorialImage", "OVERLAY")
		logo:Size(256, 128)
		logo:SetTexture(E.Media.Textures.Logo)
		logo:Point("BOTTOM", 0, 70)
		f.tutorialImage = logo
	end

	ElvUIInstallFrame:Show()
	NextPage()
end