using UnityEngine;
using Prime31;
using System.Collections.Generic;

namespace HutongGames.PlayMaker.Actions
{
    [ActionCategory("Social/Facebook")]
    [Tooltip("Logs a user into Facebook with write permissions. You can see there facebook info and post on their wall")]
    public class RequestWrite : FsmStateAction
    {
        [RequiredField]
        [Tooltip("What event to call on success")]
        public FsmEvent successEvent;

        [Tooltip("What event to call on error")]
        public FsmEvent errorEvent;

        [Tooltip("Already Logged In")]
        public FsmEvent alreadyLoggedEvent;


        public override void OnExit() {
#if UNITY_IOS
            FacebookManager.reauthorizationFailedEvent -= reauthorizationFailedEvent;
            FacebookManager.reauthorizationSucceededEvent -= reauthorizationSucceededEvent;
#endif
        }

        public override void OnEnter()
        {

#if UNITY_IOS
            FacebookManager.reauthorizationFailedEvent += reauthorizationFailedEvent;
            FacebookManager.reauthorizationSucceededEvent += reauthorizationSucceededEvent;
            Debug.Log ("Logging into Facebook with write permissions");

            var hasWritePermissions = FsmVariables.GlobalVariables.GetFsmBool("hasWritePermissions").Value;

            var hasReadPermissions = FsmVariables.GlobalVariables.GetFsmBool("hasReadPermissions").Value;
            if(!hasReadPermissions) {
                Debug.LogWarning("You must have read permissions to call this function");
                Finish();
                return;
            }

            if(hasWritePermissions == false)
            {
                Debug.Log ("Requesting write permissions");
                var permissions = new string[] { "publish_actions", "publish_stream" };
                FacebookBinding.reauthorizeWithPublishPermissions( permissions, FacebookSessionDefaultAudience.Everyone);
            }
            else {
                Debug.Log ("Already hass write permissions");
                Fsm.Event(alreadyLoggedEvent);
            }
#endif

#if UNITY_EDITOR
            Finish();
#endif
        }


#if UNITY_IOS
        void reauthorizationSucceededEvent()
        {
            Debug.Log ("reauthorizationSucceededEvent");
            var globalVariables = FsmVariables.GlobalVariables;
            var hasWrite = globalVariables.GetFsmBool("hasWritePermissions");
            hasWrite.Value = true;

            Fsm.Event(successEvent);
            Finish();
        }


        void reauthorizationFailedEvent( P31Error error )
        {
            Debug.Log ("loginFailedEvent write");
            var globalVariables = FsmVariables.GlobalVariables;
            var hasWrite = globalVariables.GetFsmBool("hasWritePermissions");
            hasWrite.Value = false;
            var fsmError = globalVariables.GetFsmString("SocialError");
            fsmError.Value = error.ToString();

            Fsm.Event(errorEvent);
            Finish();
        }
#endif

    }
}