/*  ###########################################
    # Mine energy and do all fundamental jobs #
    ###########################################*/

module.exports = {
    do: function(creep){
        //memory setup
        if(creep.memory.harvesting == undefined) creep.memory.harvesting = true;
        if(creep.memory.counter == undefined) creep.memory.counter = 0;
        if(creep.memory.target == undefined) creep.memory.target = null;

        if (creep.memory.harvesting){
            var source = Game.getObjectById(creep.memory.source_id);
            var result = creep.harvest(source);
            if (result == ERR_NOT_IN_RANGE){
                creep.moveTo(source);    
            }
            if (result == ERR_NOT_ENOUGH_RESOURCES || creep.store.getFreeCapacity(RESOURCE_ENERGY) == 0){
                creep.memory.harvesting = false;
                creep.memory.target = null;
            }
        } else {
            if(creep.memory.target == null){
                switch(creep.memory.counter%10){
                    case 0: // upgrading
                        creep.memory.target = creep.room.controller.id;
                        break;
                    case 1: // suppling
                    case 2:
                    case 3:
                    case 4:
                        creep.memory.target = creep.pos.findClosestByRange(FIND_MY_STRUCTURES,{
                            filter:(s) => ( s.structureType == STRUCTURE_SPAWN || s.structureType == STRUCTURE_EXTENSION ) && s.store.getFreeCapacity(RESOURCE_ENERGY) > 0});
                        if(creep.memory.target != null) creep.memory.target = creep.memory.target.id;
                        else creep.memory.counter += 1;
                        break;
                    case 5:
                    case 6:
                    case 7:
                    case 8:
                        creep.memory.target = creep.pos.findClosestByRange(FIND_CONSTRUCTION_SITES);
                        if(creep.memory.target != null) creep.memory.target = creep.memory.target.id;
                        else creep.memory.counter += 1;
                        break;
                    case 9: // repairing (no walls or ramparts)
                        creep.memory.target = creep.pos.findClosestByRange(FIND_STRUCTURES,{
                            filter:(s) => ( s.structureType != STRUCTURE_WALL && s.structureType != STRUCTURE_RAMPART) && s.hits < s.hitsMax});
                        if(creep.memory.target != null) creep.memory.target = creep.memory.target.id;
                        else creep.memory.counter += 1;
                        break;
                }
            }
            
            var target = Game.getObjectById(creep.memory.target);
            var response = OK;
            switch(creep.memory.counter%10){
                case 0:
                    response = creep.transfer(target, RESOURCE_ENERGY);
                    break;
                case 1:
                case 2:
                case 3:
                case 4:
                    response = creep.transfer(target, RESOURCE_ENERGY);
                    if(target != null && target.store.getFreeCapacity(RESOURCE_ENERGY) == 0) creep.memory.target = null;
                    break;
                case 5:
                case 6:
                case 7:
                case 8:
                    response = creep.build(target);
                    if(target != null && target.progress == target.progressTotal) creep.memory.target = null;
                    break;
                case 9:
                    response = creep.repair(target);
                    if(target != null && target.hits == target.hitsMax) creep.memory.target = null;
                    break;
            }
            if(response == ERR_NOT_IN_RANGE){
                creep.moveTo(target);
            } else if(response == ERR_FULL || response == ERR_INVALID_TARGET){
                creep.memory.target = null;
            }
            if (creep.store.getUsedCapacity(RESOURCE_ENERGY) == 0){
                creep.memory.harvesting = true;
                creep.memory.target = null;
                creep.memory.counter += 1;
            }
        }
    }
};