using UnityEngine;
using System.Linq;
using System.Collections;
using System.Collections.Generic;

namespace UnityEngine.ProBuilder
{
    /// <summary>
    /// Store settings in a project local manner.
    /// </summary>
    sealed class PreferenceDictionary :
        ScriptableObject,
        ISerializationCallbackReceiver,
        IHasDefault
    {
        Dictionary<string, bool>        m_Bool      = new Dictionary<string, bool>();
        Dictionary<string, int>         m_Int       = new Dictionary<string, int>();
        Dictionary<string, float>       m_Float     = new Dictionary<string, float>();
        Dictionary<string, string>      m_String    = new Dictionary<string, string>();
        Dictionary<string, Color>       m_Color     = new Dictionary<string, Color>();
        Dictionary<string, Material>    m_Material  = new Dictionary<string, Material>();

        [SerializeField] List<string>   m_Bool_keys;
        [SerializeField] List<string>   m_Int_keys;
        [SerializeField] List<string>   m_Float_keys;
        [SerializeField] List<string>   m_String_keys;
        [SerializeField] List<string>   m_Color_keys;
        [SerializeField] List<string>   m_Material_keys;

        [SerializeField] List<bool>     m_Bool_values;
        [SerializeField] List<int>      m_Int_values;
        [SerializeField] List<float>    m_Float_values;
        [SerializeField] List<string>   m_String_values;
        [SerializeField] List<Color>    m_Color_values;
        [SerializeField] List<Material> m_Material_values;

        /// <summary>
        /// Perform the ritual "Please Serialize My Dictionary" dance.
        /// </summary>
        public void OnBeforeSerialize()
        {
            m_Bool_keys         = m_Bool.Keys.ToList();
            m_Int_keys          = m_Int.Keys.ToList();
            m_Float_keys        = m_Float.Keys.ToList();
            m_String_keys       = m_String.Keys.ToList();
            m_Color_keys        = m_Color.Keys.ToList();
            m_Material_keys     = m_Material.Keys.ToList();

            m_Bool_values       = m_Bool.Values.ToList();
            m_Int_values        = m_Int.Values.ToList();
            m_Float_values      = m_Float.Values.ToList();
            m_String_values     = m_String.Values.ToList();
            m_Color_values      = m_Color.Values.ToList();
            m_Material_values   = m_Material.Values.ToList();
        }

        /// <summary>
        /// Reconstruct preference dictionaries from serialized lists.
        /// </summary>
        public void OnAfterDeserialize()
        {
            for (int i = 0; i < m_Bool_keys.Count; i++)
                m_Bool.Add(m_Bool_keys[i], m_Bool_values[i]);

            for (int i = 0; i < m_Int_keys.Count; i++)
                m_Int.Add(m_Int_keys[i], m_Int_values[i]);

            for (int i = 0; i < m_Float_keys.Count; i++)
                m_Float.Add(m_Float_keys[i], m_Float_values[i]);

            for (int i = 0; i < m_String_keys.Count; i++)
                m_String.Add(m_String_keys[i], m_String_values[i]);

            for (int i = 0; i < m_Color_keys.Count; i++)
                m_Color.Add(m_Color_keys[i], m_Color_values[i]);

            for (int i = 0; i < m_Material_keys.Count; i++)
                m_Material.Add(m_Material_keys[i], m_Material_values[i]);
        }

        /// <summary>
        /// Clear dictionary values.
        /// </summary>
        public void SetDefaultValues()
        {
            m_Bool.Clear();
            m_Int.Clear();
            m_Float.Clear();
            m_String.Clear();
            m_Color.Clear();
            m_Material.Clear();
        }

        /// <summary>
        /// Check if a key is contained within any type dictionary.
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public bool HasKey(string key)
        {
            return m_Bool.ContainsKey(key) ||
                m_Int.ContainsKey(key) ||
                m_Float.ContainsKey(key) ||
                m_String.ContainsKey(key) ||
                m_Color.ContainsKey(key) ||
                m_Material.ContainsKey(key);
        }

        /// <summary>
        /// Test if specific type dictionary contains a key.
        /// </summary>
        /// <param name="key"></param>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public bool HasKey<T>(string key)
        {
            System.Type type = typeof(T);

            if (type == typeof(int))
                return m_Int.ContainsKey(key);
            else if (type == typeof(float))
                return m_Float.ContainsKey(key);
            else if (type == typeof(bool))
                return m_Bool.ContainsKey(key);
            else if (type == typeof(string))
                return m_String.ContainsKey(key);
            else if (type == typeof(Color))
                return m_Color.ContainsKey(key);
            else if (type == typeof(Material))
                return m_Material.ContainsKey(key);
            else
            {
                Debug.LogWarning(string.Format("HasKey<{0}>({1}) not valid preference type.",
                        typeof(T).ToString(),
                        key));
            }

            return false;
        }

        public void DeleteKey(string key)
        {
            if (m_Bool.ContainsKey(key))
                m_Bool.Remove(key);
            if (m_Int.ContainsKey(key))
                m_Int.Remove(key);
            if (m_Float.ContainsKey(key))
                m_Float.Remove(key);
            if (m_String.ContainsKey(key))
                m_String.Remove(key);
            if (m_Color.ContainsKey(key))
                m_Color.Remove(key);
            if (m_Material.ContainsKey(key))
                m_Material.Remove(key);
        }

