local E, L, V, P, G = unpack(select(2, ...))
local mod = E:GetModule("DataBars")
local LSM = E.Libs.LSM

local _G = _G
local format = format

local GetFriendshipReputation = GetFriendshipReputation
local GetWatchedFactionInfo, GetNumFactions, GetFactionInfo = GetWatchedFactionInfo, GetNumFactions, GetFactionInfo
local InCombatLockdown = InCombatLockdown
local ToggleCharacter = ToggleCharacter
local CreateFrame = CreateFrame
local FACTION_BAR_COLORS = FACTION_BAR_COLORS
local REPUTATION, STANDING = REPUTATION, STANDING
local MAX_REPUTATION_REACTION = MAX_REPUTATION_REACTION

local backupColor = FACTION_BAR_COLORS[1]
local FactionStandingLabelUnknown = UNKNOWN

function mod:UpdateReputation(event)
	if not mod.db.reputation.enable then return end

	local bar = self.repBar

	local ID
	local isFriend, friendText, standingLabel
	local isCapped
	local name, reaction, min, max, value, factionID = GetWatchedFactionInfo()

	if reaction == MAX_REPUTATION_REACTION then
		-- max rank, make it look like a full bar
		min, max, value = 0, 1, 1
		isCapped = true
	end

	local numFactions = GetNumFactions()

	if not name or (event == "PLAYER_REGEN_DISABLED" and self.db.reputation.hideInCombat) then
		bar:Hide()
	elseif name and (not self.db.reputation.hideInCombat or not InCombatLockdown()) then
		bar:Show()

		if self.db.reputation.hideInVehicle then
			E:RegisterObjectForVehicleLock(bar, E.UIParent)
		else
			E:UnregisterObjectForVehicleLock(bar)
		end

		local text = ""
		local textFormat = self.db.reputation.textFormat
		local color = FACTION_BAR_COLORS[reaction] or backupColor
		bar.statusBar:SetStatusBarColor(color.r, color.g, color.b)

		bar.statusBar:SetMinMaxValues(min, max)
		bar.statusBar:SetValue(value)

		for i = 1, numFactions do
			local factionName, _, standingID, _, _, _, _, _, _, _, _, _, _, factionID = GetFactionInfo(i)
			local friendID, _, _, _, _, _, friendTextLevel = GetFriendshipReputation(factionID)
			if factionName == name then
				if friendID ~= nil then
					isFriend = true
					friendText = friendTextLevel
				else
					ID = standingID
				end
			end
		end

		if ID then
			standingLabel = _G["FACTION_STANDING_LABEL"..ID]
		else
			standingLabel = FactionStandingLabelUnknown
		end

		--Prevent a division by zero
		local maxMinDiff = max - min
		if maxMinDiff == 0 then
			maxMinDiff = 1
		end

		if isCapped and textFormat ~= "NONE" then
			-- show only name and standing on exalted
			text = format("%s: [%s]", name, isFriend and friendText or standingLabel)
		else
			if textFormat == "PERCENT" then
				text = format("%s: %d%% [%s]", name, ((value - min) / (maxMinDiff) * 100), isFriend and friendText or standingLabel)
			elseif textFormat == "CURMAX" then
				text = format("%s: %s - %s [%s]", name, E:ShortValue(value - min), E:ShortValue(max - min), isFriend and friendText or standingLabel)
			elseif textFormat == "CURPERC" then
				text = format("%s: %s - %d%% [%s]", name, E:ShortValue(value - min), ((value - min) / (maxMinDiff) * 100), isFriend and friendText or standingLabel)
			elseif textFormat == "CUR" then
				text = format("%s: %s [%s]", name, E:ShortValue(value - min), isFriend and friendText or standingLabel)
			elseif textFormat == "REM" then
				text = format("%s: %s [%s]", name, E:ShortValue((max - min) - (value-min)), isFriend and friendText or standingLabel)
			elseif textFormat == "CURREM" then
				text = format("%s: %s - %s [%s]", name, E:ShortValue(value - min), E:ShortValue((max - min) - (value-min)), isFriend and friendText or standingLabel)
			elseif textFormat == "CURPERCREM" then
				text = format("%s: %s - %d%% (%s) [%s]", name, E:ShortValue(value - min), ((value - min) / (maxMinDiff) * 100), E:ShortValue((max - min) - (value-min)), isFriend and friendText or standingLabel)
			end
		end

