using Fie.Object;
using Fie.Ponies.Applejack;
using UnityEngine;

namespace Fie.AI {
    public class FieAITaskApplejackBackstep : FieAITaskBase {
        private enum StepState {
            STATE_PREPARE,
            STATE_STEP
        }

        private const float ATTACK_DISTANCE = 15f;

        private bool _isEndState;

        private StepState _stepState;

        public override void Initialize(FieAITaskController manager) {
            _isEndState = false;
            _stepState = StepState.STATE_PREPARE;
        }

        public override bool Task(FieAITaskController manager) {
            if (manager.ownerCharacter.groundState != 0) {
                return true;
            }
            switch (_stepState) {
                case StepState.STATE_PREPARE: {
                        Vector3 directionalVec = new Vector3(
                            Random.Range(-1f, 1f),
                            Random.Range(-1f, 1f),
                            Random.Range(-1f, 1f)
                        );

                        manager.ownerCharacter.RequestToChangeState<FieStateMachineApplejackEvasion>(directionalVec, 1f, FieGameCharacter.StateMachineType.Base);

                        FieStateMachineInterface currentStateMachine = manager.ownerCharacter.getStateMachine().getCurrentStateMachine();

                        if (currentStateMachine is FieStateMachineApplejackEvasion
                            || currentStateMachine is FieStateMachineApplejackBackstep
                            || currentStateMachine is FieStateMachineApplejackCharge) {

                            currentStateMachine.stateChangeEvent += delegate {
                                _isEndState = true;
                            };
                            _stepState = StepState.STATE_STEP;
                        } else {
                            _isEndState = true;
                        }
                        break;
                    }
                case StepState.STATE_STEP:
                    if (_isEndState) {
                        return true;
                    }
                    break;
            }
            return false;
        }
    }
}