minetest.register_craftitem("logikraft:rotator", {
    description = "The rotator",
    inventory_image = "rotator.png",
    on_place = function(itemstack, user, pointed_thing)
        local node = minetest.get_node(pointed_thing.under)
        if not logikraft.cablenodes[node.name]
        then return itemstack
        end

        local new = logikraft.rotateCable(logikraft.cablenodes[node.name],1)
        minetest.swap_node(pointed_thing.under, {name = "logikraft:cable_" .. new})
        return itemstack
    end
})
minetest.register_craftitem("logikraft:linker", {
    description = "The linker",
    inventory_image = "linker.png",
    on_place = function(itemstack, user, pointed_thing)
        local meta = itemstack:get_meta()
        if meta:get_int("logikraft:selected_nb") ~= 0
        then
            local selectednb = meta:get_int("logikraft:selected_nb")
            local selectedx = meta:get_int("logikraft:selected_x")
            local selectedy = meta:get_int("logikraft:selected_y")
            local selectedz = meta:get_int("logikraft:selected_z")
            local selectedpos = {x = selectedx, y = selectedy, z = selectedz}
            local pos = logikraft.cablenodes[minetest.get_node(pointed_thing.under).name] and pointed_thing.under or pointed_thing.above
            local node = minetest.get_node(pos)

            local thisnb = logikraft.cablenodes[minetest.get_node(pointed_thing.under).name] and logikraft.lookingAtNbIndex(user,pointed_thing.under) or -1
            if selectedx == pos.x and selectedy == pos.y and selectedz == pos.z
            then
                if(selectednb ~= thisnb and thisnb ~= -1 and selectednb ~= -1)
                then
                    local new = logikraft.connectInCable(logikraft.cablenodes[node.name],selectednb,thisnb)
                    minetest.swap_node(pos, {name = "logikraft:cable_" .. new})
                end
                meta:set_int("logikraft:selected_nb",0)
                meta:set_string("inventory_image","linker.png")
                return itemstack
            else
                local new = logikraft.connectContiguousCable(
                    logikraft.cablenodes[minetest.get_node(selectedpos).name],selectedpos,(selectednb ~= -1 and selectednb) or nil,
                    logikraft.cablenodes[node.name],pos,(thisnb ~= -1 and thisnb) or nil)
                if new
                then
                    minetest.swap_node(selectedpos, {name = "logikraft:cable_" .. new[1]})
                    minetest.swap_node(pos, {name = "logikraft:cable_" .. new[2]})
                    meta:set_int("logikraft:selected_nb",0)
                    meta:set_string("inventory_image","linker.png")
                else
                    minetest.chat_send_player(user:get_player_name(),"Les cables sont trop loins l'un de l'autre :/")
                end
                return itemstack
            end
        else

            local pos = logikraft.cablenodes[minetest.get_node(pointed_thing.under).name] and pointed_thing.under or pointed_thing.above
            local node = minetest.get_node(pos)

            if logikraft.cablenodes[node.name]
            then
                -- If we are looking at a cable we activate and store data
                local thisnb = logikraft.cablenodes[minetest.get_node(pointed_thing.under).name] and logikraft.lookingAtNbIndex(user,pointed_thing.under) or -1
                    
                meta:set_int("logikraft:selected_nb",thisnb)
                meta:set_int("logikraft:selected_x",pos.x)
                meta:set_int("logikraft:selected_y",pos.y)
                meta:set_int("logikraft:selected_z",pos.z)
                meta:set_string("inventory_image","linker_activated.png")
            else
                -- Else we place a cable
                local node_def = minetest.registered_nodes[node.name]
                if not (node_def and node_def.buildable_to)
                then return itemstack end
                local new = nil
                local poz = {
                    {x = pos.x+1, y = pos.y, z = pos.z},
                    {x = pos.x, y = pos.y, z = pos.z+1},
                    {x = pos.x-1, y = pos.y, z = pos.z},
                    {x = pos.x, y = pos.y, z = pos.z-1}
                }
                for k,pos2 in pairs(poz)
                do
                    local cable2 = minetest.get_node(pos2)
                    if logikraft.cablenodes[cable2.name]
                    then 
                        local contiguous = logikraft.connectContiguousCable(new, pos, 1, logikraft.cablenodes[cable2.name], pos2, nil)
                        new = contiguous[1]
                        minetest.swap_node(pos2, {name = "logikraft:cable_" .. contiguous[2]})
                    end
                end
                minetest.add_node(pos, {name = "logikraft:cable_" .. (new or "NSEW1")})
            end
        end
        
        return itemstack
    end,
    on_secondary_use = function(itemstack, user, pointed_thing)
        -- Looking at nothing -> we dispose of the data
        local meta = itemstack:get_meta()
        meta:set_int("logikraft:selected_nb",0)
        meta:set_string("inventory_image","linker.png")
        return itemstack
    end
})
minetest.register_craftitem("logikraft:unlinker", {
    description = "The unlinker",
    inventory_image = "unlinker.png",
    on_place = function(itemstack, user, pointed_thing)
        local node = minetest.get_node(pointed_thing.under)
        if not logikraft.cablenodes[node.name]
        then return itemstack
        end

        local index = logikraft.lookingAtNbIndex(user,pointed_thing.under)
        print(logikraft.cablenodes[node.name])
        print(dump(logikraft.cables[logikraft.cablenodes[node.name]]))
        local new = logikraft.disconnectInCable(logikraft.cablenodes[node.name],index)
        if new
        then minetest.swap_node(pointed_thing.under, {name = "logikraft:cable_" .. new})
        else minetest.remove_node(pointed_thing.under)
        end
        
        return itemstack
    end
})
minetest.register_craftitem("logikraft:resizer", {
    description = "The Resizer",
    inventory_image = "resizer.png",
    on_place = function(itemstack, user, pointed_thing)
        local node = minetest.get_node(pointed_thing.under)
        if not logikraft.cablenodes[node.name]
        then return itemstack
        end

        local index = logikraft.lookingAtNbIndex(user,pointed_thing.under)

        local new = logikraft.resizeInCable(logikraft.cablenodes[node.name],index)
        minetest.swap_node(pointed_thing.under, {name = "logikraft:cable_" .. new})
        
        return itemstack
    end
})

minetest.register_craftitem("logikraft:editor", {
    description = "The Editor",
    inventory_image = "editor.png",
    on_place = function(itemstack, user, pointed_thing)
        local node = minetest.get_node(pointed_thing.under)
        if logikraft.cablenodes[node.name]
        then 
            local index = logikraft.lookingAtNbIndex(user,pointed_thing.under)
            minetest.chat_send_all("Looking at nodeblock "..tostring(index))
        elseif node.name == "logikraft:component_input_1_1"
        then 
            logikraft.showNameFormspec(user:get_player_name(), pointed_thing.under)
        elseif node.name == "logikraft:component_output_1_1"
        then 
            logikraft.showNameFormspec(user:get_player_name(), pointed_thing.under)
        elseif logikraft.componentnodes[node.name]
        then 
            minetest.chat_send_all("Looking at component "..logikraft.componentnodes[node.name].name)
        elseif node.name == "logikraft:circuitBlock"
        then 
            logikraft.showCircuitFormspec(user:get_player_name(), pointed_thing.under)
        end

        return itemstack
    end
})