-- Node definitions for Homedecor doors

local S = homedecor.gettext

-- doors

local function isSolid(pos,adj)
    local adj = {x=adj[1],y=adj[2],z=adj[3]}
    local node = minetest.get_node(vector.add(pos,adj))
    if node then
        local idef = minetest.registered_nodes[minetest.get_node(vector.add(pos,adj)).name]
        if idef then
            return idef.walkable
        end
    end
    return false
end

local function countSolids(pos,node,level)
    local solids = 0
    for x = -1, 1 do
        for z = -1, 1 do
            local y = (node.param2 == 5) and -level or level
            -- special cases when x == z == 0
            if x == 0 and z == 0 then
                if level == 1 then
                    -- when looking past the trap door, cannot be solid in center
                    if isSolid(pos,{x,y,z}) then
                        return false
                    end
                    -- no else. it doesn't matter if x == y == z is solid, that's us.
                end
            elseif isSolid(pos,{x,y,z}) then
                solids = solids + 1
            end
        end
    end
    return solids
end

local function calculateClosed(pos)
    local node = minetest.get_node(pos)
    -- the door is considered closed if it is closing off something.

    local solids = 0
    local direction = node.param2 % 6
    local isTrap = direction == 0 or direction == 5
    if isTrap then
        -- the trap door is considered closed when all nodes on its sides are solid
        -- or all nodes in the 3x3 above/below it are solid except the center
        for level = 0, 1 do
            local fail = false
            local solids = countSolids(pos,node,level)
            if solids == 8 then
                return true
            end
        end
        return false
    else
        -- the door is considered closed when the nodes on its sides are solid
        -- or the 3 nodes in its facing direction are solid nonsolid solid
        -- if the door has two levels (i.e. not a gate) then this must
        -- be true for the top node as well.

        -- sorry I dunno the math to figure whether to x or z
        if direction == 1 or direction == 2 then
            if isSolid(pos,{0,0,-1}) and isSolid(pos,{0,0,1}) then
                if string.find(node.name,'_bottom_') then
                    return calculateClosed({x=pos.x,y=pos.y+1,z=pos.z})
                else
                    return true
                end
            end
            local x = (direction == 1) and 1 or -1
            if isSolid(pos,{x,0,-1}) and not isSolid(pos,{x,0,0}) and isSolid(pos,{x,0,1}) then
                if string.find(node.name,'_bottom_') then
                    return calculateClosed({x=pos.x,y=pos.y+1,z=pos.z})
                else
                    return true
                end
            end
            return false
        else
            -- direction == 3 or 4
            if isSolid(pos,{-1,0,0}) and isSolid(pos,{1,0,0}) then
                if string.find(node.name,'_bottom_') then
                    return calculateClosed({x=pos.x,y=pos.y+1,z=pos.z})
                else
                    return true
                end
            end
            local z = (direction == 3) and 1 or -1
            if isSolid(pos,{-1,0,z}) and not isSolid(pos,{0,0,z}) and isSolid(pos,{1,0,z}) then
                if string.find(node.name,'_bottom_') then
                    return calculateClosed({x=pos.x,y=pos.y+1,z=pos.z})
                else
                    return true
                end
            end
            return false
        end
        error("What direction is this???",direction)
    end
end

-- isClosed flag, is 0 or 1 0 = open, 1 = closed
local function getClosed(pos)
    local isClosed = minetest.get_meta(pos):get_string('closed')
    if isClosed=='' then
	return calculateClosed(pos)
    else
        isClosed = tonumber(isClosed)
        -- may be closed or open (1 or 0)
        return isClosed == 1
    end
end

local function addDoorNode(pos,def,isClosed)
    minetest.set_node(pos, def)
    minetest.get_meta(pos):set_int('closed', isClosed and 1 or 0)
end

local door_model_list = {
	{	name = "closet_mahogany",
		description = S("Mahogany Closet Door"),
		mesh = "homedecor_door_closet.obj"
	},

