using UnityEditor;
using System.Collections;
using UnityEngine;
using System.Collections.Generic;
using System;
using UnityEngine.Events;

/*
 * In basic want to have 3 steps
 * - first to say hello and accept/reject mission
 * - secont - to check condition with plain dialogue
 * - third - to get reward
 */
[Serializable]
public class MissionStepModel
{
    protected Mission MissionOrigin { get; private set; }

    // Must be filled manually ! ! !
    [SerializeField]
    public string SpeakerName;

    [SerializeField]        // this flag tell whatewer dialoge ware already display to user
    public MissionStepStatusEnum Status = MissionStepStatusEnum.None;
/*
    [SerializeField]
    public MissionDialogue DialogueStepTemplate;*/

    [SerializeField]
    public MissionDialogue DialogueStep;

    // Conditions must be assigned to specify dialogue step
    [SerializeField]
    public IndexValuePair<int, List<MissionCondition>> MissionConditions;

    public MissionStepModel() { }

    public void SetSpeakerName(string speakerName) { SpeakerName = speakerName; }

    public Mission GetOriginMission()
    {
        return MissionOrigin;
    }

    public virtual void Build(Mission parent)
    {
        if(Status == MissionStepStatusEnum.None)
            Status = MissionStepStatusEnum.Pending;

        MissionOrigin = parent;

        //DialogueStep = MonoBehaviour.Instantiate(DialogueStepTemplate); // create copy to prevent overwritting oryginal object! !
        DialogueStep.BindParent(this);
        DialogueStep.SetSpeakerName(SpeakerName);
        DialogueStep.BuildDialogue();
        //DialogueStep.SetActionAfterDialogueStep(MissionConditions.Key, HanldeMissionStepCondition);
    }

    /// <summary>
    /// Important: Mission Step must be previously builded by Build function!!!
    /// </summary>
    public void ActivateStep()
    {
        // Dialogue MUST be builded ALWAYS - Build dialogue without displayed panel
        //DialogueStep.BuildDialogue(DialogueStep.DialogueSteps);

        if (Status != MissionStepStatusEnum.Pending)
            return;

        Status = MissionStepStatusEnum.Active;

        RegisterCondition();


    }

    #region Condition Mangment section
    public void RegisterCondition()
    {
        Debug.Log(MissionConditions);
        Debug.Log(MissionConditions.Value[0].Type);

        
        ConditionManager.Instance.RegisterCondition(MissionOrigin.MissionName, BuildConditionsList());
        Debug.Log("Condition registered");
    }

    /// <summary>
    /// Function to change Base Conditions objects put in list defaultly to specific
    /// 
    /// Note: This allow to cover base methods by this overwrittens in specific sub-class (like: CheckCondition method)
    /// </summary>
    /// <returns></returns>
    public List<MissionCondition> BuildConditionsList()
    {
        var buildedList = new List<MissionCondition>();

        foreach (var baseCondition in MissionConditions.Value)
        {
            buildedList.Add(baseCondition.Build());
        }

        return buildedList;
    }


    // If mission's stem condition is fulified then mrak mission step as finished
    // else do nothing - player MUST this loop step
    // Its not required to condition be in last dialogue step

    // Checking condition and handling after action is assigned by button in dialogue step
    // If no then there is no possibility to go foward in proggress
    public bool HanldeMissionStepCondition()
    {
        if(CheckCondition())
        {
            Status = MissionStepStatusEnum.AfterCondition;

            // 2. Remove Misison Steps Conditon from global list
            ConditionManager.Instance.RemoveCondition(MissionOrigin.MissionName);

            // 3. Remove founded elements

            return true;
        }
        else
        {
            
            Debug.Log("Dialogue - FinalAction - CheckCondition - HanldeMissionStepCondition - Condition not meeted");
        }

        return false;
    }

    public bool CheckCondition()
    {
        return ConditionManager.Instance.CheckCondition(MissionOrigin.MissionName);
    }
    #endregion
}


// TODO
// zapobieganie zniuknieciu itemow po otrzymaniu nagrody z poanelu gracza - WYKONANIE SAVE PO ZAKOŃCZENIU STEPU:
//  -- zapisanie postępu misji w pliku z misjami
//  -- zapisanie statusu panelu gracza (lista misji / content ekwipunku / magazynu)