-- Profile object:

local Profile = {
	--[[
		Data = {}, -- [table] -- Loaded once after ProfileStore:LoadProfileAsync() finishes
		MetaData = {}, -- [table] -- Updated with every auto-save
		GlobalUpdates = GlobalUpdates, -- [GlobalUpdates]
		
		_profile_store = ProfileStore, -- [ProfileStore]
		_profile_key = "", -- [string]
		
		_release_listeners = [ScriptSignal] / nil, -- [table / nil]
		_hop_ready_listeners = [ScriptSignal] / nil, -- [table / nil]
		_hop_ready = false,
		
		_view_mode = true / nil, -- [bool] or nil
		
		_load_timestamp = os.clock(),
		
		_is_user_mock = false, -- ProfileStore.Mock
		_mock_key_info = {},
	--]]
}
Profile.__index = Profile

function Profile:IsActive() --> [bool]
	local loaded_profiles = self._is_user_mock == true and self._profile_store._mock_loaded_profiles or self._profile_store._loaded_profiles
	return loaded_profiles[self._profile_key] == self
end

function Profile:GetMetaTag(tag_name) --> value
	local meta_data = self.MetaData
	if meta_data == nil then
		return nil
		-- error("[ProfileService]: This Profile hasn't been loaded before - MetaData not available")
	end
	return self.MetaData.MetaTags[tag_name]
end

function Profile:SetMetaTag(tag_name, value)
	if type(tag_name) ~= "string" then
		error("[ProfileService]: tag_name must be a string")
	elseif string.len(tag_name) == 0 then
		error("[ProfileService]: Invalid tag_name")
	end
	self.MetaData.MetaTags[tag_name] = value
end

function Profile:Reconcile()
	ReconcileTable(self.Data, self._profile_store._profile_template)
end

function Profile:ListenToRelease(listener) --> [ScriptConnection] (place_id / nil, game_job_id / nil)
	if type(listener) ~= "function" then
		error("[ProfileService]: Only a function can be set as listener in Profile:ListenToRelease()")
	end
	if self._view_mode == true then
		return {Disconnect = function() end}
	end
	if self:IsActive() == false then
		-- Call release listener immediately if profile is expired
		local place_id
		local game_job_id
		local active_session = self.MetaData.ActiveSession
		if active_session ~= nil then
			place_id = active_session[1]
			game_job_id = active_session[2]
		end
		listener(place_id, game_job_id)
		return {Disconnect = function() end}
	else
		return self._release_listeners:Connect(listener)
	end
end

function Profile:Save()
	if self._view_mode == true then
		error("[ProfileService]: Can't save Profile in view mode - Should you be calling :OverwriteAsync() instead?")
	end
	if self:IsActive() == false then
		warn("[ProfileService]: Attempted saving an inactive profile "
			.. self:Identify() .. "; Traceback:\n" .. debug.traceback())
		return
	end
	-- Reject save request if a save is already pending in the queue - this will prevent the user from
	--	unecessary API request spam which we could not meaningfully execute anyways!
	if IsCustomWriteQueueEmptyFor(self._profile_store._profile_store_lookup, self._profile_key) == true then
		-- We don't want auto save to trigger too soon after manual saving - this will reset the auto save timer:
		RemoveProfileFromAutoSave(self)
		AddProfileToAutoSave(self)
		-- Call save function in a new thread:
		task.spawn(SaveProfileAsync, self)
	end
end

function Profile:Release()
	if self._view_mode == true then
		return
	end
	if self:IsActive() == true then
		task.spawn(SaveProfileAsync, self, true) -- Call save function in a new thread with release_from_session = true
	end
end

function Profile:ListenToHopReady(listener) --> [ScriptConnection] ()
	if type(listener) ~= "function" then
		error("[ProfileService]: Only a function can be set as listener in Profile:ListenToHopReady()")
	end
	if self._view_mode == true then
		return {Disconnect = function() end}
	end
	if self._hop_ready == true then
		task.spawn(listener)
		return {Disconnect = function() end}
	else
		return self._hop_ready_listeners:Connect(listener)
	end
end

function Profile:AddUserId(user_id) -- Associates user_id with profile (GDPR compliance)

	if type(user_id) ~= "number" or user_id % 1 ~= 0 then
		warn("[ProfileService]: Invalid UserId argument for :AddUserId() ("
			.. tostring(user_id) .. "); Traceback:\n" .. debug.traceback())
		return
	end

	if user_id < 0 and self._is_user_mock ~= true and UseMockDataStore ~= true then
		return -- Avoid giving real Roblox APIs negative UserId's
	end

	if table.find(self.UserIds, user_id) == nil then
		table.insert(self.UserIds, user_id)
	end
	
end

function Profile:RemoveUserId(user_id) -- Unassociates user_id with profile (safe function)

	if type(user_id) ~= "number" or user_id % 1 ~= 0 then
		warn("[ProfileService]: Invalid UserId argument for :RemoveUserId() ("
			.. tostring(user_id) .. "); Traceback:\n" .. debug.traceback())
		return
	end
	
	local index = table.find(self.UserIds, user_id)

	if index ~= nil then
		table.remove(self.UserIds, index)
	end

end

function Profile:Identify() --> [string]
	return IdentifyProfile(
		self._profile_store._profile_store_name,
		self._profile_store._profile_store_scope,
		self._profile_key
	)
end

function Profile:ClearGlobalUpdates() -- Clears all global updates data from a profile payload

	if self._view_mode ~= true then
		error("[ProfileService]: :ClearGlobalUpdates() can only be used in view mode")
	end

	local global_updates_object = {
		_updates_latest = {0, {}},
		_profile = self,
	}
	setmetatable(global_updates_object, GlobalUpdates)

	self.GlobalUpdates = global_updates_object

end

function Profile:OverwriteAsync() -- Saves the profile to the DataStore and removes the session lock

	if self._view_mode ~= true then
		error("[ProfileService]: :OverwriteAsync() can only be used in view mode")
	end

	SaveProfileAsync(self, nil, true)

end