	{	name = "closet_oak",
		description = S("Oak Closet Door"),
		mesh = "homedecor_door_closet.obj"
	},

	{	name = "exterior_fancy",
		description = S("Fancy Wood/Glass Door"),
		mesh = "homedecor_door_fancy.obj",
		tiles = {
			"homedecor_door_exterior_fancy.png",
			"homedecor_door_exterior_fancy_insert.png"
		},			
		usealpha = true
	},

	{	name = "glass",
		description = S("Glass Office Door"),
		mesh = "homedecor_door_plain.obj"
	},

	{	name = "wood_glass_oak",
		description = S("Glass and Wood, Oak-colored"),
		mesh = "homedecor_door_wood_glass.obj",
		tiles = {
			"homedecor_door_wood_glass_oak.png",
			"homedecor_door_wood_glass_insert.png",
		}
	},

	{	name = "wood_glass_mahogany",
		description = S("Glass and Wood, Mahogany-colored"),
		mesh = "homedecor_door_wood_glass.obj",
		tiles = {
			"homedecor_door_wood_glass_mahogany.png",
			"homedecor_door_wood_glass_insert.png",
		}
	},

	{	name = "wood_glass_white",
		description = S("Glass and Wood, White"),
		mesh = "homedecor_door_wood_glass.obj",
		tiles = {
			"homedecor_door_wood_glass_white.png",
			"homedecor_door_wood_glass_insert.png",
		}
	},

	{	name = "wood_plain",
		description = S("Plain Wooden Door"),
		mesh = "homedecor_door_plain.obj"
	},

	{	name = "bedroom",
		description = S("White Bedroom Door"),
		mesh = "homedecor_door_plain.obj"
	},

	{	name = "wrought_iron",
		description = S("Wrought Iron Gate/Door"),
		mesh = "homedecor_door_wrought_iron.obj"
	},

	{	name = "woodglass",
		description = S("Wooden door with glass insert"),
		mesh = "homedecor_door_woodglass_typea.obj",
		tiles = {
			"homedecor_door_woodglass_typea.png",
			"homedecor_door_woodglass_typea_insert.png",
		},
		usealpha = true
	},

	{	name = "woodglass2",
		description = S("Wooden door with glass insert, type 2"),
		mesh = "homedecor_door_plain.obj",
		usealpha = true
	},
}

local def_selbox = {
	type = "fixed",
	fixed = { -0.5, -0.5, 0.375, 0.5, 1.5, 0.5 }
}

local sides = {"left", "right"}

for i in ipairs(sides) do
	local side = sides[i]

	for _, door_model in ipairs(door_model_list) do

		local doorname = door_model.name

		local selbox = door_model.selectbox or def_selbox
		local colbox = door_model.collisionbox or door_model.selectbox or def_selbox
		local mesh = door_model.mesh
		local groups = {snappy = 3}

		if side == "right" then
			mesh = string.gsub(door_model.mesh, ".obj", "_right.obj")
			groups = {snappy = 3, not_in_creative_inventory = 1}
		end

		minetest.register_node("homedecor:door_"..doorname.."_"..side, {
			description = door_model.description.." "..S("(%s-opening)"):format(side),
			drawtype = "mesh",
			mesh = mesh,
			tiles = door_model.tiles or { "homedecor_door_"..doorname..".png" },
			inventory_image = "homedecor_door_"..doorname.."_inv.png",
			wield_image = "homedecor_door_"..doorname.."_inv.png",
			paramtype = "light",
			paramtype2 = "facedir",
			groups = groups,
			sounds = default.node_sound_wood_defaults(),
			use_texture_alpha = door_model.usealpha,
			selection_box = selbox,
			collision_box = colbox,
			on_rotate = screwdriver.rotate_simple,
			on_place = function(itemstack, placer, pointed_thing)
				return homedecor.stack_wing(itemstack, placer, pointed_thing,
					"homedecor:door_"..doorname.."_left", "air",
					"homedecor:door_"..doorname.."_right", "air")
			end,
			on_construct = function(pos)
				minetest.get_meta(pos):set_int("closed", 1)
			end,
			on_rightclick = function(pos, node, clicker)
				homedecor.flip_door(pos, node, clicker, doorname, side)
			end,
		    -- both left and right doors may be used for open or closed doors
		    -- so they have to have both action_on and action_off and just
		    -- check when that action is invoked if to continue

