local Packages = script.Parent.Parent.Parent

local RobloxComponentProps
local setInitialTags
local updateTags
local removeTags
local getInstancesForTag
local Tag

local JestGlobals = require(Packages.Dev.JestGlobals)
local beforeEach = JestGlobals.beforeEach
local jestExpect = JestGlobals.expect
local describe = JestGlobals.describe
local it = JestGlobals.it
local jest = JestGlobals.jest

describe("TestRenderer Tag Support", function()
	beforeEach(function()
		jest.resetModules()
		RobloxComponentProps = require(script.Parent.Parent.roblox.RobloxComponentProps)
		setInitialTags = RobloxComponentProps.setInitialTags
		updateTags = RobloxComponentProps.updateTags
		removeTags = RobloxComponentProps.removeTags
		getInstancesForTag = RobloxComponentProps.getInstancesForTag
		Tag = require(Packages.Shared).Tag
	end)

	it("should set initial tags for an instance", function()
		local rootContainer = "rootContainer1"
		local hostInstances = {
			{
				props = { [Tag] = "foo" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "bar" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "foo,bar" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "bar" },
				rootContainerInstance = rootContainer,
			},
		}

		for _, inst in hostInstances do
			setInitialTags(inst, "Instance", inst.props, inst.rootContainerInstance)
		end

		local fooTags = getInstancesForTag(rootContainer, "foo")
		jestExpect(#fooTags).toEqual(2)
		jestExpect(fooTags).toEqual({
			hostInstances[1],
			hostInstances[3],
		})

		local barTags = getInstancesForTag(rootContainer, "bar")
		jestExpect(#barTags).toEqual(3)
		jestExpect(barTags).toEqual({
			hostInstances[2],
			hostInstances[3],
			hostInstances[4],
		})
	end)

	it("should update tags", function()
		local rootContainer = "rootContainer1"
		local hostInstances = {
			{
				props = { [Tag] = "foo" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "bar" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "foo,bar" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "bar" },
				rootContainerInstance = rootContainer,
			},
		}

		for _, inst in hostInstances do
			setInitialTags(inst, "Instance", inst.props, inst.rootContainerInstance)
		end

		local newProps = {
			{ [Tag] = "foo,bar" },
			{ [Tag] = "baz" },
			{ [Tag] = "baz" },
			{ [Tag] = "bar" },
		}

		for i, inst in hostInstances do
			updateTags(inst, newProps[i], inst.props)
		end

		local fooTags = getInstancesForTag(rootContainer, "foo")
		jestExpect(#fooTags).toEqual(1)
		jestExpect(fooTags).toEqual({
			hostInstances[1],
		})

		local barTags = getInstancesForTag(rootContainer, "bar")
		jestExpect(#barTags).toEqual(2)
		jestExpect(barTags).toEqual({
			hostInstances[4],
			hostInstances[1],
		})

		local bazTags = getInstancesForTag(rootContainer, "baz")
		jestExpect(#bazTags).toEqual(2)
		jestExpect(bazTags).toEqual({
			hostInstances[2],
			hostInstances[3],
		})
	end)

	it("should remove tags", function()
		local rootContainer = "rootContainer1"
		local hostInstances = {
			{
				props = { [Tag] = "foo" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "bar" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "foo,bar" },
				rootContainerInstance = rootContainer,
			},
			{
				props = { [Tag] = "bar" },
				rootContainerInstance = rootContainer,
			},
		}

		for _, inst in hostInstances do
			setInitialTags(inst, "Instance", inst.props, inst.rootContainerInstance)
		end

		-- Children should have tags removed as well
		hostInstances[1]["children"] = {
			[2] = hostInstances[2],
			[3] = hostInstances[3],
		}

		removeTags(hostInstances[1])

		local fooTags = getInstancesForTag(rootContainer, "foo")
		jestExpect(#fooTags).toEqual(0)

		local barTags = getInstancesForTag(rootContainer, "bar")
		jestExpect(#barTags).toEqual(1)
		jestExpect(barTags).toEqual({
			hostInstances[4],
		})
	end)
end)