-----------------------------------------------------------------------
-- AddOn namespace.
-----------------------------------------------------------------------
local LibStub = _G.LibStub
local ADDON_NAME, private = ...

local RSContainerPOI = private.NewLib("RareScannerContainerPOI")

-- Locales
local AL = LibStub("AceLocale-3.0"):GetLocale("RareScanner");

-- RareScanner database libraries
local RSContainerDB = private.ImportLib("RareScannerContainerDB")
local RSGeneralDB = private.ImportLib("RareScannerGeneralDB")
local RSConfigDB = private.ImportLib("RareScannerConfigDB")

-- RareScanner internal libraries
local RSConstants = private.ImportLib("RareScannerConstants")
local RSLogger = private.ImportLib("RareScannerLogger")
local RSTimeUtils = private.ImportLib("RareScannerTimeUtils")
local RSUtils = private.ImportLib("RareScannerUtils")

-- RareScanner services
local RSRecentlySeenTracker = private.ImportLib("RareScannerRecentlySeenTracker")


---============================================================================
-- Not discovered entities
--- In order to avoid long process time, it caches this list on load
---============================================================================

local notDiscoveredContainerIDs = {}

function RSContainerPOI.InitializeNotDiscoveredContainers()
	for containerID, _ in pairs (RSContainerDB.GetAllInternalContainerInfo()) do
		if (not RSGeneralDB.GetAlreadyFoundEntity(containerID)) then
			notDiscoveredContainerIDs[containerID] = true
		end
	end
end

local function RemoveNotDiscoveredContainer(containerID)
	if (containerID) then
		notDiscoveredContainerIDs[containerID] = nil
	end
end

---============================================================================
-- Container Map POIs
---- Manage adding Container icons to the world map and minimap
---============================================================================

function RSContainerPOI.GetContainerPOI(containerID, mapID, containerInfo, alreadyFoundInfo)
	local POI = {}
	POI.entityID = containerID
	POI.isContainer = true
	POI.grouping = true
	POI.name = RSContainerDB.GetContainerName(containerID) or AL["CONTAINER"]
	POI.mapID = mapID
	POI.foundTime = alreadyFoundInfo and alreadyFoundInfo.foundTime
	POI.isDiscovered = POI.isOpened or alreadyFoundInfo ~= nil
	
	if (containerInfo) then
		POI.worldmap = containerInfo.worldmap
	end
	
	-- Coordinates
	if (alreadyFoundInfo and alreadyFoundInfo.mapID == mapID) then
		POI.x = alreadyFoundInfo.coordX
		POI.y = alreadyFoundInfo.coordY
	else
		POI.x, POI.y = RSContainerDB.GetInternalContainerCoordinates(containerID, mapID)
	end

	-- Textures
	if (POI.isOpened) then
		POI.Texture = RSConstants.BLUE_CONTAINER_TEXTURE
	elseif (RSRecentlySeenTracker.IsRecentlySeen(containerID, POI.x, POI.y)) then
		POI.Texture = RSConstants.PINK_CONTAINER_TEXTURE
	elseif (not POI.isDiscovered) then
		POI.Texture = RSConstants.RED_CONTAINER_TEXTURE
	else
		POI.Texture = RSConstants.NORMAL_CONTAINER_TEXTURE
	end

	return POI
end

local function IsContainerPOIFiltered(containerID, mapID, zoneQuestID, onWorldMap, onMinimap)
	local name = RSContainerDB.GetContainerName(containerID) or AL["CONTAINER"]
	
	-- Skip if part of a disabled event
	if (RSContainerDB.IsDisabledEvent(containerID)) then
		RSLogger:PrintDebugMessageEntityID(containerID, string.format("Saltado Contenedor [%s]: Parte de un evento desactivado.", containerID))
		return true
	end