		    on_punch = function(pos, node, puncher)
		        minetest.get_meta(pos):set_string('closed',nil)
		    end,
			drop = "homedecor:door_"..doorname.."_left",
		    mesecons = {
		        effector = {
		            action_on = function(pos,node)
		                local isClosed = getClosed(pos)
		                if isClosed then
		                    homedecor.flip_door(pos,node,nil,doorname,side,isClosed)
		                end
		            end,
		            action_off = function(pos,node)
		                local isClosed = getClosed(pos)
		                if not isClosed then
		                    homedecor.flip_door(pos,node,nil,doorname,side,isClosed)
		                end
		            end
		        }
		    }
		})

		minetest.register_alias("homedecor:door_"..doorname.."_top_"..side, "air")
		minetest.register_alias("homedecor:door_"..doorname.."_bottom_"..side, "homedecor:door_"..doorname.."_"..side)

	end

	minetest.register_alias("homedecor:door_wood_glass_top_"..side, "air")
	minetest.register_alias("homedecor:door_wood_glass_bottom_"..side, "homedecor:door_wood_glass_oak_"..side)

end

-- Gates

local gates_list = { "picket", "picket_white", "barbed_wire", "chainlink" }
local gate_names = { "Unpainted Picket", "White Picket", "Barbed Wire", "Chainlink" }

local gate_models_closed = {
	{{ -0.5, -0.5, 0.498, 0.5, 0.5, 0.498 }},

	{{ -0.5, -0.5, 0.498, 0.5, 0.5, 0.498 }},

	{{ -8/16, -8/16, 6/16, -6/16,  8/16,  8/16 },	-- left post
	 {  6/16, -8/16, 6/16,  8/16,  8/16,  8/16 }, 	-- right post
	 { -8/16,  7/16, 13/32, 8/16,  8/16, 15/32 },	-- top piece
	 { -8/16, -8/16, 13/32, 8/16, -7/16, 15/32 },	-- bottom piece
	 { -6/16, -8/16,  7/16, 6/16,  8/16,  7/16 }},	-- the wire

	{{ -8/16, -8/16,  6/16, -7/16,  8/16,  8/16 },	-- left post
	 {  6/16, -8/16,  6/16,  8/16,  8/16,  8/16 }, 	-- right post
	 { -8/16,  7/16, 13/32,  8/16,  8/16, 15/32 },	-- top piece
	 { -8/16, -8/16, 13/32,  8/16, -7/16, 15/32 },	-- bottom piece
	 { -8/16, -8/16,  7/16,  8/16,  8/16,  7/16 },	-- the chainlink itself
	 { -8/16, -3/16,  6/16, -6/16,  3/16,  8/16 }}	-- the lump representing the lock
}

local gate_models_open = {
	{{ 0.498, -0.5, -0.5, 0.498, 0.5, 0.5 }},

	{{ 0.498, -0.5, -0.5, 0.498, 0.5, 0.5 }},

	{{  6/16, -8/16, -8/16,  8/16,  8/16, -6/16 },	-- left post
	 {  6/16, -8/16,  6/16,  8/16,  8/16,  8/16 }, 	-- right post
	 { 13/32,  7/16, -8/16, 15/32,  8/16,  8/16 },	-- top piece
	 { 13/32, -8/16, -8/16, 15/32, -7/16,  8/16 },	-- bottom piece
	 {  7/16, -8/16, -6/16,  7/16,  8/16,  6/16 }},	-- the wire

