local addonname, data = ...
---@cast data HeimdallData
---@cast addonname string

data.DeathReporter = {}
function data.DeathReporter.Init()
	if not data.config.deathReporter.enabled then return end
	---@type table<string, number>
	local recentDeaths = {}
	---@type table<string, number>
	local notifyTimers = {}

	---@param source string
	---@param destination string
	---@param spellName string
	---@param overkill number
	local function RegisterDeath(source, destination, spellName, overkill)
		if recentDeaths[destination]
			and GetTime() - recentDeaths[destination] < data.config.deathReporter.throttle then
			return
		end
		recentDeaths[destination] = GetTime()
		local timer = C_Timer.NewTimer(1, function()
			local zone = data.config.deathReporter.zoneOverride
			if not zone then
				zone = string.format("%s (%s)", GetZoneText(), GetSubZoneText())
			end

			local text = string.format("%s killed %s with %s in %s",
				tostring(source),
				tostring(destination),
				tostring(spellName),
				tostring(zone))

			---@type Message
			local msg = {
				channel = "CHANNEL",
				data = data.config.deathReporter.notifyChannel,
				message = text,
			}
			table.insert(data.messenger.queue, msg)

			if data.config.deathReporter.doWhisper then
				for _, name in pairs(data.config.whisperNotify) do
					local msg = {
						channel = "WHISPER",
						data = name,
						message = text,
					}
					table.insert(data.messenger.queue, msg)
				end
			end
			notifyTimers[destination] = nil
		end)
		notifyTimers[destination] = timer
	end

	local cleuFrame = CreateFrame("Frame")
	cleuFrame:RegisterEvent("COMBAT_LOG_EVENT_UNFILTERED")
	cleuFrame:SetScript("OnEvent", function(self, event, ...)
		local overkill, err = CLEUParser.GetOverkill(...)
		if not err and overkill > 0 then
			local source, err = CLEUParser.GetSourceName(...)
			if err then source = "unknown" end
			local destination, err = CLEUParser.GetDestName(...)
			if err then destination = "unknown" end
			local spellName, err = CLEUParser.GetSpellName(...)
			if err then spellName = "unknown" end
			local sourceGUID, err = CLEUParser.GetSourceGUID(...)
			if err or not string.match(sourceGUID, "Player") then return end
			local destinationGUID, err = CLEUParser.GetDestGUID(...)
			if err or not string.match(destinationGUID, "Player") then return end
			RegisterDeath(source, destination, spellName, overkill)
		end
	end)

	local systemMessageFrame = CreateFrame("Frame")
	systemMessageFrame:RegisterEvent("CHAT_MSG_SYSTEM")
	systemMessageFrame:SetScript("OnEvent", function(self, event, msg)
		local source, destination = string.match(msg, "(.+) has defeated (.+) in a duel")
		if source and destination then
			print(string.format("Cancelling death reports for %s and %s", source, destination))
			if notifyTimers[source] then notifyTimers[source]:Cancel() end
			if notifyTimers[destination] then notifyTimers[destination]:Cancel() end
		end
	end)
end