/*  #######################################################
    # Deliver energy to spawns, controller and extencions #
    ####################################################### */

module.exports = {
    do: function(creep){
        // Memory creation
        if(creep.memory.restock == undefined) creep.memory.restock = true;
        if(creep.memory.target == undefined) creep.memory.target = null;
        // Job implementation
        if(creep.memory.restock){
            if(creep.memory.target == null){ // aquire target
                var containers = creep.room.find(FIND_STRUCTURES, 
                    {filter: (s)=>(s.structureType == STRUCTURE_CONTAINER
                        && s.store.getUsedCapacity(RESOURCE_ENERGY) >= creep.store.getFreeCapacity(RESOURCE_ENERGY)/2)});
                var container = containers[0];
                for(var c in containers){
                    c = containers[c];
                    if(c.store.getUsedCapacity(RESOURCE_ENERGY) > container.store.getUsedCapacity(RESOURCE_ENERGY)) container = c;
                }
                if(container != null) creep.memory.target = container.id;
                else creep.memory.target = creep.room.storage.id;
            }
            var target = Game.getObjectById(creep.memory.target);
            if(creep.withdraw(target, RESOURCE_ENERGY) == ERR_NOT_IN_RANGE) creep.moveTo(target);
            if(target != null && target.store.getUsedCapacity(RESOURCE_ENERGY) < creep.store.getFreeCapacity(RESOURCE_ENERGY)*0.4) creep.memory.target = null;
            if(creep.store.getFreeCapacity(RESOURCE_ENERGY) == 0){
                creep.memory.restock = false;
                creep.memory.target = null;
            }
        } else {
            if(creep.memory.target == null){ // aquire target
                var structure = creep.pos.findClosestByPath(FIND_MY_STRUCTURES, 
                    {filter: (s)=>(s.structureType == STRUCTURE_TOWER && s.store.getUsedCapacity(RESOURCE_ENERGY) < 900)});
                if(structure == null) structure = creep.pos.findClosestByPath(FIND_MY_STRUCTURES, 
                    {filter: (s)=>(( s.structureType == STRUCTURE_SPAWN || s.structureType == STRUCTURE_EXTENSION) 
                        && s.store.getFreeCapacity(RESOURCE_ENERGY) > s.store.getCapacity(RESOURCE_ENERGY)*0.1)});
                if(structure == null) structure = creep.pos.findClosestByPath(FIND_MY_STRUCTURES, 
                    {filter: (s)=>(( s.id == "5f3e44e1014017c66fc5df10") && s.store.getFreeCapacity() > 100)});
                if(structure == null) structure = creep.room.storage;
                if(structure == null) return;
                creep.memory.target = structure.id;
            }
            var target = Game.getObjectById(creep.memory.target);
            if(creep.transfer(target, RESOURCE_ENERGY) == ERR_NOT_IN_RANGE) creep.moveTo(target);
            if(target != null && target.store.getFreeCapacity(RESOURCE_ENERGY) == 0) creep.memory.target = null;
            if(creep.store.getUsedCapacity(RESOURCE_ENERGY) == 0){
                creep.memory.restock = true;
                creep.memory.target = null;
            }
        }
    }
};