local mod	= DBM:NewMod("TalonGuards", "DBM-BWL", 1)
local L		= mod:GetLocalizedStrings()

mod:SetRevision("20200311152717")
mod:SetCreatureID(12460, 12461, 99999)--99999 to prevent mod from ending combat after one of each talon guard type die. Mod will effectively ALWAYS wipe, but it has disabled stats/reporting so irrelevant
mod:SetModelID(12460)
mod:RegisterCombat("combat")
mod.noStatistics = true

local warnVuln			= mod:NewAnnounce("WarnVulnerable", 1, false)

mod:AddNamePlateOption("NPAuraOnVulnerable", 22277)

local vulnerabilities = {
	-- [guid] = school
}

--Constants
local vulnMobs = {
	[12460] = true,--"Death Talon Wyrmguard"
	[12461] = true,--"Death Talon Overseer"
}

-- https://wow.gamepedia.com/COMBAT_LOG_EVENT
local spellInfo = {
	[2] =	{"Holy",	{r=255, g=230, b=128},	"135924"},-- Smite
	[4] =	{"Fire",	{r=255, g=128, b=0},	"135808"},-- Pyroblast
	[8] =	{"Nature",	{r=77, g=255, b=77},	"136006"},-- Wrath
	[16] =	{"Frost",	{r=128, g=255, b=255},	"135846"},-- Frostbolt
	[32] =	{"Shadow",	{r=128, g=128, b=255},	"136197"},-- Shadow Bolt
	[64] =	{"Arcane",	{r=255, g=128, b=255},	"136096"},-- Arcane Missiles
}

local vulnSpells = {
	--No Holy?
	[22277] = 4,
	[22280] = 8,
	[22278] = 16,
	[22279] = 32,
	[22281] = 64,
}

--Local Functions
-- in theory this should only alert on a new vulnerability on your target or when you change target
local function update_vulnerability(self)
	local target = UnitGUID("target")
	local spellSchool = vulnerabilities[target]
	local cid = self:GetCIDFromGUID(target)
	if not spellSchool or not vulnMobs[cid] then
		return
	end

	local info = spellInfo[spellSchool]
	if not info then return end
	local name = L[info[1]] or info[1]

	warnVuln.icon = info[3]
	if self:AntiSpam(3, name) then
		warnVuln:Show(name)
	end
	if self.Options.NPAuraOnVulnerable then
		DBM.Nameplate:Hide(true, target, 22277, 135924)
		DBM.Nameplate:Hide(true, target, 22277, 135808)
		DBM.Nameplate:Hide(true, target, 22277, 136006)
		DBM.Nameplate:Hide(true, target, 22277, 135846)
		DBM.Nameplate:Hide(true, target, 22277, 136197)
		DBM.Nameplate:Hide(true, target, 22277, 136096)
		DBM.Nameplate:Show(true, target, 22277, tonumber(info[3]))
	end
end

local function check_spell_damage(self, target, amount, spellSchool, critical)
	if amount > (critical and 1400 or 700) then
		if not vulnerabilities[target] or vulnerabilities[target] ~= spellSchool then
			vulnerabilities[target] = spellSchool
			update_vulnerability(self)
		end
	end
end

local function check_target_vulns(self)
	local target = UnitGUID("target")
	local cid = self:GetCIDFromGUID(target)
	if not vulnMobs[cid] then
		return
	end

	local spellId = select(10, DBM:UnitBuff("target", 22277, 22280, 22278, 22279, 22281)) or 0
	local vulnSchool = vulnSpells[spellId]
	if vulnSchool then
		return check_spell_damage(self, target, 10000, vulnSchool)
	end
end

function mod:OnCombatStart()
	table.wipe(vulnerabilities)
	if self.Options.WarnVulnerable then--Don't register high cpu combat log events if option isn't enabled
		self:RegisterShortTermEvents(
			"SPELL_DAMAGE",
			"PLAYER_TARGET_CHANGED"
		)
		check_target_vulns(self)
		if self.Options.NPAuraOnVulnerable then
			DBM:FireEvent("BossMod_EnableHostileNameplates")
		end
	end
end

function mod:OnCombatEnd()
	table.wipe(vulnerabilities)
	self:UnregisterShortTermEvents()
	if self.Options.NPAuraOnVulnerable  then
		DBM.Nameplate:Hide(true, nil, nil, nil, true, true)--isGUID, unit, spellId, texture, force, isHostile, isFriendly
	end
end

function mod:SPELL_DAMAGE(_, _, _, _, destGUID, _, _, _, _, _, spellSchool, amount, _, _, _, _, _, critical)
	check_spell_damage(self, destGUID, amount, spellSchool, critical)
end

function mod:PLAYER_TARGET_CHANGED()
	check_target_vulns(self)
	if self:AntiSpam(3, 1) then--if player is a rapid target tabber (such as dotter), don't spam them
		update_vulnerability(self)
	end
end
