-- src/ServerScriptService/BiomeGeneratorManager.server.lua
-- Simple flat baseplate-style world with colored biome regions

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local CollectionService = game:GetService("CollectionService")

local BiomeConfig = require(ReplicatedStorage:WaitForChild("Shared"):WaitForChild("BiomeConfig"))
local GameConfig = require(ReplicatedStorage:WaitForChild("Shared"):WaitForChild("GameConfig"))

-- Create folders
local biomeZonesFolder = Instance.new("Folder")
biomeZonesFolder.Name = "BiomeZones"
biomeZonesFolder.Parent = workspace

local worldFolder = Instance.new("Folder")
worldFolder.Name = "WorldStructures"
worldFolder.Parent = workspace

-- Biome color map (distinct flat colors, no grass)
local BiomeColors = {
	Forest = Color3.fromRGB(80, 130, 60),
	PineWoods = Color3.fromRGB(50, 100, 45),
	Swamp = Color3.fromRGB(65, 85, 50),
	Desert = Color3.fromRGB(210, 190, 130),
	Volcanic = Color3.fromRGB(70, 40, 35),
	IcePeak = Color3.fromRGB(190, 210, 230),
	TropicalRainforest = Color3.fromRGB(35, 110, 40),
	Meadow = Color3.fromRGB(140, 180, 80),
}

local function createBiomePlate(biomeName, biomeData)
	local region = biomeData.Region
	local regionWidth = region.MaxX - region.MinX
	local regionDepth = region.MaxZ - region.MinZ
	local centerX = (region.MinX + region.MaxX) / 2
	local centerZ = (region.MinZ + region.MaxZ) / 2

	-- Flat baseplate for this biome
	local plate = Instance.new("Part")
	plate.Name = biomeName .. "_Plate"
	plate.Size = Vector3.new(regionWidth, 1, regionDepth)
	plate.Position = Vector3.new(centerX, -0.5, centerZ) -- Top surface at Y=0
	plate.Anchored = true
	plate.Material = Enum.Material.SmoothPlastic
	plate.Color = BiomeColors[biomeName] or Color3.fromRGB(100, 100, 100)
	plate.TopSurface = Enum.SurfaceType.Smooth
	plate.BottomSurface = Enum.SurfaceType.Smooth
	plate.Parent = biomeZonesFolder

	-- Invisible detection zone (taller, for biome detection)
	local zonePart = Instance.new("Part")
	zonePart.Name = biomeName .. "_Zone"
	zonePart.Size = Vector3.new(regionWidth, 50, regionDepth)
	zonePart.Position = Vector3.new(centerX, 25, centerZ)
	zonePart.Anchored = true
	zonePart.CanCollide = false
	zonePart.Transparency = 1
	zonePart:SetAttribute("BiomeName", biomeName)
	CollectionService:AddTag(zonePart, "BiomeZone")
	zonePart.Parent = biomeZonesFolder

	-- Hazard zone if applicable
	if biomeData.HazardType then
		local hazardZone = Instance.new("Part")
		hazardZone.Name = biomeName .. "_Hazard"
		hazardZone.Size = Vector3.new(regionWidth * 0.8, 20, regionDepth * 0.8)
		hazardZone.Position = Vector3.new(centerX, 10, centerZ)
		hazardZone.Anchored = true
		hazardZone.CanCollide = false
		hazardZone.Transparency = 0.95
		hazardZone.BrickColor = BrickColor.new("Bright red")

		if biomeData.HazardAttribute then
			hazardZone:SetAttribute("HazardType", biomeData.HazardAttribute)
		end

		CollectionService:AddTag(hazardZone, biomeData.HazardType)
		hazardZone.Parent = biomeZonesFolder
	end