	{{  6/16, -8/16, -8/16,  8/16,  8/16, -7/16 },	-- left post
	 {  6/16, -8/16,  6/16,  8/16,  8/16,  8/16 }, 	-- right post
	 { 13/32,  7/16, -8/16, 15/32,  8/16,  8/16 },	-- top piece
	 { 13/32, -8/16, -8/16, 15/32, -7/16,  8/16 },	-- bottom piece
	 {  7/16, -8/16, -8/16,  7/16,  8/16,  8/16 },	-- the chainlink itself
	 {  6/16, -3/16, -8/16,  8/16,  3/16, -6/16 }}	-- the lump representing the lock
}

for i in ipairs(gates_list) do

	local gate=gates_list[i]

	local tiles = {
		"homedecor_gate_"..gate.."_tb.png",
		"homedecor_gate_"..gate.."_tb.png",
		"homedecor_gate_"..gate.."_lr.png",
		"homedecor_gate_"..gate.."_lr.png",
		"homedecor_gate_"..gate.."_fb.png^[transformFX",
		"homedecor_gate_"..gate.."_fb.png"
	}

	if gate == "barbed_wire" then
		tiles = {
			"homedecor_gate_barbed_wire_edges.png",
			"homedecor_gate_barbed_wire_edges.png",
			"homedecor_gate_barbed_wire_edges.png",
			"homedecor_gate_barbed_wire_edges.png",
			"homedecor_gate_barbed_wire_fb.png^[transformFX",
			"homedecor_gate_barbed_wire_fb.png"
		}
	end

	if gate == "picket" or gate == "picket_white" then
		tiles = {
			"homedecor_blanktile.png",
			"homedecor_blanktile.png",
			"homedecor_blanktile.png",
			"homedecor_blanktile.png",
			"homedecor_gate_"..gate.."_back.png",
			"homedecor_gate_"..gate.."_front.png"
		}
	end

    local def = {
		drawtype = "nodebox",
		description = S(gate_names[i].." Fence Gate"),
		tiles = tiles,
		paramtype = "light",
		groups = {snappy=3},
		sounds = default.node_sound_wood_defaults(),
		paramtype2 = "facedir",
		selection_box = {
			type = "fixed",
			fixed = { -0.5, -0.5, 0.4, 0.5, 0.5, 0.5 }
		},
		node_box = {
			type = "fixed",
			fixed = gate_models_closed[i]
		},
		on_rightclick = function(pos, node, clicker)
			homedecor.flip_gate(pos, node, clicker, gate, "closed")
		end,
        mesecons = {
            effector = {
                action_on = function(pos,node) homedecor.flip_gate(pos,node,player,gate, "closed") end
            }
        }
	}

    -- gates when placed default to closed, closed.

	minetest.register_node("homedecor:gate_"..gate.."_closed", def)

    -- this is either a terrible idea or a great one
    def = table.copy(def)
    def.groups.not_in_creative_inventory = 1
    def.selection_box.fixed = { 0.4, -0.5, -0.5, 0.5, 0.5, 0.5 }
    def.node_box.fixed = gate_models_open[i]
	def.tiles = {
		tiles[1],
		tiles[2],
		tiles[6],
		tiles[5],
		tiles[4],
		tiles[3]
	}
    def.drop = "homedecor:gate_"..gate.."_closed"
	def.on_rightclick = function(pos, node, clicker)
        homedecor.flip_gate(pos, node, clicker, gate, "open")
	end
    def.mesecons.effector = {
        action_off = function(pos,node) homedecor.flip_gate(pos,node,player,gate, "open") end
    }

