using System;
using System.Collections.Generic;
using ShiroginSDK.Runtime.Core.SDK;
using ShiroginSDK.Runtime.Services.Base;
using ShiroginSDK.Runtime.Services.Interfaces;
using UnityEngine;

#if SHIROGIN_FACEBOOK
using Facebook.Unity;
#endif

namespace ShiroginSDK.Runtime.Services.Implementations.Facebook
{
#if SHIROGIN_FACEBOOK
    /// <summary>
    ///     Handles Facebook SDK initialization, login, and event tracking.
    ///     Now managed as a ServiceBase implementation for modular SDK integration.
    /// </summary>
    public class FacebookService : ServiceBase, IFacebookService
    {
        ShiroginConfig _config;
        private bool _isInitialized;

        // ----------------------------------------------------
        // Initialization
        // ----------------------------------------------------
        public void Initialize()
        {
            _config = ShiroginConfig.Load();
            if (!_config.enableFacebook)
            {
                Debug.LogWarning("[FacebookService] 🛑 Facebook DISABLED in Config. Running in Dummy Mode.");
                return;
            }
            if (_isInitialized)
                return;

            if (!FB.IsInitialized)
            {
                FB.Init(OnInitComplete, OnHideUnity);
            }
            else
            {
                FB.ActivateApp();
                _isInitialized = true;
            }
        }

        // ----------------------------------------------------
        // Login
        // ----------------------------------------------------
        public void Login(Action<bool, string> callback = null)
        {
            if (_config == null || !_config.enableFacebook)
            {
                Debug.Log("[FacebookService] (Dummy) Login called but disabled.");
                callback?.Invoke(false, null);
                return;
            }
            if (!_isInitialized)
            {
                Debug.LogWarning("[FacebookService] ⚠️ Login attempted before initialization.");
                callback?.Invoke(false, null);
                return;
            }

            var permissions = new List<string> { "public_profile", "email" };
            FB.LogInWithReadPermissions(permissions, result =>
            {
                if (FB.IsLoggedIn)
                {
                    var userId = AccessToken.CurrentAccessToken.UserId;
                    Debug.Log($"[FacebookService] ✅ Login successful: {userId}");
                    callback?.Invoke(true, userId);
                }
                else
                {
                    Debug.LogWarning("[FacebookService] ❌ Login failed.");
                    callback?.Invoke(false, null);
                }
            });
        }

        // ----------------------------------------------------
        // Analytics
        // ----------------------------------------------------
        public void LogPurchase(float amount, string currency)
        {
            if (!_isInitialized)
            {
                Debug.LogWarning("[FacebookService] ⚠️ LogPurchase called before SDK init.");
                return;
            }

            FB.LogPurchase(amount, currency);
            Debug.Log($"[FacebookService] 💰 Purchase logged: {amount} {currency}");
        }

        public void LogEvent(string eventName, float? value = null, Dictionary<string, object> parameters = null)
        {
            if (_config == null || !_config.enableFacebook) return;
            if (!_isInitialized)
            {
                Debug.LogWarning("[FacebookService] ⚠️ LogEvent called before SDK init.");
                return;
            }

            if (value.HasValue)
                FB.LogAppEvent(eventName, value.Value, parameters);
            else
                FB.LogAppEvent(eventName, null, parameters);

            Debug.Log($"[FacebookService] 📊 Event logged: {eventName}");
        }

        // ----------------------------------------------------
        // Lifecycle
        // ----------------------------------------------------
        protected override void OnInitialize()
        {
            Initialize();
        }

        protected override void OnDispose()
        {
            // Nothing to dispose for now
        }

        private void OnInitComplete()
        {
            _isInitialized = true;
            FB.ActivateApp();
            Debug.Log("[FacebookService] ✅ SDK Initialized.");
        }

        private void OnHideUnity(bool isGameShown)
        {
            Time.timeScale = isGameShown ? 1 : 0;
        }
    }
#else
    /// <summary>
    ///     Handles Facebook SDK initialization, login, and event tracking.
    ///     Now managed as a ServiceBase implementation for modular SDK integration.
    /// </summary>
    public class FacebookService : ServiceBase, IFacebookService
    {
        ShiroginConfig _config;
        private bool _isInitialized;

        // ----------------------------------------------------
        // Initialization
        // ----------------------------------------------------
        public void Initialize()
        {
            _config = ShiroginConfig.Load();
            if (!_config.enableFacebook)
            {
                Debug.LogWarning("[FacebookService] 🛑 Facebook DISABLED in Config. Running in Dummy Mode.");
            }
        }

        // ----------------------------------------------------
        // Login
        // ----------------------------------------------------
        public void Login(Action<bool, string> callback = null)
        {
            if (_config == null || !_config.enableFacebook)
            {
                Debug.Log("[FacebookService] (Dummy) Login called but disabled.");
                callback?.Invoke(false, null);
                return;
            }
        }

        // ----------------------------------------------------
        // Analytics
        // ----------------------------------------------------
        public void LogPurchase(float amount, string currency)
        {
            Debug.Log($"[FacebookService] Dummy💰 Purchase logged: {amount} {currency}");
        }

        public void LogEvent(string eventName, float? value = null, Dictionary<string, object> parameters = null)
        {
            Debug.Log($"[FacebookService] Dummy Event logged: {eventName}");
        }

        // ----------------------------------------------------
        // Lifecycle
        // ----------------------------------------------------
        protected override void OnInitialize()
        {
            Initialize();
        }

        protected override void OnDispose()
        {
            // Nothing to dispose for now
        }

        private void OnInitComplete()
        {
            _isInitialized = true;
            Debug.Log("[FacebookService] Dummy✅ SDK Initialized.");
        }

        private void OnHideUnity(bool isGameShown)
        {
            Time.timeScale = isGameShown ? 1 : 0;
        }
    }
#endif
}