        /// <summary>
        /// "Generic" Get preference for key function.
        /// </summary>
        /// <param name="key"></param>
        /// <param name="fallback"></param>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public T Get<T>(string key, T fallback = default(T))
        {
            System.Type type = typeof(T);

            if (type == typeof(int))
            {
                if (m_Int.ContainsKey(key))
                    return (T)(object)GetInt(key);
            }
            else if (type == typeof(float))
            {
                if (m_Float.ContainsKey(key))
                    return (T)(object)GetFloat(key);
            }
            else if (type == typeof(bool))
            {
                if (m_Bool.ContainsKey(key))
                    return (T)(object)GetBool(key);
            }
            else if (type == typeof(string))
            {
                if (m_String.ContainsKey(key))
                    return (T)(object)GetString(key);
            }
            else if (type == typeof(Color))
            {
                if (m_Color.ContainsKey(key))
                    return (T)(object)GetColor(key);
            }
            else if (type == typeof(Material))
            {
                if (m_Material.ContainsKey(key))
                    return (T)(object)GetMaterial(key);
            }
            else
            {
                Debug.LogWarning(string.Format("Get<{0}>({1}) not valid preference type.",
                        typeof(T).ToString(),
                        key));
            }

            return fallback;
        }

        /// <summary>
        /// "Generic" set value.  Only accepts:
        ///  - int,
        ///  - float,
        ///  - bool,
        ///  - string,
        ///  - Color,
        ///  - Material
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <typeparam name="T"></typeparam>
        public void Set<T>(string key, T value)
        {
            object o = (object)value;

            if (value is int)
                SetInt(key, (int)o);
            else if (value is float)
                SetFloat(key, (float)o);
            else if (value is bool)
                SetBool(key, (bool)o);
            else if (value is string)
                SetString(key, (string)o);
            else if (value is Color)
                SetColor(key, (Color)o);
            else if (value is Material)
                SetMaterial(key, (Material)o);
            else
                Debug.LogWarning(string.Format("Set<{0}>({1}, {2}) not valid preference type.",
                        typeof(T).ToString(),
                        key,
                        value.ToString()));
        }

        /// <summary>
        /// Fetch a value from the stored preferences.  If key is not found, a default value is returned.
        /// </summary>
        public bool GetBool(string key, bool fallback = default(bool))
        {
            bool value;
            if (m_Bool.TryGetValue(key, out value))
                return value;
            return fallback;
        }

        /// <summary>
        /// Fetch a value from the stored preferences.  If key is not found, a default value is returned.
        /// </summary>
        public int GetInt(string key, int fallback = default(int))
        {
            int value;
            if (m_Int.TryGetValue(key, out value))
                return value;
            return fallback;
        }

        /// <summary>
        /// Fetch a value from the stored preferences.  If key is not found, a default value is returned.
        /// </summary>
        public float GetFloat(string key, float fallback = default(float))
        {
            float value;
            if (m_Float.TryGetValue(key, out value))
                return value;
            return fallback;
        }

        /// <summary>
        /// Fetch a value from the stored preferences.  If key is not found, a default value is returned.
        /// </summary>
        public string GetString(string key, string fallback = default(string))
        {
            string value;
            if (m_String.TryGetValue(key, out value))
                return value;
            return fallback;
        }

        /// <summary>
        /// Fetch a value from the stored preferences.  If key is not found, a default value is returned.
        /// </summary>
        public Color GetColor(string key, Color fallback = default(Color))
        {
            Color value;
            if (m_Color.TryGetValue(key, out value))
                return value;
            return fallback;
        }

        /// <summary>
        /// Fetch a value from the stored preferences.  If key is not found, a default value is returned.
        /// </summary>
        public Material GetMaterial(string key, Material fallback = default(Material))
        {
            Material value;
            if (m_Material.TryGetValue(key, out value))
                return value;
            return fallback;
        }

        /// <summary>
        /// Set a value for key in the saved prefs.
        /// </summary>
        public void SetBool(string key, bool value)
        {
            m_Bool[key] = value;
        }

        /// <summary>
        /// Set a value for key in the saved prefs.
        /// </summary>
        public void SetInt(string key, int value)
        {
            m_Int[key] = value;
        }

        /// <summary>
        /// Set a value for key in the saved prefs.
        /// </summary>
        public void SetFloat(string key, float value)
        {
            m_Float[key] = value;
        }

        /// <summary>
        /// Set a value for key in the saved prefs.
        /// </summary>
        public void SetString(string key, string value)
        {
            m_String[key] = value;
        }

        /// <summary>
        /// Set a value for key in the saved prefs.
        /// </summary>
        public void SetColor(string key, Color value)
        {
            m_Color[key] = value;
        }

        /// <summary>
        /// Set a value for key in the saved prefs.
        /// </summary>
        public void SetMaterial(string key, Material value)
        {
            m_Material[key] = value;
        }

        /// <summary>
        /// Get the internal <key, bool> dictionary.
        /// </summary>
        public Dictionary<string, bool> GetBoolDictionary() { return m_Bool; }

        /// <summary>
        /// Get the internal <key, int> dictionary.
        /// </summary>
        public Dictionary<string, int> GetIntDictionary() { return m_Int; }

        /// <summary>
        /// Get the internal <key, float> dictionary.
        /// </summary>
        public Dictionary<string, float> GetFloatDictionary() { return m_Float; }

        /// <summary>
        /// Get the internal <key, string> dictionary.
        /// </summary>
        public Dictionary<string, string> GetStringDictionary() { return m_String; }

        /// <summary>
        /// Get the internal <key, Color> dictionary.
        /// </summary>
        public Dictionary<string, Color> GetColorDictionary() { return m_Color; }

        /// <summary>
        /// Get the internal <key, Material> dictionary.
        /// </summary>
        public Dictionary<string, Material> GetMaterialDictionary() { return m_Material; }

        /// <summary>
        /// Clear all stored preference key value pairs.
        /// </summary>
        public void Clear()
        {
            m_Bool.Clear();
            m_Int.Clear();
            m_Float.Clear();
            m_String.Clear();
            m_Color.Clear();
        }
    }
}