	minetest.register_node("homedecor:gate_"..gate.."_open", def)
end

minetest.register_alias("homedecor:fence_barbed_wire_gate_open",    "homedecor:gate_barbed_wire_open")
minetest.register_alias("homedecor:fence_barbed_wire_gate_closed",  "homedecor:gate_barbed_wire_closed")
minetest.register_alias("homedecor:fence_chainlink_gate_open",      "homedecor:gate_chainlink_open")
minetest.register_alias("homedecor:fence_chainlink_gate_closed",    "homedecor:gate_chainlink_closed")
minetest.register_alias("homedecor:fence_picket_gate_open",         "homedecor:gate_picket_open")
minetest.register_alias("homedecor:fence_picket_gate_closed",       "homedecor:gate_picket_closed")
minetest.register_alias("homedecor:fence_picket_gate_white_open",   "homedecor:gate_picket_white_open")
minetest.register_alias("homedecor:fence_picket_gate_white_closed", "homedecor:gate_picket_white_closed")

-- to open a door, you switch left for right and subtract from param2, or vice versa right for left
-- that is to say open "right" doors become left door nodes, and open left doors right door nodes.
-- also adjusting param2 so the node is at 90 degrees.

function homedecor.flip_door(pos, node, player, name, side, isClosed)
    if isClosed == nil then
        isClosed = getClosed(pos)
    end
    -- this is where we swap the isClosed status!
    -- i.e. if isClosed, we're adding an open door
    -- and if not isClosed, a closed door
    isClosed = not isClosed

	local rside = nil
	local nfdir = nil
	local ofdir = node.param2 or 0
	if side == "left" then
		rside = "right"
		nfdir=ofdir - 1
		if nfdir < 0 then nfdir = 3 end
	else
		rside = "left"
		nfdir=ofdir + 1
		if nfdir > 3 then nfdir = 0 end
	end
	local sound = isClosed and 'close' or 'open'
	minetest.sound_play("homedecor_door_"..sound, {
		pos=pos,
        max_hear_distance = 5,
		gain = 2,
	})
    -- XXX: does the top half have to remember open/closed too?
	minetest.set_node({x=pos.x, y=pos.y+1, z=pos.z}, { name =  "homedecor:door_"..name.."_top_"..rside, param2=nfdir})

    addDoorNode(pos,{ name = "homedecor:door_"..name.."_bottom_"..rside, param2=nfdir },isClosed)
end

function homedecor.flip_gate(pos, node, player, gate, oc)
    local isClosed = getClosed(pos);
    minetest.sound_play("homedecor_gate_open_close", {
		pos=pos,
		max_hear_distance = 5,
		gain = 2,
	})

	local fdir = node.param2 or 0

    -- since right facing gates use "open" nodes for closed, we need an
    -- isClosed flag to tell if it's "really" closed.

	local gateresult = nil
	if oc == "closed" then
		gateresult = "homedecor:gate_"..gate.."_open"
	else
		gateresult = "homedecor:gate_"..gate.."_closed"
	end

    local def = {name=gateresult, param2=fdir}

    addDoorNode(pos, def, isClosed)

    -- the following opens and closes gates below and above in sync with this one
    -- (without three gate open/close sounds)

    local above = {x=pos.x, y=pos.y+1, z=pos.z}
    local below = {x=pos.x, y=pos.y-1, z=pos.z}
    local nodeabove = minetest.get_node(above)
    local nodebelow = minetest.get_node(below)

	if string.find(nodeabove.name, "homedecor:gate_"..gate) then
        addDoorNode(above, def, isClosed)
	end

	if string.find(nodebelow.name, "homedecor:gate_"..gate) then
        addDoorNode(below, def, isClosed)
	end
end

