const consts = {
  FINISHED: 1,
  HARVESTING: 2,
  CONTINUE_ACTIVITY: 3,
}

module.exports = {
  consts,
  harvestEnergy (creep) {
    if (!creep.memory.harvestingEnergy && creep.store[RESOURCE_ENERGY] > 0) {
      return consts.CONTINUE_ACTIVITY
    }
    creep.memory.harvestingEnergy = creep.store.getFreeCapacity() > 0
    if (!creep.memory.harvestingEnergy) {
      return consts.FINISHED
    }
    // if (creep.store[RESOURCE_ENERGY] === 0) {
    //  creep.say('🔄 fetch');
    // }
    let target
    if (!target) {
      target = creep.pos.findClosestByRange(FIND_STRUCTURES, {
        filter: s => (s.structureType === STRUCTURE_CONTAINER || s.structureType === STRUCTURE_STORAGE)
            && s.store[RESOURCE_ENERGY] >= creep.store.getFreeCapacity(RESOURCE_ENERGY)
      });
    }
    if(target) {
      let result = creep.withdraw(target, RESOURCE_ENERGY)
      if (result === ERR_NOT_IN_RANGE) {
        creep.moveTo(target, {visualizePathStyle: {stroke: '#ffaa00'}});
      }
      else if (result === OK) {
        return consts.FINISHED
      }
    }
    else {
      let target = creep.pos.findClosestByRange(FIND_MY_CREEPS, {
        filter: creep => creep.memory.role === 'harvester' && creep.store[RESOURCE_ENERGY] > 0
      });
      if (target) {
        creep.moveTo(target, {visualizePathStyle: {stroke: '#ffaa00'}});
      }
    }
    return consts.HARVESTING
  }
}