	-- Skip if the entity is filtered
	if (RSConfigDB.IsContainerFiltered(containerID) or RSConfigDB.IsContainerFilteredOnlyWorldmap(containerID)) then
		RSLogger:PrintDebugMessageEntityID(containerID, string.format("Saltado Contenedor [%s]: Filtrado en opciones (filtro completo o mapa del mundo).", containerID))
		return true
	end

	-- Skip if the entity appears only while a quest event is going on and it isnt active
	if (zoneQuestID) then
		local active = false
		for _, questID in ipairs(zoneQuestID) do
			if (C_TaskQuest.IsActive(questID) or C_QuestLog.IsQuestFlaggedCompleted(questID)) then
				active = true
				break
			end
		end

		if (not active) then
			RSLogger:PrintDebugMessageEntityID(containerID, string.format("Saltado Contenedor [%s]: Evento asociado no esta activo.", containerID))
			return true
		end
	end

	return false
end

function RSContainerPOI.GetMapNotDiscoveredContainerPOIs(mapID, onWorldMap, onMinimap)
	-- Skip if not showing container icons
	if (not RSConfigDB.IsShowingContainers()) then
		return
	end
	
	-- Skip if not showing not discovered icons
	if (not RSConfigDB.IsShowingNotDiscoveredContainers()) then
		return
	end

	local POIs = {}
	for containerID, _ in pairs(notDiscoveredContainerIDs) do
		local filtered = false
		local containerInfo = RSContainerDB.GetInternalContainerInfo(containerID)

		-- Skip if it was discovered in this session
		if (RSGeneralDB.GetAlreadyFoundEntity(containerID)) then
			RemoveNotDiscoveredContainer(containerID)
			RSLogger:PrintDebugMessageEntityID(containerID, string.format("Saltado Contenedor N/D [%s]: Ya no es 'no descubierto'.", containerID))
			filtered = true
		end

		-- Skip if the entity belong to a different mapID/artID that the one displaying
		if (not filtered and not RSContainerDB.IsInternalContainerInMap(containerID, mapID)) then
			RSLogger:PrintDebugMessageEntityID(containerID, string.format("Saltado Contenedor N/D [%s]: En distinta zona (no descubierto).", containerID))
			filtered = true
		end

		-- Skip if common filters
		if (not filtered and not IsContainerPOIFiltered(containerID, mapID, containerInfo.zoneQuestId, onWorldMap, onMinimap)) then
			tinsert(POIs, RSContainerPOI.GetContainerPOI(containerID, mapID, containerInfo))
		end
	end

	return POIs
end

function RSContainerPOI.GetMapAlreadyFoundContainerPOI(containerID, alreadyFoundInfo, mapID, onWorldMap, onMinimap)
	-- Skip if not showing container icons
	if (not RSConfigDB.IsShowingContainers()) then
		RSLogger:PrintDebugMessageEntityID(containerID, string.format("Saltado Contenedor [%s]: Iconos de contenedores deshabilitado.", containerID))
		return
	end

	local containerInfo = RSContainerDB.GetInternalContainerInfo(containerID)

	-- Skip if the entity belongs to a different map that the one displaying
	-- First checks with the already found information
	local correctMap = false
	if (RSGeneralDB.IsAlreadyFoundEntityInZone(containerID, mapID)) then
		correctMap = true
	end

	-- Then checks with the internal found information just in case its a multizone
	-- Its possible that the player is opening a map where this container can show up, but the last time seen was in a different map
	if (not correctMap and (not containerInfo or not RSContainerDB.IsInternalContainerInMap(containerID, mapID))) then
		RSLogger:PrintDebugMessageEntityID(containerID, string.format("Saltando Contenedor [%s]: En distinta zona.", containerID))
		return
	end

	-- Skip if common filters
	local zoneQuestID
	if (containerInfo) then
		zoneQuestID = containerInfo.zoneQuestId
	end

	if (not IsContainerPOIFiltered(containerID, mapID, zoneQuestID, onWorldMap, onMinimap)) then
		return RSContainerPOI.GetContainerPOI(containerID, mapID, containerInfo, alreadyFoundInfo)
	end
end