	-- Biome label sign at center
	local signPart = Instance.new("Part")
	signPart.Name = biomeName .. "_Sign"
	signPart.Size = Vector3.new(8, 4, 0.5)
	signPart.Position = Vector3.new(centerX, 4, centerZ)
	signPart.Anchored = true
	signPart.Material = Enum.Material.Wood
	signPart.BrickColor = BrickColor.new("Reddish brown")
	signPart.Parent = biomeZonesFolder

	local signGui = Instance.new("SurfaceGui")
	signGui.Face = Enum.NormalId.Front
	signGui.Parent = signPart

	local signLabel = Instance.new("TextLabel")
	signLabel.Size = UDim2.new(1, 0, 1, 0)
	signLabel.BackgroundTransparency = 1
	signLabel.Text = biomeName
	signLabel.TextColor3 = Color3.new(1, 1, 1)
	signLabel.TextScaled = true
	signLabel.Font = Enum.Font.GothamBold
	signLabel.Parent = signGui

	print("Biome plate created:", biomeName)
end

-- Create spawn platform (elevated slightly so it is distinct)
local function createSpawnPlatform()
	local platform = Instance.new("Part")
	platform.Name = "SpawnPlatform"
	platform.Size = Vector3.new(GameConfig.SpawnPlatformSize.X, 0.2, GameConfig.SpawnPlatformSize.Z)
	platform.Position = Vector3.new(GameConfig.SpawnPosition.X, 0.1, GameConfig.SpawnPosition.Z) -- rests slightly above biome plate
	platform.Anchored = true
	platform.Material = Enum.Material.SmoothPlastic
	platform.Color = Color3.fromRGB(160, 160, 165)
	platform.TopSurface = Enum.SurfaceType.Smooth
	platform.BottomSurface = Enum.SurfaceType.Smooth
	CollectionService:AddTag(platform, "SpawnPlatform")
	platform.Parent = worldFolder

	local spawn = Instance.new("SpawnLocation")
	spawn.Size = Vector3.new(6, 1, 6)
	spawn.Position = Vector3.new(GameConfig.SpawnPosition.X, 0.5, GameConfig.SpawnPosition.Z)
	spawn.Anchored = true
	spawn.CanCollide = false
	spawn.Transparency = 1
	spawn.Parent = worldFolder
end

-- World boundaries
local function createWorldBoundaries()
	local bounds = GameConfig.WorldBounds
	local height = 200
	local thickness = 5

	local walls = {
		{pos = Vector3.new(0, height/2, bounds.MinZ), size = Vector3.new(bounds.MaxX - bounds.MinX, height, thickness)},
		{pos = Vector3.new(0, height/2, bounds.MaxZ), size = Vector3.new(bounds.MaxX - bounds.MinX, height, thickness)},
		{pos = Vector3.new(bounds.MinX, height/2, 0), size = Vector3.new(thickness, height, bounds.MaxZ - bounds.MinZ)},
		{pos = Vector3.new(bounds.MaxX, height/2, 0), size = Vector3.new(thickness, height, bounds.MaxZ - bounds.MinZ)},
	}

	for i, wallData in ipairs(walls) do
		local wall = Instance.new("Part")
		wall.Name = "WorldBoundary_" .. i
		wall.Size = wallData.size
		wall.Position = wallData.pos
		wall.Anchored = true
		wall.Transparency = 1
		wall.CanCollide = true
		CollectionService:AddTag(wall, "WorldBoundary")
		wall.Parent = worldFolder
	end
end

-- Plot areas
local function createPlots()
	local plotsFolder = Instance.new("Folder")
	plotsFolder.Name = "Plots"
	plotsFolder.Parent = worldFolder

	for i, pos in ipairs(GameConfig.PlotPositions) do
		local plot = Instance.new("Part")
		plot.Name = "Plot_" .. i
		plot.Size = Vector3.new(200, 0.2, 200)
		plot.Position = Vector3.new(pos.X, 0.1, pos.Z) -- elevate slightly to prevent z-fighting
		plot.Anchored = true
		plot.Material = Enum.Material.SmoothPlastic
		plot.Color = Color3.fromRGB(90, 90, 95)
		plot.TopSurface = Enum.SurfaceType.Smooth
		plot.BottomSurface = Enum.SurfaceType.Smooth
		plot.Transparency = 1 -- fully invisible as requested
		CollectionService:AddTag(plot, "EmptyPlot")
		plot.Parent = plotsFolder


	end
end

-- Execute world generation
task.spawn(function()
	print("=== Timberbound Expeditions: World Generation Starting ===")

	createSpawnPlatform()
	createWorldBoundaries()
	createPlots()

	-- Create flat biome plates (no terrain, no elevation)
	for biomeName, biomeData in pairs(BiomeConfig.Biomes) do
		createBiomePlate(biomeName, biomeData)
	end

	print("=== World Generation Complete ===")
	_G.BiomeGenerationComplete = true
end)