local modname = minetest.get_current_modname()
local S = minetest.get_translator(modname)
local modpath = minetest.get_modpath(modname)

mcl_structures = {}

dofile(modpath .. "/api.lua")
dofile(modpath .. "/shipwrecks.lua")
dofile(modpath .. "/desert_temple.lua")
dofile(modpath .. "/jungle_temple.lua")
dofile(modpath .. "/ocean_ruins.lua")
dofile(modpath .. "/witch_hut.lua")
dofile(modpath .. "/igloo.lua")
dofile(modpath .. "/woodland_mansion.lua")
dofile(modpath .. "/ruined_portal.lua")
dofile(modpath .. "/geode.lua")
dofile(modpath .. "/pillager_outpost.lua")
dofile(modpath .. "/end_spawn.lua")
dofile(modpath .. "/end_city.lua")


mcl_structures.register_structure("desert_well", {
	place_on = { "group:sand" },
	fill_ratio = 0.01,
	flags = "place_center_x, place_center_z",
	not_near = { "desert_temple_new" },
	solid_ground = true,
	sidelen = 4,
	chunk_probability = 600,
	y_max = mcl_vars.mg_overworld_max,
	y_min = 1,
	y_offset = -2,
	biomes = { "Desert" },
	filenames = { modpath .. "/schematics/mcl_structures_desert_well.mts" },
})

mcl_structures.register_structure("fossil", {
	place_on = { "group:material_stone", "group:sand" },
	fill_ratio = 0.01,
	flags = "place_center_x, place_center_z",
	solid_ground = true,
	sidelen = 13,
	chunk_probability = 1000,
	y_offset = function(pr) return (pr:next(1, 16) * -1) - 16 end,
	y_max = 15,
	y_min = mcl_vars.mg_overworld_min + 35,
	biomes = { "Desert" },
	filenames = {
		modpath .. "/schematics/mcl_structures_fossil_skull_1.mts", -- 4×5×5
		modpath .. "/schematics/mcl_structures_fossil_skull_2.mts", -- 5×5×5
		modpath .. "/schematics/mcl_structures_fossil_skull_3.mts", -- 5×5×7
		modpath .. "/schematics/mcl_structures_fossil_skull_4.mts", -- 7×5×5
		modpath .. "/schematics/mcl_structures_fossil_spine_1.mts", -- 3×3×13
		modpath .. "/schematics/mcl_structures_fossil_spine_2.mts", -- 5×4×13
		modpath .. "/schematics/mcl_structures_fossil_spine_3.mts", -- 7×4×13
		modpath .. "/schematics/mcl_structures_fossil_spine_4.mts", -- 8×5×13
	},
})

mcl_structures.register_structure("boulder", {
	filenames = {
		modpath .. "/schematics/mcl_structures_boulder_small.mts",
		modpath .. "/schematics/mcl_structures_boulder_small.mts",
		modpath .. "/schematics/mcl_structures_boulder_small.mts",
		modpath .. "/schematics/mcl_structures_boulder.mts",
		-- small boulder 3x as likely
	},
}, true) --is spawned as a normal decoration. this is just for /spawnstruct

mcl_structures.register_structure("ice_spike_small", {
	filenames = { modpath .. "/schematics/mcl_structures_ice_spike_small.mts" },
}, true) --is spawned as a normal decoration. this is just for /spawnstruct

mcl_structures.register_structure("ice_spike_large", {
	sidelen = 6,
	filenames = { modpath .. "/schematics/mcl_structures_ice_spike_large.mts" },
}, true) --is spawned as a normal decoration. this is just for /spawnstruct


---Debug command
---@param dir Vector
---@return '"0"'|'"90"'|'"180"'|'"270"'
local function dir_to_rotation(dir)
	local ax, az = math.abs(dir.x), math.abs(dir.z)
	if ax > az then
		if dir.x < 0 then
			return "270"
		end
		return "90"
	end
	if dir.z < 0 then
		return "180"
	end
	return "0"
end

minetest.register_chatcommand("spawnstruct", {
	params = "dungeon",
	description = S("Generate a pre-defined structure near your position."),
	privs = { debug = true },
	func = function(name, param)
		local player = minetest.get_player_by_name(name)

		if not player then
			return false, S("Player isn't online")
		end

		local pos = player:get_pos()
		pos = vector.round(pos)

		local dir = minetest.yaw_to_dir(player:get_look_horizontal())

		local rot = dir_to_rotation(dir)
		local pr = PseudoRandom(pos.x + pos.y + pos.z)

		local errord = false
		local message = S("Structure placed.")
		local uknown_struct_message = S("Error: Unknown structure type. Please use “/spawnstruct <type>”.") ..
			"\n" .. S("Use /help spawnstruct to see a list of avaiable types.")

		if param == "dungeon" and mcl_dungeons and mcl_dungeons.spawn_dungeon then
			mcl_dungeons.spawn_dungeon(pos, rot, pr)
		else
			if mcl_structures.registered_structures[param] then
				mcl_structures.place_structure(pos, mcl_structures.registered_structures[param], pr, math.random(), rot)
			else
				message = uknown_struct_message
				errord = true
			end
		end

		if errord then
			return false, message
		else
			return true, message
		end
	end
})
minetest.register_on_mods_loaded(function()
	local p = ""
	for n, _ in pairs(mcl_structures.registered_structures) do
		p = p .. " | " .. n
	end
	minetest.registered_chatcommands["spawnstruct"].params = minetest.registered_chatcommands["spawnstruct"].params .. p
end)