-- Japanese-style wood/paper wall pieces and door

local jp_cbox = {
	type = "fixed",
	fixed = {-0.5, -0.5, 0, 0.5, 0.5, 0.0625},
}

minetest.register_node("homedecor:japanese_wall_top", {
	description = "Japanese wall (top)",
	drawtype = "mesh",
	mesh = "homedecor_wall_japanese_top.obj",
	tiles = {
		"homedecor_generic_wood_luxury.png",
		"homedecor_japanese_paper.png"
	},
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {snappy=3},
	selection_box = jp_cbox,
	collision_box = jp_cbox,
	sounds = default.node_sound_wood_defaults(),
})

minetest.register_node("homedecor:japanese_wall_middle", {
	description = "Japanese wall",
	drawtype = "mesh",
	mesh = "homedecor_wall_japanese_middle.obj",
	tiles = {
		"homedecor_generic_wood_luxury.png",
		"homedecor_japanese_paper.png"
	},
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {snappy=3},
	selection_box = jp_cbox,
	collision_box = jp_cbox,
	sounds = default.node_sound_wood_defaults(),
})

minetest.register_node("homedecor:japanese_wall_bottom", {
	description = "Japanese wall (bottom)",
	drawtype = "mesh",
	mesh = "homedecor_wall_japanese_bottom.obj",
	tiles = {
		"homedecor_generic_wood_luxury.png",
		"homedecor_japanese_paper.png"
	},
	paramtype = "light",
	paramtype2 = "facedir",
	groups = {snappy=3},
	selection_box = jp_cbox,
	collision_box = jp_cbox,
	sounds = default.node_sound_wood_defaults(),
})

minetest.register_node("homedecor:tatami_mat", {
	tiles = {
		"homedecor_tatami.png",
		"homedecor_tatami.png",
		"homedecor_tatami.png",
		"homedecor_tatami.png",
		"homedecor_tatami.png",
		"homedecor_tatami.png"
	},
	description = "Japanese tatami",
	drawtype = "nodebox",
	paramtype = "light",
	groups = {snappy=3},
	node_box = {
		type = "fixed",
		fixed = {
			{-0.5, -0.5, -0.5, 0.5, -0.4375, 0.5},
		}
	}
})

homedecor.register("door_japanese_closed", {
	description = "Japanese-style door",
	inventory_image = "homedecor_door_japanese_inv.png",
	tiles = {
		"homedecor_generic_wood_luxury.png",
		"homedecor_japanese_paper.png"
	},
	mesh = "homedecor_door_japanese_closed.obj",
	groups = { snappy = 3 },
	sounds = default.node_sound_wood_defaults(),
	selection_box = {
		type = "fixed",
		fixed = {-0.5, -0.5, 0, 0.5, 1.5, 0.0625},
	},
	collision_box = {
		type = "fixed",
		fixed = {-0.5, -0.5, -0.0625, 0.5, 1.5, 0},
	},
	expand = { top = "placeholder" },
	on_rightclick = function(pos, node, clicker)
		minetest.set_node(pos, {name = "homedecor:door_japanese_open", param2 = node.param2})
	end
})

homedecor.register("door_japanese_open", {
	tiles = {
		"homedecor_generic_wood_luxury.png",
		"homedecor_japanese_paper.png"
	},
	mesh = "homedecor_door_japanese_open.obj",
	groups = { snappy = 3, not_in_creative_inventory = 1 },
	sounds = default.node_sound_wood_defaults(),
	on_rotate = screwdriver.disallow,
	selection_box = {
		type = "fixed",
		fixed = {-1.5, -0.5, -0.0625, 0.5, 1.5, 0},
	},
	collision_box = {
		type = "fixed",
		fixed = {-1.5, -0.5, -0.0625, -0.5, 1.5, 0},
	},
	expand = { top = "placeholder" },
	on_rightclick = function(pos, node, clicker)
		minetest.set_node(pos, {name = "homedecor:door_japanese_closed", param2 = node.param2})
	end,
	drop = "homedecor:door_japanese_closed",
})

minetest.register_alias("homedecor:jpn_door_top", "air")
minetest.register_alias("homedecor:jpn_door_bottom", "homedecor:door_japanese_closed")

minetest.register_alias("homedecor:jpn_door_top_open", "air")
minetest.register_alias("homedecor:jpn_door_bottom_open", "homedecor:door_japanese_open")
