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

local _G = _G
local format = format

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

		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 = GetFactionInfo(i)
			if factionName == name then
				ID = standingID
			end
		end

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

		local maxMinDiff = max - min
		if maxMinDiff == 0 then
			maxMinDiff = 1
		end

		if textFormat == "PERCENT" then
			text = format("%s: %d%% [%s]", name, ((value - min) / maxMinDiff * 100), standingLabel)
		elseif textFormat == "CURMAX" then
			text = format("%s: %s - %s [%s]", name, E:ShortValue(value - min), E:ShortValue(max - min), standingLabel)
		elseif textFormat == "CURPERC" then
			text = format("%s: %s - %d%% [%s]", name, E:ShortValue(value - min), ((value - min) / maxMinDiff * 100), standingLabel)
		elseif textFormat == "CUR" then
			text = format("%s: %s [%s]", name, E:ShortValue(value - min), standingLabel)
		elseif textFormat == "REM" then
			text = format("%s: %s [%s]", name, E:ShortValue((max - min) - (value-min)), standingLabel)
		elseif textFormat == "CURREM" then
			text = format("%s: %s - %s [%s]", name, E:ShortValue(value - min), E:ShortValue((max - min) - (value - min)), 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)), standingLabel)
		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 = GetWatchedFactionInfo()
	if name then
		GameTooltip:AddLine(name)
		GameTooltip:AddLine(" ")

		GameTooltip:AddDoubleLine(STANDING..":", _G["FACTION_STANDING_LABEL"..reaction], 1, 1, 1)
		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
	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.text:FontTemplate(LSM:Fetch("font", self.db.reputation.font), self.db.reputation.textSize, self.db.reputation.fontOutline)
	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