		bar.text:SetText(text)
	end
end

function mod:ReputationBar_OnEnter()
	if mod.db.reputation.mouseover then
		E:UIFrameFadeIn(self, 0.4, self:GetAlpha(), 1)
	end
	GameTooltip:ClearLines()
	GameTooltip:SetOwner(self, "ANCHOR_CURSOR", 0, -4)

	local name, reaction, min, max, value, factionID = GetWatchedFactionInfo()

	if name then
		GameTooltip:AddLine(name)
		GameTooltip:AddLine(" ")

		local friendID, friendTextLevel, _
		if factionID then
			friendID, _, _, _, _, _, friendTextLevel = GetFriendshipReputation(factionID)
		end

		GameTooltip:AddDoubleLine(STANDING..":", (friendID and friendTextLevel) or _G["FACTION_STANDING_LABEL"..reaction], 1, 1, 1)
		if reaction ~= MAX_REPUTATION_REACTION then
			GameTooltip:AddDoubleLine(REPUTATION..":", format("%d / %d (%d%%)", value - min, max - min, (value - min) / ((max - min == 0) and max or (max - min)) * 100), 1, 1, 1)
		end
	end
	GameTooltip:Show()
end

function mod:ReputationBar_OnClick()
	ToggleCharacter("ReputationFrame")
end

function mod:UpdateReputationDimensions()
	self.repBar:Width(self.db.reputation.width)
	self.repBar:Height(self.db.reputation.height)
	self.repBar.statusBar:SetOrientation(self.db.reputation.orientation)
	self.repBar.statusBar:SetReverseFill(self.db.reputation.reverseFill)
	self.repBar.text:FontTemplate(LSM:Fetch("font", self.db.reputation.font), self.db.reputation.textSize, self.db.reputation.fontOutline)

	if self.db.reputation.orientation == "HORIZONTAL" then
		self.repBar.statusBar:SetRotatesTexture(false)
	else
		self.repBar.statusBar:SetRotatesTexture(true)
	end

	if self.db.reputation.mouseover then
		self.repBar:SetAlpha(0)
	else
		self.repBar:SetAlpha(1)
	end
end

function mod:EnableDisable_ReputationBar()
	if self.db.reputation.enable then
		self:RegisterEvent("UPDATE_FACTION", "UpdateReputation")
		self:UpdateReputation()
		E:EnableMover(self.repBar.mover:GetName())
	else
		self:UnregisterEvent("UPDATE_FACTION")
		self.repBar:Hide()
		E:DisableMover(self.repBar.mover:GetName())
	end
end

function mod:LoadReputationBar()
	self.repBar = self:CreateBar("ElvUI_ReputationBar", self.ReputationBar_OnEnter, self.ReputationBar_OnClick, "RIGHT", RightChatPanel, "LEFT", E.Border - E.Spacing*3, 0)
	E:RegisterStatusBar(self.repBar.statusBar)

	self.repBar.eventFrame = CreateFrame("Frame")
	self.repBar.eventFrame:Hide()
	self.repBar.eventFrame:RegisterEvent("PLAYER_REGEN_DISABLED")
	self.repBar.eventFrame:RegisterEvent("PLAYER_REGEN_ENABLED")
	self.repBar.eventFrame:SetScript("OnEvent", function(_, event) mod:UpdateReputation(event) end)

	self:UpdateReputationDimensions()

	E:CreateMover(self.repBar, "ReputationBarMover", L["Reputation Bar"], nil, nil, nil, nil, nil, "databars,reputation")
	self:EnableDisable_ReputationBar()
end