const common = require('common')
let idling = 0

module.exports = {
  idling,
  tick (creep) {
    if (creep.store.getFreeCapacity(RESOURCE_ENERGY) > 0) {
      let dropped = creep.pos.findInRange(FIND_DROPPED_RESOURCES, 1);
      if (dropped.length > 0) {
        creep.pickup(dropped[0])
      }

      let target
      let targets = creep.pos.findInRange(FIND_TOMBSTONES, 1, {
        filter: t => t.store[RESOURCE_ENERGY] > 0
      })
      if (targets.length) {
        target = targets[0]
      }
      if (!target) {
        targets = creep.pos.findInRange(FIND_STRUCTURES, 1, {
          filter: s => s.store && s.store[RESOURCE_ENERGY] > 0
        })
        if (targets.length) {
          target = targets[0]
        }
      }
      if (!target) {
        target = creep.room.controller.pos.findClosestByRange(FIND_STRUCTURES, {
          filter: s => s.store && s.store.getCapacity(RESOURCE_ENERGY) > 0
        })
      }
      if (target) {
        if (creep.withdraw(target, RESOURCE_ENERGY) === ERR_NOT_IN_RANGE) {
          creep.moveTo(target)
          return
        }
      }
    }

    if (creep.pos.getRangeTo(creep.room.controller) > 3) {
      creep.moveTo(creep.room.controller, {visualizePathStyle: {stroke: '#ffffff'}})
      return
    }
    let actionResult = creep.upgradeController(creep.room.controller)
    if (actionResult === OK) {
      return
    }

    return 'idle'
  }
};